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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/
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23,903 commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
986c24e0fe |
hid-for-linus-2026090401
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||
|
Linus Torvalds
|
36ec09e263 |
sound fixes for 7.3-rc2
A collection of small fixes since 7.3-rc1. Quite a few fixes are
for ALSA core for issues that have been detected by the things you
know well. Additionally a series of hardening for runtime PM, and
usual quirk updates, and some other misc driver fixes are included.
* Core:
- Fixes for PCM races
- UMP parser NULL dereference fix
- Fix error handling in rawmidi ioctl
* USB- and HD-audio:
- Implement missing runtime PM guards across multiple interfaces
- Fix for OOB access in US-122L MIDI driver
- Double-free fix for CAIAQ driver
- Quirks for HD-audio Realtek & Cirrus codecs, Conexant S3-resume,
USB Audient devices
* Others:
- Fix of logical mistakes in dummy driver mixer and selftest code
- Lock init fix in the legacy harmony driver
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Merge tag 'sound-7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"A collection of small fixes since 7.3-rc1.
Quite a few fixes are for ALSA core for issues that have been detected
by the things you know well. Additionally a series of hardening for
runtime PM, and usual quirk updates, and some other misc driver fixes
are included.
Core:
- Fixes for PCM races
- UMP parser NULL dereference fix
- Fix error handling in rawmidi ioctl
USB- and HD-audio:
- Implement missing runtime PM guards across multiple interfaces
- Fix for OOB access in US-122L MIDI driver
- Double-free fix for CAIAQ driver
- Quirks for HD-audio Realtek & Cirrus codecs, Conexant S3-resume,
USB Audient devices
Others:
- Fix of logical mistakes in dummy driver mixer and selftest code
- Lock init fix in the legacy harmony driver"
* tag 'sound-7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (23 commits)
ALSA: caiaq: Fix potential double-free at error path
selftests/alsa: Fix the step check for INTEGER controls
ALSA: hda/realtek: Fix cold-boot headset misdetection on Acer Aspire A515-57G
ALSA: rawmidi: Return the error from snd_rawmidi_input_params()
ALSA: ump: do not touch legacy_rmidi before it exists
ALSA: hda/cs420x: Add CS4208 fixup for MacBookAir 7,2
ALSA: dummy: Report a change when one capture switch channel moves
ALSA: usb-audio: Add mixer map quirk for Audient iD24
ALSA: hda: restore MFG widget enumeration after core split
ALSA: usb-audio: fix OOB write in snd_usbmidi_us122l_output()
ALSA: pcm: Serialize PCM mmap with buffer reallocation to fix page UAF
ALSA: harmony: initialize locks before requesting IRQ
ALSA: hda/realtek: Add quirk for VAIO VJS131
ALSA: pcm: Fix race between non-atomic ops and trigger-start
ALSA: hda/realtek: Add quirk for Acer Predator PHN16-72
ALSA: hda/realtek: Add quirk for Lenovo Yoga Slim 9 14ILL10
ALSA: hda/conexant:Fix abnormal Mic/Speaker functionality on SN6140 after S3 wake-up
ALSA: usb-audio: Guard FCP protocol transfers
ALSA: usb-audio: Add PM guards to RME Digiface controls
ALSA: usb-audio: Guard Scarlett2 protocol transfers
...
|
||
|
Linus Torvalds
|
bc35965f69 |
18 hotfixes. 13 are cc:stable. 15 are for MM.
All are singletons - please see the changelogs for details. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCapoUuQAKCRDdBJ7gKXxA jgscAP9iRyonROgpsNKC9H8EsAL7QhZNxjwc5PWs0bN6J50LOwD/Um6G7b1P8cxs j7kGpxbQYI0RWxxLUBLTQiPbDrvn6wY= =TJzY -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2026-09-03-17-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "18 hotfixes. 13 are cc:stable. 15 are for MM. All are singletons - please see the changelogs for details. There are no fixes (yet) for all the stuff we added in the most recent merge window. Hopefully a good sign" * tag 'mm-hotfixes-stable-2026-09-03-17-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: mm/secretmem: properly account locked pages mm/mremap: reset unfaulted VMA page offset for MREMAP_DONTUNMAP MAINTAINERS: add Kiryl as a THP reviewer MAINTAINERS: cover all of RAID MAINTAINERS: mailmap: update entries for Thorsten Blum MAINTAINERS: remove Lorenzo as THP co-maintainer Revert "once: don't use a work queue to reset sleepable static key" mm/hugetlb: fix missing migratable flag on same-node hugetlb migration mm/mempolicy: fix sleeping allocation in alloc_pages_bulk_weighted_interleave() mm/huge_memory: transfer the pmd dirty bit to the folio on zap MAINTAINERS: add Lance Yang as a hung task detector co-maintainer userfaultfd: reset err to be 0 when move_pages_ptes succeeded mm: fix incorrect vm_flags usage when checking allowable orders for tmpfs mm/hugetlb: keep max_huge_pages when dissolving surplus folios mm/migrate_device: avoid out-of-bounds writes for compound folios mm/hugetlb_cgroup: call page_counter_set_max() outside VM_BUG_ON() memcg: make the v1 soft limit knob inert mm/hugetlb_cma: fix null nodemask dereference in hugetlb_cma_alloc_frozen_folio |
||
Lorenzo Stoakes (ARM)
|
97d34aa65c |
mm/secretmem: properly account locked pages
secretmem accounts folios by treating memory as if it were mlock()'d and
thus limited by the RLIMIT_MEMLOCK limit.
However the folios are unevictable and remain so until the inode is
evicted, eliminating usual mlock() semantics - mapping folios then
unmapping them does not clear their unevictable state, since it depends on
AS_UNEVICTABLE, not PG_mlocked.
A user can therefore easily work around the RLIMIT_MEMLOCK limit - simply
map then unmap and VmLck no longer counts the secretmem range. Worse,
folios are not accounted in the process's RSS, meaning the OOM killer
won't know to kill the process.
Repeatedly mapping/unmapping (or forking) can then result in the
consumption of all available system memory with unevictable folios and
cause system instability.
A secretmem fd can be passed between processes and over fork so a
per-process limit simply does not make sense, so follow the precedent set
by io_uring, perf, skbuff, iommufd and xdp by tracking the number of
locked pages in user_struct->locked_vm.
Since the scope tracked is actually inode lifetime, the RLIMIT_MEMLOCK
applies per-user not per-process, so it doesn't make sense to bypass for
users with CAP_IPC_LOCK, therefore remove this bypass.
There is simply no reason to carry on marking the mapping as mlock()'d
since it's misleading and the lifecycle is now correctly handled, so
remove this too.
Note that secretmem does not support any form of truncation (including
hole punching) and the folios are unreclaimable, so the folios need only
be accounted on fault and unaccounted on inode destruction.
__secretmem_account_pages() is more or less a duplicate of the code that
io_uring etc. use, but since this is a bug fix that needs backporting,
defer any de-duplication efforts to a follow-up.
test_mlock_limit() asserts mlock_future_ok() on mmap(), however this has
been removed, so remove the test altogether for the fix. A new test will
be sent separately for upstream.
Link: https://lore.kernel.org/20260826-secretmem-accounting-v3-1-94cb04399510@kernel.org
Fixes:
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||
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Linus Torvalds
|
adf50c47a4 |
Including fixes from bluetooth.
Previous releases - regressions:
- page_pool: keep frag_offset aligned for odd-sized requests
- sched: fix u32 duplicate handle when node ID pool is exhausted
- udp: create exceptions before socket matching
- igmp: convert struct ip_sf_list to RCU
- ip6_gre: check tunnel info before xmit in ip6gre_tunnel_xmit
- rds: acquire the fastpath locks in rds_conn_shutdown()
- tipc:
- protect node reset trace dump with node lock
- fix NULL deref in tipc_named_node_up() on empty publication list
- bluetooth:
L2CAP: fix out-of-bounds write in l2cap_ecred_connect
hci_core: fix race condition during device registration
- eth: mlx5e: prevent stale XSK buffer release on refill retries
- eth: bridge: don't truncate the port group walk on teardown
Previous releases - always broken:
- gro: fix nesting of TCP GSO SKBs in skb_gro_receive_list()
- sched: fix skb sizing and action leak on reoffload delete
- tcp: fix use-after-free in do_tcp_getsockopt()
- af_packet: don't cast tpacket_hdr.tp_len to int in tpacket_parse_header().
- sctp: fix soft lockup from unpadded ASCONF-ACK parameter iteration
- iptunnel: fix stale transport header during tunnel decapsulation
- eth: vxlan: fix use-after-free in vxlan_mdb_remote_src_del()
- eth: bonding: fix uninitialized transport header access in alb_determine_nd()
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from bluetooth.
