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| author | Michael Jeanson <mjeanson@efficios.com> | 2025-02-19 23:53:26 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2025-02-21 16:21:02 +0300 |
| commit | dc0a241ceaf3b7df6f1a7658b020c92682b75bfc (patch) | |
| tree | 2019cf9195d235456ef28aedd2988ae8c7be36a0 /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | 02d954c0fdf91845169cdacc7405b120f90afe01 (diff) | |
| download | linux-dc0a241ceaf3b7df6f1a7658b020c92682b75bfc.tar.xz | |
rseq: Fix rseq registration with CONFIG_DEBUG_RSEQ
With CONFIG_DEBUG_RSEQ=y, at rseq registration the read-only fields are
copied from user-space, if this copy fails the syscall returns -EFAULT
and the registration should not be activated - but it erroneously is.
Move the activation of the registration after the copy of the fields to
fix this bug.
Fixes: 7d5265ffcd8b ("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/20250219205330.324770-1-mjeanson@efficios.com
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions