I got Panic message of "kernel BUG at mm/rmap.c:500!", why?
Issue
- A x86 server running Red Hat Enterprise Linux 4.7 got panic with back trace printed in /var/log/messages ”BUG at mm/rmap.c:500!“
- With these call trace in vmcore:
[c4437ca8] die at c0106049
[c4437cdc] do_invalid_op at c0106424
[c4437d8c] error_code (via invalid_op) at c02e14d1
EAX: ffffffff EBX: c201fb60 ECX: c38551c0 EDX: c033cff0 EBP: fff690a8
DS: 007b ESI: 00000000 ES: 007b EDI: d994d338
CS: 0060 EIP: c01542cb ERR: ffffffff EFLAGS: 00210286
[c4437dc8] page_remove_rmap at c01542cb
[c4437dd4] zap_pte_range at c014dfb5
[c4437e08] zap_pmd_range at c014e0d7
[c4437e24] unmap_page_range at c014e136
[c4437e40] unmap_vmas at c014e24a
[c4437e78] exit_mmap at c0152577
[c4437ea0] mmput at c0120995
[c4437ea8] do_exit at c0124a7b
[c4437ec0] do_group_exit at c0124d7f
[c4437ed8] get_signal_to_deliver at c012d1c9
[c4437f00] do_signal at c0105bd4
[c4437fb8] do_notify_resume at c0105c80
[c4437fc0] system_call at c02e0a39
EAX: 89f85d43 EBX: b746ac90 ECX: b746ad0f EDX: b746aaf8
DS: 007b ESI: 0000000d ES: 007b EDI: 0000000e
SS: 007b ESP: b7468ff2 EBP: b746ac7b
CS: 0073 EIP: 65756d93 ERR: ffffffff EFLAGS: 0021029
Environment
- Red Hat Enterprise Linux 4 Update 7
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