For the HMAC-MD5 computations in NTLMv2, use the HMAC-MD5 library
instead of a "hmac(md5)" crypto_shash. This is simpler and faster.
With the library there's no need to allocate memory, no need to handle
errors, and the HMAC-MD5 code is accessed directly without inefficient
indirect calls and other unnecessary API overhead.
To preserve the existing behavior of NTLMv2 support being disabled when
the kernel is booted with "fips=1", make setup_ntlmv2_rsp() check
fips_enabled itself. Previously it relied on the error from
cifs_alloc_hash("hmac(md5)", &hmacmd5).
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Convert cifs_calc_signature() to use the MD5 library instead of a "md5"
crypto_shash. This is simpler and faster. With the library there's no
need to allocate memory, no need to handle errors, and the MD5 code is
accessed directly without inefficient indirect calls and other
unnecessary API overhead.
To preserve the existing behavior of MD5 signature support being
disabled when the kernel is booted with "fips=1", make
cifs_calc_signature() check fips_enabled itself. Previously it relied
on the error from cifs_alloc_hash("md5", &server->secmech.md5).
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Convert parse_mf_symlink() and format_mf_symlink() to use the MD5
library instead of a "md5" crypto_shash. This is simpler and faster.
With the library there's no need to allocate memory, no need to handle
errors, and the MD5 code is accessed directly without inefficient
indirect calls and other unnecessary API overhead.
This also fixes an issue where these functions did not work on kernels
booted in FIPS mode. The use of MD5 here is for data integrity rather
than a security purpose, so it can use a non-FIPS-approved algorithm.
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Convert smb2_calc_signature() to use the HMAC-SHA256 library instead of
a "hmac(sha256)" crypto_shash. This is simpler and faster. With the
library there's no need to allocate memory, no need to handle errors,
and the HMAC-SHA256 code is accessed directly without inefficient
indirect calls and other unnecessary API overhead.
To make this possible, make __cifs_calc_signature() support both the
HMAC-SHA256 library and crypto_shash. (crypto_shash is still needed for
HMAC-MD5 and AES-CMAC. A later commit will switch HMAC-MD5 from shash
to the library. I'd like to eventually do the same for AES-CMAC, but it
doesn't have a library API yet. So for now, shash is still needed.)
Also remove the unnecessary 'sigptr' variable.
For now smb3_crypto_shash_allocate() still allocates a "hmac(sha256)"
crypto_shash. It will be removed in a later commit.
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Convert generate_key() to use the HMAC-SHA256 library instead of a
"hmac(sha256)" crypto_shash. This is simpler and faster. With the
library there's no need to allocate memory, no need to handle errors,
and the HMAC-SHA256 code is accessed directly without inefficient
indirect calls and other unnecessary API overhead.
Also remove the unnecessary 'hashptr' variable.
For now smb3_crypto_shash_allocate() still allocates a "hmac(sha256)"
crypto_shash. It will be removed in a later commit.
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Convert smb311_update_preauth_hash() to use the SHA-512 library instead
of a "sha512" crypto_shash. This is simpler and faster. With the
library there's no need to allocate memory, no need to handle errors,
and the SHA-512 code is accessed directly without inefficient indirect
calls and other unnecessary API overhead.
Remove the call to smb311_crypto_shash_allocate() from
smb311_update_preauth_hash(), since it appears to have been needed only
to allocate the "sha512" crypto_shash. (It also had the side effect of
allocating the "cmac(aes)" crypto_shash, but that's also done in
generate_key() which is where the AES-CMAC key is initialized.)
For now the "sha512" crypto_shash is still being allocated elsewhere.
It will be removed in a later commit.
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Malicious SMB server can send invalid reply to FSCTL_DFS_GET_REFERRALS
- reply smaller than sizeof(struct get_dfs_referral_rsp)
- reply with number of referrals smaller than NumberOfReferrals in the
header
Processing of such replies will cause oob.
Return -EINVAL error on such replies to prevent oob-s.
Signed-off-by: Eugene Korenevsky <ekorenevsky@aliyun.com>
Cc: stable@vger.kernel.org
Suggested-by: Nathan Chancellor <nathan@kernel.org>
Acked-by: Paulo Alcantara (Red Hat) <pc@manguebit.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Fix three refcount inconsistency issues related to `cifs_sb_tlink`.
Comments for `cifs_sb_tlink` state that `cifs_put_tlink()` needs to be
called after successful calls to `cifs_sb_tlink()`. Three calls fail to
update refcount accordingly, leading to possible resource leaks.
