diff options
| author | Darrick J. Wong <djwong@kernel.org> | 2026-09-22 22:59:42 -0700 |
|---|---|---|
| committer | Carlos Maiolino <cem@kernel.org> | 2026-10-05 10:04:42 +0200 |
| commit | 329750292e9dfbb594b375d7b30cf5ddb58b7bb9 (patch) | |
| tree | 2d34df3a3c5c45932cd8b130d53b343d6448a925 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 23067b4f98f536ff3341fde04d52a331b2ebdf76 (diff) | |
xfarray: don't crash when sorting if array element crosses a folio
LOLLM points out that if an array element crosses a folio boundary,
xfile_get_folio returns a NULL folio pointer. If this happens,
si->folio is also set to NULL, and calling folio_pos/folio_address will
just crash the kernel. Teach this function to handle this condition by
falling back to reading the array element into scratchpad memory.
Cc: stable@vger.kernel.org # v6.6
Fixes: cf36f4f64c2d4e ("xfs: cache pages used for xfarray quicksort convergence")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Assisted-by: LOLLM # finding obvious bugs
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions