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gfs2: Silence possible null pointer dereference warning

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In gfs2_rbm_find, rs is always NULL when minext is NULL, so
gfs2_reservation_check_and_update will never be called on a NULL minext.
This isn't innediately obvious though, so also check for a NULL minext
for better code readability.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
This commit is contained in:
Andreas Gruenbacher 2021-04-02 19:51:24 +02:00
parent 6d8da302ae
commit bea906ee16
1 changed files with 1 additions and 1 deletions
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2
fs/gfs2/rgrp.c
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@ -1783,7 +1783,7 @@ static int gfs2_rbm_find(struct gfs2_rbm *rbm, u8 state, u32 *minext,
goto next_bitmap;
}
rbm->offset = offset;
if (!rs)
if (!rs || !minext)
return 0;
ret = gfs2_reservation_check_and_update(rbm, rs, *minext,