Previous releases - regressions:
- page_pool: keep frag_offset aligned for odd-sized requests
- sched: fix u32 duplicate handle when node ID pool is exhausted
- udp: create exceptions before socket matching
- igmp: convert struct ip_sf_list to RCU
- ip6_gre: check tunnel info before xmit in ip6gre_tunnel_xmit
- rds: acquire the fastpath locks in rds_conn_shutdown()
- tipc:
- protect node reset trace dump with node lock
- fix NULL deref in tipc_named_node_up() on empty publication
list
- bluetooth:
- L2CAP: fix out-of-bounds write in l2cap_ecred_connect
- hci_core: fix race condition during device registration
- eth:
- mlx5e: prevent stale XSK buffer release on refill retries
- bridge: don't truncate the port group walk on teardown
Previous releases - always broken:
- gro: fix nesting of TCP GSO SKBs in skb_gro_receive_list()
- sched: fix skb sizing and action leak on reoffload delete
- tcp: fix use-after-free in do_tcp_getsockopt()
- af_packet: don't cast tpacket_hdr.tp_len to int in
tpacket_parse_header()
- sctp: fix soft lockup from unpadded ASCONF-ACK parameter iteration
- iptunnel: fix stale transport header during tunnel decapsulation
- eth:
- vxlan: fix use-after-free in vxlan_mdb_remote_src_del()
- bonding: fix uninitialized transport header access in
alb_determine_nd()"
* tag 'net-7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (83 commits)
net: gro: Fix nesting of TCP GSO SKBs in skb_gro_receive_list()
net: stmmac: reconfigure RX packet parser table in stmmac_hw_setup() after reset
net: airoha: enable RX_DONE interrupt for RX queue 31
net/rds: don't let rds_conn_shutdown() consume a concurrent drop
net/rds: acquire the fastpath locks in rds_conn_shutdown()
net/rds: acquire RDS_IN_XMIT in rds_tcp_reset_callbacks()
net/rds: tcp: don't force RDS_CONN_RESETTING over a concurrent shutdown
net/rds: clear cp_flags bits individually in rds_conn_path_reset()
net/rds: use clear_bit_unlock() in release_refill()
net/rds: use wq_has_sleeper() in release_in_xmit()
net: usb: qmi_wwan: add Compal EXM-G1x support
net: macb: exclude software FCS from TX byte statistics
net: Remove conflicting altnames for dying netns in __dev_change_net_namespace().
net: bridge: mcast: don't truncate the port group walk on teardown
bonding: do not clear curr_active_slave prematurely when releasing all slaves
net: qrtr: Send HELLO message on endpoint register
octeontx2-af: Fix limiting SRIOV VF count logic
bonding: alb: fix uninitialized transport header access in alb_determine_nd()
s390/ctcm: Prevent XID null dereference
net: psp: do not inherit the Rx association on clone
...
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HyeongJun An
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8efd5f623c |
selftests/alsa: Fix the step check for INTEGER controls
The modulo sits inside the subtraction, so the check evaluates
int_val - (min % step) rather than (int_val - min) % step. The
INTEGER64 branch below it is parenthesised correctly.
The written form passes only when the value equals min % step, and such
a value is always on a step boundary, so it never misses a real
violation. It only reports valid values as invalid.
snd-aloop declares step 1 on four controls, so every non-zero value on
them is reported. Before:
# PCM Rate Shift 100000.0 value 100000 invalid for step 1 minimum 80000
# Totals: pass:660 fail:101 xfail:0 xpass:0 skip:296 error:0
After, same card, nothing else changed:
# Totals: pass:740 fail:21 xfail:0 xpass:0 skip:296 error:0
Eighteen files under sound/ declare a non-zero step.
Fixes:
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Benjamin Tissoires
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ce58f5a184 |
selftests/hid: prepare test_rdesc_fixup_get_data_overflow for the new verifier
The new verifier in the bpf-next branch is now capable of detecting the overflow that was triggered by test_rdesc_fixup_get_data_overflow. This is better in terms of UI, but now the test is failing and should be marked as expected to fail. Add a new parameter to load_programs() when we expect the test to fail, and dynamically validate the test by checkcing if it loads (it should fail to load with new verifier), but if it still loads, HID-BPF should detect the overflow itself and return an error in hid_bpf_get_data(). Signed-off-by: Benjamin Tissoires <bentiss@kernel.org> |
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Benjamin Tissoires
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1fb68c2e76 |
selftests/hid: Add a test to ensure we can write fields in hid_device
hid_device->{name,uniq,phys} are all writeable fields, we need to have
tests for them in case the verifier becomes too much strict.
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
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Ido Schimmel
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c923c14942 |
selftests: net: Add exception cache tests
Add a test for the IPv4 and IPv6 exception caches, covering the
exceptions that are created in response to ICMP errors quoting a UDP
packet.
The topology consists of a host (h1) that reaches a remote host (h2)
via a router (r1), with a second router (r2) attached to the segment
shared by h1 and r1. UDP packets are injected using a packet socket, so
that an ICMP error quoting them is only matched to a socket when one was
opened separately with the same source port. PMTU errors are provoked by
lowering the MTU of the far end of the path and redirects by pointing
r1's route towards h2 back over the segment it received the packet from.
The following is tested for both address families and for both PMTU and
redirect exceptions:
* An error that is not matched to a socket creates an exception that
carries the new MTU or gateway.
* An error that is matched to a socket creates the same exception.
The PMTU tests further verify that a lower PMTU replaces the one stored
in the exception whereas a higher one does not, and that a socket which
disabled PMTU discovery using IP{,V6}_PMTUDISC_OMIT gets the same
exception as the other cases.
Without "ipv4: udp: Create exceptions before socket matching" and "ipv6:
udp: Create exceptions before socket matching", the tests that do not
open a socket fail:
# ./exception_cache.sh
TEST: IPv4: PMTU: exception without a matching socket [FAIL]
No socket: exception does not carry an MTU of 1400
TEST: IPv6: PMTU: exception without a matching socket [FAIL]
No socket: exception does not carry an MTU of 1400
TEST: IPv4: PMTU: exception with a matching socket [ OK ]
TEST: IPv6: PMTU: exception with a matching socket [ OK ]
TEST: IPv4: PMTU: exception with a socket ignoring it [FAIL]
PMTU discovery disabled: exception does not carry an MTU of 1400
TEST: IPv6: PMTU: exception with a socket ignoring it [FAIL]
PMTU discovery disabled: exception does not carry an MTU of 1400
TEST: IPv4: Redirect: exception without a matching socket [FAIL]
No socket: exception does not carry the new gateway
TEST: IPv6: Redirect: exception without a matching socket [FAIL]
No socket: exception does not carry the new gateway
TEST: IPv4: Redirect: exception with a matching socket [ OK ]
TEST: IPv6: Redirect: exception with a matching socket [ OK ]
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20260828192344.2596928-5-idosch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Jamal Hadi Salim
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7b120a7719 |
selftests: tc-testing: add u32 node ID pool exhaustion test
Add a tdc test case that fills the u32 node ID space with 4095 auto-generated handles, then attempts to add a 4096th. On the fixed kernel the 4096th filter is rejected with ENOSPC (exit 2). On the unfixed kernel it silently succeeds with a duplicate handle. The setup pipes the 4095 add commands directly into `tc -b -` inside a single bash -c (matching the existing test id 1234 pattern), avoiding any temp file. Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com> Link: https://patch.msgid.link/20260825081052.133898-2-jhs@mojatatu.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
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Linus Torvalds
|
c3b510de42 |
cgroup: Fixes for v7.3-rc1
- After cgroup.kill was written to a cgroup, every child cloned into it with CLONE_INTO_CGROUP was spuriously killed because the fork path snapshotted the kill counter before resolving the target cgroup. - Releasing an isolated cpuset partition dropped the isolation of CPUs isolated on the kernel command line. - Selftest and documentation fixes. -----BEGIN PGP SIGNATURE----- iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCapXm8w4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGbhtAQCfUc4oanF94uiAGzH2UAA2HIorLT4TDjuDj/oM qrqeLQEA1p2XQz56SYXhK8fG+fy+Ep3xxqS2gStmtYL20ie4lQc= =i4QU -----END PGP SIGNATURE----- Merge tag 'cgroup-for-7.3-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cgroup fixes from Tejun Heo: - After cgroup.kill was written to a cgroup, every child cloned into it with CLONE_INTO_CGROUP was spuriously killed because the fork path snapshotted the kill counter before resolving the target cgroup - Releasing an isolated cpuset partition dropped the isolation of CPUs isolated on the kernel command line - Selftest and documentation fixes * tag 'cgroup-for-7.3-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: selftests/cgroup: test clone3() into a previously killed cgroup cgroup: fix spurious SIGKILL of CLONE_INTO_CGROUP children selftests/cgroup: Add test for preserving boot-isolated CPUs cgroup/cpuset: Preserve boot-isolated CPUs on partition release selftests/cgroup: Drop invalid boot isolation comparison docs: cgroup-v2: fix misc.events key format description selftests/cgroup: Fix cg_run_in_subcgroups ignoring arg parameter selftests/cgroup: set the test plan after the setup checks |
||
Etienne Perot
|
3f4b7d1a49 |
selftests/cgroup: test clone3() into a previously killed cgroup
Once cgroup.kill had been written to a cgroup, a stale kill_seq snapshot (taken in cgroup_css_set_fork() before the target cgroup was resolved) caused every child subsequently cloned into that cgroup with clone3(CLONE_INTO_CGROUP) to be SIGKILLed on the spot. Add a regression test: create a cgroup, kill it while it is empty, then clone a child into it and check that the child runs and exits cleanly. On a kernel without the fix, the test fails: not ok 4 test_cgkill_clone_into_killed The test is skipped on kernels without clone3() or without CLONE_INTO_CGROUP. Cc: Shakeel Butt <shakeel.butt@linux.dev> Assisted-by: LLM Signed-off-by: Etienne Perot <eperot@google.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
||
Baul Lee
|
4aa61c88b4 |
vxlan: mdb: Fix use-after-free in vxlan_mdb_remote_src_del()
vxlan_mdb_is_valid_source(), which validates MDBE_ATTR_SOURCE and every
MDBE_ATTR_SRC_LIST member, accepts the all-zeros address.
