BUG: Unable to handle kernel NULL pointer dereference at 00000000000002dc

Type:
kernel NULL pointer
Class:
bug
Kernel version:
4.10.9
Tainted info:
  • G - All loaded modules have GPL or compatible license
  • W - Taint on warning
Architecture:
x86_64
Distribution:
Unknown
Hardware:
Intel Corporation S2600CWR/S2600CWR, BIOS SE5C610.86B.01.01.0020.122820161512 12/28/2016
Guilty info:
  • Function: bdevname
Registers:
  • CPU: 18
  • PID: 1524
  • RIP: bd
  • RSP: ffff9719c0b17d50
  • EFLAGS: 00000246
  • RAX: ffffffffffffffda
  • RBX: 00007ffff7885580
  • RCX: 00007f438812fa40
  • RDX: 000000000000000a
  • RSI: 0000000001ee2010
  • RDI: 0000000000000003
  • RBP: 00007ffff7885570
  • R08: 00007ffff7887a16
  • R09: 000000000000000a
  • R11: 0000000000000246
  • R12: 0000000000400860
  • R14: 0000000000000000
  • R15: 0000000000000000
  • GS: ffff8f503f480000(0000)
  • knlGS: 0000000000000000
  • DS: 0000
  • ES: 0000
  • CR0: 0000000080050033
  • CR2: 00000000000002dc
  • CR3: 0000001d85455000
  • CR4: 00000000003406e0
  • DR0: 0000000000000000
  • DR1: 0000000000000000
  • DR2: 0000000000000000
  • DR3: 0000000000000000
  • DR6: 00000000fffe0ff0
  • DR7: 0000000000000400
  • _RAX: 0000000000000001
Dissassembled code:
  • Code: 00 00 00 e8 ec 9d 01 00 5b 4c 89 e0 41 5c 41 5d 41 5e 5d c3 0f 1f 44 00 00 55 48 8b 47 70 48 89 f2 48 8b bf 80 00 00 00 48 89 e5 b0 dc 02 00 00 e8 3e ff ff ff 5d c3 66 90 66 2e 0f 1f 84 00
  • All code
  • ========
  • 0: 00 00 add %al,(%rax)
  • 2: 00 e8 add %ch,%al
  • 4: ec in (%dx),%al
  • 5: 9d popfq
  • 6: 01 00 add %eax,(%rax)
  • 8: 5b pop %rbx
  • 9: 4c 89 e0 mov %r12,%rax
  • c: 41 5c pop %r12
  • e: 41 5d pop %r13
  • 10: 41 5e pop %r14
  • 12: 5d pop %rbp
  • 13: c3 retq
  • 14: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
  • 19: 55 push %rbp
  • 1a: 48 8b 47 70 mov 0x70(%rdi),%rax
  • 1e: 48 89 f2 mov %rsi,%rdx
  • 21: 48 8b bf 80 00 00 00 mov 0x80(%rdi),%rdi
  • 28: 48 89 e5 mov %rsp,%rbp
  • 2b:* 8b b0 dc 02 00 00 mov 0x2dc(%rax),%esi <-- trapping instruction
  • 31: e8 3e ff ff ff callq 0xffffffffffffff74
  • 36: 5d pop %rbp
  • 37: c3 retq
  • 38: 66 90 xchg %ax,%ax
  • 3a: 66 data16
  • 3b: 2e cs
  • 3c: 0f .byte 0xf
  • 3d: 1f (bad)
  • 3e: 84 00 test %al,(%rax)
  • Code starting with the faulting instruction
  • ===========================================
  • 0: 8b b0 dc 02 00 00 mov 0x2dc(%rax),%esi
  • 6: e8 3e ff ff ff callq 0xffffffffffffff49
  • b: 5d pop %rbp
  • c: c3 retq
  • d: 66 90 xchg %ax,%ax
  • f: 66 data16
  • 10: 2e cs
  • 11: 0f .byte 0xf
  • 12: 1f (bad)
  • 13: 84 00 test %al,(%rax)
Linked modules:

deadline_iosched, vfat

Last seen similar oops:
2017-05-24
Total count:
38 (from 1 unique sources)

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