- Bump up the Clang minimum version requirements
for livepatch builds, due to Clang assembler
section handling bugs causing silent
miscompilations.
- Strip livepatching symbol artifacts from
non-livepatch modules.
- Fix livepatch build warnings when certain
Clang LTO options are enabled.
- Fix livepatch build error when
CONFIG_MEM_ALLOC_PROFILING_DEBUG=y.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'objtool-urgent-2026-02-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool fixes from Ingo Molnar::
- Bump up the Clang minimum version requirements for livepatch
builds, due to Clang assembler section handling bugs causing
silent miscompilations
- Strip livepatching symbol artifacts from non-livepatch modules
- Fix livepatch build warnings when certain Clang LTO options
are enabled
- Fix livepatch build error when CONFIG_MEM_ALLOC_PROFILING_DEBUG=y
* tag 'objtool-urgent-2026-02-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
objtool/klp: Fix unexported static call key access for manually built livepatch modules
objtool/klp: Fix symbol correlation for orphaned local symbols
livepatch: Free klp_{object,func}_ext data after initialization
livepatch: Fix having __klp_objects relics in non-livepatch modules
livepatch/klp-build: Require Clang assembler >= 20
Enabling CONFIG_MEM_ALLOC_PROFILING_DEBUG with CONFIG_SAMPLE_LIVEPATCH
results in the following error:
samples/livepatch/livepatch-shadow-fix1.o: error: objtool: static_call: can't find static_call_key symbol: __SCK__WARN_trap
This is caused an extra file->klp sanity check which was added by commit
164c9201e1 ("objtool: Add base objtool support for livepatch
modules"). That check was intended to ensure that livepatch modules
built with klp-build always have full access to their static call keys.
However, it failed to account for the fact that manually built livepatch
modules (i.e., not built with klp-build) might need access to unexported
static call keys, for which read-only access is typically allowed for
modules.
While the livepatch-shadow-fix1 module doesn't explicitly use any static
calls, it does have a memory allocation, which can cause
CONFIG_MEM_ALLOC_PROFILING_DEBUG to insert a WARN() call. And WARN() is
now an unexported static call as of commit 860238af7a ("x86_64/bug:
Inline the UD1").
Fix it by removing the overzealous file->klp check, restoring the
original behavior for manually built livepatch modules.
Fixes: 164c9201e1 ("objtool: Add base objtool support for livepatch modules")
Reported-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Song Liu <song@kernel.org>
Tested-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/0bd3ae9a53c3d743417fe842b740a7720e2bcd1c.1770058775.git.jpoimboe@kernel.org
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
When compiling with CONFIG_LTO_CLANG_THIN, vmlinux.o has
__irf_[start|end] before the first FILE entry:
$ readelf -sW vmlinux.o
Symbol table '.symtab' contains 597706 entries:
Num: Value Size Type Bind Vis Ndx Name
0: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND
1: 0000000000000000 0 NOTYPE LOCAL DEFAULT 18 __irf_start
2: 0000000000000200 0 NOTYPE LOCAL DEFAULT 18 __irf_end
3: 0000000000000000 0 SECTION LOCAL DEFAULT 17 .text
4: 0000000000000000 0 SECTION LOCAL DEFAULT 18 .init.ramfs
This causes klp-build warnings like:
vmlinux.o: warning: objtool: no correlation: __irf_start
vmlinux.o: warning: objtool: no correlation: __irf_end
The problem is that Clang LTO is stripping the initramfs_data.o FILE
symbol, causing those two symbols to be orphaned and not noticed by
klp-diff's correlation logic. Add a loop to correlate any symbols found
before the first FILE symbol.
Fixes: dd590d4d57 ("objtool/klp: Introduce klp diff subcommand for diffing object files")
Reported-by: Song Liu <song@kernel.org>
Acked-by: Song Liu <song@kernel.org>
Link: https://patch.msgid.link/e21ec1141fc749b5f538d7329b531c1ab63a6d1a.1770055235.git.jpoimboe@kernel.org
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
The klp_object_ext and klp_func_ext data, which are stored in the
__klp_objects and __klp_funcs sections, respectively, are not needed
after they are used to create the actual klp_object and klp_func
instances. This operation is implemented by the init function in
scripts/livepatch/init.c.
Prefix the two sections with ".init" so they are freed after the module
is initializated.
Signed-off-by: Petr Pavlu <petr.pavlu@suse.com>
Acked-by: Joe Lawrence <joe.lawrence@redhat.com>
Acked-by: Miroslav Benes <mbenes@suse.cz>
Reviewed-by: Aaron Tomlin <atomlin@atomlin.com>
Link: https://patch.msgid.link/20260123102825.3521961-3-petr.pavlu@suse.com
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
- Fix a bug where AVIC is incorrectly inhibited when running with x2AVIC
disabled via module param (or on a system without x2AVIC).
- Fix a dangling device posted IRQs bug by explicitly checking if the irqfd is
still active (on the list) when handling an eventfd signal, instead of
zeroing the irqfd's routing information when the irqfd is deassigned.
Zeroing the irqfd's routing info causes arm64 and x86's to not disable
posting for the IRQ (kvm_arch_irq_bypass_del_producer() looks for an MSI),
incorrectly leaving the IRQ in posted mode (and leading to use-after-free
and memory leaks on AMD in particular).
This is both the most pressing and scariest, but it's been in -next for
a while.
- Disable FORTIFY_SOURCE for KVM selftests to prevent the compiler from
generating calls to the checked versions of memset() and friends, which
leads to unexpected page faults in guest code due e.g. __memset_chk@plt
not being resolved.
- Explicitly configure the support XSS from within {svm,vmx}_set_cpu_caps() to
fix a bug where VMX will compute the reference VMCS configuration with SHSTK
and IBT enabled, but then compute each CPUs local config with SHSTK and IBT
disabled if not all CET xfeatures are enabled, e.g. if the kernel is built
with X86_KERNEL_IBT=n. The mismatch in features results in differing nVMX
setting, and ultimately causes kvm-intel.ko to refuse to load with nested=1.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
- Fix a bug where AVIC is incorrectly inhibited when running with
x2AVIC disabled via module param (or on a system without x2AVIC)
- Fix a dangling device posted IRQs bug by explicitly checking if the
irqfd is still active (on the list) when handling an eventfd signal,
instead of zeroing the irqfd's routing information when the irqfd is
deassigned.
Zeroing the irqfd's routing info causes arm64 and x86's to not
disable posting for the IRQ (kvm_arch_irq_bypass_del_producer() looks
for an MSI), incorrectly leaving the IRQ in posted mode (and leading
to use-after-free and memory leaks on AMD in particular).
This is both the most pressing and scariest, but it's been in -next
for a while.
- Disable FORTIFY_SOURCE for KVM selftests to prevent the compiler from
generating calls to the checked versions of memset() and friends,
which leads to unexpected page faults in guest code due e.g.
__memset_chk@plt not being resolved.
- Explicitly configure the supported XSS capabilities from within
{svm,vmx}_set_cpu_caps() to fix a bug where VMX will compute the
reference VMCS configuration with SHSTK and IBT enabled, but then
compute each CPUs local config with SHSTK and IBT disabled if not all
CET xfeatures are enabled, e.g. if the kernel is built with
X86_KERNEL_IBT=n.
The mismatch in features results in differing nVMX setting, and
ultimately causes kvm-intel.ko to refuse to load with nested=1.
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: x86: Explicitly configure supported XSS from {svm,vmx}_set_cpu_caps()
KVM: selftests: Add -U_FORTIFY_SOURCE to avoid some unpredictable test failures
KVM: x86: Assert that non-MSI doesn't have bypass vCPU when deleting producer
KVM: Don't clobber irqfd routing type when deassigning irqfd
KVM: SVM: Check vCPU ID against max x2AVIC ID if and only if x2AVIC is enabled
- Fix a bug where AVIC is incorrectly inhibited when running with x2AVIC
disabled via module param (or on a system without x2AVIC).
- Fix a dangling device posted IRQs bug by explicitly checking if the irqfd is
still active (on the list) when handling an eventfd signal, instead of
zeroing the irqfd's routing information when the irqfd is deassigned.
Zeroing the irqfd's routing info causes arm64 and x86's to not disable
posting for the IRQ (kvm_arch_irq_bypass_del_producer() looks for an MSI),
incorrectly leaving the IRQ in posted mode (and leading to use-after-free
and memory leaks on AMD in particular).
- Disable FORTIFY_SOURCE for KVM selftests to prevent the compiler from
generating calls to the checked versions of memset() and friends, which
leads to unexpected page faults in guest code due e.g. __memset_chk@plt
not being resolved.
- Explicitly configure the support XSS from within {svm,vmx}_set_cpu_caps() to
fix a bug where VMX will compute the reference VMCS configuration with SHSTK
and IBT enabled, but then compute each CPUs local config with SHSTK and IBT
disabled if not all CET xfeatures are enabled, e.g. if the kernel is built
with X86_KERNEL_IBT=n. The mismatch in features results in differing nVMX
setting, and ultimately causes kvm-intel.ko to refuse to load with nested=1.
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Merge tag 'kvm-x86-fixes-6.19-rc8' of https://github.com/kvm-x86/linux into HEAD
Final KVM fixes for 6.19:
- Fix a bug where AVIC is incorrectly inhibited when running with x2AVIC
disabled via module param (or on a system without x2AVIC).
- Fix a dangling device posted IRQs bug by explicitly checking if the irqfd is
still active (on the list) when handling an eventfd signal, instead of
zeroing the irqfd's routing information when the irqfd is deassigned.
Zeroing the irqfd's routing info causes arm64 and x86's to not disable
posting for the IRQ (kvm_arch_irq_bypass_del_producer() looks for an MSI),
incorrectly leaving the IRQ in posted mode (and leading to use-after-free
and memory leaks on AMD in particular).
This is both the most pressing and scariest, but it's been in -next for
a while.
- Disable FORTIFY_SOURCE for KVM selftests to prevent the compiler from
generating calls to the checked versions of memset() and friends, which
leads to unexpected page faults in guest code due e.g. __memset_chk@plt
not being resolved.
- Explicitly configure the support XSS from within {svm,vmx}_set_cpu_caps() to
fix a bug where VMX will compute the reference VMCS configuration with SHSTK
and IBT enabled, but then compute each CPUs local config with SHSTK and IBT
disabled if not all CET xfeatures are enabled, e.g. if the kernel is built
with X86_KERNEL_IBT=n. The mismatch in features results in differing nVMX
setting, and ultimately causes kvm-intel.ko to refuse to load with nested=1.
We had a few patches in this area and no explicit coverage so far.
The test case covers the scenario addressed by the previous fix;
reusing the existing udpgro_fwd.sh script to leverage part of the
of the virtual network setup, even if such script is possibly not
a perfect fit.
Note that the mentioned script already contains several shellcheck
violation; this patch does not fix the existing code, just avoids
adding more issues in the new one.
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Link: https://patch.msgid.link/768ca132af81e83856e34d3105b86c37e566a7ad.1770032084.git.pabeni@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
- Fix a build error on ia32-x86_64 cross builds
- Replace locally open coded ALIGN_UP(), ALIGN_UP_POW2()
and MAX(), which, beyond being duplicates, the
ALIGN_UP_POW2() is also buggy.
- Fix objtool klp-diff regression caused by a recent
change to the bug table format.
