On 28/10/13 08:28, Richard Davies wrote:
I further attach some other types of memory manager errors found in the kernel logs around the same time. There are several occurrences of each, but I have only copied one here for brevity: 19:18:27 kernel: BUG: Bad page map in process qemu-system-x86 pte:00000608 pmd:1d57fd067 19:18:27 kernel: addr:00007f8150353000 vm_flags:80100073 anon_vma:ffff8817fc745a80 mapping: (null) index:7f8150353 19:18:27 kernel: CPU: 2 PID: 29900 Comm: qemu-system-x86 Tainted: G B 3.11.2-elastic #2 19:18:27 kernel: Hardware name: Supermicro H8DG6/H8DGi/H8DG6/H8DGi, BIOS 2.0b 03/01/2012 19:18:27 kernel: 00007f8150353000 ffff880b12d4dab8 ffffffff817ee7a6 ffff880807c8dba8 19:18:27 kernel: ffff880a03bb65c0 ffff880b12d4db08 ffffffff81135ed5 dead000000200200 19:18:27 kernel: 00000007f8150353 ffff880b12d4db08 00007f8150353000 ffff880a03bb65c0 19:18:27 kernel: Call Trace: 19:18:27 kernel: [<ffffffff817ee7a6>] dump_stack+0x55/0x86 19:18:27 kernel: [<ffffffff81135ed5>] print_bad_pte+0x1f5/0x213 19:18:27 kernel: [<ffffffff811379fd>] unmap_single_vma+0x509/0x6d6 19:18:27 kernel: [<ffffffff81138291>] unmap_vmas+0x4d/0x80 19:18:27 kernel: [<ffffffff8113e615>] exit_mmap+0x93/0x11e 19:18:27 kernel: [<ffffffff810bc2fb>] mmput+0x51/0xdb 19:18:27 kernel: [<ffffffff810c00b1>] do_exit+0x33c/0x8a2 19:18:27 kernel: [<ffffffff810c9779>] ? sigprocmask+0x5e/0x64 19:18:27 kernel: [<ffffffff810c7215>] ? __dequeue_signal+0x16/0x114 19:18:27 kernel: [<ffffffff810c06af>] do_group_exit+0x6a/0x9d 19:18:27 kernel: [<ffffffff810c956a>] get_signal_to_deliver+0x488/0x4a7 19:18:27 kernel: [<ffffffff81032db9>] do_signal+0x47/0x48f 19:18:27 kernel: [<ffffffff8110dc29>] ? rcu_eqs_enter+0x7d/0x82 19:18:27 kernel: [<ffffffff810e0ff4>] ? account_user_time+0x6a/0x95 19:18:27 kernel: [<ffffffff810e13b6>] ? vtime_account_user+0x5d/0x65 19:18:27 kernel: [<ffffffff81033229>] do_notify_resume+0x28/0x6a 19:18:27 kernel: [<ffffffff817f6358>] int_signal+0x12/0x17 19:18:33 kernel: BUG: Bad rss-counter state mm:ffff8817fb98bf00 idx:1 val:1 19:18:33 kernel: BUG: Bad rss-counter state mm:ffff8817fb98bf00 idx:2 val:-1
The above traces seem similar with the ones that were reported by Dave couple of months ago in the LKML thread https://lkml.org/lkml/2013/8/7/27.
Any further thoughts on why this happens? Cheers, Alin. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>