A source list is only accepted on a (*, G) entry, whose source is the
all-zeros address, and for each member of the list an (S, G) entry is
derived from it by substituting the source. Entries are keyed by a plain
memcmp() of struct vxlan_mdb_entry_key, so if MDBE_ATTR_SOURCE is present
and holds the all-zeros address and the source list holds it as well, the
derived (S, G) key is byte-identical to the (*, G) key and resolves to the
same entry. Omitting MDBE_ATTR_SOURCE is not equivalent, as the key is
then left with a zero address family.
vxlan_mdb_remote_src_del() removes the forwarding entry of a source before
freeing the source entry:
vxlan_mdb_remote_src_fwd_del(vxlan, group, remote, &ent->addr);
vxlan_mdb_remote_src_entry_del(ent);
With the keys aliased, the first call deletes the remote of the entry that
owns 'ent' instead of a separate (S, G) entry, and frees 'ent'. The second
call then runs on the freed entry, and its hlist_del() reads ->pprev and
->next out of it and writes through them.
Adding the (*, G) entry with NLM_F_REPLACE and no source list marks the
all-zeros source for deletion and reaches this from the sweep at the end
of vxlan_mdb_remote_srcs_replace().
BUG: KASAN: slab-use-after-free in __vxlan_mdb_add+0x1cd/0xd70
Read of size 8 at addr ffff888102852500 by task poc/84
__vxlan_mdb_add+0x1cd/0xd70
vxlan_mdb_add+0xc0/0x140
rtnl_mdb_add+0x157/0x2a0
rtnetlink_rcv_msg+0x207/0x5a0
Allocated by task 84:
__kmalloc_cache_noprof+0x153/0x360
vxlan_mdb_remote_srcs_add+0x2eb/0x440
__vxlan_mdb_add+0x803/0xd70
Freed by task 84:
kfree+0x14c/0x3b0
vxlan_mdb_remote_del+0x129/0x1a0
__vxlan_mdb_del+0x4f/0xe0
vxlan_mdb_remote_src_fwd_del.isra.0+0x162/0x1b0
__vxlan_mdb_add+0x1c5/0xd70
The MDB operations are netns-scoped, so an unprivileged user can perform
them in a new user and network namespace.
Reject the all-zeros address in vxlan_mdb_is_valid_source(), which covers
both call sites. A (*, G) entry is expressed by omitting the source, so
nothing legitimate is refused.
Discovered by XBOW, triaged by Baul Lee <baul.lee@xbow.com>
Fixes:
|
||
|
Linus Torvalds
|
9d607ae0f7 |
arm64 fixes for -rc1
- Fix address handling of final memory region in ptdump - Fix emulation of decrementing load/store multiple from 32-bit task - Fix SCTLR context-switching for store-only MTE mode - Fix numerous issues in MTE selftests -----BEGIN PGP SIGNATURE----- iQFEBAABCgAuFiEEPxTL6PPUbjXGY88ct6xw3ITBYzQFAmqRTQQQHHdpbGxAa2Vy bmVsLm9yZwAKCRC3rHDchMFjNAXpCADI7oz3aSuRJ3aRmMz5Vv4EvPjTrNcc5gi0 H91Qkl+UMN0DJGqt+1ZZBhm6Kv3rvrtj6UaEk1SycEV+jg2IWbhd1C1UTZCd5Lf9 0jiJdsoOgeTKahhFX9pU+QJCNpFqI+DORc+TYWB2uwN39OWPrHOXgJtdePNNYb1h UyCIRK+PEbXnA6LDxWokuzO70EddRIcpW2eT7WOWpgA2FNwN5DzsXdviosylZAtp xhjvpTJv/LNbMeBXalH91IKDbRCAWEvEY8j2BSOkcFxGFOA3aXrVh5sWKdFeqKis VoWZQTDtpHj1Mw0eCMn77H0r6uxXn/skCcd8pwfIFA7EnGguAcBB =/QWC -----END PGP SIGNATURE----- Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fixes from Will Deacon: "A mixture of ptdump, compat and MTE fixes that came in during the merge window: - Fix address handling of final memory region in ptdump - Fix emulation of decrementing load/store multiple from 32-bit task - Fix SCTLR context-switching for store-only MTE mode - Fix numerous issues in MTE selftests" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: selftests/arm64: Add MTE test config fragment selftests/arm64: Fix MTE prctl TAP plan selftests/arm64: Treat KSM merge_across_nodes as optional selftests/arm64: Print missing MTE TAP headers arm64: compat: Fix decrementing LDM/STM alignment emulation arm64: process: Fix context switching MTE store-only tag check KVM: arm64: ptdump: Flush the last region arm64: ptdump: Make note_page_flush() range aware |
||
|
Linus Torvalds
|
1b78070aae |
Including fixes from Bluetooth, IPSec and Netfilter.
Current release - fix to a fix:
- netfilter: ipset: remove need to allocate memory on delete operations
Current release - regressions:
- macb: drop CONFIG_OF #if block, fix build
Previous releases - always broken:
- stream of fixes for SCTP continues
- inet: frags: strip GSO state from fragments before reassembly
- virtio-net: ensure that TCP packets don't overflow gso_segs
- tcp-ao: fix use-after-free of current_key on reconnect to another peer
- page_pool: remove zone/policy GFP flags when allocating XArray entries
- Bluetooth: L2CAP: reject accept queue add unless BT_LISTEN
- tls: device: fix out-of-bounds write in tls_append_frag()
- eth: bnxt:
- ring the doorbell when SW USO exits early, avoid packets stuck in Tx
- gate TPH enablement behind BNXT_SUPPORTS_QUEUE_API check, avoid users
of older NICs seeing non-actionable warning messages
- eth: qede: fix NULL pointer dereference in TPA fragment processing
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from Bluetooth, IPSec and Netfilter.
Current release - fix to a fix:
- netfilter: ipset: remove need to allocate memory on delete operations
Current release - regressions:
- macb: drop CONFIG_OF #if block, fix build
Previous releases - always broken:
- stream of fixes for SCTP continues
- inet: frags: strip GSO state from fragments before reassembly
- virtio-net: ensure that TCP packets don't overflow gso_segs
- tcp-ao: fix use-after-free of current_key on reconnect to another
peer
- page_pool: remove zone/policy GFP flags when allocating XArray
entries
- Bluetooth: L2CAP: reject accept queue add unless BT_LISTEN
- tls: device: fix out-of-bounds write in tls_append_frag()
- eth: bnxt:
- ring the doorbell when SW USO exits early, avoid packets stuck
in Tx
- gate TPH enablement behind BNXT_SUPPORTS_QUEUE_API check, avoid
users of older NICs seeing non-actionable warning messages
- eth: qede: fix NULL pointer dereference in TPA fragment processing"
* tag 'net-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (216 commits)
inet: frags: strip GSO state from fragments before reassembly
net/sched: sch_htb: limit htb_classify inner-class filter hops
selftests/net: packetdrill: add tcp_urg_ptr_retransmit
tcp: fix corruption of urgent data on multi-segment retransmit
usb: atm: usbatm: fix invalid ci_range initialization
net: fec: only stop PTP if it was initialized
slip: remove slip_hangup() to fix use-after-free in slip_receive_buf()
net: bridge: mcast: fix use-after-free of a master VLAN's multicast context
net/sched: bound qdisc_pkt_len to prevent qdisc soft lockup
net: dsa: mxl862xx: enable assisted learning on CPU port
net: stmmac: restore NET_IP_ALIGN in the RX DMA offset
net: stmmac: drop gso_enabled_types and rely on netdev features
net: stmmac: selftests: Don't test flow control for small rx fifos
net: stmmac: selftests: Account for the UC filter list for filtering tests
net: stmmac: dwxgmac: Account for the primary MAC address for UC filtering
net: stmmac: dwmac4: Account for the primary MAC address for UC filtering
net: stmmac: dwmac1000: Account for the primary MAC address for UC filtering
net: stmmac: selftests: Check multiple MMC counters
selftests: net: Fix slow configurations in big_tcp_tunnels.sh
selftests: net: Lower threshold with csum offload off in big_tcp_tunnels.sh
...