- Fix klp-build vs CONFIG_MODULE_SRCVERSION_ALL build
failure.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'objtool-urgent-2026-02-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool fixes from Ingo Molnar:
- Fix a build error on ia32-x86_64 cross builds
- Replace locally open coded ALIGN_UP(), ALIGN_UP_POW2()
and MAX(), which, beyond being duplicates, the
ALIGN_UP_POW2() is also buggy
- Fix objtool klp-diff regression caused by a recent
change to the bug table format
- Fix klp-build vs CONFIG_MODULE_SRCVERSION_ALL build
failure
* tag 'objtool-urgent-2026-02-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
livepatch/klp-build: Fix klp-build vs CONFIG_MODULE_SRCVERSION_ALL
objtool/klp: Fix bug table handling for __WARN_printf()
objtool: Replace custom macros in elf.c with shared ones
objtool: Print bfd_vma as unsigned long long on ia32-x86_64 cross build
Toolchain and infrastructure:
- Trigger rebuilds of the newly added 'proc-macro2' crate (and its
dependencies) when the Rust compiler version changes.
- Fix error in '.rsi' targets (macro expanding single targets) under
'O=' pointing to an external (not subdir) folder.
- Fix off-by-one line number in 'rustdoc' KUnit tests.
- Add '-fdiagnostics-show-context' to GCC flags skipped by 'bindgen'.
- Clean objtool warning by adding one more 'noreturn' function.
- Clean 'libpin_init_internal.{so,dylib}' in 'mrproper'.
'kernel' crate:
- Fix build error when using expressions in formatting arguments.
- Mark 'num::Bounded::__new()' as unsafe and clean documentation
accordingly.
- Always inline functions using 'build_assert' with arguments.
- Fix 'rusttest' build error providing the right 'isize_atomic_repr'
type for the host.
'macros' crate:
- Fix 'rusttest' build error by ignoring example.
rust-analyzer:
- Remove assertion that was not true for distributions like NixOS.
- Add missing dependency edges and fix editions for 'quote' and
sysroot crates to provide correct IDE support.
DRM Tyr:
- Fix build error by adding missing dependency on 'CONFIG_COMMON_CLK'.
Plus clean a few typos in docs and comments.
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Merge tag 'rust-fixes-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux
Pull Rust fixes from Miguel Ojeda:
"Toolchain and infrastructure:
- Trigger rebuilds of the newly added 'proc-macro2' crate (and its
dependencies) when the Rust compiler version changes
- Fix error in '.rsi' targets (macro expanding single targets) under
'O=' pointing to an external (not subdir) folder
- Fix off-by-one line number in 'rustdoc' KUnit tests
- Add '-fdiagnostics-show-context' to GCC flags skipped by 'bindgen'
- Clean objtool warning by adding one more 'noreturn' function
- Clean 'libpin_init_internal.{so,dylib}' in 'mrproper'
'kernel' crate:
- Fix build error when using expressions in formatting arguments
- Mark 'num::Bounded::__new()' as unsafe and clean documentation
accordingly
- Always inline functions using 'build_assert' with arguments
- Fix 'rusttest' build error providing the right 'isize_atomic_repr'
type for the host
'macros' crate:
- Fix 'rusttest' build error by ignoring example
rust-analyzer:
- Remove assertion that was not true for distributions like NixOS
- Add missing dependency edges and fix editions for 'quote' and
sysroot crates to provide correct IDE support
DRM Tyr:
- Fix build error by adding missing dependency on 'CONFIG_COMMON_CLK'
Plus clean a few typos in docs and comments"
* tag 'rust-fixes-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux: (28 commits)
rust: num: bounded: clean __new documentation and comments
scripts: generate_rust_analyzer: fix resolution of #[pin_data] macros
drm/tyr: depend on `COMMON_CLK` to fix build error
rust: sync: atomic: Provide stub for `rusttest` 32-bit hosts
kbuild: rust: clean libpin_init_internal in mrproper
rust: proc-macro2: rebuild if the version text changes
rust: num: bounded: add missing comment for always inlined function
rust: sync: refcount: always inline functions using build_assert with arguments
rust: bits: always inline functions using build_assert with arguments
scripts: generate_rust_analyzer: compile sysroot with correct edition
scripts: generate_rust_analyzer: compile quote with correct edition
scripts: generate_rust_analyzer: quote: treat `core` and `std` as dependencies
scripts: generate_rust_analyzer: syn: treat `std` as a dependency
scripts: generate_rust_analyzer: remove sysroot assertion
rust: kbuild: give `--config-path` to `rustfmt` in `.rsi` target
scripts: generate_rust_analyzer: Add pin_init_internal deps
scripts: generate_rust_analyzer: Add pin_init -> compiler_builtins dep
scripts: generate_rust_analyzer: Add compiler_builtins -> core dep
rust: macros: ignore example with module parameters
rust: num: bounded: mark __new as unsafe
...
There are no known regressions currently under investigation.
Current release - fix to a fix:
- can: gs_usb_receive_bulk_callback(): fix error message
Current release - regressions:
- eth: gve: fix probe failure if clock read fails
Previous releases - regressions:
- ipv6: use the right ifindex when replying to icmpv6 from localhost
- mptcp: fix race in mptcp_pm_nl_flush_addrs_doit()
- bluetooth: fix null-ptr-deref in hci_uart_write_work
- eth: sfc: fix deadlock in RSS config read
- eth: ice: ifix NULL pointer dereference in ice_vsi_set_napi_queues
- eth: mlx5: fix memory leak in esw_acl_ingress_lgcy_setup()
Previous releases - always broken:
- core: fix segmentation of forwarding fraglist GRO
- wifi: mac80211: correctly decode TTLM with default link map
- mptcp: avoid dup SUB_CLOSED events after disconnect
- nfc: fix memleak in nfc_llcp_send_ui_frame().
