rseq: Update kernel fields in lockstep with CONFIG_DEBUG_RSEQ=y

Browse source

With CONFIG_DEBUG_RSEQ=y, an in-kernel copy of the read-only fields is
kept synchronized with the user-space fields. Ensure the updates are
done in lockstep in case we error out on a write to user-space.

Fixes: 7d5265ffcd ("rseq: Validate read-only fields under DEBUG_RSEQ config")
Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://lore.kernel.org/r/20250225202500.731245-1-mjeanson@efficios.com

...

This commit is contained in:

Michael Jeanson 2025-02-25 15:24:46 -05:00 • committed by Ingo Molnar

parent 3c27b40830

commit 79e10dad1c

1 changed files with 40 additions and 40 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

82

kernel/rseq.c

View file