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| author |   Jeff Mahoney <jeffm@suse.com> | 2012-03-01 14:56:28 +0100 |
|---|---|---|
| committer |   David Sterba <dsterba@suse.cz> | 2012-03-22 01:45:32 +0100 |
| commit | 538042801a479ebd316582ad10a9c3156b5b7548 (patch) | |
| tree | 06582e3ca9e4d8a7c0c4117ee448bfda67b73092 /fs/btrfs | |
| parent | btrfs: clean_tree_block should panic on observed memory corruption and return void (diff) | |
| download | linux-dev-538042801a479ebd316582ad10a9c3156b5b7548.tar.xz linux-dev-538042801a479ebd316582ad10a9c3156b5b7548.zip | |
btrfs: avoid NULL deref in btrfs_reserve_extent with DEBUG_ENOSPC
__find_space_info can return NULL but we don't check it before calling
dump_space_info().
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Diffstat (limited to 'fs/btrfs')
| -rw-r--r-- | fs/btrfs/extent-tree.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 37e0a800d34e..c32a9bffe9e4 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -5838,7 +5838,8 @@ again: printk(KERN_ERR "btrfs allocation failed flags %llu, " "wanted %llu\n", (unsigned long long)data, (unsigned long long)num_bytes); - dump_space_info(sinfo, num_bytes, 1); + if (sinfo) + dump_space_info(sinfo, num_bytes, 1); } } |