- eth: bonding: fix use-after-free due to enslave fail
- eth: mlx5e:
- TC, delete flows only for existing peers
- fix inverted cap check in tx flow table root disconnect
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-6.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from bluetooth, CAN and wireless.
There are no known regressions currently under investigation.
Current release - fix to a fix:
- can: gs_usb_receive_bulk_callback(): fix error message
Current release - regressions:
- eth: gve: fix probe failure if clock read fails
Previous releases - regressions:
- ipv6: use the right ifindex when replying to icmpv6 from localhost
- mptcp: fix race in mptcp_pm_nl_flush_addrs_doit()
- bluetooth: fix null-ptr-deref in hci_uart_write_work
- eth:
- sfc: fix deadlock in RSS config read
- ice: ifix NULL pointer dereference in ice_vsi_set_napi_queues
- mlx5: fix memory leak in esw_acl_ingress_lgcy_setup()
Previous releases - always broken:
- core: fix segmentation of forwarding fraglist GRO
- wifi: mac80211: correctly decode TTLM with default link map
- mptcp: avoid dup SUB_CLOSED events after disconnect
- nfc: fix memleak in nfc_llcp_send_ui_frame().
- eth:
- bonding: fix use-after-free due to enslave fail
- mlx5e:
- TC, delete flows only for existing peers
- fix inverted cap check in tx flow table root disconnect"
* tag 'net-6.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (43 commits)
net: fix segmentation of forwarding fraglist GRO
wifi: mac80211: correctly decode TTLM with default link map
selftests: mptcp: join: fix local endp not being tracked
selftests: mptcp: check subflow errors in close events
mptcp: only reset subflow errors when propagated
selftests: mptcp: check no dup close events after error
mptcp: avoid dup SUB_CLOSED events after disconnect
net/mlx5e: Skip ESN replay window setup for IPsec crypto offload
net/mlx5: Fix vhca_id access call trace use before alloc
net/mlx5: fs, Fix inverted cap check in tx flow table root disconnect
net: phy: micrel: fix clk warning when removing the driver
net/mlx5e: don't assume psp tx skbs are ipv6 csum handling
net: bridge: fix static key check
nfc: nci: Fix race between rfkill and nci_unregister_device().
gve: fix probe failure if clock read fails
net/mlx5e: Account for netdev stats in ndo_get_stats64
net/mlx5e: TC, delete flows only for existing peers
net/mlx5: Fix Unbinding uplink-netdev in switchdev mode
ice: stop counting UDP csum mismatch as rx_errors
ice: Fix NULL pointer dereference in ice_vsi_set_napi_queues
...
When running this mptcp_join.sh selftest on older kernel versions not
supporting local endpoints tracking, this test fails because 3 MP_JOIN
ACKs have been received, while only 2 were expected.
It is not clear why only 2 MP_JOIN ACKs were expected on old kernel
versions, while 3 MP_JOIN SYN and SYN+ACK were expected. When testing on
the v5.15.197 kernel, 3 MP_JOIN ACKs are seen, which is also what is
expected in the selftests included in this kernel version, see commit
f4480eaad4 ("selftests: mptcp: add missing join check").
Switch the expected MP_JOIN ACKs to 3. While at it, move this
chk_join_nr helper out of the special condition for older kernel
versions as it is now the same as with more recent ones. Also, invert
the condition to be more logical: what's expected on newer kernel
versions having such helper first.
Fixes: d4c81bbb86 ("selftests: mptcp: join: support local endpoint being tracked or not")
Cc: stable@vger.kernel.org
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20260127-net-mptcp-dup-nl-events-v1-5-7f71e1bc4feb@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This validates the previous commit: subflow closed events should contain
an error field when a subflow got closed with an error, e.g. reset or
timeout.
For this test, the chk_evt_nr helper has been extended to check
attributes in the matched events.
In this test, the 2 subflow closed events should have an error.
The 'Fixes' tag here below is the same as the one from the previous
commit: this patch here is not fixing anything wrong in the selftests,
but it validates the previous fix for an issue introduced by this commit
ID.
Fixes: 15cc104533 ("mptcp: deliver ssk errors to msk")
Cc: stable@vger.kernel.org
Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20260127-net-mptcp-dup-nl-events-v1-4-7f71e1bc4feb@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This validates the previous commit: subflow closed events are re-sent
with less info when the initial subflow is disconnected after an error
and each time a subflow is closed after that.
In this new test, the userspace PM is involved because that's how it was
discovered, but it is not specific to it. The initial subflow is
terminated with a RESET, and that will cause the subflow disconnect.
Then, a new subflow is initiated, but also got rejected, which cause a
second subflow closed event, but not a third one.
While at it, in case of failure to get the expected amount of events,
the events are printed.
The 'Fixes' tag here below is the same as the one from the previous
commit: this patch here is not fixing anything wrong in the selftests,
but it validates the previous fix for an issue introduced by this commit
ID.
Fixes: d82809b6c5 ("mptcp: avoid duplicated SUB_CLOSED events")
Cc: stable@vger.kernel.org
Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20260127-net-mptcp-dup-nl-events-v1-2-7f71e1bc4feb@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Running objtool klp-diff on a changed function which uses WARN() can
fail with:
vmlinux.o: error: objtool: md_run+0x866: failed to convert reloc sym '__bug_table' to its proper format
The problem is that since commit 5b472b6e5b ("x86_64/bug: Implement
__WARN_printf()"), each __WARN_printf() call site now directly
references its bug table entry. klp-diff errors out when it can't
convert such section-based references to object symbols (because bug
table entries don't have symbols).
Luckily, klp-diff already has code to create symbols for bug table
entries. Move that code earlier, before function diffing.
