On 06/13/2012 12:58 AM, Alex Elder wrote: > On 06/12/2012 12:02 AM, Yan, Zheng wrote: >> On 06/12/2012 01:00 PM, Sage Weil wrote: >>> Yep. This was just fixed yesterday, in the testing-next branch, by >>> 'libceph: transition socket state prior to actual connect'. >>> >>> Are you still hitting the bio null deref? >>> >> No, >> >> Cheers >> Yan, Zheng > > Would you be able to narrow down exactly what fixed the bio null > problem? Are you able to easily reproduce it? Are you running > the master branch, or testing, or what? > The 'clear msg->bio_iter' patch. Without it, I always got below Oops when xfstest reached the 49th test case. --- Jun 13 09:34:14 zyan5-desk kernel: [ 1192.610673] libceph: osd3 10.239.36.78:6807 socket closed Jun 13 09:34:14 zyan5-desk kernel: [ 1192.612784] BUG: unable to handle kernel NULL pointer dereference at 0000000000000048 Jun 13 09:34:14 zyan5-desk kernel: [ 1192.614482] IP: [<ffffffffa062bc98>] con_work+0x19a8/0x2c80 [libceph] Jun 13 09:34:14 zyan5-desk kernel: [ 1192.616120] PGD 137d91067 PUD 137d92067 PMD 0 Jun 13 09:34:14 zyan5-desk kernel: [ 1192.617749] Oops: 0000 [#1] SMP Jun 13 09:34:14 zyan5-desk kernel: [ 1192.619404] CPU 6 Jun 13 09:34:14 zyan5-desk kernel: [ 1192.621059] Pid: 8239, comm: kworker/6:6 Not tainted 3.5.0-rc2+ #91 Dell Inc. Studio XPS 8000/0X231R Jun 13 09:34:14 zyan5-desk kernel: [ 1192.622700] RIP: 0010:[<ffffffffa062bc98>] [<ffffffffa062bc98>] con_work+0x19a8/0x2c80 [libceph] Jun 13 09:34:14 zyan5-desk kernel: [ 1192.624371] RSP: 0018:ffff88000efb7cb0 EFLAGS: 00010246 Jun 13 09:34:14 zyan5-desk kernel: [ 1192.626119] RAX: 0000000000000000 RBX: ffff880122370030 RCX: 000000000006a000 Jun 13 09:34:14 zyan5-desk kernel: [ 1192.627694] RDX: 0000000000000000 RSI: 0000000000016000 RDI: ffff880122370420 Jun 13 09:34:14 zyan5-desk kernel: [ 1192.629267] RBP: ffff88000efb7e00 R08: 00000000418d4bd6 R09: 0000000000000000 Jun 13 09:34:14 zyan5-desk kernel: [ 1192.630811] R10: 0000000000000002 R11: 0000000000000dc7 R12: 0000000000080000 Jun 13 09:34:14 zyan5-desk kernel: [ 1192.632441] R13: 0000000000000000 R14: ffff88003af1bd00 R15: ffffea00044aec40 Jun 13 09:34:14 zyan5-desk kernel: [ 1192.633996] FS: 0000000000000000(0000) GS:ffff88013fd80000(0000) knlGS:0000000000000000 Jun 13 09:34:14 zyan5-desk kernel: [ 1192.635621] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Jun 13 09:34:14 zyan5-desk kernel: [ 1192.637239] CR2: 0000000000000048 CR3: 0000000137d90000 CR4: 00000000000007e0 Jun 13 09:34:14 zyan5-desk kernel: [ 1192.638841] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Jun 13 09:34:14 zyan5-desk kernel: [ 1192.640493] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Jun 13 09:34:14 zyan5-desk kernel: [ 1192.642255] Process kworker/6:6 (pid: 8239, threadinfo ffff88000efb6000, task ffff880041242e60) Jun 13 09:34:14 zyan5-desk kernel: [ 1192.643917] Stack: Jun 13 09:34:14 zyan5-desk kernel: [ 1192.645588] ffff880000000001 ffffffff00000006 ffff88000efb7dac 0000000600000002 Jun 13 09:34:14 zyan5-desk kernel: [ 1192.647270] ffff88000efb7d30 ffffffff810930d1 ffff88013b00a400 0000000000000087 Jun 13 09:34:14 zyan5-desk kernel: [ 1192.648923] 0000000eed1e4f54 ffff880041242e60 ffff88000efb7d30 ffffffff00000000 Jun 13 09:34:14 zyan5-desk kernel: [ 1192.650563] Call Trace: Jun 13 09:34:14 zyan5-desk kernel: [ 1192.652162] [<ffffffff810930d1>] ? update_curr+0x141/0x1f0 Jun 13 09:34:14 zyan5-desk kernel: [ 1192.653688] [<ffffffffa062a2f0>] ? ceph_msg_new+0x2d0/0x2d0 [libceph] Jun 13 09:34:14 zyan5-desk kernel: [ 1192.655203] [<ffffffff81075f6d>] process_one_work+0x11d/0x470 Jun 13 09:34:14 zyan5-desk kernel: [ 1192.656714] [<ffffffff81077069>] worker_thread+0x159/0x340 Jun 13 09:34:14 zyan5-desk kernel: [ 1192.658278] [<ffffffff81076f10>] ? manage_workers+0x230/0x230 Jun 13 09:34:14 zyan5-desk kernel: [ 1192.659606] [<ffffffff8107bee3>] kthread+0x93/0xa0 Jun 13 09:34:14 zyan5-desk kernel: [ 1192.660932] [<ffffffff8160d9e4>] kernel_thread_helper+0x4/0x10 Jun 13 09:34:14 zyan5-desk kernel: [ 1192.662293] [<ffffffff8107be50>] ? kthread_freezable_should_stop+0x70/0x70 Jun 13 09:34:14 zyan5-desk kernel: [ 1192.663670] [<ffffffff8160d9e0>] ? gs_change+0x13/0x13 Jun 13 09:34:14 zyan5-desk kernel: [ 1192.665027] Code: ef fb ff ff 0f 1f 80 00 00 00 00 49 83 be 90 00 00 00 00 0f 84 7a 01 00 00 49 63 86 a0 00 00 00 49 8b 96 98 00 00 00 48 c1 e0 04 <48> 03 42 48 4c 8b 38 8b 48 0c 8b 50 08 e9 08 f8 ff ff 49 89 86 Jun 13 09:34:14 zyan5-desk kernel: [ 1192.666570] RIP [<ffffffffa062bc98>] con_work+0x19a8/0x2c80 [libceph] Jun 13 09:34:14 zyan5-desk kernel: [ 1192.668232] RSP <ffff88000efb7cb0> Jun 13 09:34:14 zyan5-desk kernel: [ 1192.669795] CR2: 0000000000000048 -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
