diff options
Diffstat (limited to 'tests/fuzz-tests/images/bko-97031-invalid-stripe-len-sys-array.raw.txt')
| -rw-r--r-- | tests/fuzz-tests/images/bko-97031-invalid-stripe-len-sys-array.raw.txt | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/tests/fuzz-tests/images/bko-97031-invalid-stripe-len-sys-array.raw.txt b/tests/fuzz-tests/images/bko-97031-invalid-stripe-len-sys-array.raw.txt new file mode 100644 index 00000000..2dc51b21 --- /dev/null +++ b/tests/fuzz-tests/images/bko-97031-invalid-stripe-len-sys-array.raw.txt @@ -0,0 +1,58 @@ +URL: https://bugzilla.kernel.org/show_bug.cgi?id=97031 +Lukas Lueg 2015-04-21 21:47:18 UTC + +The btrfs-image attached to this bug causes the userland tools v3.19.1 to crash +with a SIGFPE. The problem is that map->stripe_len in __btrfs_map_block() is +allowed to be 0 before entering a division. + +The userland tool crashes. +The kernel fails to mount with +> BTRFS: failed to read the system array on loop0 +> BTRFS: open_ctree_failed + + + +(gdb) run check btrfs_fukked_sigfpe_volumes:1372.bin +.... +warning, device 0 is missing +warning, device 4294967295 is missing +warning, device 0 is missing +warning, device 0 is missing +warning, device 0 is missing +warning, device 0 is missing +warning, device 4294967295 is missing + +Program received signal SIGFPE, Arithmetic exception. +0x000000000044d56f in __btrfs_map_block (map_tree=map_tree@entry=0x88c170, + rw=rw@entry=0, logical=<optimized out>, length=length@entry=0x7fffffffd8f0, + type=type@entry=0x0, multi_ret=multi_ret@entry=0x7fffffffd8e8, mirror_num=0, + raid_map_ret=0x0) at volumes.c:1372 +1372 stripe_nr = stripe_nr / map->stripe_len; +(gdb) bt +#0 0x000000000044d56f in __btrfs_map_block (map_tree=map_tree@entry=0x88c170, + rw=rw@entry=0, logical=<optimized out>, length=length@entry=0x7fffffffd8f0, + type=type@entry=0x0, multi_ret=multi_ret@entry=0x7fffffffd8e8, mirror_num=0, + raid_map_ret=0x0) at volumes.c:1372 +#1 0x000000000044db45 in btrfs_map_block (map_tree=map_tree@entry=0x88c170, + rw=rw@entry=0, logical=<optimized out>, length=length@entry=0x7fffffffd8f0, + multi_ret=multi_ret@entry=0x7fffffffd8e8, mirror_num=mirror_num@entry=0, + raid_map_ret=0x0) at volumes.c:1291 +#2 0x000000000043b22d in read_whole_eb (info=0x88c010, eb=eb@entry=0x88f400, + mirror=mirror@entry=0) at disk-io.c:232 +#3 0x000000000043caa2 in read_tree_block (root=root@entry=0x88c710, + bytenr=<optimized out>, blocksize=<optimized out>, parent_transid=5) + at disk-io.c:295 +#4 0x000000000043d5df in btrfs_setup_chunk_tree_and_device_map ( + fs_info=fs_info@entry=0x88c010) at disk-io.c:1106 +#5 0x000000000043d7d1 in __open_ctree_fd (fp=fp@entry=3, + path=path@entry=0x7fffffffe1fa "btrfs_fukked_sigfpe_volumes:1372.bin", + sb_bytenr=65536, sb_bytenr@entry=0, root_tree_bytenr=root_tree_bytenr@entry=0, + flags=flags@entry=OPEN_CTREE_EXCLUSIVE) at disk-io.c:1190 +#6 0x000000000043d965 in open_ctree_fs_info ( + filename=0x7fffffffe1fa "btrfs_fukked_sigfpe_volumes:1372.bin", + sb_bytenr=sb_bytenr@entry=0, root_tree_bytenr=root_tree_bytenr@entry=0, + flags=flags@entry=OPEN_CTREE_EXCLUSIVE) at disk-io.c:1231 +#7 0x0000000000427bf5 in cmd_check (argc=1, argv=0x7fffffffde90) at cmds-check.c:9326 +#8 0x000000000040e5a2 in main (argc=2, argv=0x7fffffffde90) at btrfs.c:245 +(gdb) p map->stripe_len +$1 = 0 |