<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux.git/arch/arc, branch v7.2-rc4</title>
<subtitle>Linux kernel source tree</subtitle>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/'/>
<entry>
<title>ARC: configs: Drop redundant I2C_DESIGNWARE_PLATFORM</title>
<updated>2026-07-10T22:26:11+00:00</updated>
<author>
<name>Krzysztof Kozlowski</name>
<email>krzysztof.kozlowski@oss.qualcomm.com</email>
</author>
<published>2026-07-10T22:26:11+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=76f38ad1b39cf0321f7ecb7ea37b46f61a0f3d75'/>
<id>76f38ad1b39cf0321f7ecb7ea37b46f61a0f3d75</id>
<content type='text'>
I2C_DESIGNWARE_PLATFORM is default=y via I2C_DESIGNWARE_CORE, which is
enabled.  No impact on include/generated/autoconf.h.

Signed-off-by: Krzysztof Kozlowski &lt;krzysztof.kozlowski@oss.qualcomm.com&gt;
Signed-off-by: Vineet Gupta &lt;vgupta@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
I2C_DESIGNWARE_PLATFORM is default=y via I2C_DESIGNWARE_CORE, which is
enabled.  No impact on include/generated/autoconf.h.

Signed-off-by: Krzysztof Kozlowski &lt;krzysztof.kozlowski@oss.qualcomm.com&gt;
Signed-off-by: Vineet Gupta &lt;vgupta@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>arc: validate DT CPU map strings before parsing them</title>
<updated>2026-07-10T22:26:04+00:00</updated>
<author>
<name>Pengpeng Hou</name>
<email>pengpeng@iscas.ac.cn</email>
</author>
<published>2026-07-10T22:26:04+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=460511c11f0d67e62c6526b191b205eafc8033b2'/>
<id>460511c11f0d67e62c6526b191b205eafc8033b2</id>
<content type='text'>
arc_get_cpu_map() fetches the possible-cpus or present-cpus property
from the flat DT and immediately passes the raw pointer to
cpulist_parse(). That parser expects a NUL-terminated text buffer, but
this path does not prove that the DT property is terminated within its
declared bounds.

Reject unterminated CPU-map properties before handing them to
cpulist_parse().

Changes since v1:
- fold the NUL-termination check into the initial lookup test, as
  suggested by Vineet Gupta

Signed-off-by: Pengpeng Hou &lt;pengpeng@iscas.ac.cn&gt;
Signed-off-by: Vineet Gupta &lt;vgupta@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
arc_get_cpu_map() fetches the possible-cpus or present-cpus property
from the flat DT and immediately passes the raw pointer to
cpulist_parse(). That parser expects a NUL-terminated text buffer, but
this path does not prove that the DT property is terminated within its
declared bounds.

Reject unterminated CPU-map properties before handing them to
cpulist_parse().

Changes since v1:
- fold the NUL-termination check into the initial lookup test, as
  suggested by Vineet Gupta

Signed-off-by: Pengpeng Hou &lt;pengpeng@iscas.ac.cn&gt;
Signed-off-by: Vineet Gupta &lt;vgupta@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge tag 'mm-nonmm-stable-2026-06-21-10-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm</title>
<updated>2026-06-21T20:20:19+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2026-06-21T20:20:19+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=2e05544060b9fef5d4d0e0172944e6956c55080f'/>
<id>2e05544060b9fef5d4d0e0172944e6956c55080f</id>
<content type='text'>
Pull non-MM updates from Andrew Morton:

 - "taskstats: fix TGID dead-thread stat retention" (Yiyang Chen)

   Fix a taskstats TGID aggregation bug where fields added in the TGID
   query path were not preserved after thread exit, and adds a kselftest
   covering the regression.

 - "lib/tests: string_helpers: Slight improvements" (Andy Shevchenko)

   Improve lib/tests/string_helpers_kunit.c a little

 - "lib/base64: decode fixes" (Josh Law)

   Address minor issues in lib/base64.c

 - "selftests/filelock: Make output more kselftestish" (Mark Brown)

   Make the output from the ofdlocks test a bit easier for tooling to
   work with. Also ignore the generated file

 - "uaccess: unify inline vs outline copy_{from,to}_user() selection"
   (Yury Norov)

   Simplify the usercopy code by removing the selectability of inlining
   copy_{from,to}_user().