|
||
Jiayuan Chen
|
6a7e91f890 |
selftests/net: packetdrill: add tcp_urg_ptr_retransmit
Drive a connection into urgent mode and force a multi-segment retransmit, checking that each retransmitted segment keeps its own urg_ptr. The test asserts the fixed behaviour: the hole is retransmitted as two independent skbs, each with its own urg_ptr (5001 and 4001) and no PSH. An unpatched kernel instead sends one super-skb whose GSO split copies urg_ptr onto the second segment and also sets PSH there, so on an unpatched kernel the mismatch shows up on the PSH bit (actual P.U ... urg 5001) before the urg_ptr: tcp_urg_ptr_retransmit.pkt:63: live packet field tcp_psh: expected: 0 (0x0) vs actual: 1 (0x1) script packet: .U 1001:2001(1000) ack 1 actual packet: P.U 1001:2001(1000) ack 1 win 1050 After the fix the retransmit carries a per-segment urg_ptr and the test passes. Signed-off-by: Jiayuan Chen <jiayuan.chen@linux.dev> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20260826141145.67823-2-jiayuan.chen@linux.dev Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Linus Torvalds
|
18fbf5151d |
mm.git review status for linus..mm-stable
Everything: Total patches: 171 Reviews/patch: 1.83 Reviewed rate: 82% Excluding selftests: Total patches: 149 Reviews/patch: 1.77 Reviewed rate: 80% Excluding selftests and maple_tree: Total patches: 129 Reviews/patch: 1.99 Reviewed rate: 89% Summary of patch series in this merge: - "mm/rmap: index MAP_PRIVATE file-backed folios by anonymous pgoff" (Lorenzo Stoakes): Index MAP_PRIVATE file-backed folios by their anonymous page offset to resolve confusion around reverse mapping for zeroed and CoW'd file-backed memory. Use this new VMA anonymous page offset tracking to eliminate index conflicts and lay the foundation for scalable CoW performance improvements. - "promote mapped executable folios after first usage for MGLRU" (Baolin Wang): Make MGLRU's protection of mapped executable file folios more reliable. Follow the classical LRU's logic, promoting mapped executable file folios after their first usage to give executable code a better chance to stay in memory and improve workload performance. - "mm: vmscan: fix node reclaim ignoring swappiness parameter" (Ridong Chen): Fix per-node proactive reclaim interface's ignoring the swappiness parameter when CONFIG_MEMCG is disabled by consolidating sc_swappiness() into a single function that checks proactive_swappiness regardless of kernel configuration. - "mm/vmscan: reduce lru_lock contention via vmstat-derived scan-balance cost" (Usama Arif): Reduce lru_lock contention in the reclaim path by deriving scan-balance costs from vmstat counters rather than lock-acquired producer updates. Read and decay these cost signals on the reclaim side under a dedicated per-lruvec lock, reducing total LRU lock wait time by over 60% without impacting scan throughput. - "zram: fix zram issues reported by sashiko" (Sergey Senozhatsky): Fix two low-risk zram bugs which Sashiko spotted in drive-by review. - "Honor XA_FLAGS_ACCOUNT in xas_split_alloc() and charge to folio's memcg" (Zi Yan): Fix xas_split_alloc() by enabling target folio memcg charging during splits and adding the missing __GFP_ACCOUNT flag for proper XArray node memory accounting. - "selftests/mm: use pattern matching in .gitignore" (Pratyush Mallick): Replace hardcoded binary names in selftests/mm/.gitignore with a generic pattern-matching rule to automatically ignore generated test files and avoid manual updates when adding new tests. - "mm/page_ext: remove pgdat_page_ext_init()" (Sang-Heon Jeon): Make the incompatibility between FLATMEM and NUMA explicit in mm/Kconfig and remove the unused pgdat_page_ext_init() function. - "zram: fix zstd error paths and add parameter validation" (Haoqin Huang): Clean up zram compression backends by removing redundant error cleanup, adding parameter and dictionary validation, auto-prefixing algorithm error logs, and resetting parameters prior to reinitialization. - "zram: fix stale scan bounds after reinitialization" (Longlong Xia): Prevent out-of-bounds slot accesses during concurrent zram resets by moving table scan bound calculations under dev_lock in writeback_store() and read_block_state(). - "add anon mTHP collapse test cases" (Baolin Wang): Extend selftests helper functions to support arbitrary page orders and add new test cases and options for mTHP collapse in khugepaged. - "selftests/mm: Handle unsupported and transient test conditions" (Muhammad Usama Anjum): Update MM selftests to report a SKIP status instead of a failure when required kernel or filesystem features are unsupported, while adding retry logic for transient page migration errors. - "mm/zswap: Fixes and improves the zswap shrink" (Hao Jia): Fix the missing zswap global shrinker when CONFIG_MEMCG is disabled and extend shrink_memcg() to support batch writeback for improved writeback efficiency. - "alloc_tag: introduce IOCTL-based filtering for MAP" (Suren Baghdasaryan): Introduce an IOCTL-based binary interface for memory allocation profiling that enables kernel-side filtering before per-CPU counter aggregation. This eliminates the text-parsing overhead of /proc/allocinfo and provides up to a 20x speedup by transferring only filtered allocation data to userspace. - "better block swap batching and a different take on swap_ops v5" (Christoph Hellwig): Refactor block swap I/O to use swap_iocb for batching instead of single-bio requests and rebase the swap_ops interface, achieving faster swap throughput during kernel builds. - "mm: kmemleak: reduce transient false positives by confirming leaks" (Catalin Marinas): Reduce false-positive kmemleak reports by combining two kmemleak enhancements that add a second confirmation scan and a configurable minimum unreferenced scan count module parameter. - "mm: kmemleak: default min_unref_scans to 2 for verbose kernels" (Breno Leitao): Auto-scanning kernels can generate false-positive memory leak reports on single scans, so this patch defaults min_unref_scans to 2 when CONFIG_DEBUG_KMEMLEAK_VERBOSE is enabled to require a second confirming scan. - "swap_ops updates" (Christoph Hellwig): Batching I/O for synchronous swap devices causes performance regressions and filesystem-based swap suffers from double-indirection overhead. This series resolves both issues by reintroducing per-folio writes for synchronous swap and allowing filesystems to directly export their own swap_ops. - "mm/khugepaged: several cleanups" (Nico Pache): khugepaged accumulated redundant state-checking patterns and outdated comments following mTHP integration. Introduce dedicated helpers for PTE validation and event counting while refreshing the internal documentation. - "maple_tree: lock checking and clean ups" (Liam Howlett): Syzbot reports incorrectly blame memory management exit paths for locking bugs, maple tree erase operations risk allocation failures without gfp flags and internal documentation lacks clarity. Improve lock error detection, update docs, fix race and allocation edge cases and optimize erase allocations using a fallback to GFP_KERNEL | GFP_NOFAIL. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCao9nJQAKCRDdBJ7gKXxA jk/9AQDlfevYJuSJmzAI8bt8ISG+/TfXMtIZC/MdbHqtQVYWPQD8Cvm3DUZsdGB/ Gloq/HBFuMPgE8p2pwUIthdgnTPNvAc= =c+Nb -----END PGP SIGNATURE----- Merge tag 'mm-stable-2026-08-26-15-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull more MM updates from Andrew Morton: - "mm/rmap: index MAP_PRIVATE file-backed folios by anonymous pgoff" (Lorenzo Stoakes) Index MAP_PRIVATE file-backed folios by their anonymous page offset to resolve confusion around reverse mapping for zeroed and CoW'd file-backed memory. Use this new VMA anonymous page offset tracking to eliminate index conflicts and lay the foundation for scalable CoW performance improvements. - "promote mapped executable folios after first usage for MGLRU" (Baolin Wang) Make MGLRU's protection of mapped executable file folios more reliable. Follow the classical LRU's logic, promoting mapped executable file folios after their first usage to give executable code a better chance to stay in memory and improve workload performance. - "mm: vmscan: fix node reclaim ignoring swappiness parameter" (Ridong Chen) Fix per-node proactive reclaim interface's ignoring the swappiness parameter when CONFIG_MEMCG is disabled by consolidating sc_swappiness() into a single function that checks proactive_swappiness regardless of kernel configuration. - "mm/vmscan: reduce lru_lock contention via vmstat-derived scan-balance cost" (Usama Arif) Reduce lru_lock contention in the reclaim path by deriving scan-balance costs from vmstat counters rather than lock-acquired producer updates. Read and decay these cost signals on the reclaim side under a dedicated per-lruvec lock, reducing total LRU lock wait time by over 60% without impacting scan throughput. - "zram: fix zram issues reported by sashiko" (Sergey Senozhatsky) Fix two low-risk zram bugs which Sashiko spotted in drive-by review. - "Honor XA_FLAGS_ACCOUNT in xas_split_alloc() and charge to folio's memcg" (Zi Yan) Fix xas_split_alloc() by enabling target folio memcg charging during splits and adding the missing __GFP_ACCOUNT flag for proper XArray node memory accounting. - "selftests/mm: use pattern matching in .gitignore" (Pratyush Mallick) Replace hardcoded binary names in selftests/mm/.gitignore with a generic pattern-matching rule to automatically ignore generated test files and avoid manual updates when adding new tests. - "mm/page_ext: remove pgdat_page_ext_init()" (Sang-Heon Jeon) Make the incompatibility between FLATMEM and NUMA explicit in mm/Kconfig and remove the unused pgdat_page_ext_init() function. - "zram: fix zstd error paths and add parameter validation" (Haoqin Huang) Clean up zram compression backends by removing redundant error cleanup, adding parameter and dictionary validation, auto-prefixing algorithm error logs, and resetting parameters prior to reinitialization. - "zram: fix stale scan bounds after reinitialization" (Longlong