diff options
Diffstat (limited to 'tests/fsck-tests/015-check-bad-memory-access')
| -rw-r--r-- | tests/fsck-tests/015-check-bad-memory-access/bko-97171-btrfs-image.raw.txt | 254 | ||||
| -rw-r--r-- | tests/fsck-tests/015-check-bad-memory-access/bko-97171-btrfs-image.raw.xz | bin | 0 -> 6748 bytes |
2 files changed, 254 insertions, 0 deletions
diff --git a/tests/fsck-tests/015-check-bad-memory-access/bko-97171-btrfs-image.raw.txt b/tests/fsck-tests/015-check-bad-memory-access/bko-97171-btrfs-image.raw.txt new file mode 100644 index 00000000..9685ed46 --- /dev/null +++ b/tests/fsck-tests/015-check-bad-memory-access/bko-97171-btrfs-image.raw.txt @@ -0,0 +1,254 @@ +URL: https://bugzilla.kernel.org/show_bug.cgi?id=97171 + +The btrfs-image attached to this bug causes the btrfs-userland tool to use +uninitialized memory and ultimately overwrite what seems to be arbitrary memory +locations, dying in the process. Reproduced on x86-64 and i686. + +The kernel seems to be less affected and fails to mount the image. If +/usr/sbin/btrfs is not setuid (which it probably never is), things should be +safe. I didn't investigate further though. + +gdb output: + +GNU gdb (GDB) Fedora 7.8.2-38.fc21 +[... lots of other errors...] +Ignoring transid failure +root 5 inode 260 errors 1000, some csum missing + unresolved ref dir 256 index 7 namelen 5 name b.bin filetype 1 errors 2, no dir index + unresolved ref dir 256 index 7 namelen 5 name b.fin filetype 1 errors 5, no dir item, no inode ref +root 5 inode 261 errors 200, dir isize wrong + +Program received signal SIGSEGV, Segmentation fault. +0x000000000089bb70 in ?? () +(gdb) bt +#0 0x000000000089bb70 in ?? () +#1 0x00007fffffffdb50 in ?? () +#2 0x0000000000894b20 in ?? () +#3 0x00000032629b88e0 in _IO_2_1_stdout_ () from /lib64/libc.so.6 +#4 0x000000000088c010 in ?? () +#5 0x0000000000000000 in ?? () + + +valgrind output: + +[...lots of errors...] +==12638== Conditional jump or move depends on uninitialised value(s) +==12638== at 0x436E77: check_block.part.14 (ctree.c:548) +==12638== by 0x438954: UnknownInlinedFun (kerncompat.h:91) +==12638== by 0x438954: btrfs_search_slot (ctree.c:1120) +==12638== by 0x40DD1F: count_csum_range (cmds-check.c:1419) +==12638== by 0x40DD1F: process_file_extent (cmds-check.c:1551) +==12638== by 0x40DD1F: process_one_leaf (cmds-check.c:1617) +==12638== by 0x40DD1F: walk_down_tree (cmds-check.c:1742) +==12638== by 0x40DD1F: check_fs_root (cmds-check.c:3380) +==12638== by 0x40DD1F: check_fs_roots.isra.51 (cmds-check.c:3516) +==12638== by 0x4C64B0F: ??? +==12638== by 0x4C30A2F: ??? +==12638== by 0x4C468CF: ??? +==12638== by 0x32629B88DF: ??? (in /usr/lib64/libc-2.20.so) +==12638== by 0x4C3657F: ??? +==12638== +==12638== Conditional jump or move depends on uninitialised value(s) +==12638== at 0x4A0B0E7: memcpy@@GLIBC_2.14 (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) +==12638== by 0x436E99: UnknownInlinedFun (ctree.h:1613) +==12638== by 0x436E99: check_block.part.14 (ctree.c:550) +==12638== by 0x438954: UnknownInlinedFun (kerncompat.h:91) +==12638== by 0x438954: btrfs_search_slot (ctree.c:1120) +==12638== by 0x40DD1F: count_csum_range (cmds-check.c:1419) +==12638== by 0x40DD1F: process_file_extent (cmds-check.c:1551) +==12638== by 0x40DD1F: process_one_leaf (cmds-check.c:1617) +==12638== by 0x40DD1F: walk_down_tree (cmds-check.c:1742) +==12638== by 0x40DD1F: check_fs_root (cmds-check.c:3380) +==12638== by 0x40DD1F: check_fs_roots.isra.51 (cmds-check.c:3516) +==12638== by 0x4C64B0F: ??? +==12638== by 0x4C30A2F: ??? +==12638== by 0x4C468CF: ??? +==12638== by 0x32629B88DF: ??? (in /usr/lib64/libc-2.20.so) +==12638== by 0x4C3657F: ??? +==12638== +==12638== Conditional jump or move depends on uninitialised value(s) +==12638== at 0x4A0B2AC: memcpy@@GLIBC_2.14 (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) +==12638== by 0x436E99: UnknownInlinedFun (ctree.h:1613) +==12638== by 0x436E99: check_block.part.14 (ctree.c:550) +==12638== by 0x438954: UnknownInlinedFun (kerncompat.h:91) +==12638== by 0x438954: btrfs_search_slot (ctree.c:1120) +==12638== by 0x40DD1F: count_csum_range (cmds-check.c:1419) +==12638== by 0x40DD1F: process_file_extent (cmds-check.c:1551) +==12638== by 0x40DD1F: process_one_leaf (cmds-check.c:1617) +==12638== by 0x40DD1F: walk_down_tree (cmds-check.c:1742) +==12638== by 0x40DD1F: check_fs_root (cmds-check.c:3380) +==12638== by 0x40DD1F: check_fs_roots.isra.51 (cmds-check.c:3516) +==12638== by 0x4C64B0F: ??? +==12638== by 0x4C30A2F: ??? +==12638== by 0x4C468CF: ??? +==12638== by 0x32629B88DF: ??? (in /usr/lib64/libc-2.20.so) +==12638== by 0x4C3657F: ??? +==12638== +==12638== Conditional jump or move depends on uninitialised value(s) +==12638== at 0x4A0B151: memcpy@@GLIBC_2.14 (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) +==12638== by 0x436E99: UnknownInlinedFun (ctree.h:1613) +==12638== by 0x436E99: check_block.part.14 (ctree.c:550) +==12638== by 0x438954: UnknownInlinedFun (kerncompat.h:91) +==12638== by 0x438954: btrfs_search_slot (ctree.c:1120) +==12638== by 0x40DD1F: count_csum_range (cmds-check.c:1419) +==12638== by 0x40DD1F: process_file_extent (cmds-check.c:1551) +==12638== by 0x40DD1F: process_one_leaf (cmds-check.c:1617) +==12638== by 0x40DD1F: walk_down_tree (cmds-check.c:1742) +==12638== by 0x40DD1F: check_fs_root (cmds-check.c:3380) +==12638== by 0x40DD1F: check_fs_roots.isra.51 (cmds-check.c:3516) +==12638== by 0x4C64B0F: ??? +==12638== by 0x4C30A2F: ??? +==12638== by 0x4C468CF: ??? +==12638== by 0x32629B88DF: ??? (in /usr/lib64/libc-2.20.so) +==12638== by 0x4C3657F: ??? +==12638== +==12638== Conditional jump or move depends on uninitialised value(s) +==12638== at 0x4A0B162: memcpy@@GLIBC_2.14 (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) +==12638== by 0x436E99: UnknownInlinedFun (ctree.h:1613) +==12638== by 0x436E99: check_block.part.14 (ctree.c:550) +==12638== by 0x438954: UnknownInlinedFun (kerncompat.h:91) +==12638== by 0x438954: btrfs_search_slot (ctree.c:1120) +==12638== by 0x40DD1F: count_csum_range (cmds-check.c:1419) +==12638== by 0x40DD1F: process_file_extent (cmds-check.c:1551) +==12638== by 0x40DD1F: process_one_leaf (cmds-check.c:1617) +==12638== by 0x40DD1F: walk_down_tree (cmds-check.c:1742) +==12638== by 0x40DD1F: check_fs_root (cmds-check.c:3380) +==12638== by 0x40DD1F: check_fs_roots.isra.51 (cmds-check.c:3516) +==12638== by 0x4C64B0F: ??? +==12638== by 0x4C30A2F: ??? +==12638== by 0x4C468CF: ??? +==12638== by 0x32629B88DF: ??? (in /usr/lib64/libc-2.20.so) +==12638== by 0x4C3657F: ??? +==12638== +==12638== Conditional jump or move depends on uninitialised value(s) +==12638== at 0x4A0B176: memcpy@@GLIBC_2.14 (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) +==12638== by 0x436E99: UnknownInlinedFun (ctree.h:1613) +==12638== by 0x436E99: check_block.part.14 (ctree.c:550) +==12638== by 0x438954: UnknownInlinedFun (kerncompat.h:91) +==12638== by 0x438954: btrfs_search_slot (ctree.c:1120) +==12638== by 0x40DD1F: count_csum_range (cmds-check.c:1419) +==12638== by 0x40DD1F: process_file_extent (cmds-check.c:1551) +==12638== by 0x40DD1F: process_one_leaf (cmds-check.c:1617) +==12638== by 0x40DD1F: walk_down_tree (cmds-check.c:1742) +==12638== by 0x40DD1F: check_fs_root (cmds-check.c:3380) +==12638== by 0x40DD1F: check_fs_roots.isra.51 (cmds-check.c:3516) +==12638== by 0x4C64B0F: ??? +==12638== by 0x4C30A2F: ??? +==12638== by 0x4C468CF: ??? +==12638== by 0x32629B88DF: ??? (in /usr/lib64/libc-2.20.so) +==12638== by 0x4C3657F: ??? +==12638== +==12638== Conditional jump or move depends on uninitialised value(s) +==12638== at 0x4A0B2CE: memcpy@@GLIBC_2.14 (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) +==12638== by 0x436E99: UnknownInlinedFun (ctree.h:1613) +==12638== by 0x436E99: check_block.part.14 (ctree.c:550) +==12638== by 0x438954: UnknownInlinedFun (kerncompat.h:91) +==12638== by 0x438954: btrfs_search_slot (ctree.c:1120) +==12638== by 0x40DD1F: count_csum_range (cmds-check.c:1419) +==12638== by 0x40DD1F: process_file_extent (cmds-check.c:1551) +==12638== by 0x40DD1F: process_one_leaf (cmds-check.c:1617) +==12638== by 0x40DD1F: walk_down_tree (cmds-check.c:1742) +==12638== by 0x40DD1F: check_fs_root (cmds-check.c:3380) +==12638== by 0x40DD1F: check_fs_roots.isra.51 (cmds-check.c:3516) +==12638== by 0x4C64B0F: ??? +==12638== by 0x4C30A2F: ??? +==12638== by 0x4C468CF: ??? +==12638== by 0x32629B88DF: ??? (in /usr/lib64/libc-2.20.so) +==12638== by 0x4C3657F: ??? +==12638== +==12638== Conditional jump or move depends on uninitialised value(s) +==12638== at 0x4A0B34A: memcpy@@GLIBC_2.14 (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) +==12638== by 0x436E99: UnknownInlinedFun (ctree.h:1613) +==12638== by 0x436E99: check_block.part.14 (ctree.c:550) +==12638== by 0x438954: UnknownInlinedFun (kerncompat.h:91) +==12638== by 0x438954: btrfs_search_slot (ctree.c:1120) +==12638== by 0x40DD1F: count_csum_range (cmds-check.c:1419) +==12638== by 0x40DD1F: process_file_extent (cmds-check.c:1551) +==12638== by 0x40DD1F: process_one_leaf (cmds-check.c:1617) +==12638== by 0x40DD1F: walk_down_tree (cmds-check.c:1742) +==12638== by 0x40DD1F: check_fs_root (cmds-check.c:3380) +==12638== by 0x40DD1F: check_fs_roots.isra.51 (cmds-check.c:3516) +==12638== by 0x4C64B0F: ??? +==12638== by 0x4C30A2F: ??? +==12638== by 0x4C468CF: ??? +==12638== by 0x32629B88DF: ??? (in /usr/lib64/libc-2.20.so) +==12638== by 0x4C3657F: ??? +==12638== +==12638== Use of uninitialised value of size 8 +==12638== at 0x4A0B3A0: memcpy@@GLIBC_2.14 (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) +==12638== by 0x436E99: UnknownInlinedFun (ctree.h:1613) +==12638== by 0x436E99: check_block.part.14 (ctree.c:550) +==12638== by 0x438954: UnknownInlinedFun (kerncompat.h:91) +==12638== by 0x438954: btrfs_search_slot (ctree.c:1120) +==12638== by 0x40DD1F: count_csum_range (cmds-check.c:1419) +==12638== by 0x40DD1F: process_file_extent (cmds-check.c:1551) +==12638== by 0x40DD1F: process_one_leaf (cmds-check.c:1617) +==12638== by 0x40DD1F: walk_down_tree (cmds-check.c:1742) +==12638== by 0x40DD1F: check_fs_root (cmds-check.c:3380) +==12638== by 0x40DD1F: check_fs_roots.isra.51 (cmds-check.c:3516) +==12638== by 0x4C64B0F: ??? +==12638== by 0x4C30A2F: ??? +==12638== by 0x4C468CF: ??? +==12638== by 0x32629B88DF: ??? (in /usr/lib64/libc-2.20.so) +==12638== by 0x4C3657F: ??? +==12638== +==12638== Invalid read of size 1 +==12638== at 