36 lines
1.5 KiB
Plaintext
36 lines
1.5 KiB
Plaintext
URL: https://bugzilla.kernel.org/show_bug.cgi?id=155201
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Lukas Lueg 2016-08-28 19:15:53 UTC
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Created attachment 230921 [details]
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Image causing SIGFPE in btrfsck
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News from the fuzzer. See the attached image to reproduce using btrfs-progs
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v4.7-42-g56e9586.
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[Thread debugging using libthread_db enabled]
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Using host libthread_db library "/lib64/libthread_db.so.1".
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checking extents
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Chunk[0, 4194304] existed.
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Chunk[18446744073709551607, 228, 0]: length(1), offset(0), type(4160) mismatch
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with block group[0, 192, 4194304]: offset(4194304), objectid(0), flags(2)
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Program received signal SIGFPE, Arithmetic exception.
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0x000000000042b178 in calc_stripe_length (type=4160, length=1, num_stripes=0)
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at cmds-check.c:8018
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8018 stripe_size /= num_stripes;
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#0 0x000000000042b178 in calc_stripe_length (type=4160, length=1,
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num_stripes=0) at cmds-check.c:8018
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#1 0x000000000042b56d in check_chunk_refs (silent=0,
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dev_extent_cache=0x7fffffffdd30, block_group_cache=0x7fffffffdd60,
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chunk_rec=0x6b92c0) at cmds-check.c:8101
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#2 check_chunks (chunk_cache=chunk_cache@entry=0x7fffffffdd80,
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block_group_cache=block_group_cache@entry=0x7fffffffdd60,
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dev_extent_cache=dev_extent_cache@entry=0x7fffffffdd30, good=good@entry=0x0,
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bad=bad@entry=0x0, rebuild=rebuild@entry=0x0, silent=0) at cmds-check.c:8165
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#3 0x000000000042bbdd in check_chunks_and_extents (root=root@entry=0x6b2cf0)
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at cmds-check.c:8524
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#4 0x000000000042e3cb in cmd_check (argc=<optimized out>, argv=<optimized
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out>) at cmds-check.c:11430
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#5 0x000000000040a416 in main (argc=2, argv=0x7fffffffe218) at btrfs.c:243
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