Xia) Prevent out-of-bounds slot accesses during concurrent zram resets by moving table scan bound calculations under dev_lock in writeback_store() and read_block_state(). - "add anon mTHP collapse test cases" (Baolin Wang) Extend selftests helper functions to support arbitrary page orders and add new test cases and options for mTHP collapse in khugepaged. - "selftests/mm: Handle unsupported and transient test conditions" (Muhammad Usama Anjum) Update MM selftests to report a SKIP status instead of a failure when required kernel or filesystem features are unsupported, while adding retry logic for transient page migration errors. - "mm/zswap: Fixes and improves the zswap shrink" (Hao Jia) Fix the missing zswap global shrinker when CONFIG_MEMCG is disabled and extend shrink_memcg() to support batch writeback for improved writeback efficiency. - "alloc_tag: introduce IOCTL-based filtering for MAP" (Suren Baghdasaryan) Introduce an IOCTL-based binary interface for memory allocation profiling that enables kernel-side filtering before per-CPU counter aggregation. This eliminates the text-parsing overhead of /proc/allocinfo and provides up to a 20x speedup by transferring only filtered allocation data to userspace. - "better block swap batching and a different take on swap_ops v5" (Christoph Hellwig) Refactor block swap I/O to use swap_iocb for batching instead of single-bio requests and rebase the swap_ops interface, achieving faster swap throughput during kernel builds. - "mm: kmemleak: reduce transient false positives by confirming leaks" (Catalin Marinas) Reduce false-positive kmemleak reports by combining two kmemleak enhancements that add a second confirmation scan and a configurable minimum unreferenced scan count module parameter. - "mm: kmemleak: default min_unref_scans to 2 for verbose kernels" (Breno Leitao) Auto-scanning kernels can generate false-positive memory leak reports on single scans, so this patch defaults min_unref_scans to 2 when CONFIG_DEBUG_KMEMLEAK_VERBOSE is enabled to require a second confirming scan. - "swap_ops updates" (Christoph Hellwig) Batching I/O for synchronous swap devices causes performance regressions and filesystem-based swap suffers from double-indirection overhead. This series resolves both issues by reintroducing per-folio writes for synchronous swap and allowing filesystems to directly export their own swap_ops. - "mm/khugepaged: several cleanups" (Nico Pache) khugepaged accumulated redundant state-checking patterns and outdated comments following mTHP integration. Introduce dedicated helpers for PTE validation and event counting while refreshing the internal documentation. - "maple_tree: lock checking and clean ups" (Liam Howlett) Syzbot reports incorrectly blame memory management exit paths for locking bugs, maple tree erase operations risk allocation failures without gfp flags and internal documentation lacks clarity. Improve lock error detection, update docs, fix race and allocation edge cases and optimize erase allocations using a fallback to GFP_KERNEL | GFP_NOFAIL. * tag 'mm-stable-2026-08-26-15-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (172 commits) selftests/proc: make proc-maps-race work with READ_IMPLIES_EXEC memcg: move LRU size accounting on reparenting instead of copying it mm/vmscan: fix comment logic in balance_pgdat maple_tree: add helper mas_make_walkable() maple_tree: avoid extra gap calculation maple_tree: fix argument name in header maple_tree: change two GFP flags in tests maple_tree: document erase and allocations better maple_tree: avoid mas_erase() and mtree_erase() failures maple_tree: document that erase may use GFP_KERNEL for allocations maple_tree: catch race in mas_alloc_cyclic() maple_tree: add bulk parent set helper maple_tree: micro optimisation of mas_wr_store_type() maple_tree: optimise mas_wr_node_store() when not in rcu mode maple_tree: use prefetched value in mas_wr_store_type() maple_tree: clarify comments on mas_nomem() maple_tree: drop MAPLE_ALLOC_SLOTS maple_tree: drop dead code from mas_extend_spanning_null() maple_tree: documentation fix maple_tree: add write lock checking with lockdep sequence numbers ... |
||
Alice Mikityanska
|
1d62b83fb7 |
selftests: net: Fix slow configurations in big_tcp_tunnels.sh
The combination of checksum offload disabled (that causes software GSO)
and a debug kernel is inherently slow. Depending on the CPU power and
load, RTT may increase, limiting sk_pacing_rate, so tcp_tso_autosize
caps SKBs at around 40 segments, and zero BIG TCP packets are produced.
Increase sysctl net.ipv4.tcp_min_tso_segs and set a bigger initial value
of CWND in these configurations to force BIG TCP.
Fixes:
|
||
|
Alice Mikityanska
|
f7d0400bd3 |
selftests: net: Lower threshold with csum offload off in big_tcp_tunnels.sh
With checksum offload disabled, much fewer BIG TCP packets are generated
due to overall loss of throughput. Use a separate threshold in these
tests, which is 1/10 of the threshold set for the rest of tests.
Fixes:
|
||
|
Alice Mikityanska
|
bb42c16f48 |
selftests: net: Lower threshold on debug kernels for big_tcp_tunnels.sh
Debug kernels on upstream CI runners run slower and generate fewer BIG
TCP packets, making the test flaky on upstream CI runners. Lower the
default threshold for those kernels.
Fixes:
|
||
|
Alice Mikityanska
|
dc170da334 |
selftests: net: Wait for netserver to launch
Use wait_local_port_listen after starting netserver in
big_tcp_tunnels.sh to ensure it's listening when the test starts.
Fixes:
|
||
Muhammad Usama Anjum
|
2bd5337392 |
selftests/arm64: Add MTE test config fragment
The arm64 selftest collection has no Kconfig fragment, so kernels built with the selftest requirements are not guaranteed to provide the support used by these tests. Add a fragment covering all tests in arm64. Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: Muhammad Usama Anjum <usama.anjum@arm.com> Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Signed-off-by: Will Deacon <will@kernel.org> |
||
|
Muhammad Usama Anjum
|
bb52892f92 |
selftests/arm64: Fix MTE prctl TAP plan
The MTE prctl test emits one result from check_basic_read() followed by
one result for each of the seven entries in mte_modes[]. However, the TAP
plan only accounts for the array entries, producing:
# Planned tests != run tests (7 != 8)
Include the basic read check in the plan so that all eight emitted results
are declared.
Reviewed-by: Mark Brown <broonie@kernel.org>
Fixes:
|
||
|
Muhammad Usama Anjum
|
1a0dba077f |
selftests/arm64: Treat KSM merge_across_nodes as optional
The MTE KSM test requires write access to KSM sysfs but does not check
that it is running as root. It also unconditionally saves, enables and
restores the merge_across_nodes attribute. The kernel only creates this
attribute when CONFIG_NUMA=y, so a non-NUMA kernel prints the following
message three times even though every KSM subtest passes:
# ERR: missing /sys/kernel/mm/ksm/merge_across_nodes
Skip the test when it is not running as root. Check that the optional
attribute is readable and writable, treating ENOENT as its expected
absence on non-NUMA kernels and skipping the test for other access
failures. Only save, enable and restore the attribute when it is
available.
Check MTE availability before the privilege and sysfs checks so systems
without MTE retain the existing feature-unavailable skip result.
This preserves the existing behavior on NUMA kernels without requiring
NUMA or reducing KSM coverage on single-node systems.
Fixes:
|
||
|
Muhammad Usama Anjum
|
8d2237e9d6 |
selftests/arm64: Print missing MTE TAP headers
Most MTE tests set a TAP plan and emit results without first printing
the TAP version header. Direct execution therefore starts with a plan
such as "1..20" instead of "TAP version 13".
The problem is particularly visible in the GCR_EL1 context-switch test.
It prints its plan before forking 1,024 child processes. When stdout is
fully buffered, the plan remains in the stdio buffer. Each child inherits
the pending "1..1" line and flushes its copy from exit(), producing
repeated plan lines.
ksft_print_header() prints the TAP header and enables line buffering.
Call it in every MTE test that is missing it. In the GCR_EL1 test, call
it before the plan so the plan is flushed before the children are
forked. In the remaining tests, call it before setup and prerequisite
checks so early failures and whole-test skips also retain the header.
Fixes:
|
||
Rastislav Szabo
|
687e5b48c4 |
selftests: net: tcp_ao: test VRF-scoped key deletion
Verify that TCP_AO_DEL_KEY can remove a TCP-AO key scoped to a VRF. Assisted-by: Codex:GPT-5 Signed-off-by: Rastislav Szabo <rastislav.szabo@isovalent.com> Reviewed-by: David Ahern <dsahern@kernel.org> Acked-by: Dmitry Safonov <dima@arista.com> Link: https://patch.msgid.link/20260822201119.272269-2-rastislav.szabo@isovalent.com Signed-off-by: Paolo Abeni <pabeni@redhat.com> |
||
|
Linus Torvalds
|
7bb6284aa7 |
Arm:
* Add support for 'slot' based PMU events, paired with new UAPI that
compels the user to select a specific PMU implementation
* Lazy save/restore of vCPU state for pKVM, along with various fixes
and cleanups to the management of vCPU state between the untrusted
host and pKVM hypervisor
* Disable traps of EL1 registers for nested hypervisors when FEAT_NV2p1
is present, guaranteeing that EL2-specific register bits are stateful
in the EL1 counterpart
* Leverage FEAT_NV3 to avoid unnecessary ERET/TLBI traps when the scope
of those instructions remains 'in host' (i.e. L1 kernel/userspace)
* Pile of fixes for the management of the VNCR pseudo-TLB, such as
under-invalidations and races with concurrent TLBIs on other vCPUs
* Consolidate the non-protected and pKVM view of ICH_VTR_EL2 to a
runtime-patched constant, allowing the same data to be shared with
pKVM prior to dropping host privileges
* Considerable pile of LLM-assisted fixes around the shop but mostly in
the VGIC, our in-kernel generator of bugs (and sometimes interrupts)
LoongArch:
* Advertise already-supported capabilities.
