tracing: Fix ignored return value of resize_buffer_duplicate_size()

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When tr->allocated_snapshot is true, resize_buffer_duplicate_size() is
called to update the snapshot buffer size. However, its return value was
not checked. In case of a failed resize this could lead next snapshot
being incomplete.

Add resize_buffer_duplicate_size() result check and return error if
resize fails.

Compile tested only.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260928152634.4354-1-d.kandybka@gmail.com
Fixes: 180e4e3909 ("tracing: Add snapshot refcount")
Signed-off-by: Dmitry Kandybka <d.kandybka@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

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Dmitry Kandybka 2026-09-28 18:26:32 +03:00 • committed by Steven Rostedt

parent 89bab1dba8

commit 3110d09bb9

1 changed files with 4 additions and 1 deletions

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kernel/trace/trace_snapshot.c

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