linux-stable.git/tools, branch v5.15.211

kselftest/arm64: signal: Skip SVE signal test if not enough VLs supported

2026-07-04T11:39:37+00:00

[ Upstream commit 78c09c0f4df89fabdcfb3e5e53d3196cf67f64ef ]

On platform where SVE is supported but there are less than 2 VLs available
the signal SVE change test should be skipped instead of failing.

Reported-by: Andre Przywara 
Tested-by: Andre Przywara 
Cc: Mark Brown 
Signed-off-by: Cristian Marussi 
Reviewed-by: Mark Brown 
Link: https://lore.kernel.org/r/20220524103149.2802-1-cristian.marussi@arm.com
Signed-off-by: Catalin Marinas 
Signed-off-by: Yijia Wang 
Signed-off-by: Sasha Levin

Revert "ptp: add testptp mask test"

2026-07-04T11:39:37+00:00

This reverts commit 8510559c0fa1e228b18fcf77cfbcf5b970793a8a, which is
commit 26285e689c6cd2cf3849568c83b2ebe53f467143 upstream.

The reverted commit extends the selftest to test timestamp event queue mask
manipulation in testptp. It exercises masks PTP_MASK_CLEAR_ALL and
PTP_MASK_EN_SINGLE, introduced in commit c5a445b1e934 ("ptp: support event
queue reader channel masks"), which is not on this stable branch. The test
case thus cannot be built against this tree's own UAPI headers.

The reverted commit was introduced to resolve a missing dependency of
commit bef3a83a9a67 ("testptp: Add option to open PHC in readonly mode"),
which is 76868642e427 upstream. The only conflict between the two is the
getopt string, and there is otherwise no direct dependency between the two.

This patch therefore reverts the cited commit, with hand-resolving the
getopt string to include 'r' (as introduced by c6dc458227a3), but not
'F' (introduced by c1c50689799d).

Reported-by: Yong Wang 
Signed-off-by: Petr Machata 
Signed-off-by: Sasha Levin

Revert "selftest/ptp: update ptp selftest to exercise the gettimex options"

2026-07-04T11:39:37+00:00

This reverts commit 6b32d042aa8255e964ebed860e24adccb204fcbc, which is
commit 3d07b691ee707c00afaf365440975e81bb96cd9b upstream.

The cited commit allows testptp to set a configurable clock_id. That is
done via a PTP_SYS_OFFSET_EXTENDED ioctl call, whose argument is struct
ptp_sys_offset_extended, where the clock_id is set. However, this Linux
version does not support the ptp_sys_offset_extended.clockid field, and
the test case cannot be built against this tree's own UAPI headers.

The reverted commit was introduced to resolve a missing dependency of
commit bef3a83a9a67 ("testptp: Add option to open PHC in readonly mode"),
which is 76868642e427 upstream. My suspicion is that the only conflict
between the two is the getopt string, and there is otherwise no direct
dependency between the two.

This patch therefore reverts the cited commit, with hand-resolving the
getopt string to include 'r' (as introduced by c6dc458227a3), but not
'y' (introduced by 06954f715deb).

Reported-by: Yong Wang 
Signed-off-by: Petr Machata 
Signed-off-by: Sasha Levin

selftests: mptcp: drop nanoseconds width specifier

2026-06-19T11:33:46+00:00

[ Upstream commit 01ff78e4b3d98689184c52d97f9575dfbdc3b10f ]

Using the format specifier +%s%3N with GNU date is honoured, and only
prints 3 digits of the nanoseconds portion of the seconds since epoch,
which corresponds to the milliseconds.

The uutils implementation of date currently does not honour this, and
always prints all 9 digits. This is a known issue [1], but can be worked
around by adapting this test to use nanoseconds instead of microseconds,
and then divide it by 1e6.

This fix is similar to what has been done on systemd side [2], and it is
needed to run the selftests on Ubuntu 26.04, containing uutils 0.8.0.

Note that the Fixes tag is there even if this patch doesn't fix an issue
in the kernel selftests, but it is useful for those using uutils 0.8.0.

Fixes: 048d19d444be ("mptcp: add basic kselftest for mptcp")
Cc: stable@vger.kernel.org
Link: https://github.com/uutils/coreutils/issues/11658 [1]
Link: https://github.com/systemd/systemd/pull/41627 [2]
Signed-off-by: Matthieu Baerts (NGI0) 
Link: https://patch.msgid.link/20260515-net-mptcp-misc-fixes-7-1-rc4-v2-6-701e96419f2f@kernel.org
Signed-off-by: Paolo Abeni 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

selftests: forwarding: lib: Add helpers for checksum handling

2026-06-19T11:33:24+00:00

commit 952e0ee38c7215c45192d8c899acd1830873f28b upstream.

In order to generate IGMPv3 and MLDv2 packets on the fly, we will need
helpers to calculate the packet checksum.

The approach presented in this patch revolves around payload templates
for mausezahn. These are mausezahn-like payload strings (01:23:45:...)
with possibly one 2-byte sequence replaced with the word PAYLOAD. The
main function is payload_template_calc_checksum(), which calculates
RFC 1071 checksum of the message. There are further helpers to then
convert the checksum to the payload format, and to expand it.

For IPv6, MLDv2 message checksum is computed using a pseudoheader that
differs from the header used in the payload itself. The fact that the
two messages are different means that the checksum needs to be
returned as a separate quantity, instead of being expanded in-place in
the payload itself. Furthermore, the pseudoheader includes a length of
the message. Much like the checksum, this needs to be expanded in
mausezahn format. And likewise for number of addresses for (S,G)
entries. Thus we have several places where a computed quantity needs
to be presented in the payload format. Add a helper u16_to_bytes(),
which will be used in all these cases.

