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bcm_sf2_cfp_rule_get_all() walks the whole cfp.unique bitmap into
rule_locs[] without consulting nfc->rule_cnt, which is how many entries
the caller had room for. ETHTOOL_GRXCLSRLALL requires no CAP_NET_ADMIN
and the ioctl sizes the buffer from the rule_cnt userspace passes in, so
once an admin has installed CFP rules any user can ask for fewer slots
than there are rules and run off the end of the allocation. A rule_cnt
of 0 leaves the buffer pointer NULL and the walk dereferences it.
Fixes: 7318166cacad ("net: dsa: bcm_sf2: Add support for ethtool::rxnfc")
Reviewed-by: Jonas Gorski <jonas.gorski@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: Joe Damato <joe@dama.to>
Link: https://patch.msgid.link/20260903032611.3000029-2-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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In bond_do_alb_xmit() and rlb_arp_xmit(), make sure to unclone
skb head via skb_cow_head() before modifying the source MAC address
(Ethernet header and ARP payload) to avoid silent corruption if
the skb is shared or cloned. Avoid caching the header pointers
across skb_cow_head().
In rlb_arp_xmit(), only modify arp->mac_src if it differs from
tx_slave->dev->dev_addr to avoid an unnecessary copy and head
reallocation.
Also, we should not assume mac header is set in output path.
Use skb_eth_hdr() instead of eth_hdr() to fix the issue,
and remove now redundant skb_reset_mac_header() calls.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Hangbin Liu <liuhangbin@kylinos.cn>
Cc: Jay Vosburgh <jv@jvosburgh.net>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://patch.msgid.link/20260903143940.1180513-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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remove_nh_grp_entry() prints the extack message when a listener fails
to replace the reduced nexthop group. However, extack is not
initialized and listeners are not required to set a message when
returning an error. Neither netdevsim nor mlxsw do so when an
allocation fails, resulting in the dereference of an uninitialized
stack pointer.
Fix by zero-initializing extack, as was done in commit 6347c5314cee
("nexthop: initialize extack in nh_res_bucket_migrate()").
Fixes: 833a1065eeb1 ("nexthop: Emit a notification when a nexthop group is reduced")
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260903080259.10378-1-idosch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/wpan/wpan
Stefan Schmidt says:
====================
pull-request: ieee802154 for net 2026-09-03
Zhiling Zou fixed a NULL deref when coming from a TUN device.
Fan Wu fixed a UAF in the cc2520 driver.
Chenguang Zhao fixed up some out of date comments in 6lowpan.
David Carlier fixed a potential double free in the hwsim driver.
Ibrahim Hashimov reworked the queuing in the RX path to fix a UAF on beacon
and MAC frames.
* tag 'ieee802154-for-net-2026-09-03' of git://git.kernel.org/pub/scm/linux/kernel/git/wpan/wpan:
mac802154: fix use-after-free of sdata via queued RX frames
ieee802154: hwsim: serialize pib updates to fix double-free
ieee802154: 6lowpan: fix NULL dereference in lowpan_newlink
ieee802154: cc2520: fix FIFOP work use-after-free
net: 6lowpan: fix mismatched comments
====================
Link: https://patch.msgid.link/20260903093012.4032586-1-stefan@datenfreihafen.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Pull drm fixes from Dave Airlie:
"Lots of scattered fixes: nouveau has a bunch of display fixes for
blackwell GPUs that should mean we light up monitors properly and fix
some desktop rendering problems, amdgpu and intel display changes as
usual.
There also changes to the core pagemap, then the usual amouny of AI
inspired validation fixes.
core:
- Fix drm_crtc_commit leak when PAGE_FLIP_EVENT is used
dma-buf:
- Publish the dma-buf only after copy_to_user succeeds
- fix some kernel-doc warnings
atomic-state-helpers:
- set pixel_blend_mode to prop default on reset
sysfb:
- Fix integer overflow
- fix constant comparison bug
pagemap:
- Prevent double migration of device pages
- Reset migration page count on eviction retry
- dma-unmap pages before handling migration errors
- use after free fixes
prime:
- fix prime exports tracing
amdgpu:
- Fix for drm_amdgpu_info_device with mixed 64 bit kernel and 32 bit
userspace
- plane blend mode fixes
- SR-IOV fix
- GFX8 fix
- MES queue reset fix
- GPUVM fixes
- DCN 6 warning fix
- DCN 3.5/3.6 fix
- DML fix
- Backlight fix
- Colorop fix
- DC get_estimated_bw() fix
- devcoredump fix
- Userq fixes
- APU PSP fix
- Cursor fix
amdkfd:
- MES queue eviction fix
- MQD debugfs fix
xe:
- oa uapi error handling fix
- drm info message to report FLAT_CSS base misalignment
i915:
- Drop an accidentally duplicated panel fitter call in DP MST
- Fix DDI clock programming for Cx0 and LT PHY
- Fix PTL CDCLK handling at probe, causing a glitch
- Fix dg2_power_well_count() return type
- Fix a NULL pointer deref at forced probe
- Fix selective fetch disable
amdxdna:
- out-of-bounds access fix
- reject commands chains with no commands
- handle chained mapping BO failures
- refuse to flush an imported BO
ethosu:
- handle mmio mapping failures
- handle storage modes only on hardware that supports it
- fix job completion fence cleanup
fastrpc:
- Publish the dma-buf only after copy_to_user succeeds
gud:
- Improve TV modes and rotation handling
nouveau:
- use-after-free fixes
- add missing scanline position support
- HDMI and DP fixes
- null pointer dereference fix
- dmem accounting fixes for large folios
- use write-combined maps for coherent
qaic:
- out-of-bounds access fix
tegra:
- Add blend mode properties
virtio:
- exit path and error handling fixes
* tag 'drm-fixes-2026-09-05' of https://gitlab.freedesktop.org/drm/kernel: (83 commits)
drm/xe/vram: report FLAT_CCS base misalignment
MAINTAINERS, mailmap: use Aditya Garg's linux.dev account
drm/amd/display: use plane color_mgmt_changed to track colorop changes
drm/amdgpu/userq: fix struct drm_amdgpu_info_device padding for 32bit compile
drm/amd/display: Fix cursor disable with horizontally split planes
drm/amdgpu/userq: dont overwrite the error of subsequent map call
drm/amdgpu: Skip accessing psp rum time db for APUs
drm/amdgpu: update the fw version for gfx12 userqueues
drm/amdgpu: update the fw version for gfx11 userqueues
drm/amdgpu: fix byte/dword unit mismatch in coredump IB dump
drm/amdkfd: fix scope of mqd_mgr dereference in pqm_debugfs_mqds
drm/amd/display: fix division by zero in get_estimated_bw()
drm/amd/display: use halving distribution for all encode-to-linear curves
drm/amd/display: Fix backlight control for luminance-capable OLED
drm/amd/display: Remove const Qualifier From Non-Pointer Fields
drm/amd/display: Set gpuvm min page size to 4K on dcn35/36
drm/amd/display: Fix DCN5/6 DML2 compilation warnings
drm/amdgpu: fix Idle BOs list in VM debugfs status info
drm/amdgpu: use AMDGPU_GPU_PAGE_SHIFT instead of PAGE_SHIFT
drm/amdgpu: Update queue reset support version
...
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"Nothing Earth-shattering, but worthwhile fixes nonetheless:
- Disable interrupts during page-table walk in show_pte()
- Fix kexec_file_load() with 52-bit capable kernels on machines
without 52-bit addressing
- Fix MIDR matching in CPU errata handling for KVM guests
- Avoid reading MTE-specific ID registers when MTE support is
disabled"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: Don't read GMID_EL1 when MTE is disabled
arm64: errata: pass REVIDR when matching target implementation CPUs
arm64: trans_pgd: clone only the linear map that exists at runtime
arm64: mm: Fix the lockless page-table walk in show_pte()
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Pull ceph fixes from Ilya Dryomov:
"A small fixup for the new nearfull_sync mount option, a potential
use-after-free fix (marked for stable) and a patch that eliminates
the last use of PageWriteback macro in the tree"
* tag 'ceph-for-7.3-rc2' of https://github.com/ceph/ceph-client:
ceph: apply nearfull_sync option on remount
libceph: remove pinning assertion in ceph_msg_data_iter_next()
ceph: lock mutex in ceph_mds_check_access()
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Instead of hard coding 30 for the number of bits used for the static
buffer ids in two places, create a macro. This way if it changes in the
future, it will change in all the locations that use it.
Link: https://patch.msgid.link/20260904151641.17eae0aa@gandalf.local.home
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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The comment about returning an error if the read fails on the first
iteration is slightly incorrect. It makes it sound like the only reason it
could fail on a later iteration is if the subbuf order changed. That is
incorrect, it could also fail if the length passed in was not a multiple
of the subbuf size. Fix the comment.
Link: https://lore.kernel.org/all/20260904143527.40e73d36@gandalf.local.home/
Link: https://patch.msgid.link/20260904144902.506862a1@gandalf.local.home
Fixes: dae8dda341d2 ("tracing: Fix subbuf resize races with trace_pipe_raw readers")
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Although ring_buffer_per_cpu::nr_pages is defined as unsigned long, it
is capped to 32-bits in a few places, limiting the operations possible
on a very large buffer. Use `unsigned long` where appropriate and
prevent truncation of values using nr_pages (or nr_subbufs).
While at it, subbuf_size must be at least `unsigned int`.
Note that persistent, remote and user-mapped ring buffers are capping
the number of pages to 30 bits already, making "int" safe in many
places.
Link: https://patch.msgid.link/20260904164450.1345852-5-vdonnefort@google.com
Signed-off-by: Vincent Donnefort <vdonnefort@google.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Static ring buffers (i.e. persistent, user-mapped and remote) rely on
the bpage::id field. The number of pages for those ring buffers must fit
into that variable. Enforce this limit on ring buffer creation or
user-mapping.
While at it, prevent nr_pages underflow when allocating a persistent
buffer.