Fixes: dd590d4d57 ("objtool/klp: Introduce klp diff subcommand for diffing object files")
Fixes: 5b472b6e5b ("x86_64/bug: Implement __WARN_printf()")
Reported-by: Song Liu <song@kernel.org>
Tested-by: Song Liu <song@kernel.org>
Link: https://patch.msgid.link/a8e0a714b9da962858842b9aecd63b4900927c88.1769406850.git.jpoimboe@kernel.org
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
The source file tools/objtool/elf.c defines the macros ALIGN_UP(),
ALIGN_UP_POW2() and MAX(). These macros unnecessarily duplicate
functionality already available under tools/include/, specifically ALIGN(),
roundup_pow_of_two() and max().
More importantly, the definition of ALIGN_UP_POW2() is incorrect when the
input is 1, as it results in a call to __builtin_clz(0), which produces an
undefined result. This issue impacts the function elf_alloc_reloc(). When
adding the first relocation to a section, the function allocates an
undefined number of relocations.
Replace the custom macros with the shared functionality to resolve these
issues.
Fixes: 2c05ca0262 ("objtool: Add elf_create_reloc() and elf_init_reloc()")
Signed-off-by: Petr Pavlu <petr.pavlu@suse.com>
Link: https://patch.msgid.link/20260126151356.3924887-1-petr.pavlu@suse.com
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
When objtool is cross-compiled in ia32 container for x86_64 target it
fails with the following errors:
> disas.c: In function 'disas_print_addr_sym':
> disas.c:173:38: error: format '%lx' expects argument of type 'long unsigned int', but argument 3 has type 'bfd_vma' {aka 'long long unsigned int'} [-Werror=format=]
> 173 | DINFO_FPRINTF(dinfo, "0x%lx <%s>", addr, symstr);
> | ^~~~~~~~~~~~ ~~~~
> | |
> | bfd_vma {aka long long unsigned int}
Provide a correct printf-fmt depending on sizeof(bfd_vma).
Fixes: 5d859dff26 ("objtool: Print symbol during disassembly")
Signed-off-by: Dmitry Safonov <dima@arista.com>
Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Link: https://patch.msgid.link/20260126-objtool-ia32-v1-1-bb6feaf17566@arista.com
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Test ipv6 pinging to local configured address and linklocal address from
localhost with -I ::1.
Signed-off-by: Fernando Fernandez Mancera <fmancera@suse.de>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://patch.msgid.link/20260121194409.6749-2-fmancera@suse.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
- Add $(DISABLE_KSTACK_ERASE) to vdso compile flags to fix compile errors
with old gcc versions
- Fix path to s390 chacha implementation in vdso selftests, after vdso64
has been renamed to vdso
- Fix off-by-one bug in APQN limit calculation
- Discard .modinfo section from decompressor image to fix SecureBoot
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Merge tag 's390-6.19-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Heiko Carstens:
- Add $(DISABLE_KSTACK_ERASE) to vdso compile flags to fix compile
errors with old gcc versions
- Fix path to s390 chacha implementation in vdso selftests, after
vdso64 has been renamed to vdso
- Fix off-by-one bug in APQN limit calculation
- Discard .modinfo section from decompressor image to fix SecureBoot
* tag 's390-6.19-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/boot/vmlinux.lds.S: Ensure bzImage ends with SecureBoot trailer
s390/ap: Fix wrong APQN fill calculation
selftests: vDSO: getrandom: Fix path to s390 chacha implementation
s390/vdso: Disable kstack erase
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Merge tag 'block-6.19-20260122' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull block fixes from Jens Axboe:
- A set of selftest fixes for ublk
- Fix for a pid mismatch in ublk, comparing PIDs in different
namespaces if run inside a namespace
- Fix for a regression added in this release with polling, where the
nvme tcp connect code would spin forever
- Zoned device error path fix
- Tweak the blkzoned uapi additions from this kernel release, making
them more easily discoverable
- Fix for a regression in bcache with bio endio handling added in this
release
* tag 'block-6.19-20260122' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
bcache: use bio cloning for detached device requests
blk-mq: use BLK_POLL_ONESHOT for synchronous poll completion
selftests/ublk: fix garbage output in foreground mode
selftests/ublk: fix error handling for starting device
selftests/ublk: fix IO thread idle check
block: make the new blkzoned UAPI constants discoverable
ublk: fix ublksrv pid handling for pid namespaces
block: Fix an error path in disk_update_zone_resources()
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Merge tag 'io_uring-6.19-20260122' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull io_uring fixes from Jens Axboe:
- Fix for a potential leak of an iovec, if a specific cleanup path is
used and the rw_cache is full at the time of the call
- Fix for a regression added in this cycle, where waitid should be
using prober release/acquire semantics for updating the wait queue
head
- Check for the cancelation bit being set for every work item processed
by io-wq, not just at the start of the loop. Has no real practical
implications other than to shut up syzbot doing crazy things that
grossly overload a system, hence slowing down ring exit
- A few selftest additions, updating the mini_liburing that selftests
use
* tag 'io_uring-6.19-20260122' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
selftests/io_uring: support NO_SQARRAY in miniliburing
selftests/io_uring: add io_uring_queue_init_params
io_uring/io-wq: check IO_WQ_BIT_EXIT inside work run loop
io_uring/waitid: fix KCSAN warning on io_waitid->head
io_uring/rw: free potentially allocated iovec on cache put failure
A collection of a few more small fixes for HD- and USB-audio,
including a regression fix for the OOB fix that was included in
the previous PR.
