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| author | Josef Bacik <jbacik@fusionio.com> | 2013-03-29 15:09:34 +0100 |
|---|---|---|
| committer | Chris Mason <chris.mason@fusionio.com> | 2013-03-29 15:18:59 +0100 |
| commit | d8fe29e9dea8d7d61fd140d8779326856478fc62 (patch) | |
| tree | fb5867b3c130d23305a2fec87eed49708d5e7cdc /fs/btrfs/scrub.c | |
| parent | Btrfs: fix wrong return value of btrfs_lookup_csum() (diff) | |
| download | linux-d8fe29e9dea8d7d61fd140d8779326856478fc62.tar.xz linux-d8fe29e9dea8d7d61fd140d8779326856478fc62.zip | |
Btrfs: don't drop path when printing out tree errors in scrub
A user reported a panic where we were panicing somewhere in
tree_backref_for_extent from scrub_print_warning. He only captured the trace
but looking at scrub_print_warning we drop the path right before we mess with
the extent buffer to print out a bunch of stuff, which isn't right. So fix this
by dropping the path after we use the eb if we need to. Thanks,
Cc: stable@vger.kernel.org
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
Diffstat (limited to 'fs/btrfs/scrub.c')
| -rw-r--r-- | fs/btrfs/scrub.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index 53c3501fa4ca..85e072b956d5 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -542,7 +542,6 @@ static void scrub_print_warning(const char *errstr, struct scrub_block *sblock) eb = path->nodes[0]; ei = btrfs_item_ptr(eb, path->slots[0], struct btrfs_extent_item); item_size = btrfs_item_size_nr(eb, path->slots[0]); - btrfs_release_path(path); if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) { do { @@ -558,7 +557,9 @@ static void scrub_print_warning(const char *errstr, struct scrub_block *sblock) ret < 0 ? -1 : ref_level, ret < 0 ? -1 : ref_root); } while (ret != 1); + btrfs_release_path(path); } else { + btrfs_release_path(path); swarn.path = path; swarn.dev = dev; iterate_extent_inodes(fs_info, found_key.objectid, |