ceph: avoid putting the realm twice when decoding snaps fails

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When decoding the snaps fails it maybe leaving the 'first_realm'
and 'realm' pointing to the same snaprealm memory. And then it'll
put it twice and could cause random use-after-free, BUG_ON, etc
issues.

Cc: stable@vger.kernel.org
Link: https://tracker.ceph.com/issues/57686
Signed-off-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

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Xiubo Li 2022-11-09 11:00:39 +08:00 • committed by Ilya Dryomov

parent f86a48667b

commit 51884d153f

1 changed files with 2 additions and 1 deletions

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fs/ceph/snap.c

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