69 lines
4.2 KiB
Plaintext
69 lines
4.2 KiB
Plaintext
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URL: https://bugzilla.kernel.org/show_bug.cgi?id=172861
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Lukas Lueg 2016-09-24 15:40:54 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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The juicy parts:
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==12279==ERROR: AddressSanitizer: SEGV on unknown address 0x6210010719f9 (pc 0x0000005f30bd bp 0x7ffcf39cc670 sp 0x7ffcf39cc670 T0)
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#0 0x5f30bc in btrfs_file_extent_type /home/lukas/dev/btrfsfuzz/src-asan/./ctree.h:2083:1
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#1 0x5f2f49 in add_refs_for_leaf_items /home/lukas/dev/btrfsfuzz/src-asan/qgroup-verify.c:664:17
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#2 0x5f2ba9 in travel_tree /home/lukas/dev/btrfsfuzz/src-asan/qgroup-verify.c:704:9
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#3 0x5f2c0a in travel_tree /home/lukas/dev/btrfsfuzz/src-asan/qgroup-verify.c:719:9
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#4 0x5f299b in add_refs_for_implied /home/lukas/dev/btrfsfuzz/src-asan/qgroup-verify.c:748:8
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#5 0x5efd39 in map_implied_refs /home/lukas/dev/btrfsfuzz/src-asan/qgroup-verify.c:766:9
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#6 0x5eed89 in qgroup_verify_all /home/lukas/dev/btrfsfuzz/src-asan/qgroup-verify.c:1366:8
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#7 0x51ea14 in cmd_check /home/lukas/dev/btrfsfuzz/src-asan/cmds-check.c:11571:9
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#8 0x4f0ee1 in main /home/lukas/dev/btrfsfuzz/src-asan/btrfs.c:243:8
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#9 0x7f811e227730 in __libc_start_main (/lib64/libc.so.6+0x20730)
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#10 0x421358 in _start (/home/lukas/dev/btrfsfuzz/bin-asan/bin/btrfs+0x421358)
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Extent back ref already exists for 0 parent 0 root 0
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Extent back ref already exists for 0 parent 0 root 0
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Extent back ref already exists for 0 parent 0 root 0
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Chunk[256, 228, 0]: length(4194304), offset(0), type(2) is not found in block group
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Chunk[256, 228, 0] stripe[1, 0] is not found in dev extent
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Chunk[256, 228, 4194304]: length(1638400), offset(4194304), type(5) is not found in block group
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Chunk[256, 228, 4194304] stripe[1, 4194304] is not found in dev extent
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Chunk[256, 228, 5832704]: length(1638400), offset(5832704), type(5) is not found in block group
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Chunk[256, 228, 5832704] stripe[1, 5832704] is not found in dev extent
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Chunk[256, 228, 7471104]: length(9306112), offset(7471104), type(5) is not found in block group
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Chunk[256, 228, 7471104] stripe[1, 7471104] is not found in dev extent
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ref mismatch on [0 4096] extent item 0, found 4
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Backref 0 parent 0 root 0 not found in extent tree
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Incorrect global backref count on 0 found 1 wanted 4
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backpointer mismatch on [0 4096]
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bad extent [0, 4096), type mismatch with chunk
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ref mismatch on [135168 4096] extent item 0, found 1
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Backref 135168 parent 3 root 3 not found in extent tree
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backpointer mismatch on [135168 4096]
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ref mismatch on [4202496 4096] extent item 0, found 1
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Backref 4202496 parent 1 root 1 not found in extent tree
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backpointer mismatch on [4202496 4096]
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Dev extent's total-byte(0) is not equal to byte-used(16777216) in dev[1, 216, 1]
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checking free space cache
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checking fs roots
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root 5 root dir 0 not found
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checking csums
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checking root refs
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checking quota groups
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ASAN:DEADLYSIGNAL
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=================================================================
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==12279==ERROR: AddressSanitizer: SEGV on unknown address 0x6210010719f9 (pc 0x0000005f30bd bp 0x7ffcf39cc670 sp 0x7ffcf39cc670 T0)
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#0 0x5f30bc in btrfs_file_extent_type /home/lukas/dev/btrfsfuzz/src-asan/./ctree.h:2083:1
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#1 0x5f2f49 in add_refs_for_leaf_items /home/lukas/dev/btrfsfuzz/src-asan/qgroup-verify.c:664:17
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#2 0x5f2ba9 in travel_tree /home/lukas/dev/btrfsfuzz/src-asan/qgroup-verify.c:704:9
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#3 0x5f2c0a in travel_tree /home/lukas/dev/btrfsfuzz/src-asan/qgroup-verify.c:719:9
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#4 0x5f299b in add_refs_for_implied /home/lukas/dev/btrfsfuzz/src-asan/qgroup-verify.c:748:8
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#5 0x5efd39 in map_implied_refs /home/lukas/dev/btrfsfuzz/src-asan/qgroup-verify.c:766:9
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#6 0x5eed89 in qgroup_verify_all /home/lukas/dev/btrfsfuzz/src-asan/qgroup-verify.c:1366:8
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#7 0x51ea14 in cmd_check /home/lukas/dev/btrfsfuzz/src-asan/cmds-check.c:11571:9
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#8 0x4f0ee1 in main /home/lukas/dev/btrfsfuzz/src-asan/btrfs.c:243:8
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#9 0x7f811e227730 in __libc_start_main (/lib64/libc.so.6+0x20730)
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#10 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 /home/lukas/dev/btrfsfuzz/src-asan/./ctree.h:2083:1 in btrfs_file_extent_type
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==12279==ABORTING
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