Hi guys, We're seeing kernel crashes while dumping kernel stack durring OOM timeout. Here we see that the victim pointer is not valid.
Is it known issue? [2725959.095523] RIP: 0010:[<ffffffff8102e52f>] [<ffffffff8102e52f>] dump_trace+0x1df/0x2d0 [2725959.096079] RSP: 0000:ffff8803020abcb0 EFLAGS: 00010283 [2725959.096741] RAX: 0000000000000000 RBX: ffffffff816ba7a0 RCX: 0000000000000002 [2725959.097340] RDX: 0000000000000002 RSI: 0000000000000000 RDI: ffff88022c838000 [2725959.097909] RBP: ffff8803020abd20 R08: ffff88086fc80000 R09: ffffffff81917c27 [2725959.098465] R10: 0000000000000000 R11: ffff8803020aba1e R12: ffff88022c838000 [2725959.099026] R13: ffff8803020abd20 R14: 0000000000000000 R15: 0000000000000000 [2725959.099596] FS: 00007f16a6c46840(0000) GS:ffff88086fc80000(0000) knlGS:0000000000000000 [2725959.100214] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [2725959.100813] CR2: 0000000000000000 CR3: 00000004e3c52000 CR4: 00000000003607e0 [2725959.101427] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [2725959.102044] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [2725959.102609] Call Trace: [2725959.103165] [<ffffffff8108bcd6>] ? vprintk_default+0x36/0x50 [2725959.103719] [<ffffffff8102f6cd>] show_trace_log_lvl+0x4d/0x60 [2725959.104285] [<ffffffff8102f734>] show_stack+0x34/0x70 [2725959.104843] [<ffffffff81198221>] oom_trylock+0x1d1/0x1e0 [2725959.105380] [<ffffffff8120bed1>] mem_cgroup_oom_synchronize+0xe1/0x4e0 [2725959.105954] [<ffffffff811a348f>] ? put_page+0x4f/0x60 [2725959.106502] [<ffffffff811c7fc7>] ? handle_mm_fault+0x4d7/0x14c0 [2725959.107088] [<ffffffff810d5ff0>] ? __account_cfs_rq_runtime+0x100/0x160 [2725959.107654] [<ffffffff81198fe3>] pagefault_out_of_memory+0x13/0x50 [2725959.108252] [<ffffffff816965e5>] mm_fault_error+0x68/0x12b [2725959.108856] [<ffffffff816a8df5>] __do_page_fault+0x395/0x450 [2725959.109438] [<ffffffff816a8ee5>] do_page_fault+0x35/0x90 [2725959.110051] [<ffffffff816a4cf8>] page_fault+0x28/0x30 [2725959.110634] Code: 8b b7 e0 06 00 00 4d 85 ed 0f 85 bf fe ff ff 65 48 8b 04 25 00 0e 01 00 49 89 ed 48 39 c7 0f 84 aa fe ff ff 48 8b 87 e0 06 00 00 <4c> 8b 28 e9 9b fe ff ff 66 0f 1f 84 00 00 00 00 00 8b 45 9c 0f [2725959.111960] RIP [<ffffffff8102e52f>] dump_trace+0x1df/0x2d0 [2725959.112555] RSP <ffff8803020abcb0> [2725959.113172] CR2: 0000000000000000 struct mem_cgroup -h 0xffff880765f09800 | less oom_ctx = { owner = 0x0, victim = 0xffff88022c838000, marked = 0x1, oom_start = 0x19a3c0875, oom_end = 0x19a3c0876, overdraft = 0xfa00000, rage = 0x14, waitq = { lock = { { rlock = { raw_lock = { { head_tail = 0x99c099c, tickets = { head = 0x99c, tail = 0x99c } } Thanks! _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel