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| author | Cheng-Yu Lee <cylee12@realtek.com> | 2026-01-09 11:26:33 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2026-01-12 12:25:29 +0000 |
| commit | 4b58aac989c1e3fafb1c68a733811859df388250 (patch) | |
| tree | c991b44dfe7e308234af45ac6f887a1f9d16e6eb /tools/perf/scripts/python/bin/stackcollapse-report | |
| parent | regmap: maple: free entry on mas_store_gfp() failure (diff) | |
| download | linux-4b58aac989c1e3fafb1c68a733811859df388250.tar.gz linux-4b58aac989c1e3fafb1c68a733811859df388250.zip | |
regmap: Fix race condition in hwspinlock irqsave routine
Previously, the address of the shared member '&map->spinlock_flags' was
passed directly to 'hwspin_lock_timeout_irqsave'. This creates a race
condition where multiple contexts contending for the lock could overwrite
the shared flags variable, potentially corrupting the state for the
current lock owner.
Fix this by using a local stack variable 'flags' to store the IRQ state
temporarily.
Fixes: 8698b9364710 ("regmap: Add hardware spinlock support")
Signed-off-by: Cheng-Yu Lee <cylee12@realtek.com>
Co-developed-by: Yu-Chun Lin <eleanor.lin@realtek.com>
Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com>
Link: https://patch.msgid.link/20260109032633.8732-1-eleanor.lin@realtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-report')
0 files changed, 0 insertions, 0 deletions