 - "ocfs2: validate inline xattr header consumers" (ZhengYuan Huang)

   Fix a number of possible issues in the ocfs2 xattr code

 - "lib and lib/cmdline enhancements" (Dmitry Antipov)

   Provide additional robustness checking in the cmdline handling code
   and its in-kernel testing and selftests

 - "cleanup the RAID6 P/Q library" (Christoph Hellwig)

   Clean up the RAID6 P/Q library to match the recent updates to the
   RAID 5 XOR library and other CRC/crypto libraries

 - "ocfs2: harden inode validators against forged metadata" (Michael
   Bommarito)

   Add three structural checks to OCFS2 dinode validation so malformed
   on-disk fields are rejected before ocfs2_populate_inode() copies them
   into the in-core inode

 - "lib/raid: replace __get_free_pages() call with kmalloc()" (Mike
   Rapoport)

   Clean up the lib/raid code by using kmalloc() in more places

* tag 'mm-nonmm-stable-2026-06-21-10-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (108 commits)
  ocfs2: fix circular locking dependency in ocfs2_dio_end_io_write
  ocfs2: fix NULL h_transaction deref in ocfs2_assure_trans_credits
  lib: interval_tree_test: validate benchmark parameters
  ocfs2: avoid moving extents to occupied clusters
  treewide: fix transposed "sign" typos and update spelling.txt
  ocfs2: fix UBSAN array-index-out-of-bounds in ocfs2_sum_rightmost_rec
  fat: reject BPB volumes whose data area starts beyond total sectors
  selftests/uevent: increase __UEVENT_BUFFER_SIZE to avoid ENOBUFS on busy systems
  lib/test_firmware: allocate the configured into_buf size
  fs: efs: remove unneeded debug prints
  checkpatch: cuppress warnings when Reported-by: is followed by Link:
  MAINTAINERS: add Alexander as a kcov reviewer
  mailmap: update Alexander Sverdlin's Email addresses
  fs: fat: inode: replace sprintf() with scnprintf()
  ocfs2: fix out-of-bounds write in ocfs2_remove_refcount_extent
  ocfs2: fix race between ocfs2_control_install_private() and ocfs2_control_release()
  ocfs2/dlm: require a ref for locking_state debugfs open
  ocfs2: reject FITRIM ranges shorter than a cluster
  ocfs2: validate fast symlink target during inode read
  ocfs2: add journal NULL check in ocfs2_checkpoint_inode()
  ...
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pull non-MM updates from Andrew Morton:

 - "taskstats: fix TGID dead-thread stat retention" (Yiyang Chen)

   Fix a taskstats TGID aggregation bug where fields added in the TGID
   query path were not preserved after thread exit, and adds a kselftest
   covering the regression.

 - "lib/tests: string_helpers: Slight improvements" (Andy Shevchenko)

   Improve lib/tests/string_helpers_kunit.c a little

 - "lib/base64: decode fixes" (Josh Law)

   Address minor issues in lib/base64.c

 - "selftests/filelock: Make output more kselftestish" (Mark Brown)

   Make the output from the ofdlocks test a bit easier for tooling to
   work with. Also ignore the generated file

 - "uaccess: unify inline vs outline copy_{from,to}_user() selection"
   (Yury Norov)

   Simplify the usercopy code by removing the selectability of inlining
   copy_{from,to}_user().

 - "ocfs2: validate inline xattr header consumers" (ZhengYuan Huang)

   Fix a number of possible issues in the ocfs2 xattr code

 - "lib and lib/cmdline enhancements" (Dmitry Antipov)

   Provide additional robustness checking in the cmdline handling code
   and its in-kernel testing and selftests

 - "cleanup the RAID6 P/Q library" (Christoph Hellwig)

   Clean up the RAID6 P/Q library to match the recent updates to the
   RAID 5 XOR library and other CRC/crypto libraries

 - "ocfs2: harden inode validators against forged metadata" (Michael
   Bommarito)

   Add three structural checks to OCFS2 dinode validation so malformed
   on-disk fields are rejected before ocfs2_populate_inode() copies them
   into the in-core inode

 - "lib/raid: replace __get_free_pages() call with kmalloc()" (Mike
   Rapoport)