Fixes: 8ceb984379 ("CIFS: Move rename to ops struct")
Fixes: 2f1afe2599 ("cifs: Use smb 2 - 3 and cifsacl mount options getacl functions")
Fixes: 366ed846df ("cifs: Use smb 2 - 3 and cifsacl mount options setacl function")
Cc: stable@vger.kernel.org
Signed-off-by: Shuhao Fu <sfual@cse.ust.hk>
Signed-off-by: Steve French <stfrench@microsoft.com>
dev->chipid is used in lan78xx_init_mac_address before it's initialized:
lan78xx_reset() {
lan78xx_init_mac_address()
lan78xx_read_eeprom()
lan78xx_read_raw_eeprom() <- dev->chipid is used here
dev->chipid = ... <- dev->chipid is initialized correctly here
}
Reorder initialization so that dev->chipid is set before calling
lan78xx_init_mac_address().
Fixes: a0db7d10b7 ("lan78xx: Add to handle mux control per chip id")
Signed-off-by: I Viswanath <viswanathiyyappan@gmail.com>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Reviewed-by: Khalid Aziz <khalid@kernel.org>
Link: https://patch.msgid.link/20251013181648.35153-1-viswanathiyyappan@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'linux-can-fixes-for-6.18-20251014' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can
Marc Kleine-Budde says:
====================
pull-request: can 2025-10-14
The first 2 paches are by Celeste Liu and target the gS_usb driver.
The first patch remove the limitation to 3 CAN interface per USB
device. The second patch adds the missing population of
net_device->dev_port.
The next 4 patches are by me and fix the m_can driver. They add a
missing pm_runtime_disable(), fix the CAN state transition back to
Error Active and fix the state after ifup and suspend/resume.
Another patch by me targets the m_can driver, too and replaces Dong
Aisheng's old email address.
The next 2 patches are by Vincent Mailhol and update the CAN
networking Documentation.
Tetsuo Handa contributes the last patch that add missing cleanup calls
in the NETDEV_UNREGISTER notification handler.
* tag 'linux-can-fixes-for-6.18-20251014' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can:
can: j1939: add missing calls in NETDEV_UNREGISTER notification handler
can: add Transmitter Delay Compensation (TDC) documentation
can: remove false statement about 1:1 mapping between DLC and length
can: m_can: replace Dong Aisheng's old email address
can: m_can: fix CAN state in system PM
can: m_can: m_can_chip_config(): bring up interface in correct state
can: m_can: m_can_handle_state_errors(): fix CAN state transition to Error Active
can: m_can: m_can_plat_remove(): add missing pm_runtime_disable()
can: gs_usb: gs_make_candev(): populate net_device->dev_port
can: gs_usb: increase max interface to U8_MAX
====================
Link: https://patch.msgid.link/20251014122140.990472-1-mkl@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Bringing a linked netdevsim device down and then up causes communication
failure because both interfaces lack carrier. Basically a ifdown/ifup on
the interface make the link broken.
Commit 3762ec05a9 ("netdevsim: add NAPI support") added supported
for NAPI, calling netif_carrier_off() in nsim_stop(). This patch
re-enables the carrier symmetrically on nsim_open(), in case the device
is linked and the peer is up.
Signed-off-by: Breno Leitao <leitao@debian.org>
Fixes: 3762ec05a9 ("netdevsim: add NAPI support")
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20251014-netdevsim_fix-v2-1-53b40590dae1@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Sabrina Dubroca says:
====================
tls: misc bugfixes
Jann Horn reported multiple bugs in kTLS. This series addresses them,
and adds some corresponding selftests for those that are reproducible
(and without failure injection).
====================
Link: https://patch.msgid.link/cover.1760432043.git.sd@queasysnail.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
We don't have a test triggering a partial splice caused by a full
skmsg. Add one, based on a program by Jann Horn.
Use MAX_FRAGS=48 to make sure the skmsg will be full for any allowed
value of CONFIG_MAX_SKB_FRAGS (17..45).
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Link: https://patch.msgid.link/1d129a15f526ea3602f3a2b368aa0b6f7e0d35d5.1760432043.git.sd@queasysnail.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
We don't have a test to check that MSG_MORE won't let us merge records
of different types across sendmsg calls.
Add new tests that check:
- MSG_MORE is only allowed for DATA records
- a pending DATA record gets closed and pushed before a non-DATA
record is processed
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Link: https://patch.msgid.link/b34feeadefe8a997f068d5ed5617afd0072df3c0.1760432043.git.sd@queasysnail.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
With async crypto, we rely on tx_work to actually transmit records
once encryption completes. But while send() is running, both the
tx_lock and socket lock are held, so tx_work_handler cannot process
the queue of encrypted records, and simply reschedules itself. During
a large send(), this could last a long time, and use a lot of memory.
Transmit any pending encrypted records before restarting the main
loop of tls_sw_sendmsg_locked.
Fixes: a42055e8d2 ("net/tls: Add support for async encryption of records for performance")
Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Link: https://patch.msgid.link/8396631478f70454b44afb98352237d33f48d34d.1760432043.git.sd@queasysnail.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Async decryption calls tls_strp_msg_hold to create a clone of the
input skb to hold references to the memory it uses. If we fail to
allocate that clone, proceeding with async decryption can lead to
various issues (UAF on the skb, writing into userspace memory after
the recv() call has returned).
In this case, wait for all pending decryption requests.
Fixes: 84c61fe1a7 ("tls: rx: do not use the standard strparser")
Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Link: https://patch.msgid.link/b9fe61dcc07dab15da9b35cf4c7d86382a98caf2.1760432043.git.sd@queasysnail.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When userspace wants to send a non-DATA record (via the
TLS_SET_RECORD_TYPE cmsg), we need to send any pending data from a
previous MSG_MORE send() as a separate DATA record. If that DATA record
is encrypted asynchronously, tls_handle_open_record will return
-EINPROGRESS. This is currently treated as an error by
tls_process_cmsg, and it will skip setting record_type to the correct
value, but the caller (tls_sw_sendmsg_locked) handles that return
value correctly and proceeds with sending the new message with an
incorrect record_type (DATA instead of whatever was requested in the
cmsg).
Always set record_type before handling the open record. If
tls_handle_open_record returns an error, record_type will be
ignored. If it succeeds, whether with synchronous crypto (returning 0)
or asynchronous (returning -EINPROGRESS), the caller will proceed
correctly.
Fixes: a42055e8d2 ("net/tls: Add support for async encryption of records for performance")
Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Link: https://patch.msgid.link/0457252e578a10a94e40c72ba6288b3a64f31662.1760432043.git.sd@queasysnail.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
If we hit an error during the main loop of tls_sw_sendmsg_locked (eg
failed allocation), we jump to send_end and immediately
return. Previous iterations may have queued async encryption requests
that are still pending. We should wait for those before returning, as
we could otherwise be reading from memory that userspace believes
we're not using anymore, which would be a sort of use-after-free.
This is similar to what tls_sw_recvmsg already does: failures during
the main loop jump to the "wait for async" code, not straight to the
unlock/return.
Fixes: a42055e8d2 ("net/tls: Add support for async encryption of records for performance")
Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Link: https://patch.msgid.link/c793efe9673b87f808d84fdefc0f732217030c52.1760432043.git.sd@queasysnail.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
During tls_sw_sendmsg_locked, we pre-allocate the encrypted message
for the size we're expecting to send during the current iteration, but
we may end up sending less, for example when splicing: if we're
getting the data from small fragments of memory, we may fill up all
the slots in the skmsg with less data than expected.
In this case, we need to trim the encrypted message to only the length
we actually need, to avoid pushing uninitialized bytes down the
underlying TCP socket.
Fixes: fe1e81d4f7 ("tls/sw: Support MSG_SPLICE_PAGES")
Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Link: https://patch.msgid.link/66a0ae99c9efc15f88e9e56c1f58f902f442ce86.1760432043.git.sd@queasysnail.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Some execution paths that jump to the fiber_setup_done label
could leave the remote_adv and local_adv variables uninitialized
and then use it.
Initialize this variables at the point of definition to avoid this.
Fixes: 85730a631f ("tg3: Add SGMII phy support for 5719/5718 serdes")
Co-developed-by: Alexandr Sapozhnikov <alsp705@gmail.com>
Signed-off-by: Alexandr Sapozhnikov <alsp705@gmail.com>
Signed-off-by: Alexey Simakov <bigalex934@gmail.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Link: https://patch.msgid.link/20251014164736.5890-1-bigalex934@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Create a maintainer entry for IPv6 IOAM. Add myself as I authored most
if not all of the IPv6 IOAM code in the kernel and actively participate
in the related IETF groups.
Signed-off-by: Justin Iurman <justin.iurman@uliege.be>
Link: https://patch.msgid.link/20251014170650.27679-1-justin.iurman@uliege.be
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'vfs-6.18-rc2.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs fixes from Christian Brauner:
- Handle inode number mismatches in nsfs file handles
- Update the comment to init_file()
- Add documentation link for EBADF in the rust file code
- Skip read lock assertion for read-only filesystems when using dax
- Don't leak disconnected dentries during umount
- Fix new coredump input pattern validation
- Handle ENOIOCTLCMD conversion in vfs_fileattr_{g,s}et() correctly
- Remove redundant IOCB_DIO_CALLER_COMP clearing in overlayfs
* tag 'vfs-6.18-rc2.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
ovl: remove redundant IOCB_DIO_CALLER_COMP clearing
fs: return EOPNOTSUPP from file_setattr/file_getattr syscalls
Revert "fs: make vfs_fileattr_[get|set] return -EOPNOTSUPP"
coredump: fix core_pattern input validation
vfs: Don't leak disconnected dentries on umount
dax: skip read lock assertion for read-only filesystems
rust: file: add intra-doc link for 'EBADF'
fs: update comment in init_file()
nsfs: handle inode number mismatches gracefully in file handles
When performing memory error injection on a THP (Transparent Huge Page)
mapped to userspace on an x86 server, the kernel panics with the following
trace. The expected behavior is to terminate the affected process instead
of panicking the kernel, as the x86 Machine Check code can recover from an
in-userspace #MC.