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Merge tag 'sound-6.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"A collection of a few more small fixes for HD- and USB-audio,
including a regression fix for the OOB fix that was included
in the previous pull request"
* tag 'sound-6.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda/realtek: ALC269 fixup for Lenovo Yoga Book 9i 13IRU8 audio
ALSA: hda/realtek: Add quirk for Samsung 730QED to fix headphone
ALSA: usb-audio: Use the right limit for PCM OOB check
ALSA: usb-audio: Fix use-after-free in snd_usb_mixer_free()
ALSA: hda/realtek: Fix headset mic for TongFang X6AR55xU
ALSA: ctxfi: Fix potential OOB access in audio mixer handling
selftests: ALSA: Remove unused variable in utimer-test
ALSA: usb-audio: Add delay quirk for MOONDROP Moonriver2 Ti
ALSA: scarlett2: Fix buffer overflow in config retrieval
ALSA: usb: Increase volume range that triggers a warning
Some distributions (such as Ubuntu) configure GCC so that
_FORTIFY_SOURCE is automatically enabled at -O1 or above. This results
in some fortified version of definitions of standard library functions
are included. While linker resolves the symbols, the fortified versions
might override the definitions in lib/string_override.c and reference to
those PLT entries in GLIBC. This is not a problem for the code in host,
but it is a disaster for the guest code. E.g., if build and run
x86/nested_emulation_test on Ubuntu 24.04 will encounter a L1 #PF due to
memset() reference to __memset_chk@plt.
The option -fno-builtin-memset is not helpful here, because those
fortified versions are not built-in but some definitions which are
included by header, they are for different intentions.
In order to eliminate the unpredictable behaviors may vary depending on
the linker and platform, add the "-U_FORTIFY_SOURCE" into CFLAGS to
prevent from introducing the fortified definitions.
Signed-off-by: Zhiquan Li <zhiquan_li@163.com>
Link: https://patch.msgid.link/20260122053551.548229-1-zhiquan_li@163.com
Fixes: 6b6f71484b ("KVM: selftests: Implement memcmp(), memcpy(), and memset() for guest use")
Cc: stable@vger.kernel.org
[sean: tag for stable]
Signed-off-by: Sean Christopherson <seanjc@google.com>
Pretty big PR, but hard to make up any cohesive story that would
explain it, a random collection of fixes. The two reverts of bad
patches from this release here feel like stuff that'd normally
show up by rc5 or rc6. Perhaps obvious thing to say, given the MW
timing.
That said, no active investigations / regressions. Let's see what
the next week brings.
Current release - fix to a fix:
- can: alloc_candev_mqs(): add missing default CAN capabilities
Current release - regressions:
- usbnet: fix crash due to missing BQL accounting after resume
- Revert "net: wwan: mhi_wwan_mbim: Avoid -Wflex-array-member-not ...
Previous releases - regressions:
- Revert "nfc/nci: Add the inconsistency check between the input ...
Previous releases - always broken:
- number of driver fixes for incorrect use of seqlocks on stats
- rxrpc: fix recvmsg() unconditional requeue, don't corrupt rcv queue
when MSG_PEEK was set
- ipvlan: make the addrs_lock be per port avoid races in the port
hash table
- sched: enforce that teql can only be used as root qdisc
- virtio: coalesce only linear skb
- wifi: ath12k: fix dead lock while flushing management frames
- eth: igc: reduce TSN TX packet buffer from 7KB to 5KB per queue
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from CAN and wireless.
Pretty big, but hard to make up any cohesive story that would explain
it, a random collection of fixes. The two reverts of bad patches from
this release here feel like stuff that'd normally show up by rc5 or
rc6. Perhaps obvious thing to say, given the holiday timing.
That said, no active investigations / regressions. Let's see what the
next week brings.
Current release - fix to a fix:
- can: alloc_candev_mqs(): add missing default CAN capabilities
Current release - regressions:
- usbnet: fix crash due to missing BQL accounting after resume
- Revert "net: wwan: mhi_wwan_mbim: Avoid -Wflex-array-member-not ...
Previous releases - regressions:
- Revert "nfc/nci: Add the inconsistency check between the input ...
Previous releases - always broken:
- number of driver fixes for incorrect use of seqlocks on stats
- rxrpc: fix recvmsg() unconditional requeue, don't corrupt rcv queue
when MSG_PEEK was set
- ipvlan: make the addrs_lock be per port avoid races in the port
hash table
- sched: enforce that teql can only be used as root qdisc
- virtio: coalesce only linear skb
- wifi: ath12k: fix dead lock while flushing management frames
- eth: igc: reduce TSN TX packet buffer from 7KB to 5KB per queue"
* tag 'net-6.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (96 commits)
Octeontx2-af: Add proper checks for fwdata
dpll: Prevent duplicate registrations
net/sched: act_ife: avoid possible NULL deref
hinic3: Fix netif_queue_set_napi queue_index input parameter error
vsock/test: add stream TX credit bounds test
vsock/virtio: cap TX credit to local buffer size
vsock/test: fix seqpacket message bounds test
vsock/virtio: fix potential underflow in virtio_transport_get_credit()
net: fec: account for VLAN header in frame length calculations
net: openvswitch: fix data race in ovs_vport_get_upcall_stats
octeontx2-af: Fix error handling
net: pcs: pcs-mtk-lynxi: report in-band capability for 2500Base-X
rxrpc: Fix data-race warning and potential load/store tearing
net: dsa: fix off-by-one in maximum bridge ID determination
net: bcmasp: Fix network filter wake for asp-3.0
bonding: provide a net pointer to __skb_flow_dissect()
selftests: net: amt: wait longer for connection before sending packets
be2net: Fix NULL pointer dereference in be_cmd_get_mac_from_list
Revert "net: wwan: mhi_wwan_mbim: Avoid -Wflex-array-member-not-at-end warning"
netrom: fix double-free in nr_route_frame()
...
Add a regression test for the TX credit bounds fix. The test verifies
that a sender with a small local buffer size cannot queue excessive
data even when the peer advertises a large receive buffer.
The client:
- Sets a small buffer size (64 KiB)
- Connects to server (which advertises 2 MiB buffer)
- Sends in non-blocking mode until EAGAIN
- Verifies total queued data is bounded
This guards against the original vulnerability where a remote peer
could cause unbounded kernel memory allocation by advertising a large
buffer and reading slowly.