   Clean up the lib/raid code by using kmalloc() in more places

* tag 'mm-nonmm-stable-2026-06-21-10-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (108 commits)
  ocfs2: fix circular locking dependency in ocfs2_dio_end_io_write
  ocfs2: fix NULL h_transaction deref in ocfs2_assure_trans_credits
  lib: interval_tree_test: validate benchmark parameters
  ocfs2: avoid moving extents to occupied clusters
  treewide: fix transposed "sign" typos and update spelling.txt
  ocfs2: fix UBSAN array-index-out-of-bounds in ocfs2_sum_rightmost_rec
  fat: reject BPB volumes whose data area starts beyond total sectors
  selftests/uevent: increase __UEVENT_BUFFER_SIZE to avoid ENOBUFS on busy systems
  lib/test_firmware: allocate the configured into_buf size
  fs: efs: remove unneeded debug prints
  checkpatch: cuppress warnings when Reported-by: is followed by Link:
  MAINTAINERS: add Alexander as a kcov reviewer
  mailmap: update Alexander Sverdlin's Email addresses
  fs: fat: inode: replace sprintf() with scnprintf()
  ocfs2: fix out-of-bounds write in ocfs2_remove_refcount_extent
  ocfs2: fix race between ocfs2_control_install_private() and ocfs2_control_release()
  ocfs2/dlm: require a ref for locking_state debugfs open
  ocfs2: reject FITRIM ranges shorter than a cluster
  ocfs2: validate fast symlink target during inode read
  ocfs2: add journal NULL check in ocfs2_checkpoint_inode()
  ...
</pre>
</div>
</content>
</entry>
<entry>
<title>uaccess: unify inline vs outline copy_{from,to}_user() selection</title>
<updated>2026-05-29T04:24:44+00:00</updated>
<author>
<name>Yury Norov</name>
<email>ynorov@nvidia.com</email>
</author>
<published>2026-04-25T02:08:56+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=c02be2ad2b88c67c5d7c06b6aa7083b5b40e1077'/>
<id>c02be2ad2b88c67c5d7c06b6aa7083b5b40e1077</id>
<content type='text'>
The kernel allows arches to select between inline and outline
implementations of the copy_{from,to}_user() by defining individual
INLINE_COPY_FROM_USER and INLINE_COPY_TO_USER, correspondingly.  However,
all arches enable or disable them always together.

Without the real use-case for one helper being inlined while the other
outlined, having independent controls is excessive and error prone.

Switch the codebase to the single unified INLINE_COPY_USER control.

Link: https://lore.kernel.org/20260425020857.356850-3-ynorov@nvidia.com
Signed-off-by: Yury Norov &lt;ynorov@nvidia.com&gt;
Tested-by: Alice Ryhl &lt;aliceryhl@google.com&gt;
Cc: Arnd Bergmann &lt;arnd@arndb.de&gt;
Cc: Christophe Leroy (CS GROUP) &lt;chleroy@kernel.org&gt;
Cc: Mathieu Desnoyers &lt;mathieu.desnoyers@efficios.com&gt;
Cc: Peter Zijlstra &lt;peterz@infradead.org&gt;
Cc: Randy Dunlap &lt;rdunlap@infradead.org&gt;
Cc: Viktor Malik &lt;vmalik@redhat.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
The kernel allows arches to select between inline and outline
implementations of the copy_{from,to}_user() by defining individual
INLINE_COPY_FROM_USER and INLINE_COPY_TO_USER, correspondingly.  However,
all arches enable or disable them always together.

Without the real use-case for one helper being inlined while the other
outlined, having independent controls is excessive and error prone.

Switch the codebase to the single unified INLINE_COPY_USER control.

Link: https://lore.kernel.org/20260425020857.356850-3-ynorov@nvidia.com
Signed-off-by: Yury Norov &lt;ynorov@nvidia.com&gt;
Tested-by: Alice Ryhl &lt;aliceryhl@google.com&gt;
Cc: Arnd Bergmann &lt;arnd@arndb.de&gt;
Cc: Christophe Leroy (CS GROUP) &lt;chleroy@kernel.org&gt;
Cc: Mathieu Desnoyers &lt;mathieu.desnoyers@efficios.com&gt;
Cc: Peter Zijlstra &lt;peterz@infradead.org&gt;
Cc: Randy Dunlap &lt;rdunlap@infradead.org&gt;
Cc: Viktor Malik &lt;vmalik@redhat.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge tag 'v7.1-rc5' into driver-core-next</title>
<updated>2026-05-25T00:40:57+00:00</updated>
<author>
<name>Danilo Krummrich</name>
<email>dakr@kernel.org</email>
</author>
<published>2026-05-25T00:40:57+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=56785dcb2ef6d3cff82ac33f2e34db94377416a3'/>
<id>56785dcb2ef6d3cff82ac33f2e34db94377416a3</id>
<content type='text'>
We need the driver-core fixes in here as well to build on top of.

Signed-off-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
We need the driver-core fixes in here as well to build on top of.

Signed-off-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>ring-buffer: Flush and stop persistent ring buffer on panic</title>
<updated>2026-05-21T12:20:58+00:00</updated>
<author>
<name>Masami Hiramatsu (Google)</name>
<email>mhiramat@kernel.org</email>
</author>
<published>2026-04-30T03:28:16+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=a494d3c8d5392bcdff83c2a593df0c160ff9f322'/>
<id>a494d3c8d5392bcdff83c2a593df0c160ff9f322</id>
<content type='text'>
On real hardware, panic and machine reboot may not flush hardware cache
to memory. This means the persistent ring buffer, which relies on a
coherent state of memory, may not have its events written to the buffer
and they may be lost. Moreover, there may be inconsistency with the
counters which are used for validation of the integrity of the
persistent ring buffer which may cause all data to be discarded.

To avoid this issue, stop recording of the ring buffer on panic and
flush the cache of the ring buffer's memory.

Fixes: e645535a954a ("tracing: Add option to use memmapped memory for trace boot instance")
Cc: stable@vger.kernel.org
Cc: Will Deacon &lt;will@kernel.org&gt;
Cc: Mathieu Desnoyers &lt;mathieu.desnoyers@efficios.com&gt;
Cc: Ian Rogers &lt;irogers@google.com&gt;
Link: https://patch.msgid.link/177751969602.2136606.12031934362587643488.stgit@mhiramat.tok.corp.google.com
Signed-off-by: Masami Hiramatsu (Google) &lt;mhiramat@kernel.org&gt;
Acked-by: Catalin Marinas &lt;catalin.marinas@arm.com&gt;
Acked-by: Geert Uytterhoeven &lt;geert@linux-m68k.org&gt;
Signed-off-by: Steven Rostedt &lt;rostedt@goodmis.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
On real hardware, panic and machine reboot may not flush hardware cache
to memory. This means the persistent ring buffer, which relies on a
coherent state of memory, may not have its events written to the buffer
and they may be lost. Moreover, there may be inconsistency with the
counters which are used for validation of the integrity of the
persistent ring buffer which may cause all data to be discarded.

To avoid this issue, stop recording of the ring buffer on panic and
flush the cache of the ring buffer's memory.

Fixes: e645535a954a ("tracing: Add option to use memmapped memory for trace boot instance")
Cc: stable@vger.kernel.org
Cc: Will Deacon &lt;will@kernel.org&gt;
Cc: Mathieu Desnoyers &lt;mathieu.desnoyers@efficios.com&gt;
Cc: Ian Rogers &lt;irogers@google.com&gt;
Link: https://patch.msgid.link/177751969602.2136606.12031934362587643488.stgit@mhiramat.tok.corp.google.com
Signed-off-by: Masami Hiramatsu (Google) &lt;mhiramat@kernel.org&gt;
Acked-by: Catalin Marinas &lt;catalin.marinas@arm.com&gt;
Acked-by: Geert Uytterhoeven &lt;geert@linux-m68k.org&gt;
Signed-off-by: Steven Rostedt &lt;rostedt@goodmis.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>driver core: Replace dev-&gt;dma_coherent with dev_dma_coherent()</title>
<updated>2026-04-26T21:43:58+00:00</updated>
<author>
<name>Douglas Anderson</name>
<email>dianders@chromium.org</email>
</author>
<published>2026-04-06T23:23:00+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=3e2c1e213ac2bfc9068a2686ef380ee0d8bef949'/>
<id>3e2c1e213ac2bfc9068a2686ef380ee0d8bef949</id>
<content type='text'>
In C, bitfields are not necessarily safe to modify from multiple
threads without locking. Switch "dma_coherent" over to the "flags"
field so modifications are safe.

Cc: Christoph Hellwig &lt;hch@lst.de&gt;
Reviewed-by: Rafael J. Wysocki (Intel) &lt;rafael@kernel.org&gt;
Reviewed-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
Acked-by: Vinod Koul &lt;vkoul@kernel.org&gt;
Acked-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
Acked-by: Marek Szyprowski &lt;m.szyprowski@samsung.com&gt;
Signed-off-by: Douglas Anderson &lt;dianders@chromium.org&gt;
Link: https://patch.msgid.link/20260406162231.v5.7.If839f6dde98979fce177f70c6c74689a1904ee76@changeid
[ Since all DEV_FLAG_DMA_COHERENT accessors are exposed unconditionally,
  also drop the CONFIG guards around dev_assign_dma_coherent() in
  device_initialize() to ensure a correct default value. - Danilo ]
Signed-off-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
In C, bitfields are not necessarily safe to modify from multiple
threads without locking. Switch "dma_coherent" over to the "flags"
field so modifications are safe.

Cc: Christoph Hellwig &lt;hch@lst.de&gt;
Reviewed-by: Rafael J. Wysocki (Intel) &lt;rafael@kernel.org&gt;
Reviewed-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
Acked-by: Vinod Koul &lt;vkoul@kernel.org&gt;
Acked-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
Acked-by: Marek Szyprowski &lt;m.szyprowski@samsung.com&gt;
Signed-off-by: Douglas Anderson &lt;dianders@chromium.org&gt;
Link: https://patch.msgid.link/20260406162231.v5.7.If839f6dde98979fce177f70c6c74689a1904ee76@changeid
[ Since all DEV_FLAG_DMA_COHERENT accessors are exposed unconditionally,
  also drop the CONFIG guards around dev_assign_dma_coherent() in
  device_initialize() to ensure a correct default value. - Danilo ]
Signed-off-by: Danilo Krummrich &lt;dakr@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf</title>
<updated>2026-04-17T22:58:22+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2026-04-17T22:58:22+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=eb0d6d97c27c29cd7392c8fd74f46edf7dff7ec2'/>
<id>eb0d6d97c27c29cd7392c8fd74f46edf7dff7ec2</id>
<content type='text'>
Pull bpf fixes from Alexei Starovoitov:
 "Most of the diff stat comes from Xu Kuohai's fix to emit ENDBR/BTI,
  since all JITs had to be touched to move constant blinding out and
  pass bpf_verifier_env in.

   - Fix use-after-free in arena_vm_close on fork (Alexei Starovoitov)

   - Dissociate struct_ops program with map if map_update fails (Amery
     Hung)

   - Fix out-of-range and off-by-one bugs in arm64 JIT (Daniel Borkmann)

   - Fix precedence bug in convert_bpf_ld_abs alignment check (Daniel
     Borkmann)

   - Fix arg tracking for imprecise/multi-offset in BPF_ST/STX insns
     (Eduard Zingerman)

   - Copy token from main to subprogs to fix missing kallsyms (Eduard
     Zingerman)

   - Prevent double close and leak of btf objects in libbpf (Jiri Olsa)

   - Fix af_unix null-ptr-deref in sockmap (Michal Luczaj)

   - Fix NULL deref in map_kptr_match_type for scalar regs (Mykyta
     Yatsenko)

   - Avoid unnecessary IPIs. Remove redundant bpf_flush_icache() in
     arm64 and riscv JITs (Puranjay Mohan)

   - Fix out of bounds access. Validate node_id in arena_alloc_pages()
     (Puranjay Mohan)

   - Reject BPF-to-BPF calls and callbacks in arm32 JIT (Puranjay Mohan)

   - Refactor all JITs to pass bpf_verifier_env to emit ENDBR/BTI for
     indirect jump targets on x86-64, arm64 JITs (Xu Kuohai)

   - Allow UTF-8 literals in bpf_bprintf_prepare() (Yihan Ding)"

* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: (32 commits)
  bpf, arm32: Reject BPF-to-BPF calls and callbacks in the JIT
  bpf: Dissociate struct_ops program with map if map_update fails
  bpf: Validate node_id in arena_alloc_pages()
  libbpf: Prevent double close and leak of btf objects
  selftests/bpf: cover UTF-8 trace_printk output
  bpf: allow UTF-8 literals in bpf_bprintf_prepare()
  selftests/bpf: Reject scalar store into kptr slot
  bpf: Fix NULL deref in map_kptr_match_type for scalar regs
  bpf: Fix precedence bug in convert_bpf_ld_abs alignment check
  bpf, arm64: Emit BTI for indirect jump target
  bpf, x86: Emit ENDBR for indirect jump targets
  bpf: Add helper to detect indirect jump targets
  bpf: Pass bpf_verifier_env to JIT
  bpf: Move constants blinding out of arch-specific JITs
  bpf, sockmap: Take state lock for af_unix iter
  bpf, sockmap: Fix af_unix null-ptr-deref in proto update
  selftests/bpf: Extend bpf_iter_unix to attempt deadlocking
  bpf, sockmap: Fix af_unix iter deadlock
  bpf, sockmap: Annotate af_unix sock:: Sk_state data-races
  selftests/bpf: verify kallsyms entries for token-loaded subprograms
  ...
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pull bpf fixes from Alexei Starovoitov:
 "Most of the diff stat comes from Xu Kuohai's fix to emit ENDBR/BTI,
  since all JITs had to be touched to move constant blinding out and
  pass bpf_verifier_env in.