* Some bug fixes about timer and MMIO.
* Some hardening about interrupt injection.
* Replace kvm_err() with kvm_pr_unimpl().
* Add FPU/LSX/LASX test cases for selftests.
RISC-V:
* Svadu/Zicfiss/Zicfilp FWFT support for Guest
* Use try_cmpxchg for IMSIC MRIF RMW
* More arch-specific tracepoints in KVM RISC-V
* Eager page splitting when enabling dirty logging
* Optimize hfence request handling for SMP Guests
* Improve dirty log clearing by skipping zero bits in mask
* Guard HFENCE range loops against overflow
* CPU PM notifiers in KVM RISC-V for non-retentive idle states
* Fix kernel-mode vector context save/restore for Guest
s390:
* Fixes for vfio-ap
* Fixes for the gmap rework
* Fixes for vsie
* AI triggered fixes all over
* diag9c tracing
* code move preparation for the additional arm64 support
* enable CONTEXT_ANALYSIS
x86:
* Perform spring cleaning on x86.{c,h} and asm/kvm_host.h, by adding regs.c
(the kvm_cache_regs.h => regs.h is already applied) and msrs.{c,h}, and moving
relevant code out of x86.c.
* Split kvm_mmu in three parts, respectively to describe the format of page
tables, walking the guest page tables and building the page tables. Always
use the same page table walker kvm->arch.gva_walk as the entry point to
convert a guest's virtual address, where the previous code used two
different kvm_mmu structs depending on whether the walk included nested
EPT/NPT or not. Make page fault vmexits reuse the permission checking
machinery that is used for guest page faults. This is both a cleanup
and a baby step towards supporting XS/XU memory permissions.
* Document some of the "fun" gotchas with the APIC base when creating IRQCHIPs
on x86.
* Remove a defunct masterclock update from kvm_xen_shared_info_init(). It
could result in incorrect kvmclock due to triggering an unnecessary
switch to/from masterclock mode.
* Skip Xen runstate time updates if time has effectively gone backwards, so
that the guest doesn't report 100% steal time for a very, very long time.
* Drop KVM's runtime updates of the Xen PV timing CPUID leaf, as KVM was
updating the wrong sub-leaf, and upstream KVM will soon provide all the
information needed by userspace to populate the CPUID field itself.
* Fix a bug where KVM would walk a newly created rmap without holding the rmap
lock (or mmu_lock) during aging.
* Fix a bug where aging TDP MMU SPTEs could clobber FROZEN SPTEs.
* Fix a variety of #DB priority bugs.
* Fix a class of races related to enabling Hyper-V emulation on a vCPU after
the vCPU is visible to the rest of KVM.
* Use static calls for nested virtualization ops.
* Move more KVM-internal code out of x86's kvm_host.h.
* Enumerate support for a variety of Zhaoxin instructions that don't require
explicit virtualization.
* Fix missing EFER validation bugs, including in the KVM_SET_SREGS* path.
* Harden kvm_vcpu_map() against double-mapping and thus leaking references.
* Misc fixes and cleanups, e.g. for largely benign syzkaller splats.
x86 (Intel):
* Zero a vCPU's entry in VMX's Posted Interrupt Descriptor table used for IPI
virtualization when the vCPU is freed, to fix a use-after-free where hardware
will write to a freed vCPU's PID.
* Service local TLB flushes on a failed nested VM-Enter to fix a bug where KVM
could miss a TLB on a future, successful VM-Enter with the same L2 VPID.
* Cap the maximum value shoved into the VMX Preemption Timer to workaround an
erratum that affects all existing Intel CPUs that support CPUID 0x15.
* Fix VPID virtualization bugs where KVM would fail to flush hardware TLBs.
* Harden the TDX "populate" ioctls against bad input, and to prepare
for supporting in-place private<=>shared conversion.
x86 (AMD):
* Forcefully invalidate SNP VMSA pages if their backing guest_memfd page is
zapped/invalidated, e.g. due to a PUNCH_HOLE in response to a Page-State
Change request.
* Remove a dying VM from the GA Log notifier list before the VM is actually
destroyed, to fix a potential use-after-free.
* While FOLL_WRITE was needed in the past to trigger CoW unsharing, nowadays
FOLL_LONGTERM does that already even without FOLL_WRITE, and in fact,
get_user_pages() actually disallows FOLL_WRITE together with FOLL_LONGTERM.
So don't pass FOLL_WRITE when registering encrypted memory regions, i.e. when
pinning SEV/SEV-ES guest memory, to fix a regression with file-backed memory
introduced by KVM's (correct) usage of long-term pins.
(This was reviewed by mm maintainers; for more information, see commit
|
||
|
Linus Torvalds
|
93e4b3076b |
Char/Misc/IIO/etc driver update for 7.3-rc1
Here is the big set of char, misc, iio, counter, fpga, and other small
driver subsystems for 7.3-rc1.
Overall, due to some driver removals we only added a bit more code than
removed, which was a nice change. Highlights in this merge request are:
- Loads of IIO driver updates and additions
- binder driver updates (more on that below...)
- Removal of the SGI XP and GRU drivers as they are not used anymore
and turn out to be pretty insecure overall
- Removal of the obsolete ibmasm driver as it's not being used anymore
- Coresight driver updates and additions
- Mei driver udpates
- Counter driver updates
- FPGA driver updates
- ICC driver updates
- lots and lots of other tiny driver updates to resolve reported
issues
All of these have been in linux-next for a while, with the only reported
issues being some major merge conflicts. Miguel pointed out some of
these with the Rust tree merge, which is the majority of them. I'll
follow up with a diffstat of the merge resolution I made against your
most recent tree, which works for me.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc/IIO/etc driver updates from Greg KH:
"Here is the big set of char, misc, iio, counter, fpga, and other small
driver subsystems for 7.3-rc1.
Overall, due to some driver removals we only added a bit more code
than removed, which was a nice change. Highlights in this merge
request are:
- Loads of IIO driver updates and additions
- binder driver updates (more on that below...)
- Removal of the SGI XP and GRU drivers as they are not used anymore
and turn out to be pretty insecure overall
- Removal of the obsolete ibmasm driver as it's not being used
anymore
- Coresight driver updates and additions
- Mei driver udpates
- Counter driver updates
- FPGA driver updates
- ICC driver updates
- lots and lots of other tiny driver updates to resolve reported
issues
All of these have been in linux-next for a while"
* tag 'char-misc-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (513 commits)
iio: chemical: atlas-sensor: use iio_trigger_poll_nested() to fix remove UAF
iio: adc: pac1921: fix wrong channel used in trigger handler read
iio: light: gp2ap002: re-enable irq if runtime suspend fails
iio: light: gp2ap002: Fix unbalanced runtime PM on repeated event writes
iio: light: apds9306: fix PM reference leak in apds9306_read_data()
iio: gyro: mpu3050: fix sign of raw angular velocity readings
iio: srf04: fix pm_runtime handling on probe error path
iio: adc: ad4080: configure backend data size
iio: adc: adi-axi-adc: add data size support for AD408X backend
iio: chemical: atlas-sensor: fix PM reference leak in buffer postenable
iio: dac: ad5446: fix OF module device table
iio: light: opt4001: Fix reversed GENMASK() arguments in fault count mask
iio: light: opt4001: Reject integration times with a non-zero seconds part
iio: light: opt4001: Fix incompatible pointer type passed to div_u64_rem()
iio: light: opt4001: Fix power down clearing bits of the wrong register
iio: light: opt4060: Fix incorrect register name in threshold read error message
iio: light: opt4060: Fix pointer type passed to div_u64_rem()
iio: light: opt4060: Reject integration times with a non-zero seconds part
iio: light: ltrf216a: fix runtime PM reference leak in error path
iio: pressure: dps310: fix NULL pointer dereference on ACPI probe
...
|
||
|
Linus Torvalds
|
9cebfe6504 |
fuse update for 7.3
-----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQSQHSd0lITzzeNWNm3h3BK/laaZPAUCao1RzQAKCRDh3BK/laaZ PJ2EAP9dfslni4sFYqtXv/43Wk2iVwwdGRRSy5Tfoq8nCeNXpQEAygIv9BuJYpl6 DL861AOn/NfDBXpeU0vX4WQpTgtFIgc= =Av0t -----END PGP SIGNATURE----- Merge tag 'fuse-update-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse Pull fuse updates from Miklos Szeredi: - Improve performance of the io-uring transport by introducing buffer pools and zero-copy (Joanne) - Fix lots of bugs (Baokun Li) - Fix io-uring initialization issues (Joanne, Bernd) - More prep work for large folios (Joanne) - Don't limit buffered read to 128k (Jim Harris) - Fix zeroing of page end (dirtied with mmap) on file size extension (Jimmy Zuber) - Improve performance in certain cases with wake_up_sync() when queuing request (Xuewen Yan) - Misc fixes and cleanups (Xuewen Yan) * tag 'fuse-update-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse: (35 commits) fuse: zero the partial EOF page when extending a file io_uring: Add missing include for ITER_SOURCE and ITER_DEST fuse: Fix the condition to enable over-io-uring fuse: invalidate the correct range after O_APPEND direct write selftests/fuse: test post-EOF page zeroing when a file is extended fuse: wake one waiter per freed slot when raising max_background fuse: use min_not_zero() in fuse_init_server_timeout() fuse: copy request headers via a stack buffer for io-uring fuse: give wakeup hints to the scheduler for synchronous requests fuse: check for NULL root inode in fuse_fill_super_submount fuse: reject a duplicate fd= mount option cuse: wait for pending RCU callbacks on module exit fuse: fix invalidate lock leak on open O_TRUNC DAX failure fuse: fix invalidate lock leak on setattr writeback failure fuse: wait for FR_FINISHED on abort_on_kill to prevent use-after-free fuse: make dentry_tree_work static docs: fuse: document io-uring buffer pool and zero-copy uapi fuse: add zero-copy over io-uring fuse: support registered buffer pools in io-uring fuse: add io-uring buffer pools ... |
||
Karl Mehltretter
|
0685630fdc |
selftests/proc: make proc-maps-race work with READ_IMPLIES_EXEC
test_maps_tearing_from_split times out when READ_IMPLIES_EXEC is set.
