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authorArtem Bityutskiy <artem.bityutskiy@linux.intel.com>2012-08-20 15:16:24 +0300
committerArtem Bityutskiy <artem.bityutskiy@linux.intel.com>2012-08-21 15:25:24 +0300
commit11e3be0be2a1314e0861304857e7efcaed5d3e54 (patch)
tree7d6590ea687c8cc0f22246bcdc3f2cb3de57174f /fs/ubifs/lpt.c
parent73e8712aa02d924844fbd5bd84a2445a1c3f68d7 (diff)
UBIFS: fix crash on error path
This patch fixes a regression introduced by "4994297 UBIFS: make ubifs_lpt_init clean-up in case of failure" which I've hit while running the 'integck -p' test. When remount the file-system from R/O mode to R/W mode and 'lpt_init_wr()' fails, we free _all_ LPT resources by calling 'ubifs_lpt_free(c, 0)', even those needed for R/O mode. This leads to subsequent crashes, e.g., if we try to unmount the file-system. Cc: stable@vger.kernel.org [v3.5+] Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Diffstat (limited to 'fs/ubifs/lpt.c')
-rw-r--r--fs/ubifs/lpt.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/ubifs/lpt.c b/fs/ubifs/lpt.c
index ce33b2beb151..8640920766ed 100644
--- a/fs/ubifs/lpt.c
+++ b/fs/ubifs/lpt.c
@@ -1749,7 +1749,10 @@ int ubifs_lpt_init(struct ubifs_info *c, int rd, int wr)
return 0;
out_err:
- ubifs_lpt_free(c, 0);
+ if (wr)
+ ubifs_lpt_free(c, 1);
+ if (rd)
+ ubifs_lpt_free(c, 0);
return err;
}