Starting with Rust 1.91.0 (released 2025-10-30), in upstream commit
ab91a63d403b ("Ignore intrinsic calls in cross-crate-inlining cost model")
[1][2], `bindings.o` stops containing DWARF debug information because the
`Default` implementations contained `write_bytes()` calls which are now
ignored in that cost model (note that `CLIPPY=1` does not reproduce it).
This means `gendwarfksyms` complains:
RUSTC L rust/bindings.o
error: gendwarfksyms: process_module: dwarf_get_units failed: no debugging information?
There are several alternatives that would work here: conditionally
skipping in the cases needed (but that is subtle and brittle), forcing
DWARF generation with e.g. a dummy `static` (ugly and we may need to
do it in several crates), skipping the call to the tool in the Kbuild
command when there are no exports (fine) or teaching the tool to do so
itself (simple and clean).
Thus do the last one: don't attempt to process files if we have no symbol
versions to calculate.
[ I used the commit log of my patch linked below since it explained the
root issue and expanded it a bit more to summarize the alternatives.
- Miguel ]
Cc: stable@vger.kernel.org # Needed in 6.17.y.
Reported-by: Haiyue Wang <haiyuewa@163.com>
Closes: https://lore.kernel.org/rust-for-linux/b8c1c73d-bf8b-4bf2-beb1-84ffdcd60547@163.com/
Suggested-by: Miguel Ojeda <ojeda@kernel.org>
Link: https://lore.kernel.org/rust-for-linux/CANiq72nKC5r24VHAp9oUPR1HVPqT+=0ab9N0w6GqTF-kJOeiSw@mail.gmail.com/
Link: ab91a63d40 [1]
Link: https://github.com/rust-lang/rust/pull/145910 [2]
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Tested-by: Haiyue Wang <haiyuewa@163.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20251110131913.1789896-1-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
- Avoid sleeping in atomic context when changing linear map permissions
for DEBUG_PAGEALLOC or KFENCE.
- Rework printing of Spectre mitigation status to avoid hardlockup when
enabling per-task mitigations on the context-switch path.
- Reject kernel modules when instruction patching fails either due to
the DWARF-based SCS patching or because of an alternatives callback
residing outside of the core kernel text.
- Propagate error when updating kernel memory permissions in kprobes.
- Drop pointless, incorrect message when enabling the ACPI SPCR console.
- Use value-returning LSE instructions for per-cpu atomics to reduce
latency in SRCU locking routines.
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"There's more here than I would ideally like at this stage, but there's
been a steady trickle of fixes and some of them took a few rounds of
review.
The bulk of the changes are fixing some fallout from the recent BBM
level two support which allows the linear map to be split from block
to page mappings at runtime, but inadvertently led to sleeping in
atomic context on some paths where the linear map was already mapped
with page granularity. The fix is simply to avoid splitting in those
cases but the implementation of that is a little involved.
The other interesting fix is addressing a catastophic performance
issue with our per-cpu atomics discovered by Paul in the SRCU locking
code but which took some interactions with the hardware folks to
resolve.
Summary:
- Avoid sleeping in atomic context when changing linear map
permissions for DEBUG_PAGEALLOC or KFENCE
- Rework printing of Spectre mitigation status to avoid hardlockup
when enabling per-task mitigations on the context-switch path
- Reject kernel modules when instruction patching fails either due to
the DWARF-based SCS patching or because of an alternatives callback
residing outside of the core kernel text
- Propagate error when updating kernel memory permissions in kprobes
- Drop pointless, incorrect message when enabling the ACPI SPCR
console
- Use value-returning LSE instructions for per-cpu atomics to reduce
latency in SRCU locking routines"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: Reject modules with internal alternative callbacks
arm64: Fail module loading if dynamic SCS patching fails
arm64: proton-pack: Fix hard lockup due to print in scheduler context
arm64: proton-pack: Drop print when !CONFIG_MITIGATE_SPECTRE_BRANCH_HISTORY
arm64: mm: Tidy up force_pte_mapping()
arm64: mm: Optimize range_split_to_ptes()
arm64: mm: Don't sleep in split_kernel_leaf_mapping() when in atomic context
arm64: kprobes: check the return value of set_memory_rox()
arm64: acpi: Drop message logging SPCR default console
Revert "ACPI: Suppress misleading SPCR console message when SPCR table is absent"
arm64: Use load LSE atomics for the non-return per-CPU atomic operations
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Merge tag 'for-6.18-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
- fix new inode name tracking in tree-log
- fix conventional zone and stripe calculations in zoned mode
- fix bio reference counts on error paths in relocation and scrub
* tag 'for-6.18-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: release root after error in data_reloc_print_warning_inode()
btrfs: scrub: put bio after errors in scrub_raid56_parity_stripe()
btrfs: do not update last_log_commit when logging inode due to a new name
btrfs: zoned: fix stripe width calculation
btrfs: zoned: fix conventional zone capacity calculation
- a three patch series from Pasha Tatashin which addresses some Kexec
Handover issues
- a two patch series from Kiryl Shutsemau which fixes handling of large
folios which are mapped outside i_size
- a two patch series from Quanmin Yan which fixes some DAMON time issues
on 32-bit machines
Plus the usual shower of singletome.