mce: [Hardware Error]: CPU 0: Machine Check Exception: f Bank 3: bd80000000070134
mce: [Hardware Error]: RIP 10:<ffffffff8372f8bc> {memchr_inv+0x4c/0xf0}
mce: [Hardware Error]: TSC afff7bbff88a ADDR 1d301b000 MISC 80 PPIN 1e741e77539027db
mce: [Hardware Error]: PROCESSOR 0:d06d0 TIME 1758093249 SOCKET 0 APIC 0 microcode 80000320
mce: [Hardware Error]: Run the above through 'mcelog --ascii'
mce: [Hardware Error]: Machine check: Data load in unrecoverable area of kernel
Kernel panic - not syncing: Fatal local machine check
The root cause of this panic is that handling a memory failure triggered
by an in-userspace #MC necessitates splitting the THP. The splitting
process employs a mechanism, implemented in
try_to_map_unused_to_zeropage(), which reads the pages in the THP to
identify zero-filled pages. However, reading the pages in the THP results
in a second in-kernel #MC, occurring before the initial memory_failure()
completes, ultimately leading to a kernel panic. See the kernel panic
call trace on the two #MCs.
First Machine Check occurs // [1]
memory_failure() // [2]
try_to_split_thp_page()
split_huge_page()
split_huge_page_to_list_to_order()
__folio_split() // [3]
remap_page()
remove_migration_ptes()
remove_migration_pte()
try_to_map_unused_to_zeropage() // [4]
memchr_inv() // [5]
Second Machine Check occurs // [6]
Kernel panic
[1] Triggered by accessing a hardware-poisoned THP in userspace, which is
typically recoverable by terminating the affected process.
[2] Call folio_set_has_hwpoisoned() before try_to_split_thp_page().
[3] Pass the RMP_USE_SHARED_ZEROPAGE remap flag to remap_page().
[4] Try to map the unused THP to zeropage.
[5] Re-access pages in the hw-poisoned THP in the kernel.
[6] Triggered in-kernel, leading to a panic kernel.
In Step[2], memory_failure() sets the poisoned flag on the page in the THP
by TestSetPageHWPoison() before calling try_to_split_thp_page().
As suggested by David Hildenbrand, fix this panic by not accessing to the
poisoned page in the THP during zeropage identification, while continuing
to scan unaffected pages in the THP for possible zeropage mapping. This
prevents a second in-kernel #MC that would cause kernel panic in Step[4].
Thanks to Andrew Zaborowski for his initial work on fixing this issue.
Link: https://lkml.kernel.org/r/20251015064926.1887643-1-qiuxu.zhuo@intel.com
Link: https://lkml.kernel.org/r/20251011075520.320862-1-qiuxu.zhuo@intel.com
Fixes: b1f202060a ("mm: remap unused subpages to shared zeropage when splitting isolated thp")
Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Reported-by: Farrah Chen <farrah.chen@intel.com>
Suggested-by: David Hildenbrand <david@redhat.com>
Acked-by: David Hildenbrand <david@redhat.com>
Tested-by: Farrah Chen <farrah.chen@intel.com>
Tested-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Acked-by: Lance Yang <lance.yang@linux.dev>
Reviewed-by: Wei Yang <richard.weiyang@gmail.com>
Acked-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Jiaqi Yan <jiaqiyan@google.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Mariano Pache <npache@redhat.com>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
The extent map cache can become stale when extents are moved or
defragmented, causing subsequent operations to see outdated extent flags.
This triggers a BUG_ON in ocfs2_refcount_cal_cow_clusters().
The problem occurs when:
1. copy_file_range() creates a reflinked extent with OCFS2_EXT_REFCOUNTED
2. ioctl(FITRIM) triggers ocfs2_move_extents()
3. __ocfs2_move_extents_range() reads and caches the extent (flags=0x2)
4. ocfs2_move_extent()/ocfs2_defrag_extent() calls __ocfs2_move_extent()
which clears OCFS2_EXT_REFCOUNTED flag on disk (flags=0x0)
5. The extent map cache is not invalidated after the move
6. Later write() operations read stale cached flags (0x2) but disk has
updated flags (0x0), causing a mismatch
7. BUG_ON(!(rec->e_flags & OCFS2_EXT_REFCOUNTED)) triggers
Fix by clearing the extent map cache after each extent move/defrag
operation in __ocfs2_move_extents_range(). This ensures subsequent
operations read fresh extent data from disk.
Link: https://lore.kernel.org/all/20251009142917.517229-1-kartikey406@gmail.com/T/
Link: https://lkml.kernel.org/r/20251009154903.522339-1-kartikey406@gmail.com
Fixes: 53069d4e76 ("Ocfs2/move_extents: move/defrag extents within a certain range.")
Signed-off-by: Deepanshu Kartikey <kartikey406@gmail.com>
Reported-by: syzbot+6fdd8fa3380730a4b22c@syzkaller.appspotmail.com
Tested-by: syzbot+6fdd8fa3380730a4b22c@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?id=2959889e1f6e216585ce522f7e8bc002b46ad9e7
Reviewed-by: Mark Fasheh <mark@fasheh.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Jun Piao <piaojun@huawei.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
syzbot was able to find the following path:
add_stack_record_to_list mm/page_owner.c:182 [inline]
inc_stack_record_count mm/page_owner.c:214 [inline]
__set_page_owner+0x2c3/0x4a0 mm/page_owner.c:333
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1851
prep_new_page mm/page_alloc.c:1859 [inline]
get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3858
alloc_pages_nolock_noprof+0x94/0x120 mm/page_alloc.c:7554
Don't spin in add_stack_record_to_list() when it is called
from *_nolock() context.
Link: https://lkml.kernel.org/r/CAADnVQK_8bNYEA7TJYgwTYR57=TTFagsvRxp62pFzS_z129eTg@mail.gmail.com
Fixes: 97769a53f1 ("mm, bpf: Introduce try_alloc_pages() for opportunistic page allocation")
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reported-by: syzbot+8259e1d0e3ae8ed0c490@syzkaller.appspotmail.com
Reported-by: syzbot+665739f456b28f32b23d@syzkaller.appspotmail.com
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Cc: Brendan Jackman <jackmanb@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Zi Yan <ziy@nvidia.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Commit 370645f41e ("dma-mapping: force bouncing if the kmalloc() size is
not cache-line-aligned") introduced DMA_BOUNCE_UNALIGNED_KMALLOC feature
and permitted architecture specific code configure kmalloc slabs with
sizes smaller than the value of dma_get_cache_alignment().
When that feature is enabled, the physical address of some small
kmalloc()-ed buffers might be not aligned to the CPU cachelines, thus not
really suitable for typical DMA. To properly handle that case a SWIOTLB
buffer bouncing is used, so no CPU cache corruption occurs. When that
happens, there is no point reporting a false-positive DMA-API warning that
the buffer is not properly aligned, as this is not a client driver fault.
[m.szyprowski@samsung.com: replace is_swiotlb_allocated() with is_swiotlb_active(), per Catalin]
Link: https://lkml.kernel.org/r/20251010173009.3916215-1-m.szyprowski@samsung.com
Link: https://lkml.kernel.org/r/20251009141508.2342138-1-m.szyprowski@samsung.com
Fixes: 370645f41e ("dma-mapping: force bouncing if the kmalloc() size is not cache-line-aligned")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Inki Dae <m.szyprowski@samsung.com>
Cc: Robin Murohy <robin.murphy@arm.com>
Cc: "Isaac J. Manjarres" <isaacmanjarres@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
The damon_ctx for testing online DAMON parameters commit inputs is
deallocated only when the test fails. This means memory is leaked for
every successful online DAMON parameters commit. Fix the leak by always
deallocating it.
Link: https://lkml.kernel.org/r/20251003201455.41448-3-sj@kernel.org
Fixes: 4c9ea539ad ("mm/damon/sysfs: validate user inputs from damon_sysfs_commit_input()")
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: <stable@vger.kernel.org> [6.15+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Patch series "mm/damon/sysfs: fix commit test damon_ctx [de]allocation".
DAMON sysfs interface dynamically allocates and uses a damon_ctx object
for testing if given inputs for online DAMON parameters update is valid.
The object is being used without an allocation failure check, and leaked
when the test succeeds. Fix the two bugs.
This patch (of 2):
The damon_ctx for testing online DAMON parameters commit inputs is used
without its allocation failure check. This could result in an invalid
memory access. Fix it by directly returning an error when the allocation
failed.
Link: https://lkml.kernel.org/r/20251003201455.41448-1-sj@kernel.org
Link: https://lkml.kernel.org/r/20251003201455.41448-2-sj@kernel.org
Fixes: 4c9ea539ad ("mm/damon/sysfs: validate user inputs from damon_sysfs_commit_input()")
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: <stable@vger.kernel.org> [6.15+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
The blocker tracking mechanism assumes that lock pointers are at least
4-byte aligned to use their lower bits for type encoding.
However, as reported by Eero Tamminen, some architectures like m68k
only guarantee 2-byte alignment of 32-bit values. This breaks the
assumption and causes two related WARN_ON_ONCE checks to trigger.
To fix this, the runtime checks are adjusted to silently ignore any lock
that is not 4-byte aligned, effectively disabling the feature in such
cases and avoiding the related warnings.
Thanks to Geert Uytterhoeven for bisecting!
Link: https://lkml.kernel.org/r/20250909145243.17119-1-lance.yang@linux.dev
Fixes: e711faaafb ("hung_task: replace blocker_mutex with encoded blocker")
Signed-off-by: Lance Yang <lance.yang@linux.dev>
Reported-by: Eero Tamminen <oak@helsinkinet.fi>
Closes: https://lore.kernel.org/lkml/CAMuHMdW7Ab13DdGs2acMQcix5ObJK0O2dG_Fxzr8_g58Rc1_0g@mail.gmail.com
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Anna Schumaker <anna.schumaker@oracle.com>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Finn Thain <fthain@linux-m68k.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Joel Granados <joel.granados@kernel.org>
Cc: John Stultz <jstultz@google.com>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Lance Yang <lance.yang@linux.dev>
Cc: Mingzhe Yang <mingzhe.yang@ly.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Tomasz Figa <tfiga@chromium.org>
Cc: Waiman Long <longman@redhat.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yongliang Gao <leonylgao@tencent.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Both the read and write side use kiocb_done() to finish a request, and
kiocb_done() will call io_put_kbuf() in case a provided buffer was used
for the request. Provided buffers are not supported for writes, hence
NULL is being passed in. This normally works fine, as io_put_kbuf()
won't actually use the value unless REQ_F_BUFFER_RING or
REQ_F_BUFFER_SELECTED is set in the request flags. But depending on
compiler (or whether or not CONFIG_CC_OPTIMIZE_FOR_SIZE is set), that
may be done even though the value is never used. This will then cause a
NULL pointer dereference.
Make it a bit more obvious and check for a NULL io_br_sel, and don't
even bother calling io_put_kbuf() for that case.
Fixes: 5fda512554 ("io_uring/kbuf: switch to storing struct io_buffer_list locally")
Reported-by: David Howells <dhowells@redhat.com>
Tested-by: David Howells <dhowells@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The S5_RESET_STATUS register is parsed on boot and printed to kmsg.
However, this could sometimes be misleading and lead to users wasting a
lot of time on meaningless debugging for two reasons:
* Some bits are never cleared by hardware. It's the software's
responsibility to clear them as per the Processor Programming Reference
(see [1]).
* Some rare hardware-initiated platform resets do not update the
register at all.
In both cases, a previous reboot could leave its trace in the register,
resulting in users seeing unrelated reboot reasons while debugging random
reboots afterward.
Write the read value back to the register in order to clear all reason bits
since they are write-1-to-clear while the others must be preserved.
[1]: https://bugzilla.kernel.org/show_bug.cgi?id=206537#attach_303991
[ bp: Massage commit message. ]
Fixes: ab81310287 ("x86/CPU/AMD: Print the reason for the last reset")
Signed-off-by: Rong Zhang <i@rong.moe>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Reviewed-by: Yazen Ghannam <yazen.ghannam@amd.com>
Cc: <stable@kernel.org>
Link: https://lore.kernel.org/all/20250913144245.23237-1-i@rong.moe/
devm_kasprintf() may return NULL on memory allocation failure,
but the debug message prints cpus->dai_name before checking it.
Move the dev_dbg() call after the NULL check to prevent potential
NULL pointer dereference.
Fixes: cb8ea62e64 ("ASoC: amd/sdw_utils: add sof based soundwire generic machine driver")
Signed-off-by: Li Qiang <liqiang01@kylinos.cn>
Link: https://patch.msgid.link/20251015075530.146851-1-liqiang01@kylinos.cn
Signed-off-by: Mark Brown <broonie@kernel.org>
The widgets DMIC3_ENA and DMIC4_ENA must be defined in the DAPM
suppy widget, just like DMICL_ENA and DMICR_ENA. Whenever they
are turned on or off, the required startup or shutdown sequences
must be taken care by the max98090_shdn_event.
