dlm: fix user space lkb refcounting

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[ Upstream commit 2ab3d705ca ]

This patch fixes to check on the right return value if it was the last
callback. The rv variable got overwritten by the return of
copy_result_to_user(). Fixing it by introducing a second variable for
the return value and don't let rv being overwritten.

Cc: stable@vger.kernel.org
Fixes: 61bed0baa4 ("fs: dlm: use a non-static queue for callbacks")
Reported-by: Valentin Vidić <vvidic@valentin-vidic.from.hr>
Closes: https://lore.kernel.org/gfs2/Ze4qSvzGJDt5yxC3@valentin-vidic.from.hr
Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Alexander Aring 2024-03-12 13:05:07 -04:00 • committed by Greg Kroah-Hartman

parent b31301a1fa

commit 700ed41bf6

1 changed files with 5 additions and 5 deletions

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fs/dlm/user.c

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