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Merge tag 'mm-hotfixes-stable-2025-11-10-19-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc fixes from Andrew Morton:
"26 hotfixes. 22(!) are cc:stable, 22 are MM.
- address some Kexec Handover issues (Pasha Tatashin)
- fix handling of large folios which are mapped outside i_size (Kiryl
Shutsemau)
- fix some DAMON time issues on 32-bit machines (Quanmin Yan)
Plus the usual shower of singletons"
* tag 'mm-hotfixes-stable-2025-11-10-19-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (26 commits)
kho: warn and exit when unpreserved page wasn't preserved
kho: fix unpreservation of higher-order vmalloc preservations
kho: fix out-of-bounds access of vmalloc chunk
MAINTAINERS: add Chris and Kairui as the swap maintainer
mm/secretmem: fix use-after-free race in fault handler
mm/huge_memory: initialise the tags of the huge zero folio
nilfs2: avoid having an active sc_timer before freeing sci
scripts/decode_stacktrace.sh: fix build ID and PC source parsing
mm/damon/sysfs: change next_update_jiffies to a global variable
mm/damon/stat: change last_refresh_jiffies to a global variable
maple_tree: fix tracepoint string pointers
codetag: debug: handle existing CODETAG_EMPTY in mark_objexts_empty for slabobj_ext
mm/mremap: honour writable bit in mremap pte batching
gcov: add support for GCC 15
mm/mm_init: fix hash table order logging in alloc_large_system_hash()
mm/truncate: unmap large folio on split failure
mm/memory: do not populate page table entries beyond i_size
fs/proc: fix uaf in proc_readdir_de()
mm/huge_memory: preserve PG_has_hwpoisoned if a folio is split to >0 order
ksm: use range-walk function to jump over holes in scan_get_next_rmap_item
...
When smbd_disconnect_rdma_connection() turns SMBDIRECT_SOCKET_CREATED
into SMBDIRECT_SOCKET_ERROR, we'll have the situation that
smbd_disconnect_rdma_work() will set SMBDIRECT_SOCKET_DISCONNECTING
and call rdma_disconnect(), which likely fails as we never reached
the RDMA_CM_EVENT_ESTABLISHED. it means that
wait_event(sc->status_wait, sc->status == SMBDIRECT_SOCKET_DISCONNECTED)
in smbd_destroy() will hang forever in SMBDIRECT_SOCKET_DISCONNECTING
never reaching SMBDIRECT_SOCKET_DISCONNECTED.
So we directly go from SMBDIRECT_SOCKET_CREATED to
SMBDIRECT_SOCKET_DISCONNECTED.
Fixes: ffbfc73e84 ("smb: client: let smbd_disconnect_rdma_connection() set SMBDIRECT_SOCKET_ERROR...")
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>
In snd_usb_create_streams(), for UAC version 3 devices, the Interface
Association Descriptor (IAD) is retrieved via usb_ifnum_to_if(). If this
call fails, a fallback routine attempts to obtain the IAD from the next
interface and sets a BADD profile. However, snd_usb_mixer_controls_badd()
assumes that the IAD retrieved from usb_ifnum_to_if() is always valid,
without performing a NULL check. This can lead to a NULL pointer
dereference when usb_ifnum_to_if() fails to find the interface descriptor.
This patch adds a NULL pointer check after calling usb_ifnum_to_if() in
snd_usb_mixer_controls_badd() to prevent the dereference.
This issue was discovered by syzkaller, which triggered the bug by sending
a crafted USB device descriptor.
Fixes: 17156f23e9 ("ALSA: usb: add UAC3 BADD profiles support")
Signed-off-by: Haein Lee <lhi0729@kaist.ac.kr>
Link: https://patch.msgid.link/vwhzmoba9j2f.vwhzmob9u9e2.g6@dooray.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
ciu clock is 2 times of io clock, but the sample clk used is
derived from io clock provided to the card. So we should use
io clock to calculate the phase.
Fixes: 59903441f5 ("mmc: dw_mmc-rockchip: Add internal phase support")
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This patch refactors pxamci_probe() to use devm-managed resource
allocation (e.g. devm_dma_request_chan) and dev_err_probe() for
improved readability and automatic cleanup on probe failure.
It also removes redundant NULL assignments and manual resource release
logic from pxamci_probe(), and eliminates the corresponding release
calls from pxamci_remove().
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/r/202510041841.pRlunIfl-lkp@intel.com/
Fixes: 58c40f3faf ("mmc: pxamci: Use devm_mmc_alloc_host() helper")
Suggested-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Signed-off-by: Rakuram Eswaran <rakuram.e96@gmail.com>
Reviewed-by: Khalid Aziz <khalid@kernel.org>
Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
memblock_estimated_nr_free_pages() returns the difference between the total
size of the "memory" memblock type and the "reserved" memblock type.
The "soft-reserved" memory regions are added to the "reserved" memblock
type, but not to the "memory" memblock type. Therefore,
memblock_estimated_nr_free_pages() may return a smaller value than
expected, or if it underflows, an extremely large value.
/proc/sys/kernel/threads-max is determined by the value of
memblock_estimated_nr_free_pages(). This issue was discovered on machines
with CXL memory because kernel.threads-max was either smaller than expected
or extremely large for the installed DRAM size.
This fixes the issue by replacing memblock_reserved_size() with
memblock_reserved_kern_size() that tells how much memory was
reserved from the actual RAM.
Suggested-by: Mike Rapoport <rppt@kernel.org>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Link: https://patch.msgid.link/20251111010010.7800-1-akinobu.mita@gmail.com
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Since the maximum return value of strnlen(..., CIFS_MAX_USERNAME_LEN)
is CIFS_MAX_USERNAME_LEN, length check in smb3_fs_context_parse_param()
is always FALSE and invalid.
Fix the comparison in if statement.
Signed-off-by: Yiqi Sun <sunyiqixm@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
When smb_direct_disconnect_rdma_connection() turns SMBDIRECT_SOCKET_CREATED
into SMBDIRECT_SOCKET_ERROR, we'll have the situation that
smb_direct_disconnect_rdma_work() will set SMBDIRECT_SOCKET_DISCONNECTING
and call rdma_disconnect(), which likely fails as we never reached
the RDMA_CM_EVENT_ESTABLISHED. it means that
wait_event(sc->status_wait, sc->status == SMBDIRECT_SOCKET_DISCONNECTED)
in free_transport() will hang forever in SMBDIRECT_SOCKET_DISCONNECTING
never reaching SMBDIRECT_SOCKET_DISCONNECTED.
So we directly go from SMBDIRECT_SOCKET_CREATED to
SMBDIRECT_SOCKET_DISCONNECTED.
Fixes: b3fd52a0d8 ("smb: server: let smb_direct_disconnect_rdma_connection() set SMBDIRECT_SOCKET_ERROR...")
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Currently, CQs without a completion function are assigned the
mlx5_add_cq_to_tasklet function by default. This is problematic since
only user CQs created through the mlx5_ib driver are intended to use
this function.
Additionally, all CQs that will use doorbells instead of polling for
completions must call mlx5_cq_arm. However, the default CQ creation flow
leaves a valid value in the CQ's arm_db field, allowing FW to send
interrupts to polling-only CQs in certain corner cases.
These two factors would allow a polling-only kernel CQ to be triggered
by an EQ interrupt and call a completion function intended only for user
CQs, causing a null pointer exception.
Some areas in the driver have prevented this issue with one-off fixes
but did not address the root cause.
This patch fixes the described issue by adding defaults to the create CQ
flow. It adds a default dummy completion function to protect against
null pointer exceptions, and it sets an invalid command sequence number
by default in kernel CQs to prevent the FW from sending an interrupt to
the CQ until it is armed. User CQs are responsible for their own
initialization values.
Callers of mlx5_core_create_cq are responsible for changing the
completion function and arming the CQ per their needs.
Fixes: cdd04f4d4d ("net/mlx5: Add support to create SQ and CQ for ASO")
Signed-off-by: Akiva Goldberger <agoldberger@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Acked-by: Leon Romanovsky <leon@kernel.org>
Link: https://patch.msgid.link/1762681743-1084694-1-git-send-email-tariqt@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
For chips with security enabled, it's only possible to load firmware
with a valid signature pattern.
If key_id is not zero, it indicates a security chip, and the driver will
not load the config file.
- Example log for a security chip.
Bluetooth: hci0: RTL: examining hci_ver=0c hci_rev=000a
lmp_ver=0c lmp_subver=8922
Bluetooth: hci0: RTL: rom_version status=0 version=1
Bluetooth: hci0: RTL: btrtl_initialize: key id 1
Bluetooth: hci0: RTL: loading rtl_bt/rtl8922au_fw.bin
Bluetooth: hci0: RTL: cfg_sz 0, total sz 71301
Bluetooth: hci0: RTL: fw version 0x41c0c905
- Example log for a normal chip.
Bluetooth: hci0: RTL: examining hci_ver=0c hci_rev=000a
lmp_ver=0c lmp_subver=8922
Bluetooth: hci0: RTL: rom_version status=0 version=1
Bluetooth: hci0: RTL: btrtl_initialize: key id 0
Bluetooth: hci0: RTL: loading rtl_bt/rtl8922au_fw.bin
Bluetooth: hci0: RTL: loading rtl_bt/rtl8922au_config.bin
Bluetooth: hci0: RTL: cfg_sz 6, total sz 71307
Bluetooth: hci0: RTL: fw version 0x41c0c905
Tested-by: Hilda Wu <hildawu@realtek.com>
Signed-off-by: Nial Ni <niall_ni@realsil.com.cn>
Signed-off-by: Max Chou <max.chou@realtek.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Change the debug message to print the correct units instead of always
assuming Gbps, as the value can be in either 100 Mbps or 1 Gbps units.