Suggested-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Melbin K Mathew <mlbnkm1@gmail.com>
[Stefano: use sock_buf_size to check the bytes sent + small fixes]
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://patch.msgid.link/20260121093628.9941-5-sgarzare@redhat.com
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
The test requires the sender (client) to send all messages before waking
up the receiver (server).
Since virtio-vsock had a bug and did not respect the size of the TX
buffer, this test worked, but now that we are going to fix the bug, the
test hangs because the sender would fill the TX buffer before waking up
the receiver.
Set the buffer size in the sender (client) as well, as we already do for
the receiver (server).
Fixes: 5c338112e4 ("test/vsock: rework message bounds test")
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://patch.msgid.link/20260121093628.9941-3-sgarzare@redhat.com
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
A minor fix for error handling in the event parser.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
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Merge tag 'perf-tools-fixes-for-v6.19-2026-01-21' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools
Pull perf-tools fix from Namhyung Kim:
"A minor fix for error handling in the event parser"
* tag 'perf-tools-fixes-for-v6.19-2026-01-21' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools:
perf parse-events: Fix evsel allocation failure
Both send_mcast4() and send_mcast6() use sleep 2 to wait for the tunnel
connection between the gateway and the relay, and for the listener
socket to be created in the LISTENER namespace.
However, tests sometimes fail because packets are sent before the
connection is fully established.
Increase the waiting time to make the tests more reliable, and use
wait_local_port_listen() to explicitly wait for the listener socket.
Fixes: c08e8baea7 ("selftests: add amt interface selftest script")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Link: https://patch.msgid.link/20260120133930.863845-1-ap420073@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Commit 436326bc52 ("objtool: fix build failure due to missing libopcodes
check") tests for libopcodes using an empty main(), which passes even when
static libraries lack their dependencies. This causes undefined reference
errors (xmalloc, bfd_get_bits, etc.) when linking against static libopcodes
without its required libbfd and libiberty.
Fix by testing with an actual libopcodes symbol and trying increasingly
complete library combinations until one succeeds.
Fixes: 436326bc52 ("objtool: fix build failure due to missing libopcodes check")
Reported-by: Rafael J. Wysocki <rafael@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Rafael J. Wysocki (Intel) <rafael@kernel.org>
Link: https://patch.msgid.link/20260121162532.1596238-1-sashal@kernel.org
Add support for IORING_SETUP_NO_SQARRAY in miniliburing.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Add a ring init variant taking struct io_uring_params, which mimicks
liburing API.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Initialize _evtfd to -1 in struct dev_ctx to prevent garbage output
when running kublk in foreground mode. Without this, _evtfd is
zero-initialized to 0 (stdin), and ublk_send_dev_event() writes
binary data to stdin which appears as garbage on the terminal.
Also fix debug message format string.
Fixes: 6aecda00b7 ("selftests: ublk: add kernel selftests for ublk")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Caleb Sander Mateos <csander@purestorage.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Fix error handling in ublk_start_daemon() when start_dev fails:
1. Call ublk_ctrl_stop_dev() to cancel inflight uring_cmd before
cleanup. Without this, the device deletion may hang waiting for
I/O completion that will never happen.
2. Add fail_start label so that pthread_join() is called on the
error path. This ensures proper thread cleanup when startup fails.
Fixes: 6aecda00b7 ("selftests: ublk: add kernel selftests for ublk")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Caleb Sander Mateos <csander@purestorage.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Include cmd_inflight in ublk_thread_is_done() check. Without this,
the thread may exit before all FETCH commands are completed, which
may cause device deletion to hang.
Fixes: 6aecda00b7 ("selftests: ublk: add kernel selftests for ublk")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This tool is built by default, but was not being installed by default
when running `make install`. Fix this by calling ynltool's install
target.
Signed-off-by: Michel Lind <michel@michel-slm.name>
Link: https://patch.msgid.link/aWqr9gUT4hWZwwcI@mbp-m3-fedora.vm
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Blamed commit implemented logic to discover available vsock transports by
grepping /proc/kallsyms for known symbols. It incorrectly filtered entries
by type 'd'.
For some kernel configs having
CONFIG_VIRTIO_VSOCKETS=m
CONFIG_VSOCKETS_LOOPBACK=y
kallsyms reports
0000000000000000 d virtio_transport [vmw_vsock_virtio_transport]
0000000000000000 t loopback_transport
Overzealous filtering might have affected vsock test suit, resulting in
insufficient/misleading testing.
Do not filter symbols by type. It never helped much.
Fixes: 3070c05b7a ("vsock/test: Introduce get_transports()")
Signed-off-by: Michal Luczaj <mhal@rbox.co>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://patch.msgid.link/20260116-vsock_test-kallsyms-grep-v1-1-3320bc3346f2@rbox.co
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Add a selftest that attempts to add a teql qdisc as a qfq child.
Since teql _must_ be added as a root qdisc, the kernel should reject
this.
Signed-off-by: Victor Nogueira <victor@mojatatu.com>
Link: https://patch.msgid.link/20260114160243.913069-4-jhs@mojatatu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This is a simple ipvtap test to test handling
IP-address add/remove on ipvlan interface.
It creates a veth-interface and then creates several
network-namespace with ipvlan0 interface in it linked to veth.
Then it starts to add/remove addresses on ipvlan0 interfaces
in several threads.
At finish, it checks that there is no duplicated addresses.
Signed-off-by: Dmitry Skorodumov <skorodumov.dmitry@huawei.com>
Link: https://patch.msgid.link/20260112142417.4039566-3-skorodumov.dmitry@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The variable 'i' in wrong_timers_test() is declared but never used.
This was detected by Cppcheck static analysis.
tools/testing/selftests/alsa/utimer-test.c:144:9: style: Unused variable: i [unusedVariable]
Remove it to clean up the code and silence the warning.
