Hi, I change cephx disable to enable, when restart ceph luster it will be cause some osd node host kernel panic. Maybe it is a bug. OS: Ubuntu 14.04.4 Kernel : 4.2.0-34-generic Ceph Version: 0.94.6 (e832001feaf8c176593e0325c8298e3f16dfb403) /var/log/syslog: Apr 8 11:41:30 mon01 kernel: [262666.476487] libceph: osd63 up Apr 8 11:41:30 mon01 kernel: [262666.476488] libceph: osd64 up Apr 8 11:41:30 mon01 kernel: [262666.476488] libceph: osd66 up Apr 8 11:41:30 mon01 kernel: [262666.476489] libceph: osd67 up Apr 8 11:41:30 mon01 kernel: [262666.476490] libceph: osd68 up Apr 8 11:41:30 mon01 kernel: [262666.476491] libceph: osd69 up Apr 8 11:41:30 mon01 kernel: [262666.476491] libceph: osd70 up Apr 8 11:41:30 mon01 kernel: [262666.476508] libceph: mon2 172.24.1.60:6789 session established Apr 8 11:41:35 mon01 kernel: [262671.341710] libceph: osd35 172.24.1.63:6820 socket closed (con state CONNECTING) Apr 8 11:41:39 mon01 kernel: [262671.478117] libceph: osd5 down Apr 8 11:41:39 mon01 kernel: [262671.478136] libceph: osd5 up Apr 8 11:41:39 mon01 kernel: [262671.478137] libceph: osd11 down Apr 8 11:41:39 mon01 kernel: [262671.478138] libceph: osd29 down Apr 8 11:41:39 mon01 kernel: [262671.478139] libceph: osd35 down Apr 8 11:41:39 mon01 kernel: [262671.478140] libceph: osd47 down Apr 8 11:41:39 mon01 kernel: [262671.478140] libceph: osd65 down Apr 8 11:41:39 mon01 kernel: [262671.478162] BUG: unable to handle kernel paging request at ffffebe000000000 Apr 8 11:41:39 mon01 kernel: [262671.531460] IP: [<ffffffff811cd04a>] kfree+0x5a/0x130 Apr 8 11:41:39 mon01 kernel: [262671.584334] PGD 0 Apr 8 11:41:39 mon01 kernel: [262671.635847] Oops: 0000 [#1] SMP Apr 8 11:41:39 mon01 kernel: [262671.686779] Modules linked in: rbd libceph xfs libcrc32c iptable_filter ip_tables ip6table_filter ip6_tables x_tables x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel ipmi_ssif kvm ipmi_devintf crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw gf128mul glue_helper dcdbas ablk_helper cryptd mei_me sb_edac joydev input_leds lpc_ich wmi edac_core shpchp mei ipmi_si 8250_fintek ipmi_msghandler acpi_power_meter acpi_pad mac_hid bonding hid_generic usbhid hid ahci libahci igb i2c_algo_bit megaraid_sas dca ptp pps_core Apr 8 11:41:39 mon01 kernel: [262672.055841] CPU: 22 PID: 2961272 Comm: kworker/22:2 Not tainted 4.2.0-34-generic #39~14.04.1-Ubuntu Apr 8 11:41:39 mon01 kernel: [262672.162338] Hardware name: Dell Inc. PowerEdge R720/068CDY, BIOS 2.4.3 07/09/2014 Apr 8 11:41:39 mon01 kernel: [262672.268937] Workqueue: ceph-msgr con_work [libceph] Apr 8 11:41:39 mon01 kernel: [262672.322290] task: ffff88081c2d0dc0 ti: ffff880149ae8000 task.ti: ffff880149ae8000 Apr 8 11:41:39 mon01 kernel: [262672.428330] RIP: 0010:[<ffffffff811cd04a>] [<ffffffff811cd04a>] kfree+0x5a/0x130 Apr 8 11:41:39 mon01 kernel: [262672.535880] RSP: 0018:ffff880149aeba58 EFLAGS: 00010286 Apr 8 11:41:39 mon01 kernel: [262672.589486] RAX: 000001e000000000 RBX: 0000000000000012 RCX: ffff8807e7461018 Apr 8 11:41:39 mon01 kernel: [262672.695980] RDX: 000077ff80000000 RSI: ffff88081af2be04 RDI: 0000000000000012 Apr 8 11:41:39 mon01 kernel: [262672.803668] RBP: ffff880149aeba78 R08: 0000000000000000 R09: 0000000000000000 Apr 8 11:41:39 mon01 kernel: [262672.912299] R10: ffffebe000000000 R11: ffff880819a60e78 R12: ffff8800aec8df40 Apr 8 11:41:39 mon01 kernel: [262673.021769] R13: ffffffffc035f70f R14: ffff8807e5b138e0 R15: ffff880da9785840 Apr 8 11:41:39 mon01 kernel: [262673.131722] FS: 0000000000000000(0000) GS:ffff88081fac0000(0000) knlGS:0000000000000000 Apr 8 11:41:39 mon01 kernel: [262673.245377] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Apr 8 11:41:39 mon01 kernel: [262673.303281] CR2: ffffebe000000000 CR3: 0000000001c0d000 CR4: 00000000001406e0 Apr 8 11:41:39 mon01 kernel: [262673.417556] Stack: Apr 8 11:41:39 mon01 kernel: [262673.472943] ffff880149aeba88 ffff88081af2be04 ffff8800aec8df40 ffff88081af2be04 Apr 8 11:41:39 mon01 kernel: [262673.583767] ffff880149aeba98 ffffffffc035f70f ffff880149aebac8 ffff8800aec8df00 Apr 8 11:41:39 mon01 kernel: [262673.694546] ffff880149aebac8 ffffffffc035c89e ffff8807e5b138e0 ffff8805b047f800 Apr 8 11:41:39 mon01 kernel: [262673.805230] Call Trace: Apr 8 11:41:39 mon01 kernel: [262673.859116] [<ffffffffc035f70f>] ceph_x_destroy_authorizer+0x1f/0x50 [libceph] Apr 8 11:41:39 mon01 kernel: [262673.968705] [<ffffffffc035c89e>] ceph_auth_destroy_authorizer+0x3e/0x60 [libceph] Apr 8 11:41:39 mon01 kernel: [262674.078852] [<ffffffffc0352805>] put_osd+0x45/0x80 [libceph] Apr 8 11:41:39 mon01 kernel: [262674.134249] [<ffffffffc035290e>] remove_osd+0xae/0x140 [libceph] Apr 8 11:41:39 mon01 kernel: [262674.189124] [<ffffffffc0352aa3>] __reset_osd+0x103/0x150 [libceph] Apr 8 11:41:39 mon01 kernel: [262674.243749] [<ffffffffc0354703>] kick_requests+0x223/0x460 [libceph] Apr 8 11:41:39 mon01 kernel: [262674.297485] [<ffffffffc03559e2>] ceph_osdc_handle_map+0x282/0x5e0 [libceph] Apr 8 11:41:39 mon01 kernel: [262674.350813] [<ffffffffc035022e>] dispatch+0x4e/0x720 [libceph] Apr 8 11:41:39 mon01 kernel: [262674.403312] [<ffffffffc034bd91>] try_read+0x3d1/0x1090 [libceph] Apr 8 11:41:39 mon01 kernel: [262674.454712] [<ffffffff810ab7c2>] ? dequeue_entity+0x152/0x690 Apr 8 11:41:39 mon01 kernel: [262674.505096] [<ffffffffc034cb1b>] con_work+0xcb/0x1300 [libceph] Apr 8 11:41:39 mon01 kernel: [262674.555104] [<ffffffff8108fb3e>] process_one_work+0x14e/0x3d0 Apr 8 11:41:39 mon01 kernel: [262674.604072] [<ffffffff810901ea>] worker_thread+0x11a/0x470 Apr 8 11:41:39 mon01 kernel: [262674.652187] [<ffffffff810900d0>] ? rescuer_thread+0x310/0x310 Apr 8 11:41:39 mon01 kernel: [262674.699022] [<ffffffff810957a2>] kthread+0xd2/0xf0 Apr 8 11:41:39 mon01 kernel: [262674.744494] [<ffffffff810956d0>] ? kthread_create_on_node+0x1c0/0x1c0 Apr 8 11:41:39 mon01 kernel: [262674.789543] [<ffffffff817bd81f>] ret_from_fork+0x3f/0x70 Apr 8 11:41:39 mon01 kernel: [262674.834094] [<ffffffff810956d0>] ? kthread_create_on_node+0x1c0/0x1c0 Apr 8 11:41:39 mon01 kernel: [262674.878868] Code: 00 00 00 80 ff 77 00 00 49 ba 00 00 00 00 00 ea ff ff 48 01 d8 48 0f 42 15 d4 6f a4 00 48 01 d0 48 c1 e8 0c 48 c1 e0 06 49 01 c2 <49> 8b 02 f6 c4 80 0f 85 b5 00 00 00 49 8b 02 a8 80 0f 84 89 00 Apr 8 11:41:39 mon01 kernel: [262675.015731] RIP [<ffffffff811cd04a>] kfree+0x5a/0x130 Apr 8 11:41:39 mon01 kernel: [262675.060095] RSP <ffff880149aeba58> Apr 8 11:41:39 mon01 kernel: [262675.103075] CR2: ffffebe000000000 Apr 8 11:41:39 mon01 kernel: [262675.208862] ---[ end trace 4bb1e8c377c75d32 ]--- Very appreciated to get your reply! -- 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