Fixes: 5da8bc3eff ("net/mlx5e: DCBNL, Add debug messages log")
Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Nimrod Oren <noren@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/1762681073-1084058-6-git-send-email-tariqt@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
The previous calculation used roundup() which caused an overflow for
rates between 25.5Gbps and 26Gbps.
For example, a rate of 25.6Gbps would result in using 100Mbps units with
value of 256, which would overflow the 8 bits field.
Simplify the upper_limit_mbps calculation by removing the
unnecessary roundup, and adjust the comparison to use <= to correctly
handle the boundary condition.
Fixes: d8880795da ("net/mlx5e: Implement DCBNL IEEE max rate")
Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Nimrod Oren <noren@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/1762681073-1084058-4-git-send-email-tariqt@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
When trying to set num_doorbells to a value greater than the max number
of channels, the error message was going over the netlink limit of 80
chars, truncating the most important part of the message, the number of
channels.
Fix that by trimming the length a bit.
Fixes: 11bbcfb766 ("net/mlx5e: Use the 'num_doorbells' devlink param")
Signed-off-by: Cosmin Ratiu <cratiu@nvidia.com>
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/1762681073-1084058-3-git-send-email-tariqt@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Fix a KMSAN kernel-infoleak detected by the syzbot .
[net?] KMSAN: kernel-infoleak in __skb_datagram_iter
In tcf_ife_dump(), the variable 'opt' was partially initialized using a
designatied initializer. While the padding bytes are reamined
uninitialized. nla_put() copies the entire structure into a
netlink message, these uninitialized bytes leaked to userspace.
Initialize the structure with memset before assigning its fields
to ensure all members and padding are cleared prior to beign copied.
This change silences the KMSAN report and prevents potential information
leaks from the kernel memory.
This fix has been tested and validated by syzbot. This patch closes the
bug reported at the following syzkaller link and ensures no infoleak.
Reported-by: syzbot+0c85cae3350b7d486aee@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=0c85cae3350b7d486aee
Tested-by: syzbot+0c85cae3350b7d486aee@syzkaller.appspotmail.com
Fixes: ef6980b6be ("introduce IFE action")
Signed-off-by: Ranganath V N <vnranganath.20@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20251109091336.9277-3-vnranganath.20@gmail.com
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
The current single-bit error injection mechanism flips bits directly in ECC RAM
by performing write and read operations. When the ECC RAM is actively used by
the Ethernet or USB controller, this approach sometimes trigger a false
double-bit error.
Switch both Ethernet and USB EDAC devices to use the INTTEST register
(altr_edac_a10_device_inject_fops) for single-bit error injection, similar to
the existing double-bit error injection method.
Fixes: 064acbd4f4 ("EDAC, altera: Add Stratix10 peripheral support")
Signed-off-by: Niravkumar L Rabara <niravkumarlaxmidas.rabara@altera.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Acked-by: Dinh Nguyen <dinguyen@kernel.org>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20251111081333.1279635-1-niravkumarlaxmidas.rabara@altera.com
This handles PA Sync Lost event which previously was assumed to be
handled with BIG Sync Lost but their lifetime are not the same thus why
there are 2 different events to inform when each sync is lost.
Fixes: b2a5f2e1c1 ("Bluetooth: hci_event: Add support for handling LE BIG Sync Lost event")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
The OCRAM ECC is always enabled either by the BootROM or by the Secure Device
Manager (SDM) during a power-on reset on SoCFPGA.
However, during a warm reset, the OCRAM content is retained to preserve data,
while the control and status registers are reset to their default values. As
a result, ECC must be explicitly re-enabled after a warm reset.
Fixes: 17e47dc6db ("EDAC/altera: Add Stratix10 OCRAM ECC support")
Signed-off-by: Niravkumar L Rabara <niravkumarlaxmidas.rabara@altera.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Acked-by: Dinh Nguyen <dinguyen@kernel.org>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20251111080801.1279401-1-niravkumarlaxmidas.rabara@altera.com
Quang Le reported that the AF_UNIX GC could garbage-collect a
receive queue of an alive in-flight socket, with a nice repro.
The repro consists of three stages.
1)
1-a. Create a single cyclic reference with many sockets
1-b. close() all sockets
1-c. Trigger GC
2)
2-a. Pass sk-A to an embryo sk-B
2-b. Pass sk-X to sk-X
2-c. Trigger GC
3)
3-a. accept() the embryo sk-B
3-b. Pass sk-B to sk-C
3-c. close() the in-flight sk-A
3-d. Trigger GC
As of 2-c, sk-A and sk-X are linked to unix_unvisited_vertices,
and unix_walk_scc() groups them into two different SCCs:
unix_sk(sk-A)->vertex->scc_index = 2 (UNIX_VERTEX_INDEX_START)
unix_sk(sk-X)->vertex->scc_index = 3
Once GC completes, unix_graph_grouped is set to true.
Also, unix_graph_maybe_cyclic is set to true due to sk-X's
cyclic self-reference, which makes close() trigger GC.
At 3-b, unix_add_edge() allocates unix_sk(sk-B)->vertex and
links it to unix_unvisited_vertices.
unix_update_graph() is called at 3-a. and 3-b., but neither
unix_graph_grouped nor unix_graph_maybe_cyclic is changed
because both sk-B's listener and sk-C are not in-flight.