0x4A0B3A0: memcpy@@GLIBC_2.14 (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) +==12638== by 0x436E99: UnknownInlinedFun (ctree.h:1613) +==12638== by 0x436E99: check_block.part.14 (ctree.c:550) +==12638== by 0x438954: UnknownInlinedFun (kerncompat.h:91) +==12638== by 0x438954: btrfs_search_slot (ctree.c:1120) +==12638== by 0x40DD1F: count_csum_range (cmds-check.c:1419) +==12638== by 0x40DD1F: process_file_extent (cmds-check.c:1551) +==12638== by 0x40DD1F: process_one_leaf (cmds-check.c:1617) +==12638== by 0x40DD1F: walk_down_tree (cmds-check.c:1742) +==12638== by 0x40DD1F: check_fs_root (cmds-check.c:3380) +==12638== by 0x40DD1F: check_fs_roots.isra.51 (cmds-check.c:3516) +==12638== by 0x4C64B0F: ??? +==12638== by 0x4C30A2F: ??? +==12638== by 0x4C468CF: ??? +==12638== by 0x32629B88DF: ??? (in /usr/lib64/libc-2.20.so) +==12638== by 0x4C3657F: ??? +==12638== Address 0xa25c9de9 is not stack'd, malloc'd or (recently) free'd +==12638== +==12638== +==12638== Process terminating with default action of signal 11 (SIGSEGV) +==12638== Access not within mapped region at address 0xA25C9DE9 +==12638== at 0x4A0B3A0: memcpy@@GLIBC_2.14 (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) +==12638== by 0x436E99: UnknownInlinedFun (ctree.h:1613) +==12638== by 0x436E99: check_block.part.14 (ctree.c:550) +==12638== by 0x438954: UnknownInlinedFun (kerncompat.h:91) +==12638== by 0x438954: btrfs_search_slot (ctree.c:1120) +==12638== by 0x40DD1F: count_csum_range (cmds-check.c:1419) +==12638== by 0x40DD1F: process_file_extent (cmds-check.c:1551) +==12638== by 0x40DD1F: process_one_leaf (cmds-check.c:1617) +==12638== by 0x40DD1F: walk_down_tree (cmds-check.c:1742) +==12638== by 0x40DD1F: check_fs_root (cmds-check.c:3380) +==12638== by 0x40DD1F: check_fs_roots.isra.51 (cmds-check.c:3516) +==12638== by 0x4C64B0F: ??? +==12638== by 0x4C30A2F: ??? +==12638== by 0x4C468CF: ??? +==12638== by 0x32629B88DF: ??? (in /usr/lib64/libc-2.20.so) +==12638== by 0x4C3657F: ??? +==12638== If you believe this happened as a result of a stack +==12638== overflow in your program's main thread (unlikely but +==12638== possible), you can try to increase the size of the +==12638== main thread stack using the --main-stacksize= flag. +==12638== The main thread stack size used in this run was 8388608. +==12638== +==12638== HEAP SUMMARY: +==12638== in use at exit: 46,260 bytes in 56 blocks +==12638== total heap usage: 380 allocs, 324 frees, 218,054 bytes allocated +==12638== +==12638== LEAK SUMMARY: +==12638== definitely lost: 272 bytes in 2 blocks +==12638== indirectly lost: 800 bytes in 8 blocks +==12638== possibly lost: 88 bytes in 1 blocks +==12638== still reachable: 45,100 bytes in 45 blocks +==12638== suppressed: 0 bytes in 0 blocks +==12638== Rerun with --leak-check=full to see details of leaked memory +==12638== +==12638== For counts of detected and suppressed errors, rerun with: -v +==12638== Use --track-origins=yes to see where uninitialised values come from +==12638== ERROR SUMMARY: 10 errors from 10 contexts (suppressed: 0 from 0) +[1] 12638 segmentation fault valgrind btrfs check btrfs_fukked_memorycorruption.bin diff --git a/tests/fsck-tests/015-check-bad-memory-access/bko-97171-btrfs-image.raw.xz b/tests/fsck-tests/015-check-bad-memory-access/bko-97171-btrfs-image.raw.xz Binary files differnew file mode 100644 index 00000000..f3f0944d --- /dev/null +++ b/tests/fsck-tests/015-check-bad-memory-access/bko-97171-btrfs-image.raw.xz |