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rseq: Fix rseq unregistration regression

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A logic inversion in rseq_reset_rseq_cpu_node_id() causes the rseq
unregistration to fail when rseq_validate_ro_fields() succeeds rather
than the opposite.

This affects both CONFIG_DEBUG_RSEQ=y and CONFIG_DEBUG_RSEQ=n.

Fixes: 7d5265ffcd ("rseq: Validate read-only fields under DEBUG_RSEQ config")
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20250116205956.836074-1-mathieu.desnoyers@efficios.com
This commit is contained in:
Mathieu Desnoyers 2025-01-16 15:59:56 -05:00 committed by Ingo Molnar
parent 7d9da04057
commit 40724ecafc
1 changed files with 1 additions and 1 deletions
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kernel/rseq.c
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@ -201,7 +201,7 @@ static int rseq_reset_rseq_cpu_node_id(struct task_struct *t)
/*
* Validate read-only rseq fields.
*/
if (!rseq_validate_ro_fields(t))
if (rseq_validate_ro_fields(t))
return -EFAULT;
/*
* Reset cpu_id_start to its initial state (0).