Signed-off-by: Sharique Mohammad <sharq0406@gmail.com>
Link: https://patch.msgid.link/20251015134215.750001-1-sharq0406@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Add compatible string fsl,imx-audio-tlv320 to fix below CHECK_DTBS warning:
arch/arm/boot/dts/nxp/imx/imx6dl-gw5903.dtb: /sound: failed to match any schema with compatible: ['fsl,imx-audio-tlv320']
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20251010160321.2130093-1-Frank.Li@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Merge series from Haibo Chen <haibo.chen@nxp.com>:
PATCH 1: different operations maybe require different max frequency, so
add flexspi to handle such case, re-config the clock rate when
new coming operation require new clock frequency.
Patch 2: add workaround for erratum ERR050272. Since only add 4us dealy
in nxp_fspi_dll_calibration(), so do not distinguish different
platforms.
Patch 3: add max frequency limitation for different sample clock source
selection. Datasheet give max 66MHz for mode 0 and 166MHz for
mode 3. And IC suggest to add this limitation on all SoCs for
safety and stability.
The kernel-doc for struct drm_gpuvm_map_req.map was added as '@op_map'
instead of '@map', leading to this warning during htmldocs build:
WARNING: include/drm/drm_gpuvm.h:1083 struct member 'map' not described in 'drm_gpuvm_map_req'
Fixes: 000a45dce7 ("drm/gpuvm: Pass map arguments through a struct")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Closes: https://lore.kernel.org/all/20250821133539.03aa298e@canb.auug.org.au/
Signed-off-by: Ankan Biswas <spyjetfayed@gmail.com>
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
We should wait for the rdma_cm to become SMBDIRECT_SOCKET_DISCONNECTED,
it turns out that (at least running some xfstests e.g. cifs/001)
often triggers the case where wait_event_interruptible() returns
with -ERESTARTSYS instead of waiting for SMBDIRECT_SOCKET_DISCONNECTED
to be reached.
Or we are already in SMBDIRECT_SOCKET_DISCONNECTING and never wait
for SMBDIRECT_SOCKET_DISCONNECTED.
Fixes: 050b8c3740 ("smbd: Make upper layer decide when to destroy the transport")
Fixes: e8b3bfe9bc ("cifs: smbd: Don't destroy transport on RDMA disconnect")
Fixes: b0aa92a229 ("smb: client: make sure smbd_disconnect_rdma_work() doesn't run after smbd_destroy() took over")
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
The device returns a valid bit in the LSB of the low timestamp byte in
the completion descriptor that the driver should check before
setting the SKB's hardware timestamp. If the timestamp is not valid, do not
hardware timestamp the SKB.
Cc: stable@vger.kernel.org
Fixes: b2c7aeb490 ("gve: Implement ndo_hwtstamp_get/set for RX timestamping")
Reviewed-by: Joshua Washington <joshwash@google.com>
Signed-off-by: Tim Hostetler <thostet@google.com>
Signed-off-by: Harshitha Ramamurthy <hramamurthy@google.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Link: https://patch.msgid.link/20251014004740.2775957-1-hramamurthy@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add a simple test for the corner case not currently covered by the
sticky fingers quirk. Because it's a corner case test, we only test this
on a couple of devices, not on all of them because the value of adding
the same test over and over is rather moot.
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
The sticky fingers quirk (MT_QUIRK_STICKY_FINGERS) was only considering
the case when slots were not released during the last report.
This can be problematic if the firmware forgets to release a finger
while others are still present.
This was observed on the Synaptics DLL0945 touchpad found on the Dell
XPS 9310 and the Dell Inspiron 5406.
Fixes: 4f4001bc76 ("HID: multitouch: fix rare Win 8 cases when the touch up event gets missing")
Cc: stable@vger.kernel.org
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
HID_DG_PEN devices should have a suffix of "Stylus", as pointed out by
commit c0ee1d5716 ("HID: hid-input: Add suffix also for HID_DG_PEN").
However, on multitouch devices, these suffixes may be overridden. Before
that commit, HID_DG_PEN devices would get the "Stylus" suffix, but after
that, multitouch would override them to have an "UNKNOWN" suffix. Just add
HID_DG_PEN to the list of non-overriden suffixes in multitouch.
Before this fix:
[ 0.470981] input: ELAN9008:00 04F3:2E14 UNKNOWN as /devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-16/i2c-ELAN9008:00/0018:04F3:2E14.0001/input/input8
ELAN9008:00 04F3:2E14 UNKNOWN
After this fix:
[ 0.474332] input: ELAN9008:00 04F3:2E14 Stylus as /devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-16/i2c-ELAN9008:00/0018:04F3:2E14.0001/input/input8
ELAN9008:00 04F3:2E14 Stylus
Fixes: c0ee1d5716 ("HID: hid-input: Add suffix also for HID_DG_PEN")
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@igalia.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Commit 581c448476 ("HID: input: map digitizer battery usage") added
handling of battery events for digitizers (typically for batteries
presented in stylii). Digitizers typically report correct battery levels
only when stylus is actively touching the surface, and in other cases
they may report battery level of 0. To avoid confusing consumers of the
battery information the code was added to filer out reports with 0
battery levels.
