6.13-stable review patch. If anyone has any objections, please let me know.
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From: Christian Brauner brauner@kernel.org
[ Upstream commit 95c54bc81791c210b131f2b1013942487e74896f ]
So we can easily convert revert_creds() callers over to drop the reference count explicitly.
Link: https://lore.kernel.org/r/20241125-work-cred-v2-2-68b9d38bb5b2@kernel.org Reviewed-by: Jeff Layton jlayton@kernel.org Reviewed-by: Jens Axboe axboe@kernel.dk Signed-off-by: Christian Brauner brauner@kernel.org Stable-dep-of: e04918dc5946 ("cred: Fix RCU warnings in override/revert_creds") Signed-off-by: Sasha Levin sashal@kernel.org --- include/linux/cred.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/include/linux/cred.h b/include/linux/cred.h index e4a3155fe409d..382768a9707b5 100644 --- a/include/linux/cred.h +++ b/include/linux/cred.h @@ -185,9 +185,12 @@ static inline const struct cred *override_creds_light(const struct cred *overrid return old; }
-static inline void revert_creds_light(const struct cred *revert_cred) +static inline const struct cred *revert_creds_light(const struct cred *revert_cred) { + const struct cred *override_cred = current->cred; + rcu_assign_pointer(current->cred, revert_cred); + return override_cred; }
/**