3-c decrements sk-A's file refcnt to 1.
Since unix_graph_grouped is true at 3-d, unix_walk_scc_fast()
is finally called and iterates 3 sockets sk-A, sk-B, and sk-X:
sk-A -> sk-B (-> sk-C)
sk-X -> sk-X
This is totally fine. All of them are not yet close()d and
should be grouped into different SCCs.
However, unix_vertex_dead() misjudges that sk-A and sk-B are
in the same SCC and sk-A is dead.
unix_sk(sk-A)->scc_index == unix_sk(sk-B)->scc_index <-- Wrong!
&&
sk-A's file refcnt == unix_sk(sk-A)->vertex->out_degree
^-- 1 in-flight count for sk-B
-> sk-A is dead !?
The problem is that unix_add_edge() does not initialise scc_index.
Stage 1) is used for heap spraying, making a newly allocated
vertex have vertex->scc_index == 2 (UNIX_VERTEX_INDEX_START)
set by unix_walk_scc() at 1-c.
Let's track the max SCC index from the previous unix_walk_scc()
call and assign the max + 1 to a new vertex's scc_index.
This way, we can continue to avoid Tarjan's algorithm while
preventing misjudgments.
Fixes: ad081928a8 ("af_unix: Avoid Tarjan's algorithm if unnecessary.")
Reported-by: Quang Le <quanglex97@gmail.com>
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20251109025233.3659187-1-kuniyu@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Owing to the ID registers being global to the VM, there is no point
in computing them more than once. However, recent changes making
use of kvm_set_vm_id_reg() outlined that we repeatedly hammer
the ID registers when we shouldn't.
Gate the ID reg update on the VM having never run.
Fixes: 50e7cce81b ("KVM: arm64: Limit clearing of ID_{AA64PFR0,PFR1}_EL1.GIC to userspace irqchip")
Fixes: 5cb57a1aff ("KVM: arm64: Zero ID_AA64PFR0_EL1.GIC when no GICv3 is presented to the guest")
Closes: https://lore.kernel.org/r/aRHf6x5umkTYhYJ3@finisterre.sirena.org.uk
Reported-by: Mark Brown <broonie@kernel.org>
Tested-by: Mark Brown <broonie@kernel.org>
Link: https://patch.msgid.link/20251110173010.1918424-1-maz@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
In fact, it is a multi-threaded MIPS34Kc, not a single-threaded MIPS24Kc.
Fixes: 0ec4887009 ("mips: dts: Add EcoNet DTS with EN751221 and SmartFiber XP8421-B board")
Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Fix a regression that has caused accesses to the PCI MMIO window to
complete unclaimed in non-EVA configurations with the SOC-it family of
system controllers, preventing PCI devices from working that use MMIO.
In the non-EVA case PHYS_OFFSET is set to 0, meaning that PCI_BAR0 is
set with an empty mask (and PCI_HEAD4 matches addresses starting from 0
accordingly). Consequently all addresses are matched for incoming DMA
accesses from PCI. This seems to confuse the system controller's logic
and outgoing bus cycles targeting the PCI MMIO window seem not to make
it to the intended devices.
This happens as well when a wider mask is used with PCI_BAR0, such as
0x80000000 or 0xe0000000, that makes addresses match that overlap with
the PCI MMIO window, which starts at 0x10000000 in our configuration.
Set the mask in PCI_BAR0 to 0xf0000000 for non-EVA then, covering the
non-EVA maximum 256 MiB of RAM, which is what YAMON does and which used
to work correctly up to the offending commit. Set PCI_P2SCMSKL to match
PCI_BAR0 as required by the system controller's specification, and match
PCI_P2SCMAPL to PCI_HEAD4 for identity mapping.
Verified with:
Core board type/revision = 0x0d (Core74K) / 0x01
System controller/revision = MIPS SOC-it 101 OCP / 1.3 SDR-FW-4:1
Processor Company ID/options = 0x01 (MIPS Technologies, Inc.) / 0x1c
Processor ID/revision = 0x97 (MIPS 74Kf) / 0x4c
for non-EVA and with:
Core board type/revision = 0x0c (CoreFPGA-5) / 0x00
System controller/revision = MIPS ROC-it2 / 0.0 FW-1:1 (CLK_unknown) GIC
Processor Company ID/options = 0x01 (MIPS Technologies, Inc.) / 0x00
Processor ID/revision = 0xa0 (MIPS interAptiv UP) / 0x20
for EVA/non-EVA, fixing:
defxx 0000:00:12.0: assign IRQ: got 10
defxx: v1.12 2021/03/10 Lawrence V. Stefani and others
0000:00:12.0: Could not read adapter factory MAC address!
vs:
defxx 0000:00:12.0: assign IRQ: got 10
defxx: v1.12 2021/03/10 Lawrence V. Stefani and others
0000:00:12.0: DEFPA at MMIO addr = 0x10142000, IRQ = 10, Hardware addr = 00-00-f8-xx-xx-xx
0000:00:12.0: registered as fddi0
for non-EVA and causing no change for EVA.
Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Fixes: 422dd25664 ("MIPS: Malta: Allow PCI devices DMA to lower 2GB physical")
Cc: stable@vger.kernel.org # v4.9+
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Some Marvell AP firmware used with mwl8k misbehaves when beacon frames
do not contain a WLAN_EID_DS_PARAMS element with the current channel.
It was reported on OpenWrt Github issues [0].
When hostapd/mac80211 omits DSSS Parameter Set from the beacon (which is
valid on some bands), the firmware stops transmitting sane frames and RX
status starts reporting bogus channel information. This makes AP mode
unusable.
Newer Marvell drivers (mwlwifi [1]) hard-code DSSS Parameter Set into
AP beacons for all chips, which suggests this is a firmware requirement
rather than a mwl8k-specific quirk.
Mirror that behaviour in mwl8k: when setting the beacon, check if
WLAN_EID_DS_PARAMS is present, and if not, extend the beacon and inject
a DSSS Parameter Set element, using the current channel from
hw->conf.chandef.chan.
Tested on Linksys EA4500 (88W8366).
[0] https://github.com/openwrt/openwrt/issues/19088
[1] db97edf20f/hif/fwcmd.c (L675)
Fixes: b64fe619e3 ("mwl8k: basic AP interface support")
Tested-by: Antony Kolitsos <zeusomighty@hotmail.com>
Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
Link: https://patch.msgid.link/20251111100733.2825970-3-paweldembicki@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The i.MX6UL reference manual lists two possible interrupt lines for
SAI3 (56 and 57, offset +32). The current device tree entry uses
the first one (24), which prevents IRQs from being handled properly.
Use the second interrupt line (25), which does allow interrupts
to work as expected.
Fixes: 36e2edf6ac ("ARM: dts: imx6ul: add sai support")
Signed-off-by: Maarten Zanders <maarten@zanders.be>
Cc: stable@vger.kernel.org
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
If for example the sniffer did not follow any AIDs in an MU frame, then
some of the information may not be filled in or is even expected to be
invalid. As an example, in that case it is expected that Nss is zero.
Fixes: 2ff5e52e78 ("radiotap: add 0-length PSDU "not captured" type")
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20251110142554.83a2858ee15b.I9f78ce7984872f474722f9278691ae16378f0a3e@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Fix an ath11k transmit status reporting issue. This issue has always
been present, but not reported until recently.
Bringing this through the current release since there is now a
userspace entity that wants to leverage this.
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Merge tag 'ath-current-20251110' of git://git.kernel.org/pub/scm/linux/kernel/git/ath/ath
Jeff Johnson says:
==================
ath.git update for v6.18-rc6
Fix an ath11k transmit status reporting issue. This issue has always
been present, but not reported until recently.
Bringing this through the current release since there is now a
userspace entity that wants to leverage this.
==================
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Swap interrupt numbers of eqos because the below commit just swap
interrupt-names and missed swap interrupts also.
The driver (drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c) use
interrupt-names to get irq numbers.
Fixes: f29c19a6e4 ("arm64: dts: imx8dxl-ss-conn: Fix Ethernet interrupt-names order")
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Tested-by: Alexander Dahl <ada@thorsis.com>
Cc: stable@vger.kernel.org
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Breno Leitao says:
====================
net: netpoll: fix memory leak and add comprehensive selftests
Fix a memory leak in netpoll and introduce netconsole selftests that
expose the issue when running with kmemleak detection enabled.
This patchset includes a selftest for netpoll with multiple concurrent
users (netconsole + bonding), which simulates the scenario from test[1]
that originally demonstrated the issue allegedly fixed by commit
efa95b01da ("netpoll: fix use after free") - a commit that is now
being reverted.
Sending this to "net" branch because this is a fix, and the selftest
might help with the backports validation.
Link: https://lore.kernel.org/lkml/96b940137a50e5c387687bb4f57de8b0435a653f.1404857349.git.decot@googlers.com/ [1]
====================
Link: https://patch.msgid.link/20251107-netconsole_torture-v10-0-749227b55f63@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This patch adds a selftest that verifies netconsole functionality
over bonded network interfaces using netdevsim. It sets up two bonded
interfaces acting as transmit (TX) and receive (RX) ends, placed in
separate network namespaces. The test sends kernel log messages and
verifies that they are properly received on the bonded RX interfaces
with both IPv4 and IPv6, and using basic and extended netconsole
formats.
This patchset aims to test a long-standing netpoll subsystem where
netpoll has multiple users. (in this case netconsole and bonding). A
similar selftest has been discussed in [1] and [2].
This test also tries to enable bonding and netpoll in different order,
just to guarantee that all the possibilities are exercised.
Link: https://lore.kernel.org/all/20250905-netconsole_torture-v3-0-875c7febd316@debian.org/ [1]
Link: https://lore.kernel.org/lkml/96b940137a50e5c387687bb4f57de8b0435a653f.1404857349.git.decot@googlers.com/ [2]
Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20251107-netconsole_torture-v10-4-749227b55f63@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Create a netconsole test that puts a lot of pressure on the netconsole
list manipulation. Do it by creating dynamic targets and deleting
targets while messages are being sent. Also put interface down while the
messages are being sent, as creating parallel targets.