   - Fix use-after-free in arena_vm_close on fork (Alexei Starovoitov)

   - Dissociate struct_ops program with map if map_update fails (Amery
     Hung)

   - Fix out-of-range and off-by-one bugs in arm64 JIT (Daniel Borkmann)

   - Fix precedence bug in convert_bpf_ld_abs alignment check (Daniel
     Borkmann)

   - Fix arg tracking for imprecise/multi-offset in BPF_ST/STX insns
     (Eduard Zingerman)

   - Copy token from main to subprogs to fix missing kallsyms (Eduard
     Zingerman)

   - Prevent double close and leak of btf objects in libbpf (Jiri Olsa)

   - Fix af_unix null-ptr-deref in sockmap (Michal Luczaj)

   - Fix NULL deref in map_kptr_match_type for scalar regs (Mykyta
     Yatsenko)

   - Avoid unnecessary IPIs. Remove redundant bpf_flush_icache() in
     arm64 and riscv JITs (Puranjay Mohan)

   - Fix out of bounds access. Validate node_id in arena_alloc_pages()
     (Puranjay Mohan)

   - Reject BPF-to-BPF calls and callbacks in arm32 JIT (Puranjay Mohan)

   - Refactor all JITs to pass bpf_verifier_env to emit ENDBR/BTI for
     indirect jump targets on x86-64, arm64 JITs (Xu Kuohai)

   - Allow UTF-8 literals in bpf_bprintf_prepare() (Yihan Ding)"

* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: (32 commits)
  bpf, arm32: Reject BPF-to-BPF calls and callbacks in the JIT
  bpf: Dissociate struct_ops program with map if map_update fails
  bpf: Validate node_id in arena_alloc_pages()
  libbpf: Prevent double close and leak of btf objects
  selftests/bpf: cover UTF-8 trace_printk output
  bpf: allow UTF-8 literals in bpf_bprintf_prepare()
  selftests/bpf: Reject scalar store into kptr slot
  bpf: Fix NULL deref in map_kptr_match_type for scalar regs
  bpf: Fix precedence bug in convert_bpf_ld_abs alignment check
  bpf, arm64: Emit BTI for indirect jump target
  bpf, x86: Emit ENDBR for indirect jump targets
  bpf: Add helper to detect indirect jump targets
  bpf: Pass bpf_verifier_env to JIT
  bpf: Move constants blinding out of arch-specific JITs
  bpf, sockmap: Take state lock for af_unix iter
  bpf, sockmap: Fix af_unix null-ptr-deref in proto update
  selftests/bpf: Extend bpf_iter_unix to attempt deadlocking
  bpf, sockmap: Fix af_unix iter deadlock
  bpf, sockmap: Annotate af_unix sock:: Sk_state data-races
  selftests/bpf: verify kallsyms entries for token-loaded subprograms
  ...
</pre>
</div>
</content>
</entry>
<entry>
<title>bpf: Pass bpf_verifier_env to JIT</title>
<updated>2026-04-16T14:03:40+00:00</updated>
<author>
<name>Xu Kuohai</name>
<email>xukuohai@huawei.com</email>
</author>
<published>2026-04-16T06:43:38+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=d9ef13f72711f2dad64cd4445472ded98fb6c954'/>
<id>d9ef13f72711f2dad64cd4445472ded98fb6c954</id>
<content type='text'>
Pass bpf_verifier_env to bpf_int_jit_compile(). The follow-up patch will
use env-&gt;insn_aux_data in the JIT stage to detect indirect jump targets.

Since bpf_prog_select_runtime() can be called by cbpf and lib/test_bpf.c
code without verifier, introduce helper __bpf_prog_select_runtime()
to accept the env parameter.

Remove the call to bpf_prog_select_runtime() in bpf_prog_load(), and
switch to call __bpf_prog_select_runtime() in the verifier, with env
variable passed. The original bpf_prog_select_runtime() is preserved for
cbpf and lib/test_bpf.c, where env is NULL.

Now all constants blinding calls are moved into the verifier, except
the cbpf and lib/test_bpf.c cases. The instructions arrays are adjusted
by bpf_patch_insn_data() function for normal cases, so there is no need
to call adjust_insn_arrays() in bpf_jit_blind_constants(). Remove it.

Reviewed-by: Anton Protopopov &lt;a.s.protopopov@gmail.com&gt; # v8
Reviewed-by: Emil Tsalapatis &lt;emil@etsalapatis.com&gt; # v12
Acked-by: Hengqi Chen &lt;hengqi.chen@gmail.com&gt; # v14
Signed-off-by: Xu Kuohai &lt;xukuohai@huawei.com&gt;
Link: https://lore.kernel.org/r/20260416064341.151802-3-xukuohai@huaweicloud.com
Signed-off-by: Alexei Starovoitov &lt;ast@kernel.org&gt;

</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pass bpf_verifier_env to bpf_int_jit_compile(). The follow-up patch will
use env-&gt;insn_aux_data in the JIT stage to detect indirect jump targets.

Since bpf_prog_select_runtime() can be called by cbpf and lib/test_bpf.c
code without verifier, introduce helper __bpf_prog_select_runtime()
to accept the env parameter.

Remove the call to bpf_prog_select_runtime() in bpf_prog_load(), and
switch to call __bpf_prog_select_runtime() in the verifier, with env
variable passed. The original bpf_prog_select_runtime() is preserved for
cbpf and lib/test_bpf.c, where env is NULL.

Now all constants blinding calls are moved into the verifier, except
the cbpf and lib/test_bpf.c cases. The instructions arrays are adjusted
by bpf_patch_insn_data() function for normal cases, so there is no need
to call adjust_insn_arrays() in bpf_jit_blind_constants(). Remove it.

Reviewed-by: Anton Protopopov &lt;a.s.protopopov@gmail.com&gt; # v8
Reviewed-by: Emil Tsalapatis &lt;emil@etsalapatis.com&gt; # v12
Acked-by: Hengqi Chen &lt;hengqi.chen@gmail.com&gt; # v14
Signed-off-by: Xu Kuohai &lt;xukuohai@huawei.com&gt;
Link: https://lore.kernel.org/r/20260416064341.151802-3-xukuohai@huaweicloud.com
Signed-off-by: Alexei Starovoitov &lt;ast@kernel.org&gt;

</pre>
</div>
</content>
</entry>
<entry>
<title>bpf: Move constants blinding out of arch-specific JITs</title>
<updated>2026-04-16T14:03:40+00:00</updated>
<author>
<name>Xu Kuohai</name>
<email>xukuohai@huawei.com</email>
</author>
<published>2026-04-16T06:43:37+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=d3e945223e0158c85dbde23de4f89493a2a817f6'/>
<id>d3e945223e0158c85dbde23de4f89493a2a817f6</id>
<content type='text'>
During the JIT stage, constants blinding rewrites instructions but only
rewrites the private instruction copy of the JITed subprog, leaving the
global env-&gt;prog-&gt;insnsi and env-&gt;insn_aux_data untouched. This causes a
mismatch between subprog instructions and the global state, making it
difficult to use the global data in the JIT.

To avoid this mismatch, and given that all arch-specific JITs already
support constants blinding, move it to the generic verifier code, and
switch to rewrite the global env-&gt;prog-&gt;insnsi with the global states
adjusted, as other rewrites in the verifier do.

This removes the constants blinding calls in each JIT, which are largely
duplicated code across architectures.

Since constants blinding is only required for JIT, and there are two
JIT entry functions, jit_subprogs() for BPF programs with multiple
subprogs and bpf_prog_select_runtime() for programs with no subprogs,
move the constants blinding invocation into these two functions.

In the verifier path, bpf_patch_insn_data() is used to keep global
verifier auxiliary data in sync with patched instructions. A key
question is whether this global auxiliary data should be restored
on the failure path.

Besides instructions, bpf_patch_insn_data() adjusts:
  - prog-&gt;aux-&gt;poke_tab
  - env-&gt;insn_array_maps
  - env-&gt;subprog_info
  - env-&gt;insn_aux_data

For prog-&gt;aux-&gt;poke_tab, it is only used by JIT or only meaningful after
JIT succeeds, so it does not need to be restored on the failure path.

For env-&gt;insn_array_maps, when JIT fails, programs using insn arrays
are rejected by bpf_insn_array_ready() due to missing JIT addresses.
Hence, env-&gt;insn_array_maps is only meaningful for JIT and does not need
to be restored.

For subprog_info, if jit_subprogs fails and CONFIG_BPF_JIT_ALWAYS_ON
is not enabled, kernel falls back to interpreter. In this case,
env-&gt;subprog_info is used to determine subprogram stack depth. So it
must be restored on failure.

For env-&gt;insn_aux_data, it is freed by clear_insn_aux_data() at the
end of bpf_check(). Before freeing, clear_insn_aux_data() loops over
env-&gt;insn_aux_data to release jump targets recorded in it. The loop
uses env-&gt;prog-&gt;len as the array length, but this length no longer
matches the actual size of the adjusted env-&gt;insn_aux_data array after
constants blinding.

To address it, a simple approach is to keep insn_aux_data as adjusted
after failure, since it will be freed shortly, and record its actual size
for the loop in clear_insn_aux_data(). But since clear_insn_aux_data()
uses the same index to loop over both env-&gt;prog-&gt;insnsi and env-&gt;insn_aux_data,
this approach results in incorrect index for the insnsi array. So an
alternative approach is adopted: clone the original env-&gt;insn_aux_data
before blinding and restore it after failure, similar to env-&gt;prog.

