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linux/fs/gfs2/log.c
Andreas Gruenbacher 74b4dbb946 gfs2: prevent NULL pointer dereference during unmount 
When flushing out outstanding glock work during an unmount, gfs2_log_flush()
can be called when sdp->sd_jdesc has already been deallocated and sdp->sd_jdesc
is NULL.  Commit 35264909e9 ("gfs2: Fix NULL pointer dereference in
gfs2_log_flush") added a check for that to gfs2_log_flush() itself, but it
missed the sdp->sd_jdesc dereference in gfs2_log_release().  Fix that.

Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <error27@gmail.com>
Closes: https://lore.kernel.org/r/202604071139.HNJiCaAi-lkp@intel.com/
Fixes: 35264909e9 ("gfs2: Fix NULL pointer dereference in gfs2_log_flush")
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2026-04-07 22:20:00 +02:00

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