** Description changed:
[Impact]
+
+ The node which mounts a ceph rbd volume causes a panic when all OSD
+ daemons on the all ceph nodes are restarted.
+
+ [642981.871592] ------------[ cut here ]------------
+ [642981.912255] kernel BUG at
+ /build/buildd/linux-3.13.0/net/ceph/osd_client.c:892!
+ [642981.994517] invalid opcode: 0000 [#1] SMP
+ [642982.037227] Modules linked in: xt_multiport iptable_mangle xt_nat
+ xt_tcpudp veth xfs rbd libceph libcrc32c xt_addrtype xt_conntrack
+ ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
+ iptable_filter ip_tables x_tables nf_nat nf_conntrack bridge aufs
+ ipmi_devintf joydev gpio_ich x86_pkg_temp_thermal intel_powerclamp coretemp
+ kvm_intel kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel
+ aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd hid_generic mei_me
+ ioatdma mei lpc_ich wmi ipmi_si 8021q garp stp mrp llc bonding
+ acpi_power_meter mac_hid lp parport ixgbe usbhid dca tg3 ahci libahci hid
+ ptp megaraid_sas mdio pps_core
+ [642982.528519] CPU: 0 PID: 1062099 Comm: kworker/0:6 Not tainted
+ 3.13.0-45-generic #74-Ubuntu
+ [642982.648057] Hardware name: NEC Express5800/R120f-1M
+ [N8100-2203Y]/MS-S0901, BIOS 5.0.4016 12/17/2014
+ [642982.775433] Workqueue: ceph-msgr con_work [libceph]
+ [642982.841300] task: ffff881028444800 ti: ffff880d92374000 task.ti:
+ ffff880d92374000
+ [642982.973255] RIP: 0010:[<ffffffffa025f5be>] [<ffffffffa025f5be>]
+ osd_reset+0x22e/0x2c0 [libceph]
+ [642983.114484] RSP: 0018:ffff880d92375d80 EFLAGS: 00010283
+ [642983.188540] RAX: ffff8800197f2ca8 RBX: ffff882028194750 RCX:
+ ffff880036bcdc48
+ [642983.334096] RDX: ffff8800197f2ca8 RSI: ffff8800197f2c10 RDI:
+ 0000000000000286
+ [642983.485552] RBP: ffff880d92375dd8 R08: 0000000000000000 R09:
+ 0000000000000000
+ [642983.643277] R10: ffffffff8160afcf R11: ffffea00710cae00 R12:
+ ffff8800197f2c58
+ [642983.805364] R13: ffff882028194810 R14: ffff880036bcdbf8 R15:
+ ffff880036bcdc18
+ [642983.968728] FS: 0000000000000000(0000) GS:ffff88103fa00000(0000)
+ knlGS:0000000000000000
+ [642984.135368] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
+ [642984.220577] CR2: 00007f60d4cb7868 CR3: 0000000001c0e000 CR4:
+ 00000000001407f0
+ [642984.383051] Stack:
+ [642984.459809] ffff8820281947a8 ffff882028194760 ffff8800197f2800
+ ffff8800197f2ca8
+ [642984.618038] ffff880d92375da0 ffff880d92375da0 ffff8800197f2c10
+ ffff8800197f2830
+
[Fix]
+
+ A linked list to manage OSDs in the kernel was corrupted when restarting
+ all OSD daemons on all ceph nodes at the almost same time.
+
+ The issues must be fixed by the following.
+
+ libceph: must use new tid when watch is resent
+ http://tracker.ceph.com/issues/8806
+
+ This includes two patched and they has been already released.
+
+ http://comments.gmane.org/gmane.comp.file-systems.ceph.devel/20878
+ [PATCH 1/2] libceph: abstract out ceph_osd_request enqueue logic
+ [PATCH 2/2] libceph: resend lingering requests with a new tid
+
+ 3.18 kernel adopts the fixes.
+
+ libceph: abstract out ceph_osd_request enqueue logic
+
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f671b581f1dac61354186b7373af5f97fe420584
+ libceph: resend lingering requests with a new tid
+
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2cc6128ab2afff7864dbdc33a73e2deaa935d9e0
+
[Test Case]
+
+ After setting up the ceph environment, repeatedly issued the following
+ command from a node to all ceph nodes.
+
+ rsh -i key -l ubuntu sn_hostname sudo service ceph-all restart
+
+ And verify if there is panics.
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => Gavin Guo (mimi0213kimo)
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https://bugs.launchpad.net/bugs/1488035
Title:
OSDs Linked list corruption causes kernel BUG at
/build/buildd/linux-3.13.0/net/ceph/osd_client.c:892!
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