Signed-off-by: Petr Machata
Acked-by: Nikolay Aleksandrov
Signed-off-by: David S. Miller
Stable-dep-of: 02cb2e6bacbb ("selftests: forwarding: vxlan_bridge_1d: fix test failure with br_netfilter enabled")
[bwh: Backported to 5.15: adjust context]
Signed-off-by: Ben Hutchings
Signed-off-by: Sasha Levin

perf util: Kill die() prototype, dead for a long time

2026-06-01T15:35:35+00:00

[ Upstream commit e5cce1b9c82fbd48e2f1f7a25a9fad8ee228176f ]

In fef2a735167a827a ("perf tools: Kill die()") the die() function was
removed, but not the prototype in util.h, now when building with
LIBPERL=1, during a 'make -C tools/perf build-test' routine test, it is
failing as perl likes die() calls and then this clashes with this
remnant, remove it.

Fixes: fef2a735167a827a ("perf tools: Kill die()")
Reviewed-by: Ian Rogers 
Signed-off-by: Arnaldo Carvalho de Melo 
Signed-off-by: Namhyung Kim 
Signed-off-by: Sasha Levin

perf expr: Return -EINVAL for syntax error in expr__find_ids()

2026-06-01T15:35:35+00:00

[ Upstream commit 3a61fd866ef9aaa1d3158b460f852b74a2df07f4 ]

expr__find_ids() propagates the parser return value directly.  For syntax
errors, the parser can return a positive value, but callers treat it as
success, e.g., for below case on Arm64 platform:

  metric expr 100 * (STALL_SLOT_BACKEND / (CPU_CYCLES * #slots) - BR_MIS_PRED * 3 / CPU_CYCLES) for backend_bound
  parsing metric: 100 * (STALL_SLOT_BACKEND / (CPU_CYCLES * #slots) - BR_MIS_PRED * 3 / CPU_CYCLES)
  Failure to read '#slots' literal: #slots = nan
  syntax error

Convert positive parser returns in expr__find_ids() to -EINVAL, as a
result, the error value will be respected by callers.

Before:

  perf stat -C 5
  Failure to read '#slots'Failure to read '#slots'Failure to read '#slots'Failure to read '#slots'Segmentation fault

After:

  perf stat -C 5
  Failure to read '#slots'Cannot find metric or group `Default'

Fixes: ded80bda8bc9 ("perf expr: Migrate expr ids table to a hashmap")
Signed-off-by: Leo Yan 
Reviewed-by: Ian Rogers 
Signed-off-by: Namhyung Kim 
Signed-off-by: Sasha Levin

perf: tools: cs-etm: Fix print issue for Coresight debug in ETE/TRBE trace

2026-06-01T15:35:35+00:00

[ Upstream commit 6c478e7b3eba3f387a2d6c749e3e3ee0f8ad1c53 ]

Building perf with CORESIGHT=1 and the optional CSTRACE_RAW=1 enables
additional debug printing of raw trace data when using command:-
perf report --dump.

This raw trace prints the CoreSight formatted trace frames, which may be
used to investigate suspected issues with trace quality / corruption /
decode.

These frames are not present in ETE + TRBE trace.
This fix removes the unnecessary call to print these frames.

This fix also rationalises implementation - original code had helper
function that unnecessarily repeated initialisation calls that had
already been made.

Due to an addtional fault with the OpenCSD library, this call when ETE/TRBE
are being decoded will cause a segfault in perf. This fix also prevents
that problem for perf using older (<= 1.8.0 version) OpenCSD libraries.

Fixes: 68ffe3902898 ("perf tools: Add decoder mechanic to support dumping trace data")
Reported-by: Leo Yan 
Signed-off-by: Mike Leach 
Signed-off-by: Namhyung Kim 
Signed-off-by: Sasha Levin

perf branch: Avoid incrementing NULL

2026-06-01T15:35:35+00:00

[ Upstream commit c969a9d7bbf46f983c4a48566b3b2f7340b02296 ]

If the entry is NULL the value is meaningless so early return NULL to
avoid an increment of NULL. This was happening in calls from
has_stitched_lbr when running the "perf record LBR tests". The return
value isn't used in that case, so returning NULL as no effect.

Fixes: 42bbabed09ce ("perf tools: Add hw_idx in struct branch_stack")
Signed-off-by: Ian Rogers 
Signed-off-by: Namhyung Kim 
Signed-off-by: Sasha Levin

ktest: Run POST_KTEST hooks on failure and cancellation

2026-06-01T15:35:32+00:00

[ Upstream commit bc6e165a452da909cef0efbc286e6695624db372 ]

PRE_KTEST can be useful for setting up the environment and POST_KTEST to
tear it down, however POST_KTEST only runs on the normal end-of-run path.
It is skipped when ktest exits through dodie() or cancel_test(). Final
cleanup hooks are skipped.

Factor the final hook execution into run_post_ktest(), call it from the
normal exit path and from the early exit paths, and guard it so the hook
runs at most once.

Cc: John Hawley 
Cc: Andrea Righi 
Cc: Marcos Paulo de Souza 
Cc: Matthieu Baerts 
Cc: Fernando Fernandez Mancera 
Cc: Pedro Falcato 
Link: https://patch.msgid.link/20260307-ktest-fixes-v1-8-565d412f4925@suse.com
Fixes: 921ed4c7208e ("ktest: Add PRE/POST_KTEST and TEST options")
Signed-off-by: Ricardo B. Marlière 
Signed-off-by: Steven Rostedt 
Signed-off-by: Sasha Levin