56 lines
3.2 KiB
Plaintext
56 lines
3.2 KiB
Plaintext
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URL: https://bugzilla.kernel.org/show_bug.cgi?id=172811
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Lukas Lueg 2016-09-23 18:34:15 UTC
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More news from the fuzzer. The attached image causes a segmentation fault when
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running btrfsck over it; using btrfs-progs v4.7.2-55-g2b7c507
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This may be the same cause as 156721, the call-tree is different, though.
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The juicy parts:
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==19342==ERROR: AddressSanitizer: SEGV on unknown address 0x0000000000e5 (pc 0x7f3b12e1df50 bp 0x7ffeb50b4260 sp 0x7ffeb50b39e8 T0)
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#0 0x7f3b12e1df4f in __memmove_avx_unaligned (/lib64/libc.so.6+0x149f4f)
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#1 0x4a982c in __asan_memcpy (/home/lukas/dev/btrfsfuzz/bin-asan/bin/btrfs+0x4a982c)
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#2 0x5c2d59 in read_extent_buffer /home/lukas/dev/btrfsfuzz/src-asan/extent_io.c:867:2
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#3 0x52eaa6 in btrfs_node_key /home/lukas/dev/btrfsfuzz/src-asan/./ctree.h:1667:2
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#4 0x5436c7 in check_fs_root /home/lukas/dev/btrfsfuzz/src-asan/cmds-check.c:3661:3
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#5 0x5224ef in check_fs_roots /home/lukas/dev/btrfsfuzz/src-asan/cmds-check.c:3809:10
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#6 0x51e772 in cmd_check /home/lukas/dev/btrfsfuzz/src-asan/cmds-check.c:11533:8
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#7 0x4f0ee1 in main /home/lukas/dev/btrfsfuzz/src-asan/btrfs.c:243:8
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#8 0x7f3b12cf4730 in __libc_start_main (/lib64/libc.so.6+0x20730)
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#9 0x421358 in _start (/home/lukas/dev/btrfsfuzz/bin-asan/bin/btrfs+0x421358)
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parent transid verify failed on 4198400 wanted 65305493131755520 found 14
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parent transid verify failed on 4198400 wanted 65305493131755520 found 14
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Ignoring transid failure
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ERROR: add_tree_backref failed: File exists
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ERROR: add_tree_backref failed: File exists
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parent transid verify failed on 131072 wanted 36283884678912 found 4
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parent transid verify failed on 131072 wanted 36283884678912 found 4
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Ignoring transid failure
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ERROR: tree block bytenr 1280 is not aligned to sectorsize 4096
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checking free space cache
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checking fs roots
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root 5 root dir 41471 not found
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parent transid verify failed on 4198400 wanted 4 found 14
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Ignoring transid failure
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parent transid verify failed on 131072 wanted 36283884678912 found 4
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Ignoring transid failure
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ASAN:DEADLYSIGNAL
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=================================================================
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==19342==ERROR: AddressSanitizer: SEGV on unknown address 0x0000000000e5 (pc 0x7f3b12e1df50 bp 0x7ffeb50b4260 sp 0x7ffeb50b39e8 T0)
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#0 0x7f3b12e1df4f in __memmove_avx_unaligned (/lib64/libc.so.6+0x149f4f)
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#1 0x4a982c in __asan_memcpy (/home/lukas/dev/btrfsfuzz/bin-asan/bin/btrfs+0x4a982c)
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#2 0x5c2d59 in read_extent_buffer /home/lukas/dev/btrfsfuzz/src-asan/extent_io.c:867:2
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#3 0x52eaa6 in btrfs_node_key /home/lukas/dev/btrfsfuzz/src-asan/./ctree.h:1667:2
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#4 0x5436c7 in check_fs_root /home/lukas/dev/btrfsfuzz/src-asan/cmds-check.c:3661:3
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#5 0x5224ef in check_fs_roots /home/lukas/dev/btrfsfuzz/src-asan/cmds-check.c:3809:10
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#6 0x51e772 in cmd_check /home/lukas/dev/btrfsfuzz/src-asan/cmds-check.c:11533:8
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#7 0x4f0ee1 in main /home/lukas/dev/btrfsfuzz/src-asan/btrfs.c:243:8
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#8 0x7f3b12cf4730 in __libc_start_main (/lib64/libc.so.6+0x20730)
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#9 0x421358 in _start (/home/lukas/dev/btrfsfuzz/bin-asan/bin/btrfs+0x421358)
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AddressSanitizer can not provide additional info.
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SUMMARY: AddressSanitizer: SEGV (/lib64/libc.so.6+0x149f4f) in __memmove_avx_unaligned
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==19342==ABORTING
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