Link: https://patch.msgid.link/20260904164450.1345852-4-vdonnefort@google.com
Fixes: be68d63a139b ("ring-buffer: Add ring_buffer_alloc_range()")
Signed-off-by: Vincent Donnefort <vdonnefort@google.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Concurrent subbuffer resizes may crash trace_pipe_raw readers or leak
uninitialized memory to userspace due to stale size values.
Modify ring_buffer_alloc_read_page() to handle the resizing of an
existing buffer_data_read_page if necessary and add a new
ring_buffer_read_page_size(). This new function enables ring-buffer
buffer_data_read_page users to not call the racy
ring_buffer_subbuf_size_get(). This makes the spare_size member of
ftrace_buffer_info redundant.
Finally, handle buffer_data_read_page/reader_page order discrepancy in
ring_buffer_read_page(). On a mismatch simply copy manually the data to
the buffer_data_read_page.
Link: https://lore.kernel.org/all/20260817140812.2C7D41F00A3A@smtp.kernel.org/
Link: https://patch.msgid.link/20260904164450.1345852-3-vdonnefort@google.com
Fixes: bce761d75745 ("ring-buffer: Read and write to ring buffers with custom sub buffer size")
Signed-off-by: Vincent Donnefort <vdonnefort@google.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Kumar Kartikeya Dwivedi says:
====================
Misc bug fixes - part 4
A set of miscellaneous fixes for bugs reported by Nicholas, and GPT-5.6
when analyzing those fixes, batched together again. See commit logs for
details. Related rhtab fixes from Yuan Chen and Nuoqi Gui have been
folded into the series.
====================
Link: https://patch.msgid.link/20260904104203.345917-1-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Add load-only timer_mim coverage for inner map identities propagated
through nested timer and bpf_for_each_map_elem() callbacks.
The negative case initializes a timer in the second inner map with the map
saved from the first inner map timer callback. The positive case pairs the
timer value with the map supplied to the same for-each callback.
Without the verifier fix, the mismatched-map program is accepted while the
same-map control is rejected. Preserving map_uid reverses both verdicts.
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904104203.345917-9-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Callback frame constructors initialize map-typed argument registers with
__mark_reg_known_zero() and then restore map_ptr. This clears map_uid,
which is the only field distinguishing inner maps that share an
inner_map_meta template.
When a timer callback invokes bpf_for_each_map_elem() on a second inner
map, both the saved first map and the second map value can reach the nested
callback as the same template with map_uid zero. bpf_timer_init() then
accepts pairing the timer from the second map with the first map.
The runtime records the first map in the timer without taking a reference.
Freeing that map does not find the timer stored in the second map, so a
later timer callback dereferences the freed map.
Copy map_uid from the same caller register as map_ptr when constructing
for-each, timer/workqueue, and task-work callback arguments. The existing
identity check can then reject mismatched inner maps while allowing a
callback value to be paired with its actual map.
Fixes: 3e8ce29850f1 ("bpf: Prevent pointer mismatch in bpf_timer_init.")
Fixes: 69c087ba6225 ("bpf: Add bpf_for_each_map_elem() helper")
Fixes: 5c8fd7e2b5b0 ("bpf: bpf task work plumbing")
Reported-by: Nicholas Carlini <npc@anthropic.com>
Suggested-by: Nicholas Carlini <npc@anthropic.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904104203.345917-8-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Add a verifier regression where an imprecise zero scalar reaches a kptr
store first and a nonzero scalar reaches the same instruction on a second
path.
Without the corresponding verifier fix, the second path is pruned and the
program is unexpectedly accepted. With the fix, the scalar range is
compared and the invalid store is rejected.
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904104203.345917-7-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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check_map_kptr_access() permits a scalar store into an untrusted kptr
field only when the register is known to contain zero. Unlike other
verifier checks whose outcome depends on a scalar value, it does not mark
that register precise.
A state checkpoint reached with an imprecise zero can therefore prune a
second path that reaches the store with an arbitrary nonzero scalar. The
program can write attacker-controlled bits into the kptr field and load
them back as a PTR_TO_BTF_ID.
Call mark_chain_precision() before accepting a known-zero register. This
forces state equivalence to compare its scalar range and makes the verifier
visit and reject a path carrying a nonzero value.
Fixes: 61df10c7799e ("bpf: Allow storing unreferenced kptr in map")
Reported-by: Nicholas Carlini <npc@anthropic.com>
Suggested-by: Nicholas Carlini <npc@anthropic.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260904104203.345917-6-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Resizable hash-map updates and deletions must not perform full special-field
destruction in their caller context. In particular, a referenced kptr must
remain attached to the allocation until the memory allocator destructor can
release it safely.
Add separate coverage for both affected paths. The update test stores a task
kptr, replaces the ordinary value bytes with BPF_EXIST, and verifies that the
kptr survived. The delete test removes an element and exchanges its kptr
through the still-valid map-value pointer before the allocation is reclaimed.
Both cases observe a NULL kptr when rhtab uses bpf_obj_free_fields(). They
recover and release the reference after rhtab switches to cancellation
semantics.