Signed-off-by: LeeYongjun <jun85566@gmail.com>
Link: https://patch.msgid.link/20260118065510.29644-1-jun85566@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The s390 vDSO source directory was recently moved,
but this reference was not updated.
Fixes: c0087d807a ("s390/vdso: Rename vdso64 to vdso")
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
The previous change centralizing kselftest.h include path in lib.mk caused x86
selftests to fail, as x86 Makefile overwrites CFLAGS using ":=", dropping the
include path added in lib.mk. Therefore, helpers.h could not find kselftest.h
during compilation.
Fix this by adding the tools/testing/sefltest to CFLAGS in x86 Makefile.
[ bp: Correct commit ID in Fixes: ]
Fixes: e6fbd1759c ("selftests: complete kselftest include centralization")
Closes: https://lore.kernel.org/lkml/CA+G9fYvKjQcCBMfXA-z2YuL2L+3Qd-pJjEUDX8PDdz2-EEQd=Q@mail.gmail.com/T/#m83fd330231287fc9d6c921155bee16c591db7360
Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
Signed-off-by: Bala-Vignesh-Reddy <reddybalavignesh9979@gmail.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Tested-by: Anders Roxell <anders.roxell@linaro.org>
Tested-by: Brendan Jackman <jackmanb@google.com>
Link: https://patch.msgid.link/20251022062948.162852-1-reddybalavignesh9979@gmail.com
- Recognize all ZONE_DEVICE users as physaddr consumers
- Fix format string for extended_linear_cache_size_show()
- Fix target list setup for multiple decoders sharing the same
downstream port
- Restore HBIW check before derefernce platform data
- Fix potential infinite loop in __cxl_dpa_reserve()
- Check for invalid addresses returned from translation functions on
error.
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Merge tag 'cxl-fixes-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
Pull Compute Express Link (CXL) fixes from Dave Jiang:
- Recognize all ZONE_DEVICE users as physaddr consumers
- Fix format string for extended_linear_cache_size_show()
- Fix target list setup for multiple decoders sharing the same
downstream port
- Restore HBIW check before derefernce platform data
- Fix potential infinite loop in __cxl_dpa_reserve()
- Check for invalid addresses returned from translation functions on
error
* tag 'cxl-fixes-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl:
cxl: Check for invalid addresses returned from translation functions on errors
cxl/hdm: Fix potential infinite loop in __cxl_dpa_reserve()
cxl/acpi: Restore HBIW check before dereferencing platform_data
cxl/port: Fix target list setup for multiple decoders sharing the same dport
cxl/region: fix format string for resource_size_t
x86/kaslr: Recognize all ZONE_DEVICE users as physaddr consumers
Currently, the test breaks if the SUT already has a default route
configured for IPv6. Fix by avoiding the use of the default namespace.
Fixes: 4ed591c8ab ("net/ipv6: Allow onlink routes to have a device mismatch if it is the default route")
Suggested-by: Fernando Fernandez Mancera <fmancera@suse.de>
Signed-off-by: Ricardo B. Marlière <rbm@suse.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Fernando Fernandez Mancera <fmancera@suse.de>
Link: https://patch.msgid.link/20260113-selftests-net-fib-onlink-v2-1-89de2b931389@suse.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Loopback transport can mangle data in rx queue when a linear skb is
followed by a small MSG_ZEROCOPY packet.
To exercise the logic, send out two packets: a weirdly sized one (to ensure
some spare tail room in the skb) and a zerocopy one that's small enough to
fit in the spare room of its predecessor. Then, wait for both to land in
the rx queue, and check the data received. Faulty packets merger manifests
itself by corrupting payload of the later packet.
Signed-off-by: Michal Luczaj <mhal@rbox.co>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://patch.msgid.link/20260113-vsock-recv-coalescence-v2-2-552b17837cf4@rbox.co
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
- four kerneldoc fixes from Bagas Sanjaya
- four DAMON fixes from SeongJae
- four mremap VMA-related fixes from Lorenzo
- various singletons - please see the changelogs for details
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Merge tag 'mm-hotfixes-stable-2026-01-15-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc fixes from Andrew Morton:
- kerneldoc fixes from Bagas Sanjaya
- DAMON fixes from SeongJae
- mremap VMA-related fixes from Lorenzo
- various singletons - please see the changelogs for details
* tag 'mm-hotfixes-stable-2026-01-15-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (30 commits)
drivers/dax: add some missing kerneldoc comment fields for struct dev_dax
mm: numa,memblock: include <asm/numa.h> for 'numa_nodes_parsed'
mailmap: add entry for Daniel Thompson
tools/testing/selftests: fix gup_longterm for unknown fs
mm/page_alloc: prevent pcp corruption with SMP=n
iommu/sva: include mmu_notifier.h header
mm: kmsan: fix poisoning of high-order non-compound pages
tools/testing/selftests: add forked (un)/faulted VMA merge tests
mm/vma: enforce VMA fork limit on unfaulted,faulted mremap merge too
tools/testing/selftests: add tests for !tgt, src mremap() merges
mm/vma: fix anon_vma UAF on mremap() faulted, unfaulted merge
mm/zswap: fix error pointer free in zswap_cpu_comp_prepare()
mm/damon/sysfs-scheme: cleanup access_pattern subdirs on scheme dir setup failure
mm/damon/sysfs-scheme: cleanup quotas subdirs on scheme dir setup failure
mm/damon/sysfs: cleanup attrs subdirs on context dir setup failure
mm/damon/sysfs: cleanup intervals subdirs on attrs dir setup failure
mm/damon/core: remove call_control in inactive contexts
powerpc/watchdog: add support for hardlockup_sys_info sysctl
mips: fix HIGHMEM initialization
mm/hugetlb: ignore hugepage kernel args if hugepages are unsupported
...