For classic BPF programs, constants blinding works as before since it
is still invoked from bpf_prog_select_runtime().

Reviewed-by: Anton Protopopov &lt;a.s.protopopov@gmail.com&gt; # v8
Reviewed-by: Hari Bathini &lt;hbathini@linux.ibm.com&gt; # powerpc jit
Reviewed-by: Pu Lehui &lt;pulehui@huawei.com&gt; # riscv jit
Acked-by: Hengqi Chen &lt;hengqi.chen@gmail.com&gt; # loongarch jit
Signed-off-by: Xu Kuohai &lt;xukuohai@huawei.com&gt;
Link: https://lore.kernel.org/r/20260416064341.151802-2-xukuohai@huaweicloud.com
Signed-off-by: Alexei Starovoitov &lt;ast@kernel.org&gt;

</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
During the JIT stage, constants blinding rewrites instructions but only
rewrites the private instruction copy of the JITed subprog, leaving the
global env-&gt;prog-&gt;insnsi and env-&gt;insn_aux_data untouched. This causes a
mismatch between subprog instructions and the global state, making it
difficult to use the global data in the JIT.

To avoid this mismatch, and given that all arch-specific JITs already
support constants blinding, move it to the generic verifier code, and
switch to rewrite the global env-&gt;prog-&gt;insnsi with the global states
adjusted, as other rewrites in the verifier do.

This removes the constants blinding calls in each JIT, which are largely
duplicated code across architectures.

Since constants blinding is only required for JIT, and there are two
JIT entry functions, jit_subprogs() for BPF programs with multiple
subprogs and bpf_prog_select_runtime() for programs with no subprogs,
move the constants blinding invocation into these two functions.

In the verifier path, bpf_patch_insn_data() is used to keep global
verifier auxiliary data in sync with patched instructions. A key
question is whether this global auxiliary data should be restored
on the failure path.

Besides instructions, bpf_patch_insn_data() adjusts:
  - prog-&gt;aux-&gt;poke_tab
  - env-&gt;insn_array_maps
  - env-&gt;subprog_info
  - env-&gt;insn_aux_data

For prog-&gt;aux-&gt;poke_tab, it is only used by JIT or only meaningful after
JIT succeeds, so it does not need to be restored on the failure path.

For env-&gt;insn_array_maps, when JIT fails, programs using insn arrays
are rejected by bpf_insn_array_ready() due to missing JIT addresses.
Hence, env-&gt;insn_array_maps is only meaningful for JIT and does not need
to be restored.

For subprog_info, if jit_subprogs fails and CONFIG_BPF_JIT_ALWAYS_ON
is not enabled, kernel falls back to interpreter. In this case,
env-&gt;subprog_info is used to determine subprogram stack depth. So it
must be restored on failure.

For env-&gt;insn_aux_data, it is freed by clear_insn_aux_data() at the
end of bpf_check(). Before freeing, clear_insn_aux_data() loops over
env-&gt;insn_aux_data to release jump targets recorded in it. The loop
uses env-&gt;prog-&gt;len as the array length, but this length no longer
matches the actual size of the adjusted env-&gt;insn_aux_data array after
constants blinding.

To address it, a simple approach is to keep insn_aux_data as adjusted
after failure, since it will be freed shortly, and record its actual size
for the loop in clear_insn_aux_data(). But since clear_insn_aux_data()
uses the same index to loop over both env-&gt;prog-&gt;insnsi and env-&gt;insn_aux_data,
this approach results in incorrect index for the insnsi array. So an
alternative approach is adopted: clone the original env-&gt;insn_aux_data
before blinding and restore it after failure, similar to env-&gt;prog.

For classic BPF programs, constants blinding works as before since it
is still invoked from bpf_prog_select_runtime().

Reviewed-by: Anton Protopopov &lt;a.s.protopopov@gmail.com&gt; # v8
Reviewed-by: Hari Bathini &lt;hbathini@linux.ibm.com&gt; # powerpc jit
Reviewed-by: Pu Lehui &lt;pulehui@huawei.com&gt; # riscv jit
Acked-by: Hengqi Chen &lt;hengqi.chen@gmail.com&gt; # loongarch jit
Signed-off-by: Xu Kuohai &lt;xukuohai@huawei.com&gt;
Link: https://lore.kernel.org/r/20260416064341.151802-2-xukuohai@huaweicloud.com
Signed-off-by: Alexei Starovoitov &lt;ast@kernel.org&gt;

</pre>
</div>
</content>
</entry>
</feed>