Signed-off-by: Nuoqi Gui <gnq25@mails.tsinghua.edu.cn>
[ kkd: Split update and delete coverage and rewrote the commit log ]
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904104203.345917-5-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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rhtab_map_update_existing() and rhtab_delete_elem() call
bpf_obj_free_fields() when replacing or deleting a value. These map
operations can run from BPF programs in NMI context, where releasing a
referenced kptr or another complex field is not generally safe.
Array and hash maps avoid that problem by cancelling only the asynchronous
fields which can be stopped safely in the caller context. Other ownership
state remains attached to the allocation until its memory allocator
destructor performs the final cleanup.
Use bpf_obj_cancel_fields() for the corresponding rhtab paths as well. This
cancels timers, workqueues, and task work while allowing rhtab_mem_dtor() to
release referenced kptrs when the allocation is eventually destroyed.
Fixes: 6905f8601298 ("bpf: Allow special fields in resizable hashtab")
Signed-off-by: Nuoqi Gui <gnq25@mails.tsinghua.edu.cn>
Acked-by: Mykyta Yatsenko <yatsenko@meta.com>
[ kkd: Rebased, used direct helper calls, and rewrote the commit log ]
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904104203.345917-4-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Exercise the rhtab special-field lifecycle with the sequence from the
original report. A bpf_for_each_map_elem() callback deletes the sole
element, then initializes and arms a timer through the callback value
pointer while it remains valid.
Use a one-element map and pin userspace and BPF execution to one CPU.
Repeated delete-and-replace cycles drain the per-CPU allocator cache, and
periodic RCU synchronization makes the deleted units available for
recycling.
After each replacement, a second BPF program calls bpf_timer_cancel()
on its value. A successful cancellation proves both that a timer-bearing
unit was recycled and that insertion preserved the timer field. Without
the fix, insertion clears that field and cancellation keeps returning
-EINVAL. A long expiration keeps the timer callback out of the test, so
the regression is detected without accessing freed memory.
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904104203.345917-3-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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rhtab_map_update_elem() initializes special fields after obtaining an
element from bpf_mem_cache_alloc(). The allocator can return a fresh,
zeroed unit, or recycle one from its RCU-pending lists before the
registered destructor has run.
A BPF program can retain a map-value pointer after deleting its element
and initialize and arm a timer through that pointer. If the deleted unit
is recycled, check_and_init_map_value() clears the only pointer to the
timer. Neither a later deletion nor rhtab_mem_dtor() can then cancel it,
and the callback can run with its key and value pointing into freed memory.
Do not reinitialize special fields on insertion. Fresh allocator units are
already zeroed. For recycled units, the special fields are ownership state
that must remain visible to the eventual destructor. copy_map_value()
already skips those fields, matching the non-preallocated hash-map path and
the lifecycle established by commit 275c30bcee66 ("bpf: Don't reinit map
value in prealloc_lru_pop").
Fixes: 6905f8601298 ("bpf: Allow special fields in resizable hashtab")
Reported-by: Nicholas Carlini <npc@anthropic.com>
Suggested-by: Nicholas Carlini <npc@anthropic.com>
Signed-off-by: Yuan Chen <chenyuan@kylinos.cn>
[ kkd: Split out the fix and rewrote the commit log ]
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904104203.345917-2-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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The IMA_MEASURE_PCR_IDX option is currently not visible in the kconfig
frontend, so it always uses its default, 10. This means that the
'range 8 14' is dead code, and users are unable to specify the pcr index
value.
In a previous discussion, Mimi explained that users should be able to use
this config option to specify the pcr index. [1]
Let's add a prompt for users to specify the pcr index, when EXPERT is
enabled.
This dead range was found by kconfirm, a static analysis tool for Kconfig.
Link: https://lore.kernel.org/all/1feff118-4afa-4b9c-86f1-271a7a88208f@gmail.com/T/#mc4efa2491b4937eb7c9e532c29ffba516a70e662 [1]
Signed-off-by: Julian Braha <julianbraha@gmail.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
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The bpf_nf test allocs a ct, sets snat and dnat with random addr and
port via bpf_ct_set_nat_info(), then looks the ct up and checks the
reply tuple against what was set.
The port comes from bpf_get_prandom_u32() and can be 0. For
bpf_ct_set_nat_info(), port 0 means "port not specified", so only the
addr is mapped and the kernel keeps the original port. The check then
compares that port with 0 and fails, which shows up as a flaky
"Test for source natting" failure in CI [1][2].
Keep the random port in 1..65535 so it is always specified.
[1] https://github.com/kernel-patches/bpf/actions/runs/33830002889/job/100893868791
[2] https://github.com/kernel-patches/bpf/actions/runs/33829976794/job/100893220999
Fixes: b06b45e82b59 ("selftests/bpf: add tests for bpf_ct_set_nat_info kfunc")
Signed-off-by: Jiayuan Chen <jiayuan.chen@linux.dev>
Link: https://lore.kernel.org/r/20260904073745.363314-1-jiayuan.chen@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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To prevent enable_count underflow in clk_core_disable,
I replaced the direct call to `es8389_set_bias_level(component, SND_SOC_BIAS_STANDBY);`
in the code with a helper function.