The code launches three background jobs on distinct schedules:
* Toggle netcons target every 30 iterations
* create and delete random_target every 50 iterations
* toggle iface every 70 iterations
This creates multiple concurrency sources that interact with netconsole
states. This is good practice to simulate stress, and exercise netpoll
and netconsole locks.
This test already found an issue as reported in [1]
Link: https://lore.kernel.org/all/20250901-netpoll_memleak-v1-1-34a181977dfc@debian.org/ [1]
Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Andre Carvalho <asantostc@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20251107-netconsole_torture-v10-3-749227b55f63@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Extract the netconsole target creation from create_dynamic_target(), by
moving it from create_dynamic_target() into a new helper function. This
enables other tests to use the creation of netconsole targets with
arbitrary parameters and no sleep.
The new helper will be utilized by forthcoming torture-type selftests
that require dynamic target management.
Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20251107-netconsole_torture-v10-2-749227b55f63@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
commit efa95b01da ("netpoll: fix use after free") incorrectly
ignored the refcount and prematurely set dev->npinfo to NULL during
netpoll cleanup, leading to improper behavior and memory leaks.
Scenario causing lack of proper cleanup:
1) A netpoll is associated with a NIC (e.g., eth0) and netdev->npinfo is
allocated, and refcnt = 1
- Keep in mind that npinfo is shared among all netpoll instances. In
this case, there is just one.
2) Another netpoll is also associated with the same NIC and
npinfo->refcnt += 1.
- Now dev->npinfo->refcnt = 2;
- There is just one npinfo associated to the netdev.
3) When the first netpolls goes to clean up:
- The first cleanup succeeds and clears np->dev->npinfo, ignoring
refcnt.
- It basically calls `RCU_INIT_POINTER(np->dev->npinfo, NULL);`
- Set dev->npinfo = NULL, without proper cleanup
- No ->ndo_netpoll_cleanup() is either called
4) Now the second target tries to clean up
- The second cleanup fails because np->dev->npinfo is already NULL.
* In this case, ops->ndo_netpoll_cleanup() was never called, and
the skb pool is not cleaned as well (for the second netpoll
instance)
- This leaks npinfo and skbpool skbs, which is clearly reported by
kmemleak.
Revert commit efa95b01da ("netpoll: fix use after free") and adds
clarifying comments emphasizing that npinfo cleanup should only happen
once the refcount reaches zero, ensuring stable and correct netpoll
behavior.
Cc: <stable@vger.kernel.org> # 3.17.x
Cc: Jay Vosburgh <jv@jvosburgh.net>
Fixes: efa95b01da ("netpoll: fix use after free")
Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20251107-netconsole_torture-v10-1-749227b55f63@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Aksh Garg says:
====================
Fix IET verification implementation for CPSW driver
The CPSW module supports Intersperse Express Traffic (IET) and allows
the MAC layer to verify whether the peer supports IET through its MAC
merge sublayer, by sending a verification packet and waiting for its
response until the timeout. As defined in IEEE 802.3 Clause 99, the
verification process involves up to 3 verification attempts to
establish support.
This patch series fixes issues in the implementation of this IET
verification process.
====================
Link: https://patch.msgid.link/20251106092305.1437347-1-a-garg7@ti.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The am65_cpsw_iet_verify_wait() function attempts verification 20 times,
toggling the AM65_CPSW_PN_IET_MAC_LINKFAIL bit in each iteration. When
the LINKFAIL bit transitions from 1 to 0, the MAC merge layer initiates
the verification process and waits for the timeout configured in
MAC_VERIFY_CNT before automatically retransmitting. The MAC_VERIFY_CNT
register is configured according to the user-defined verify/response
timeout in am65_cpsw_iet_set_verify_timeout_count(). As per IEEE 802.3
Clause 99, the hardware performs this automatic retry up to 3 times.
Current implementation toggles LINKFAIL after the user-configured
verify/response timeout in each iteration, forcing the hardware to
restart verification instead of respecting the MAC_VERIFY_CNT timeout.
This bypasses the hardware's automatic retry mechanism.
Fix this by moving the LINKFAIL bit toggle outside the retry loop and
reducing the retry count from 20 to 3. The software now only monitors
the status register while the hardware autonomously handles the 3
verification attempts at proper MAC_VERIFY_CNT intervals.
Fixes: 49a2eb9068 ("net: ethernet: ti: am65-cpsw-qos: Add Frame Preemption MAC Merge support")
Signed-off-by: Aksh Garg <a-garg7@ti.com>
Link: https://patch.msgid.link/20251106092305.1437347-3-a-garg7@ti.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The CPSW module uses the MAC_VERIFY_CNT bit field in the
CPSW_PN_IET_VERIFY_REG_k register to set the verify/response timeout
count. This register specifies the number of clock cycles to wait before
resending a verify packet if the verification fails.
The verify/response timeout count, as being set by the function
am65_cpsw_iet_set_verify_timeout_count() is hardcoded for 125MHz
clock frequency, which varies based on PHY mode and link speed.
The respective clock frequencies are as follows:
- RGMII mode:
* 1000 Mbps: 125 MHz
* 100 Mbps: 25 MHz
* 10 Mbps: 2.5 MHz
- QSGMII/SGMII mode: 125 MHz (all speeds)
Fix this by adding logic to calculate the correct timeout counts
based on the actual PHY interface mode and link speed.
Fixes: 49a2eb9068 ("net: ethernet: ti: am65-cpsw-qos: Add Frame Preemption MAC Merge support")
Signed-off-by: Aksh Garg <a-garg7@ti.com>
Link: https://patch.msgid.link/20251106092305.1437347-2-a-garg7@ti.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In tls_handshake_accept(), a netlink message is allocated using
genlmsg_new(). In the error handling path, genlmsg_cancel() is called
to cancel the message construction, but the message itself is not freed.
This leads to a memory leak.
Fix this by calling nlmsg_free() in the error path after genlmsg_cancel()
to release the allocated memory.
Fixes: 2fd5532044 ("net/handshake: Add a kernel API for requesting a TLSv1.3 handshake")
Signed-off-by: Zilin Guan <zilin@seu.edu.cn>
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Link: https://patch.msgid.link/20251106144511.3859535-1-zilin@seu.edu.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The current CLC proposal message construction uses a mix of
`ini->smc_type_v1/v2` and `pclc_base->hdr.typev1/v2` to decide whether
to include optional extensions (IPv6 prefix extension for v1, and v2
extension). This leads to a critical inconsistency: when
`smc_clc_prfx_set()` fails - for example, in IPv6-only environments with
only link-local addresses, or when the local IP address and the outgoing
interface’s network address are not in the same subnet.
As a result, the proposal message is assembled using the stale
`ini->smc_type_v1` value—causing the IPv6 prefix extension to be
included even though the header indicates v1 is not supported.
The peer then receives a malformed CLC proposal where the header type
does not match the payload, and immediately resets the connection.
The fix ensures consistency between the CLC header flags and the actual
payload by synchronizing `ini->smc_type_v1` with `pclc_base->hdr.typev1`
when prefix setup fails.
Fixes: 8c3dca341a ("net/smc: build and send V2 CLC proposal")
Signed-off-by: D. Wythe <alibuda@linux.alibaba.com>
Reviewed-by: Alexandra Winter <wintera@linux.ibm.com>
Link: https://patch.msgid.link/20251107024029.88753-1-alibuda@linux.alibaba.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
netif_carrier_ok() doesn't check if the slave is up. Before the below
commit, netif_running() was also checked.
Fixes: 23a6037ce7 ("bonding: Remove support for use_carrier")
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Jay Vosburgh <jv@jvosburgh.net>
Link: https://patch.msgid.link/20251106180252.3974772-1-nicolas.dichtel@6wind.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When freeing indexed arrays, the corresponding free function should
be called for each entry of the indexed array. For example, for
for 'struct tc_act_attrs' 'tc_act_attrs_free(...)' needs to be called
for each entry.
Previously, memory leaks were reported when enabling the ASAN
analyzer.
=================================================================
==874==ERROR: LeakSanitizer: detected memory leaks
Direct leak of 24 byte(s) in 1 object(s) allocated from:
#0 0x7f221fd20cb5 in malloc ./debug/gcc/gcc/libsanitizer/asan/asan_malloc_linux.cpp:67
#1 0x55c98db048af in tc_act_attrs_set_options_vlan_parms ../generated/tc-user.h:2813
#2 0x55c98db048af in main ./linux/tools/net/ynl/samples/tc-filter-add.c:71
Direct leak of 24 byte(s) in 1 object(s) allocated from:
#0 0x7f221fd20cb5 in malloc ./debug/gcc/gcc/libsanitizer/asan/asan_malloc_linux.cpp:67
#1 0x55c98db04a93 in tc_act_attrs_set_options_vlan_parms ../generated/tc-user.h:2813
#2 0x55c98db04a93 in main ./linux/tools/net/ynl/samples/tc-filter-add.c:74
Direct leak of 10 byte(s) in 2 object(s) allocated from:
#0 0x7f221fd20cb5 in malloc ./debug/gcc/gcc/libsanitizer/asan/asan_malloc_linux.cpp:67
#1 0x55c98db0527d in tc_act_attrs_set_kind ../generated/tc-user.h:1622
SUMMARY: AddressSanitizer: 58 byte(s) leaked in 4 allocation(s).
The following diff illustrates the changes introduced compared to the
previous version of the code.
void tc_flower_attrs_free(struct tc_flower_attrs *obj)
{
+ unsigned int i;
+
free(obj->indev);
+ for (i = 0; i < obj->_count.act; i++)
+ tc_act_attrs_free(&obj->act[i]);
free(obj->act);
free(obj->key_eth_dst);
free(obj->key_eth_dst_mask);
Signed-off-by: Zahari Doychev <zahari.doychev@linux.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Link: https://patch.msgid.link/20251106151529.453026-3-zahari.doychev@linux.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
