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| author | Boaz Harrosh <bharrosh@panasas.com> | 2012-05-16 14:22:21 +0300 |
|---|---|---|
| committer | Boaz Harrosh <bharrosh@panasas.com> | 2012-05-20 19:42:41 +0300 |
| commit | 6abe4a87f7bc7978705c386dbba0ca0c7790b3ec (patch) | |
| tree | 02f99246491cc2a76bdb592860537c63ee0ef480 /fs | |
| parent | 36be50515fe2aef61533b516fa2576a2c7fe7664 (diff) | |
| download | lwn-6abe4a87f7bc7978705c386dbba0ca0c7790b3ec.tar.gz lwn-6abe4a87f7bc7978705c386dbba0ca0c7790b3ec.zip | |
exofs: Fix CRASH on very early IO errors.
If at exofs_fill_super() we had an early termination
do to any error, like an IO error while reading the
super-block. We would crash inside exofs_free_sbi().
This is because sbi->oc.numdevs was set to 1, before
we actually have a device table at all.
Fix it by moving the sbi->oc.numdevs = 1 to after the
allocation of the device table.
Reported-by: Johannes Schild <JSchild@gmx.de>
Stable: This is a bug since v3.2.0
CC: Stable Tree <stable@kernel.org>
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/exofs/super.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/exofs/super.c b/fs/exofs/super.c index 735ca06430ac..59e0849772b7 100644 --- a/fs/exofs/super.c +++ b/fs/exofs/super.c @@ -745,7 +745,6 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent) sbi->one_comp.obj.partition = opts->pid; sbi->one_comp.obj.id = 0; exofs_make_credential(sbi->one_comp.cred, &sbi->one_comp.obj); - sbi->oc.numdevs = 1; sbi->oc.single_comp = EC_SINGLE_COMP; sbi->oc.comps = &sbi->one_comp; @@ -804,6 +803,7 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent) goto free_sbi; ore_comp_set_dev(&sbi->oc, 0, od); + sbi->oc.numdevs = 1; } __sbi_read_stats(sbi); |