Signed-off-by: Zhang Yi <zhangyi@everest-semi.com>
Link: https://patch.msgid.link/20260904104141.3885-1-zhangyi@everest-semi.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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While converting to kmalloc_obj() API, a type assignment mismatch was
found between the desired struct dcn42_resource_pool and the allocated
struct dcn401_resource_pool. Fix the type (it is harmless: the objects
have the same contents and size).
Signed-off-by: Kees Cook <kees@kernel.org>
---
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Leo Li <sunpeng.li@amd.com>
Cc: Rodrigo Siqueira <siqueira@igalia.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Simona Vetter <simona@ffwll.ch>
Cc: Dan Wheeler <daniel.wheeler@amd.com>
Cc: Roman Li <Roman.Li@amd.com>
Cc: Ovidiu Bunea <ovidiu.bunea@amd.com>
Cc: Charlene Liu <Charlene.Liu@amd.com>
Cc: Leo Chen <leo.chen@amd.com>
Cc: Ivan Lipski <ivan.lipski@amd.com>
Cc: Gaghik Khachatrian <gaghik.khachatrian@amd.com>
Cc: <amd-gfx@lists.freedesktop.org>
Cc: <dri-devel@lists.freedesktop.org>
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The stream_config variable was not initialized before being passed to
sdw_stream_add_slave().
This may cause unexpected behavior when configuring the SoundWire stream.
Signed-off-by: Shuming Fan <shumingf@realtek.com>
Link: https://patch.msgid.link/20260904075835.130778-1-shumingf@realtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The stream_config variable was not initialized before being passed to
sdw_stream_add_slave().
This may cause unexpected behavior when configuring the SoundWire stream.
Signed-off-by: Shuming Fan <shumingf@realtek.com>
Link: https://patch.msgid.link/20260904075826.130751-1-shumingf@realtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The stream_config variable was not initialized before being passed to
sdw_stream_add_slave().
This may cause unexpected behavior when configuring the SoundWire stream.
Signed-off-by: Shuming Fan <shumingf@realtek.com>
Link: https://patch.msgid.link/20260904075818.130215-1-shumingf@realtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The stream_config variable was not initialized before being passed to
sdw_stream_add_slave().
This may cause unexpected behavior when configuring the SoundWire stream.
Signed-off-by: Shuming Fan <shumingf@realtek.com>
Link: https://patch.msgid.link/20260904075810.121467-1-shumingf@realtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The stream_config variable was not initialized before being passed to
sdw_stream_add_slave().
This may cause unexpected behavior when configuring the SoundWire stream.
Signed-off-by: Shuming Fan <shumingf@realtek.com>
Link: https://patch.msgid.link/20260904075757.108427-1-shumingf@realtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The stream_config variable was not initialized before being passed to
sdw_stream_add_slave().
This may cause unexpected behavior when configuring the SoundWire stream.
Signed-off-by: Shuming Fan <shumingf@realtek.com>
Link: https://patch.msgid.link/20260904075737.86525-1-shumingf@realtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
Pull HID fixes from Benjamin Tissoires:
- hid-hyperv build fixes on certain configs (Jiri Kosina)
- HID-BPF fix and selftests now that the bpf verifier is more
restrictive (Benjamin Tissoires)
- Some AI detected fixes for OOB, errors and validation (Ibrahim
Hashimov, Shen Yongchao, Wei Jie Law)
- various device fixes (Dave Carey and Vadim Klishko)
* tag 'hid-for-linus-2026090401' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
HID: bpf: serialize device reference release in struct_ops destroy path
HID: rmi: fix OOB access with undersized RMI reports
selftests/hid: prepare test_rdesc_fixup_get_data_overflow for the new verifier
selftests/hid: Add a test to ensure we can write fields in hid_device
HID: bpf: mark struct hid_device as safe BPF pointer
HID: wacom: validate report length in wacom_intuos_pro2_bt_irq
HID: multitouch: Fix stale MT slots when contact count drops to zero
HID: i2c-hid: Add a quirk for a Cirque I2C device.
HID: hyperv: make pointer arithmetics understandable for FORTIFY_SOURCE
HID: hyperv: fix build breakage with certain configs
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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
...
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git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux
Pull ata fixes from Niklas Cassel:
- Work around lost interrupts on Marvell 88SE61xx
The Marvell AHCI controller requires you to clear interrupts in the
opposite order from what is specified in the AHCI specification in
order to not lose interrupts (Hajo)
- Do not raise UNIT ATTENTION for depopulation commands
The libata completion function unconditionally sets sense data with
sense key UNIT ATTENTION (UA) for depopulation commands. The SCSI
layer will fail a command when seeing this sense data. UA is only
supposed to be raised if the capacity actually changed.
Since these commands are currently only supported as passthrough
commands, the user is expected to revalidate the device, which will
detect a capacity change anyway. Thus drop the unconditional UA until
a better solution has been implemented (Damien)
* tag 'ata-7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux:
ata: libata-scsi: do not raise UA for storage element depopulation and restoration
ata: ahci: work around lost interrupts on Marvell 88SE61xx
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cpufreq_policy_alloc() allocates policy->cpus with alloc_cpumask_var(),
i.e. without __GFP_ZERO, unlike the sibling related_cpus and real_cpus
masks. With CONFIG_CPUMASK_OFFSTACK=y the mask is a separate
kmalloc_node() allocation, so its bitmap holds whatever the slab allocator
left behind:
cpufreq_online()
cpufreq_policy_alloc()
alloc_cpumask_var(&policy->cpus) /* bitmap is uninitialized */
kobject_init_and_add() /* policy%u/ appears in sysfs */
cpufreq_policy_online()
cpumask_copy(policy->cpus, cpumask_of(cpu)) /* first valid value */
This leaves a window in which the sysfs attributes are already reachable
while policy->cpus is still garbage. show()/store() gate on
policy_is_inactive(), i.e. cpumask_empty(policy->cpus), so a non-zero
bitmap makes them run the attribute callbacks on a policy that is not
initialized yet.
Fix this by using zalloc_cpumask_var() for policy->cpus.
Fixes: 2fc3384dc75b ("cpufreq: Initialize policy->kobj while allocating policy")
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Zhongqiu Han <zhongqiu.han@oss.qualcomm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://patch.msgid.link/20260901143635.4106960-1-zhongqiu.han@oss.qualcomm.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Since commit e645535a954a ("tracing: Add option to use memmapped
memory for trace boot instance") changed trace_array_get_by_name() to
trace_array_create_systems(), enable_instances() does not reuse the
same name instance. Therefore, if an administrator mistakenly specifies
multiple `trace_instance=` options with duplicate names, all are
created but only the first is accessible via tracefs.
Check whether an instance with the same name already exists before
creating a new one, and reject duplicates with a warning.
Link: https://patch.msgid.link/178847790399.283263.5313150997200138426.stgit@devnote2
Fixes: e645535a954a ("tracing: Add option to use memmapped memory for trace boot instance")
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/smb
Pull smb server fixes from Namjae Jeon:
- Fix a tree connection use-after-free in smb2_tree_connect() by
balancing references across concurrent connect, disconnect, and
session logoff paths.
- Validate source and target ranges in COPYCHUNK requests before range
locking and copy operations.
- Fix an oplock break notification UAF by acquiring a connection
reference under ksmbd_inode lock and releasing it after the
notification work completes.
- Fix the sparc build by using an unsigned int for the atomic work
state, ensuring xchg() uses a supported four-byte operation.
* tag 'ksmbd-for-7.3-rc2-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/smb:
ksmbd: fix tree connection use-after-free in smb2_tree_connect()
ksmbd: validate COPYCHUNK source and target ranges
ksmbd: fix use-after-free in oplock break notification
ksmbd: fix sparc build with atomic work state
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git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull probes fixes from Masami Hiramatsu:
- Protect kprobe_blacklist with RCU
RCU-protect kprobe_blacklist and use kfree_rcu() to prevent UAF races
during module unloading and enable safe atomic lookups.
- Fix multi-probe field use-after-free
Duplicate field and type strings on trace_probe_event to prevent UAF
when freeing primary probe
- Fix probe BTF member lookup:
Check the containing inner struct/union kflag when resolving
anonymous members to ensure correct bitfield offset calculation
Prevent unnamed bitfields from being pushed to anon_stack in
btf_find_struct_member(), avoiding false lookup errors
Fix code block indentation in get_bitoffset_of_field()
- uprobes error pointer safety
Guard free_trace_uprobe() with IS_ERR_OR_NULL() to avoid crashing
during automatic cleanup when an error pointer is returned
* tag 'probes-fixes-v7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
kprobes: Protect kprobe_blacklist with RCU
tracing/probes: Fix use-after-free on field name/type of events with multiple probes
tracing/probes: Fix code indent in get_bitoffset_of_field()
tracing/probes: Fix BTF kflag check for anonymous struct member access
tracing/probes: Fix anon_stack check for unnamed bitfields in btf_find_struct_member
uprobes: guard trace cleanup against error pointers
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git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm
Pull pmdomain and cpuidle fixes from Ulf Hansson:
"pmdomain providers:
- mediatek: Fix Kconfig for Airoha power domains
- qcom: Revert adding the missing power domains for Eliza
cpuidle:
- psci: Fix support for probe deferral by dropping the faux device
- dt_idle_genpd: Free the original name allocation"
* tag 'pmdomain-v7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm:
cpuidle: dt_idle_genpd: kfree() the original name allocation
pmdomain: airoha: fix unselectable AIROHA_CPU_PM_DOMAIN kconfig
cpuidle: psci: Fix support for probe deferral by dropping the faux device
Revert "pmdomain: qcom: rpmhpd: Add missing MXC and MMCX power domains for Eliza"
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cpufreq_policy_alloc() initializes policy->rwsem after
kobject_init_and_add() has created the policy sysfs directory and its
default attributes. A sysfs access can therefore reach a policy callback
before the semaphore has been initialized.
