diff mbox series

[2/2] btrfs-progs: fuzz-tests: add image trigers abort of open_ctree()

Message ID 20191118055335.9927-2-Damenly_Su@gmx.com (mailing list archive)
State New, archived
Headers show
Series [1/2] btrfs-progs: block group: do not exclude bytenr adjacent to block group | expand

Commit Message

Su Yue Nov. 18, 2019, 5:53 a.m. UTC 
From: Su Yue <Damenly_Su@gmx.com>

This test case contains a bad block of dev tree and trigers abort while
open_ctree() due to its exquisite chunk layout. It can't be repaired
by fsck, so put it into fuzz-tests/images.

The image is provided by Ruud van Asseldonk. This commit just did xz
and writes the record.

Link: https://github.com/kdave/btrfs-progs/issues/210
Signed-off-by: Su Yue <Damenly_Su@gmx.com>
---
 .../images/bad-dev-tree-node.raw.txt          |  58 ++++++++++++++++++
 .../images/bad-dev-tree-node.raw.xz           | Bin 0 -> 18788 bytes
 2 files changed, 58 insertions(+)
 create mode 100644 tests/fuzz-tests/images/bad-dev-tree-node.raw.txt
 create mode 100644 tests/fuzz-tests/images/bad-dev-tree-node.raw.xz

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diff mbox series

Patch

diff --git a/tests/fuzz-tests/images/bad-dev-tree-node.raw.txt b/tests/fuzz-tests/images/bad-dev-tree-node.raw.txt
new file mode 100644
index 000000000000..64935568c7a6
--- /dev/null
+++ b/tests/fuzz-tests/images/bad-dev-tree-node.raw.txt
@@ -0,0 +1,58 @@ 
+URL: https://github.com/kdave/btrfs-progs/issues/210
+
+ruuda commented on Sep 24
+Running btrfs check on the attached minimal file system causes the following:
+
+Opening filesystem to check...
+extent_io.c:158: insert_state: BUG_ON `end < start` triggered, value 1
+btrfs(+0x2de57)[0x560c4d7cfe57]
+btrfs(+0x2e210)[0x560c4d7d0210]
+btrfs(set_extent_bits+0x254)[0x560c4d7d0854]
+btrfs(exclude_super_stripes+0xbf)[0x560c4d7c65ff]
+btrfs(btrfs_read_block_groups+0x29d)[0x560c4d7c698d]
+btrfs(btrfs_setup_all_roots+0x3f3)[0x560c4d7c0b23]
+btrfs(+0x1ef53)[0x560c4d7c0f53]
+btrfs(open_ctree_fs_info+0x90)[0x560c4d7c11a0]
+btrfs(+0x6d3f9)[0x560c4d80f3f9]
+btrfs(main+0x94)[0x560c4d7b60c4]
+/usr/lib/libc.so.6(__libc_start_main+0xf3)[0x7fd189773ee3]
+btrfs(_start+0x2e)[0x560c4d7b635e]
+zsh: abort (core dumped)  btrfs check /tmp/bad.btrfs
+Tested versions:
+
+v5.2.1 as shipped by Arch in 5.2.1-1
+v5.2.2 built from source (55a8c96)
+Data to reproduce:
+
+4a2d85625461bfed3cb60c53e5e913.zip
+
+GDB output:
+Starting program: /btrfs-progs/btrfs check bad-dev-tree-node.raw
+[Thread debugging using libthread_db enabled]
+Using host libthread_db library "/usr/lib/libthread_db.so.1".
+Opening filesystem to check...
+extent_io.c:158: insert_state: BUG_ON `end < start` triggered, value 1
+/btrfs-progs/btrfs(+0xa3fa8)[0x5555555f7fa8]
+/btrfs-progs/btrfs(+0xa4046)[0x5555555f8046]
+/btrfs-progs/btrfs(+0xa45f1)[0x5555555f85f1]
+/btrfs-progs/btrfs(set_extent_bits+0x83)[0x5555555f8c63]
+/btrfs-progs/btrfs(+0xbfb90)[0x555555613b90]
+/btrfs-progs/btrfs(exclude_super_stripes+0x1fc)[0x555555613de9]
+/btrfs-progs/btrfs(+0xbd85d)[0x55555561185d]
+/btrfs-progs/btrfs(btrfs_read_block_groups+0xd3)[0x5555556119f5]
+/btrfs-progs/btrfs(btrfs_setup_all_roots+0x454)[0x555555607740]
+/btrfs-progs/btrfs(+0xb4219)[0x555555608219]
+/btrfs-progs/btrfs(open_ctree_fs_info+0x177)[0x555555608415]
+/btrfs-progs/btrfs(+0x693dd)[0x5555555bd3dd]
+/btrfs-progs/btrfs(+0x14dc7)[0x555555568dc7]
+/btrfs-progs/btrfs(main+0x126)[0x555555569713]
+/usr/lib/libc.so.6(__libc_start_main+0xf3)[0x7ffff7a85153]
+/btrfs-progs/btrfs(_start+0x2e)[0x555555568cce]
+
+Program received signal SIGABRT, Aborted.
+0x00007ffff7a99f25 in raise () from /usr/lib/libc.so.6
+
+
+The compressed fuzz image causes above btrfsck abort.
+Fixed by commit "btrfs-progs: block group: do not exclude bytenr
+adjacent to block group".
diff --git a/tests/fuzz-tests/images/bad-dev-tree-node.raw.xz b/tests/fuzz-tests/images/bad-dev-tree-node.raw.xz
new file mode 100644
index 0000000000000000000000000000000000000000..a6e62106da03d81a2dbafa23f0c8082d75f82af0