However there exist other kinds of devices that may legitimately report
0 battery levels. Fix this by filtering out 0-level reports only for
digitizer usages, and continue reporting them for other kinds of devices
(Smart Batteries, etc).
Reported-by: 卢国宏 <luguohong@xiaomi.com>
Fixes: 581c448476 ("HID: input: map digitizer battery usage")
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Convert test_cpu to use the newly added values_close_report() helper
to print detailed diagnostics when a tolerance check fails. This
provides clearer insight into deviations while run in the CI.
Signed-off-by: Sebastian Chlad <sebastian.chlad@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Some cgroup selftests, such as test_cpu, occasionally fail by a very
small margin and if run in the CI context, it is useful to have detailed
diagnostic output to understand the deviation.
Introduce a values_close_report() helper which performs the same
comparison as values_close(), but prints detailed information when the
values differ beyond the allowed tolerance.
Signed-off-by: Sebastian Chlad <sebastian.chlad@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Inspired by commit c065b6046b ("Use CONFIG_EXT4_FS instead of
CONFIG_EXT3_FS in all of the defconfigs") I looked around for any other
left-over EXT3 config options, and found some old defconfig files still
mentioned CONFIG_EXT3_DEFAULTS_TO_ORDERED.
That config option was removed a decade ago in commit c290ea01ab ("fs:
Remove ext3 filesystem driver"). It had a good run, but let's remove it
for good.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Fix regression caused by removing CONFIG_EXT3_FS when testing some
very old defconfigs
* Avoid a BUG_ON when opening a file on a maliciously corrupted file system
* Avoid mm warnings when freeing a very large orphan file metadata
* Avoid a theoretical races between metadata wrtteback and checkpoints.
(It's very hard to hit in practice, since the race requires that the
writeback take a very long time.)
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Merge tag 'ext4_for_linus-6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 bug fixes from Ted Ts'o:
- Fix regression caused by removing CONFIG_EXT3_FS when testing some
very old defconfigs
- Avoid a BUG_ON when opening a file on a maliciously corrupted file
system
- Avoid mm warnings when freeing a very large orphan file metadata
- Avoid a theoretical races between metadata writeback and checkpoints
(it's very hard to hit in practice, since the race requires that the
writeback take a very long time)
* tag 'ext4_for_linus-6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
Use CONFIG_EXT4_FS instead of CONFIG_EXT3_FS in all of the defconfigs
ext4: free orphan info with kvfree
ext4: detect invalid INLINE_DATA + EXTENTS flag combination
ext4, doc: fix and improve directory hash tree description
ext4: wait for ongoing I/O to complete before freeing blocks
jbd2: ensure that all ongoing I/O complete before freeing blocks
The era of hand-rolled HIWORD_UPDATE macros is over, at least for those
drivers that use constant masks.
Like many other Rockchip drivers, rockchip-dfi brings with it its own
HIWORD_UPDATE macro. This variant doesn't shift the value (and like the
others, doesn't do any checking).
Remove it, and replace instances of it with hw_bitfield.h's
FIELD_PREP_WM16. Since FIELD_PREP_WM16 requires contiguous masks and
shifts the value for us, some reshuffling of definitions needs to
happen.
This gives us better compile-time error checking, and in my opinion,
nicer code.
Tested on an RK3568 ODROID-M1 board (LPDDR4X at 1560 MHz, an RK3588
Radxa ROCK 5B board (LPDDR4X at 2112 MHz) and an RK3588 Radxa ROCK 5T
board (LPDDR5 at 2400 MHz). perf measurements were consistent with the
measurements of stress-ng --stream in all cases.
Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com>
Signed-off-by: Yury Norov (NVIDIA) <yury.norov@gmail.com>
The SCMI_XFER_FLAG_IS_RAW flag was being cleared prematurely in
scmi_xfer_raw_put() before the transfer completion was properly
acknowledged by the raw message handlers.
Move the clearing of SCMI_XFER_FLAG_IS_RAW and SCMI_XFER_FLAG_CHAN_SET
from scmi_xfer_raw_put() to __scmi_xfer_put() to ensure the flags remain
set throughout the entire raw message processing pipeline until the
transfer is returned to the free pool.
Fixes: 3095a3e25d ("firmware: arm_scmi: Add xfer helpers to provide raw access")
Suggested-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Artem Shimko <a.shimko.dev@gmail.com>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Message-Id: <20251008091057.1969260-1-a.shimko.dev@gmail.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
