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电梯直达

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发表于 2016-04-25 06:28 |只看该作者 |倒序浏览

使用cgroup控制cpu后，性能测试时发现压力大点时，操作系统会自动重启。
重启后查看 /var/crash/127.0.0.1-2016.04.23-21:52:08/vmcore-dmesg.txt 都有类似的Oops日志
请大侠帮看看，谢谢。

[84617.784032] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010
[84617.784682] IP: [<ffffffff812da971>] rb_next+0x1/0x50
[84617.785024] PGD 0
[84617.785360] Oops: 0000 [#1] SMP
[84617.785697] Modules linked in: fuse btrfs zlib_deflate raid6_pq xor vfat msdos fat binfmt_misc bridge stp llc bonding ext4 mbcache jbd2 iTCO_wdt iTCO_vendor_support intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel aesni_intel lrw gf128mul glue_helper ablk_helper cryptd serio_raw pcspkr sb_edac edac_core lpc_ich mfd_core i2c_i801 mei_me ses mei enclosure ioatdma shpchp wmi xfs libcrc32c sd_mod crc_t10dif crct10dif_common isci igb ixgbe libsas ahci mdio scsi_transport_sas libahci ptp pps_core libata i2c_algo_bit i2c_core megaraid_sas dca dm_mirror dm_region_hash dm_log dm_mod
[84617.788601] CPU: 18 PID: 1684 Comm: kworker/18:1H Not tainted 3.10.0-229.el7.x86_64 #1
[84617.789928] task: ffff8810251f0000 ti: ffff8810250e8000 task.ti: ffff8810250e8000
[84617.790584] RIP: 0010:[<ffffffff812da971>]  [<ffffffff812da971>] rb_next+0x1/0x50
[84617.791251] RSP: 0018:ffff8810250ebda8  EFLAGS: 00010046
[84617.791591] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[84617.791928] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000010
[84617.792266] RBP: ffff8810250ebdf0 R08: ffff881026bd6820 R09: 0000000000000000
[84617.792608] R10: 0000000000000000 R11: 0000000000000001 R12: ffff88103ef53700
[84617.792951] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88103ef53280
[84617.793289] FS:  0000000000000000(0000) GS:ffff88103ef40000(0000) knlGS:0000000000000000
[84617.793949] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[84617.794287] CR2: 00000000000000b8 CR3: 000000000190a000 CR4: 00000000001407e0
[84617.794631] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[84617.794972] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[84617.795312] Stack:
[84617.795643]  ffff8810250ebdf0 ffffffff810afe39 00000001250ebde0 ffff88103ef53680
[84617.796318]  ffff8810251f05e0 ffff88103ef53680 0000000000000012 ffff881024b16180
[84617.796989]  ffff88103ef53280 ffff8810250ebe50 ffffffff81608b97 ffff8810251f0000
[84617.797646] Call Trace:
[84617.797974]  [<ffffffff810afe39>] ? pick_next_task_fair+0x129/0x1d0
[84617.798306]  [<ffffffff81608b97>] __schedule+0x127/0x7c0
[84617.798630]  [<ffffffff81609259>] schedule+0x29/0x70
[84617.798965]  [<ffffffff8108ff39>] worker_thread+0x1c9/0x400
[84617.799303]  [<ffffffff8108fd70>] ? rescuer_thread+0x400/0x400
[84617.799639]  [<ffffffff8109726f>] kthread+0xcf/0xe0
[84617.799978]  [<ffffffff810971a0>] ? kthread_create_on_node+0x140/0x140
[84617.800322]  [<ffffffff81613cfc>] ret_from_fork+0x7c/0xb0
[84617.800657]  [<ffffffff810971a0>] ? kthread_create_on_node+0x140/0x140
[84617.800999] Code: 89 06 48 8b 47 08 48 89 46 08 48 8b 47 10 48 89 46 10 c3 0f 1f 80 00 00 00 00 48 89 32 eb b2 0f 1f 00 48 89 70 10 eb a9 66 90 55 <48> 8b 17 48 89 e5 48 39 d7 74 3b 48 8b 47 08 48 85 c0 75 0e eb
[84617.802222] RIP  [<ffffffff812da971>] rb_next+0x1/0x50
[84617.802572]  RSP <ffff8810250ebda8>
[84617.802906] CR2: 0000000000000010

其中 kworker/18:1H Not tainted中的kworker，也会经常是其他的，如java。Call Trace还有类似这种的
[61981.411841] Call Trace:
[61981.412201]  [<ffffffff810afe39>] ? pick_next_task_fair+0x129/0x1d0
[61981.412550]  [<ffffffff81608b97>] __schedule+0x127/0x7c0
[61981.412886]  [<ffffffff81609259>] schedule+0x29/0x70
[61981.413223]  [<ffffffff8109fc53>] smpboot_thread_fn+0xd3/0x1a0
[61981.413567]  [<ffffffff81609259>] ? schedule+0x29/0x70
[61981.413913]  [<ffffffff8109fb80>] ? lg_global_unlock+0xc0/0xc0
[61981.414252]  [<ffffffff8109726f>] kthread+0xcf/0xe0
[61981.414587]  [<ffffffff810971a0>] ? kthread_create_on_node+0x140/0x140
[61981.414930]  [<ffffffff81613cfc>] ret_from_fork+0x7c/0xb0
[61981.415269]  [<ffffffff810971a0>] ? kthread_create_on_node+0x140/0x140