This happens by default on pre-ARMv6 CPUs, which lack no-execute support.
split_vma() re-maps the first page with mod_info->prot | PROT_EXEC to make
it differ from its neighbours. With READ_IMPLIES_EXEC the original
mapping is already executable, so no split occurs and the test hangs
waiting for the modifier child.
Use PROT_NONE for the split mapping, which always differs from its
readable neighbours.
Link: https://lore.kernel.org/20260808200312.6326-1-kmehltretter@gmail.com
Fixes:
|
||
Liam R. Howlett (Oracle)
|
18d4f8e6e6 |
maple_tree: change two GFP flags in tests
The GFP flags in two tests are obviously incorrect. Make the tests correctly run by updating the GFP flags. Link: https://lore.kernel.org/all/d9cbb89faa5bdb71d451781d214a51ce8923a83e.camel@perches.com/ Link: https://lore.kernel.org/20260821192627.4085470-17-liam@infradead.org Signed-off-by: Liam R. Howlett (Oracle) <liam@infradead.org> Reported-by: Joe Perches <joe@perches.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Breno Leitao <leitao@debian.org> Cc: Chris Mason <clm@meta.com> Cc: Chuck Lever <cel@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@surriel.com> Cc: Waiman Long <longman@redhat.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
Anshuman
|
d16e52a9ba |
selftests/mm: check stat() return value in khugepaged get_finfo()
get_finfo() calls stat() to get metadata about the target directory, but never checks the return value. On failure, stat() returns -1 and leaves path_stat unmodified, so path_stat.st_mode may contain uninitialized stack data. The code then checks S_ISDIR(path_stat.st_mode) against this potentially garbage value. This can produce a misleading "Not a directory" error when the real problem is a nonexistent or inaccessible path, or, in the worst case, the check could pass by chance on garbage data and let the function continue using an invalid path_stat for the rest of its logic. Check the return value and fail with a clear error message if stat() fails, matching the error-handling style already used for statfs() and read_file() later in the same function. Link: https://lore.kernel.org/20260819121426.49500-1-anshumantewari123@gmail.com Signed-off-by: Anshuman <anshumantewari123@gmail.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: SJ Park <sj@kernel.org> Reviewed-by: Sarthak Sharma <sarthak.sharma@arm.com> Acked-by: David Hildenbrand (Arm) <david@kernel.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Anshuman
|
c7a4e939f8 |
selftests/mm: fix unchecked ftruncate return value in soft-dirty test
test_mprotect() calls ftruncate() to resize the backing file before mmap()'ing it, but never checks the return value. If ftruncate() fails, the file may remain shorter than the requested mapping size. The subsequent mmap() with MAP_SHARED can still succeed in this case, but the very next line writes directly into the mapped memory (*map = 1), which can trigger SIGBUS if the mapping extends beyond the actual file size. Check the return value and fail cleanly with ksft_exit_fail_msg() if ftruncate() fails, matching the error-handling style already used for the mmap() call immediately below it. Link: https://lore.kernel.org/20260818133206.39503-1-anshumantewari123@gmail.com Signed-off-by: Anshuman <anshumantewari123@gmail.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: David Hildenbrand <david@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
Hongfu Li
|
dd14e6cd33 |
selftests/mm: drop redundant open() in mprotect_tests()
Remove duplicate open() for local pagemap_fd in mprotect_tests() that shadows the global pagemap_fd already opened in main(). The local fd is never used in the function. Link: https://lore.kernel.org/20260817080616.52946-1-hongfu.li@linux.dev Signed-off-by: Hongfu Li <lihongfu@kylinos.cn> Reviewed-by: Lorenzo Stoakes (ARM) <ljs@kernel.org> Reviewed-by: Muhammad Usama Anjum <usama.anjum@arm.com> Reviewed-by: SJ Park <sj@kernel.org> Acked-by: David Hildenbrand (Arm) <david@kernel.org> Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Liam R. Howlett <liam@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
Wilson Felipe Pereira
|
6f615890b8 |
selftests/cgroup: test_zswap: skip test_no_kmem_bypass if debugfs is unavailable
test_no_kmem_bypass() needs to read /sys/kernel/debug/zswap/stored_pages via get_zswap_stored_pages() to verify that compressed pages are charged to the memcg. When running in an environment where debugfs is not mounted or CONFIG_DEBUG_FS is disabled, get_zswap_stored_pages() fails, causing the loop to terminate early and report a false negative (KSFT_FAIL). Selftests should not fail if debugfs is unavailable, and it should print a message when it is skipped. While I'm here, also add a warning message if the test is being skipped due to totalram size and make the check for totalram more readable. [akpm@linux-foundation.org: clarify debugfs-unavailable error message] Link: https://lore.kernel.org/20260812050848.848882-1-wfelipe@google.com Link: https://lore.kernel.org/20260811051434.3805648-1-wfelipe@google.com Signed-off-by: Wilson Felipe Pereira <wfelipe@google.com> Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com> Reviewed-by: SJ Park <sj@kernel.org> Cc: Chengming Zhou <chengming.zhou@linux.dev> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Koutný <mkoutny@suse.com> Cc: Nhat Pham <nphamcs@gmail.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
Breno Leitao
|
972195eb9b |
selftests/mm: kmemleak: drop stale min_unref_scans default from comments
The test writes min_unref_scans explicitly for every case, so its comments describing 1 as the default are both unnecessary and, since the default is now conditional, wrong. Refer to the threshold values directly. No functional change. Link: https://lore.kernel.org/20260731-kmemleak_hardened-v2-3-7b9689ac77cb@debian.org Signed-off-by: Breno Leitao <leitao@debian.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Cc: David Hildenbrand <david@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam R. Howlett <liam@infradead.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Breno Leitao
|
8f07855f57 |
selftests: mm: test kmemleak's N-consecutive-scan leak confirmation
Add a functional test for the min_unref_scans kmemleak module parameter. Using samples/kmemleak's helper module it checks that min_unref_scans=1 reports an orphan on the first scan, min_unref_scans=2 reports nothing on the first scan but does on the second, and that the parameter reads back what was written. It counts only the helper module's own orphans (matched by their [kmemleak_test] backtrace, with the module kept loaded so the symbols resolve) so unrelated leaks already present on the system do not perturb the result. The test skips when run as non-root, without CONFIG_DEBUG_KMEMLEAK / CONFIG_SAMPLE_KMEMLEAK, on a kernel without the parameter, or when the helper yields no detectable orphan. Link: https://lore.kernel.org/20260713-catalin_pto-v1-4-5b93b1131089@debian.org Signed-off-by: Breno Leitao <leitao@debian.org> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Cc: David Hildenbrand <david@kernel.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam R. Howlett <liam@infradead.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
Abhishek Bapat
|
923690d809 |
kselftest: alloc_tag: extend the allocinfo ioctl kselftest
Add the following 2 scenarios to the allocinfo ioctl kselftest: 1. Validate size based filtering 2. Validate lineno based filtering The first test uses "do_init_module" as the candidate function for the test. This is because the associated site will only allocate memory when a kernel module is loaded. The return value of get_content_id() changes every time modules are loaded or unloaded. Hence, as long as get_content_id() values at the start and the end of the test are the same, the memory allocated by the do_init_module call site should also remain the same. Consequently, the test can assume consistency between the value returned by the ioctl and the procfs resulting in less flakiness. Link: https://lore.kernel.org/e5171926b48802531284c1cb5f04734017141341.1783532853.git.abhishekbapat@google.com Signed-off-by: Abhishek Bapat <abhishekbapat@google.com> Tested-by: Hao Ge <hao.ge@linux.dev> Acked-by: Hao Ge <hao.ge@linux.dev> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: Sourav Panda <souravpanda@google.com> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Abhishek Bapat
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2f252a7a6c |
kselftest: alloc_tag: add kselftest for ioctl interface
Introduce a kselftest to verify the new IOCTL-based interface for /proc/allocinfo. The test covers: 1. Validation of the filename filter. 2. Validation of the function filter. The first test validates the functionality of the filename filter. Using "mm/memory.c" as the candidate filename filter, it retrieves filtered entries from both procfs and ioctl and matches the first VEC_MAX_ENTRIES entries. The second test validates the functionality of the function filter. It uses "dup_mm" as the candidate function as we do not expect this function name to change frequently and hence won't be needing to modify this test often. Note that both the tests match line no, function name and file name fields. Bytes allocated and calls are not matched as those values may change in the time when the data is being read from procfs and ioctl and hence can lead to false negatives. [abhishekbapat@google.com: fix a typo in the selftest] Link: https://lore.kernel.org/e4e49ec4a5960292aeeb9e196526c18dc95228a2.1785867739.git.abhishekbapat@google.com Closes: https://sashiko.dev/#/patchset/cover.1783532853.git.abhishekbapat@google.com Link: https://lore.kernel.org/e2a3795677a14aeab249758ba570cd5e98402032.1783532853.git.abhishekbapat@google.com Signed-off-by: Abhishek Bapat <abhishekbapat@google.com> Tested-by: Hao Ge <hao.ge@linux.dev> Acked-by: Hao Ge <hao.ge@linux.dev> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: Sourav Panda <souravpanda@google.com> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Ethan Nelson-Moore
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22709abff9 |
mm: fix CONFIG_STACK_GROWSUP typo in tools/testing/vma/include/dup.h
Commit |
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Hongfu Li
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4050b5b0b6 |
selftests/mm: fix read_file() return value check
read_file() returns 0 on open/read failures and never returns negative
values. Existing < 0 error checks never trigger, so read failures are
silently ignored. Check for zero return to detect read_file() failures.
