ext4: fix null pointer dereference on sbi

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In the case of a kzalloc failure when allocating sbi we end up
with a null pointer dereference on sbi when assigning sbi->s_daxdev.
Fix this by moving the assignment of sbi->s_daxdev to after the
null pointer check of sbi.

Detected by CoverityScan CID#1455379 ("Dereference before null check")

Fixes: 5e405595e5 ("ext4: perform dax_device lookup at mount")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

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Colin Ian King 2017-09-05 17:51:23 +01:00 • committed by Dan Williams

parent 9edcad53d6

commit aed9eb1b21

1 changed files with 1 additions and 1 deletions

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fs/ext4/super.c

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