Initialize policy->rwsem before publishing the policy kobject so sysfs
callbacks always see an initialized semaphore.
Fixes: 2fc3384dc75b ("cpufreq: Initialize policy->kobj while allocating policy")
Cc: All Applicable <stable@vger.kernel.org>
Link: https://lore.kernel.org/all/20260830155301.2713780-1-runyu.xiao@seu.edu.cn/
Reviewed-by: Zhongqiu Han <zhongqiu.han@oss.qualcomm.com>
Signed-off-by: Runyu Xiao <runyu.xiao@seu.edu.cn>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://patch.msgid.link/20260902041915.3453421-1-runyu.xiao@seu.edu.cn
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Kumar Kartikeya Dwivedi says:
====================
Misc bug fixes - part 3
A set of miscellaneous fixes for bugs reported by Nicholas, batched
together again. See commit logs for details. Some of this was caught and
posted by Ning before, but AI raised some concerns, so I'm resolving
those issues and commandeering their patches now.
Changelog:
----------
v1 -> v2
v1: https://lore.kernel.org/bpf/20260904063650.3877826-1-memxor@gmail.com
* Fix GCC-BPF failure due to missed BTF emission for a type.
====================
Link: https://patch.msgid.link/20260904084325.52250-1-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Add a sleepable verifier test that loads a refcount-only local kptr in an
explicit RCU read-side critical section, ends the section, and passes the
pointer to bpf_refcount_acquire().
The loaded pointer never carries NON_OWN_REF. After RCU unlock it retains
MEM_ALLOC while becoming PTR_UNTRUSTED, which previously made the kfunc
argument check accept it as a live allocated object. Expect verification to
reject the untrusted argument instead.
Signed-off-by: Ning Ding <dingning04@gmail.com>
[ kkd: Rewrote commit log ]
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904084325.52250-9-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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When the final RCU read-side critical section ends, a local kptr is demoted
to PTR_UNTRUSTED but retains MEM_ALLOC. The pointer may be NULL or may refer
to an object whose lifetime is no longer protected.
type_is_ptr_alloc_obj() nevertheless recognizes any PTR_TO_BTF_ID with
MEM_ALLOC as a live allocated object. In particular, a refcount-only local
kptr never carries NON_OWN_REF, so it still passes the
bpf_refcount_acquire() argument check after RCU protection ends. The kfunc
can then dereference NULL or stale memory.
Make type_is_ptr_alloc_obj() reject PTR_UNTRUSTED pointers. Since
type_is_non_owning_ref() is based on the same predicate, graph kfunc
arguments obey the same live-object requirement. Fault-protected reads of
the demoted pointer remain valid: writes are already rejected, and read
fixups use bpf_may_fault_on_deref() rather than this predicate.
Fixes: 1b12171533a9 ("bpf: Mark direct ld of stashed bpf_{rb,list}_node as non-owning ref")
Reported-by: Nicholas Carlini <npc@anthropic.com>
Suggested-by: Nicholas Carlini <npc@anthropic.com>
Signed-off-by: Ning Ding <dingning04@gmail.com>
[ kkd: Rewrote commit log ]
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904084325.52250-8-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Add a sleepable verifier test that loads a graph-node local kptr in an
explicit RCU read-side critical section, then passes its node to
bpf_rbtree_remove() after the section ends.
Before the verifier fix, the stale NON_OWN_REF flag makes the node look like
a live borrowed reference and the program is accepted. After the fix, the
pointer is demoted without NON_OWN_REF and the graph kfunc argument is
rejected.
Also exercise a graph kptr loaded while a spin lock provides implicit RCU
protection. The pointer must be invalidated when the lock is released, which
guards the required ordering between non-owning-reference invalidation and
RCU demotion.
Update the existing fault-protected load test state description. The
post-unlock pointer no longer carries NON_OWN_REF, but remains readable
because the load is rewritten to use BPF_PROBE_MEM.
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904084325.52250-7-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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A local kptr load of an object containing a graph node is marked MEM_RCU
and NON_OWN_REF while protected by RCU. When the last RCU read-side critical
section ends, invalidate_rcu_protected_refs() removes MEM_RCU and marks the
pointer PTR_UNTRUSTED, but leaves NON_OWN_REF set.
The stale flag lets graph kfunc argument checks continue treating the
pointer as a live borrowed reference. In particular, bpf_rbtree_remove()
can accept a pointer after its protection ended and return it as a new
owning reference, even though the object may already have been freed.
Clear NON_OWN_REF when an RCU-protected pointer is demoted. A spin lock also
provides implicit RCU protection, so invalidate non-owning references before
demoting RCU-protected pointers when releasing the lock. Otherwise the
demotion would clear the flag before invalidate_non_owning_refs() can find
and invalidate those aliases.
The demoted pointer remains available for fault-protected reads. Exempt such
reads from the allocated-object reference-state assertion; writes through a
fault-prone pointer are already rejected, and bpf_may_fault_on_deref() makes
the surviving loads use BPF_PROBE_MEM.
Fixes: 1b12171533a9 ("bpf: Mark direct ld of stashed bpf_{rb,list}_node as non-owning ref")
Reported-by: Nicholas Carlini <npc@anthropic.com>
Suggested-by: Nicholas Carlini <npc@anthropic.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904084325.52250-6-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Add verifier coverage for the distinction between owning and borrowed
arguments to bpf_refcount_acquire().
An owning pointer returned by bpf_obj_new() must continue producing a
non-NULL result without an extra check. An RCU-loaded local kptr is only
borrowed, so a checked result must load successfully while passing an
unchecked result to bpf_obj_drop() must be rejected as possibly NULL.
Use a sleepable syscall program for the borrowed cases so the explicit RCU
critical section is what permits the local kptr load. Without the verifier
fix, the unchecked case is incorrectly accepted. With it, the verifier
rejects the possibly NULL argument.
Signed-off-by: Ning Ding <dingning04@gmail.com>
[ kkd: Rewrote commit log ]
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904084325.52250-5-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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bpf_refcount_acquire() is fallible for a borrowed reference because the
object may have reached a zero refcount. The verifier therefore keeps
KF_RET_NULL on the return value unless the argument is an owning reference.
An RCU-protected load of a local kptr is marked MEM_ALLOC, but it only
receives NON_OWN_REF when the pointee contains a graph node. A refcounted
object without a graph node consequently looks like an owning reference
even though the loaded register has no acquired reference state. If the
program drops the last real reference while remaining in the RCU critical
section, refcount_inc_not_zero() returns NULL while the verifier treats the
result as non-NULL.
Only classify the argument as owning when it is backed by a verifier-tracked
reference. This retains the non-NULL return for pointers from bpf_obj_new(),
bpf_kptr_xchg(), or an earlier successful acquisition, while requiring a
NULL check for borrowed RCU kptrs.
Fixes: 1b12171533a9 ("bpf: Mark direct ld of stashed bpf_{rb,list}_node as non-owning ref")
Reported-by: Nicholas Carlini <npc@anthropic.com>
Suggested-by: Nicholas Carlini <npc@anthropic.com>
Signed-off-by: Ning Ding <dingning04@gmail.com>
[ kkd: Rewrote commit log ]
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904084325.52250-4-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Add verifier coverage for the two ways a non-percpu pointer can be stored
in a __percpu_kptr field: a program-BTF local allocation returned by
bpf_obj_new(), and a referenced kernel-BTF task_struct pointer.
Without the verifier fix, both programs are unexpectedly accepted and the
negative tests fail. Requiring MEM_PERCPU makes both programs fail
verification with the expected invalid-kptr diagnostic.
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904084325.52250-3-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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map_kptr_match_type() treats perm_flags as the set of register type flags
that a kptr field permits. Adding MEM_PERCPU to that set for
BPF_KPTR_PERCPU does not require the source register to carry it, however.
The subset test consequently accepts both a plain bpf_obj_new() allocation
and a referenced kernel pointer into a __percpu_kptr map field.
Loads from the field are always marked MEM_PERCPU. Consumers then treat the
stored value as the cookie returned by bpf_percpu_obj_new(): per-CPU pointer
helpers relocate it, and map teardown selects the per-CPU free path. A plain
allocation can therefore provide an arbitrary kernel read/write, while a
kernel pointer can be relocated into an invalid address or sent through a
missing destructor.
Require the source MEM_PERCPU flag to match the destination field kind.
This preserves valid bpf_percpu_obj_new() stores and rejects both the
program-BTF and kernel-BTF variants.
Fixes: 36d8bdf75a93 ("bpf: Add alloc/xchg/direct_access support for local percpu kptr")
Reported-by: Nicholas Carlini <npc@anthropic.com>
Suggested-by: Nicholas Carlini <npc@anthropic.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904084325.52250-2-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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HWSPNLCK_TIMEOUT is passed to hwspin_lock_timeout_in_atomic(), whose
timeout argument is in milliseconds, not microseconds:
atomic_delay += HWSPINLOCK_RETRY_DELAY_US;
if (atomic_delay > to * 1000)
return -ETIMEDOUT;
So stm32mp_exti_set_type() asks for a 1 second timeout where the comment
next to the macro says it wants 1 millisecond. The semaphore is polled
with udelay() from a section that holds chip_data->rlock, a
raw_spinlock_t, so preemption stays disabled for the whole wait on every
configuration, PREEMPT_RT included.
The hwspinlock core documents this explicitly:
If the mode is HWLOCK_IN_ATOMIC (called from an atomic context) the
timeout is handled with busy-waiting delays, hence shall not exceed
few msecs.
Fixes: 5257169ade8c ("irqchip/stm32-exti: Use the hwspin_lock_timeout_in_atomic() API")
Signed-off-by: Ju Nan <junan76@163.com>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Reviewed-by: Radu Rendec <radu@rendec.net>
Reviewed-by: Antonio Borneo <antonio.borneo@foss.st.com>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260821024756.24927-2-junan76@163.com
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