Also fix misleading error message in get_finfo(). The error string
incorrectly references read_num when reading uevent files.
Link: https://lore.kernel.org/20260807013555.36525-1-hongfu.li@linux.dev
Fixes:
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Muhammad Usama Anjum
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746c94b7cb |
selftests/mm: retry migration failures for the full runtime
move_pages() is best effort and can temporarily fail when concurrent faults race with page unmapping. A busy shared-anon workload can exhaust the current 100 retries long before the intended 20-second runtime and produce a false failure. Use the full runtime as the retry window. Since the initial page location is unknown, require it to reach both alternating NUMA targets to confirm that cross-node migration made progress despite transient contention. Link: https://lore.kernel.org/20260727095225.372655-6-usama.anjum@arm.com Signed-off-by: Muhammad Usama Anjum <usama.anjum@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Liam R. Howlett <liam@infradead.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Naoya Horiguchi <nao.horiguchi@gmail.com> Cc: Nico Pache <npache@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Usama Arif <usama.arif@linux.dev> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Muhammad Usama Anjum
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e14e52a7ce |
selftests/mm: skip hard dirty page-cache test on NFS
The hard dirty_pagecache variant uses MADV_HWPOISON to exercise recovery of a dirty file-backed page. The recovery path records -EIO in the address_space mapping, which NFS later reports when the test closes the file. This makes the test fail after the hwpoison checks have completed. Skip this variant when the test file is on NFS. Keep the hard clean-page and both soft-offline variants enabled because they use folio removal, invalidation, or migration rather than recording a delayed writeback error. The unsupported-filesystem path in clean_pagecache() also returns without closing the opened test file. Close the descriptor before skipping there and in dirty_pagecache(). Link: https://lore.kernel.org/20260727095225.372655-5-usama.anjum@arm.com Signed-off-by: Muhammad Usama Anjum <usama.anjum@arm.com> Reviewed-by: Miaohe Lin <linmiaohe@huawei.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Liam R. Howlett <liam@infradead.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Naoya Horiguchi <nao.horiguchi@gmail.com> Cc: Nico Pache <npache@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Usama Arif <usama.arif@linux.dev> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Muhammad Usama Anjum
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e5220e4d93 |
selftests/mm: skip guard hole-punch test if MADV_REMOVE is unsupported
The hole_punch case verifies that guard regions survive MADV_REMOVE and that the backing range is punched out. MADV_REMOVE delegates the hole punch to the backing filesystem, which may reject the operation with EOPNOTSUPP. That result means the test cannot establish the state whose guard semantics it intends to validate. Treating the missing filesystem capability as a guard-region failure creates a false regression. Unmap the range and skip only when MADV_REMOVE fails with EOPNOTSUPP. Preserve the assertion for all other errors so failures on supported configurations remain visible. Link: https://lore.kernel.org/20260727095225.372655-3-usama.anjum@arm.com Signed-off-by: Muhammad Usama Anjum <usama.anjum@arm.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Acked-by: Usama Arif <usama.arif@linux.dev> Acked-by: David Hildenbrand (Arm) <david@kernel.org> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Liam R. Howlett <liam@infradead.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Naoya Horiguchi <nao.horiguchi@gmail.com> Cc: Nico Pache <npache@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Muhammad Usama Anjum
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4004c130c3 |
selftests/mm: skip COW tmpfile cases when fallocate() is unsupported
Patch series "selftests/mm: Handle unsupported and transient test
conditions", v3.
Several MM selftests report failures when the test environment lacks
an underlying prerequisite, such as fallocate() support, MADV_REMOVE,
local page-cache semantics, or swap.
This series converts those unsupported cases to SKIP while preserving
failures for unexpected errors. It also allows migration tests to retry
transient move_pages() failures.
This patch (of 4):
The tmpfile-backed COW cases allocate a one-page file with fallocate()
before exercising private and shared mappings. When the filesystem
backing tmpfile() does not implement fallocate(), setup fails with
EOPNOTSUPP and no COW behavior is exercised.
This occurs when the temporary directory resides on a filesystem with
limited allocation support, such as NFSv3. Reporting a failure adds noise
because the test prerequisite is absent rather than the COW implementation
being broken.
Report EOPNOTSUPP as a skip. Continue treating every other fallocate()
error as a failure so unexpected setup regressions remain visible.
Link: https://lore.kernel.org/20260727095225.372655-1-usama.anjum@arm.com
Link: https://lore.kernel.org/20260727095225.372655-2-usama.anjum@arm.com
Fixes:
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Audra Mitchell
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dc924f0f85 |
selftests/mm/vm_util.c: correct __pagemap_scan_get_categories return value
Currently __pagemap_scan_get_categories returns the result from the ioctl call which should be an int, not uint64_t. The ioctl may return -1 on error, which will be interpreted as UINT64_MAX. Adjust the return type to use the correct value. Link: https://lore.kernel.org/20260806150339.1824251-2-audra@redhat.com Signed-off-by: Audra Mitchell <audra@redhat.com> Reviewed-by: Liam R. Howlett (Oracle) <liam@infradead.org> Acked-by: David Hildenbrand (Arm) <david@kernel.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Hongfu Li
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4b82a0b91b |
selftests/mm: drop duplicate test_seal_mprotect_two_vma_with_gap() call
mseal_test main() invokes test_seal_mprotect_two_vma_with_gap() twice. The second run repeats all assertions with no benefit. Drop the duplicate call. Link: https://lore.kernel.org/20260806030850.76077-1-hongfu.li@linux.dev Signed-off-by: Hongfu Li <lihongfu@kylinos.cn> Reviewed-by: Lorenzo Stoakes (ARM) <ljs@kernel.org> Acked-by: David Hildenbrand (Arm) <david@kernel.org> Reviewed-by: SJ Park <sj@kernel.org> Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Liam R. Howlett <liam@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Baolin Wang
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76f134aabb |
selftests: mm: add mTHP collapse test cases
Added a new command 'mthp_khugepaged' for mTHP collapse, along with the '-c' parameter to specify the collapse order. Additionally, added mTHP collapse test cases for 'collapse_full', 'collapse_empty', and 'collapse_single_mthp' for anonymous folios. All khugepaged test cases passed. Link: https://lore.kernel.org/f260058520214a9611922a96326bc54ba282fb73.1785985999.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Reviewed-by: Nico Pache (Red Hat) <nico.pache@linux.dev> Tested-by: Nico Pache (Red Hat) <nico.pache@linux.dev> Acked-by: Kiryl Shutsemau (Meta) <kas@kernel.org> Acked-by: Zi Yan <ziy@nvidia.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Liam R. Howlett <liam@infradead.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Ryan Roberts <ryan.roberts@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Baolin Wang
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6dedaf0d46 |
selftests: mm: implement the mTHP-sized hugepage check helpers
Implement mTHP-sized hugepage checking helpers using gather_folio_orders(). Also rename the existing PMD-sized huge page check function to __check_pmd_huge() for clarity. Link: https://lore.kernel.org/56b16691f605426b33b5cf47319233de6127a6b3.1785985999.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Reviewed-by: Nico Pache (Red Hat) <nico.pache@linux.dev> Tested-by: Nico Pache (Red Hat) <nico.pache@linux.dev> Acked-by: Kiryl Shutsemau (Meta) <kas@kernel.org> Reviewed-by: Zi Yan <ziy@nvidia.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Liam R. Howlett <liam@infradead.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Ryan Roberts <ryan.roberts@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Baolin Wang
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6995150ede |
selftests: mm: move gather_after_split_folio_orders() into vm_util.c file
Move gather_after_split_folio_orders() to vm_util.c as a helper function in preparation for implementing checks for mTHP collapse. While we are at it, rename this function to indicate that it is not only used for large folio splits. No functional changes. Link: https://lore.kernel.org/30a0a99556adf11c2bf97aa08d6da4830bb43f6f.1785985999.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Reviewed-by: Nico Pache (Red Hat) <nico.pache@linux.dev> Tested-by: Nico Pache (Red Hat) <nico.pache@linux.dev> Reviewed-by: Zi Yan <ziy@nvidia.com> Acked-by: Kiryl Shutsemau (Meta) <kas@kernel.org> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Liam R. Howlett <liam@infradead.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Ryan Roberts <ryan.roberts@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |