** Also affects: linux (Ubuntu Trusty)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Trusty)
Milestone: None => ubuntu-14.04.3
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https://bugs.launchpad.net/bugs/1443648
Title:
Kernel panics on iSER (iscsi over IB) logouts
Status in linux package in Ubuntu:
Confirmed
Status in linux source package in Trusty:
New
Bug description:
While shutting down the "open-iscsi" daemon (with an iSER mapped
volume from other host) I'm getting the following kernel panic for
kernel 3.13.0-49:
"""
[272820.948946] scsi15 : iSCSI Initiator over iSER
[272843.474551] sd 14:0:0:1: [sdc] Synchronizing SCSI cache
[272843.998231] BUG: unable to handle kernel paging request at
ffffffffa03840b7
[272843.998258] IP: [<ffffffffa03840b7>] 0xffffffffa03840b7
[272843.998278] PGD 1c11067 PUD 1c12063 PMD 80afb5067 PTE 0
[272843.998306] Oops: 0010 [#1] SMP
[272843.998324] Modules linked in: rdma_ucm ib_ucm ib_srp scsi_transport_srp
scsi_tgt ib_srpt ib_mthca ib_ipa
[272843.998742] CPU: 1 PID: 32399 Comm: kworker/1:0 Not tainted
3.13.0-49-generic #81-Ubuntu
[272843.998758] Hardware name: HP ProLiant DL360e Gen8, BIOS P73 11/12/2013
[272843.998774] Workqueue: ib_cm cm_work_handler [ib_cm]
[272843.998789] task: ffff88080b72c800 ti: ffff880802522000 task.ti:
ffff880802522000
[272843.998827] RIP: 0010:[<ffffffffa03840b7>] [<ffffffffa03840b7>]
0xffffffffa03840b7
[272843.998870] RSP: 0018:ffff880802523c28 EFLAGS: 00010296
[272843.998893] RAX: ffff8800b851d801 RBX: ffff8807af8482b8 RCX:
0000000180200008
[272843.998929] RDX: 0000000180200009 RSI: 0000000080200008 RDI:
ffff88081f003900
[272843.998965] RBP: ffff880802523c30 R08: 0000000000000000 R09:
0000000000000001
[272843.999002] R10: ffffea0002e14740 R11: ffffffffa00e0b9a R12:
ffff88080953e400
[272843.999038] R13: ffff8807af8482b8 R14: ffff88080953e400 R15:
0000000000000000
[272843.999075] FS: 0000000000000000(0000) GS:ffff88083f420000(0000)
knlGS:0000000000000000
[272843.999113] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[272843.999136] CR2: ffffffffa03840b7 CR3: 00000008024f1000 CR4:
00000000000407e0
[272843.999173] Stack:
[272843.999191] ffff8807af540000 ffff880802523c60 ffffffffa0386425
ffff8807af8482b8
[272843.999245] ffff88080953e400 ffff88080acf9fa8 ffff880802523cf0
ffff880802523ca0
[272843.999297] ffffffffa0384f58 ffffffff810aacc4 ffff8807af8482b8
ffff8807af8482d0
[272843.999349] Call Trace:
[272843.999378] [<ffffffff810aacc4>] ? __wake_up+0x44/0x50
[272843.999406] [<ffffffffa03c436b>] ? cma_comp_exch+0x4b/0x60 [rdma_cm]
[272843.999432] [<ffffffffa03c6429>] ? cma_ib_handler+0xf9/0x230 [rdma_cm]
[272843.999460] [<ffffffffa01b2166>] ? cm_process_work+0x26/0x150 [ib_cm]
[272843.999487] [<ffffffffa01b4183>] ? cm_work_handler+0xa83/0x161c [ib_cm]
[272843.999515] [<ffffffff81083a82>] ? process_one_work+0x182/0x450
[272843.999540] [<ffffffff81084871>] ? worker_thread+0x121/0x410
[272843.999565] [<ffffffff81084750>] ? rescuer_thread+0x430/0x430
[272843.999590] [<ffffffff8108b5b2>] ? kthread+0xd2/0xf0
[272843.999615] [<ffffffff8108b4e0>] ? kthread_create_on_node+0x1c0/0x1c0
[272843.999641] [<ffffffff8173258c>] ? ret_from_fork+0x7c/0xb0
[272843.999666] [<ffffffff8108b4e0>] ? kthread_create_on_node+0x1c0/0x1c0
[272843.999691] Code: Bad RIP value.
[272843.999721] RIP [<ffffffffa03840b7>] 0xffffffffa03840b7
[272843.999749] RSP <ffff880802523c28>
[272843.999770] CR2: ffffffffa03840b7
"""
I got also this one (looks the same):
"""
[ 479.240278] BUG: unable to handle kernel paging request at ffffffffa04af0b7
[ 479.240453] IP: [<ffffffffa04af0b7>] 0xffffffffa04af0b7
[ 479.240572] PGD 1c11067 PUD 1c12063 PMD 80bccf067 PTE 0
[ 479.240849] Oops: 0010 [#1] SMP
[ 479.241014] Modules linked in: ip6table_filter ip6_tables iptable_filter
ip_tables ebtable_nat ebtables x_
[ 479.245546]
[ 479.245603] CPU: 2 PID: 257 Comm: kworker/2:1 Not tainted
3.13.0-49-generic #81-Ubuntu
[ 479.245668] Hardware name: HP ProLiant DL360e Gen8, BIOS P73 11/12/2013
[ 479.245734] Workqueue: ib_cm cm_work_handler [ib_cm]
[ 479.245847] task: ffff880811ad6000 ti: ffff880811420000 task.ti:
ffff880811420000
[ 479.245923] RIP: 0010:[<ffffffffa04af0b7>] [<ffffffffa04af0b7>]
0xffffffffa04af0b7
[ 479.246065] RSP: 0018:ffff880811421c28 EFLAGS: 00010296
[ 479.246138] RAX: ffff8807f6d85501 RBX: ffff8807e613a2b8 RCX:
0000000180200009
[ 479.246212] RDX: 000000018020000a RSI: 0000000080200009 RDI:
ffff88081f003900
[ 479.246287] RBP: ffff880811421c30 R08: 0000000000000000 R09:
0000000000000001
[ 479.246361] R10: ffffea001fdb6140 R11: ffffffffa00f7b9a R12:
ffff8807e6238c00
[ 479.246435] R13: ffff8807e613a2b8 R14: ffff8807e6238c00 R15:
0000000000000000
[ 479.246510] FS: 0000000000000000(0000) GS:ffff88083f440000(0000)
knlGS:0000000000000000
[ 479.246597] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 479.246669] CR2: ffffffffa04af0b7 CR3: 0000000811549000 CR4:
00000000000407e0
[ 479.246743] Stack:
[ 479.246811] ffff8807e6ac0000 ffff880811421c60 ffffffffa04b1425
ffff8807e613a2b8
[ 479.247113] ffff8807e6238c00 ffff88081218f6a8 ffff880811421cf0
ffff880811421ca0
[ 479.247412] ffffffffa04aff58 ffffffff810aacc4 ffff8807e613a2b8
ffff8807e613a2d0
[ 479.247712] Call Trace:
[ 479.247790] [<ffffffff810aacc4>] ? __wake_up+0x44/0x50
[ 479.247867] [<ffffffffa045436b>] ? cma_comp_exch+0x4b/0x60 [rdma_cm]
[ 479.247943] [<ffffffffa0456429>] ? cma_ib_handler+0xf9/0x230 [rdma_cm]
[ 479.248019] [<ffffffffa0247166>] ? cm_process_work+0x26/0x150 [ib_cm]
[ 479.248095] [<ffffffffa0249183>] ? cm_work_handler+0xa83/0x161c [ib_cm]
[ 479.248172] [<ffffffff81083a82>] ? process_one_work+0x182/0x450
[ 479.248247] [<ffffffff81084871>] ? worker_thread+0x121/0x410
[ 479.248321] [<ffffffff81084750>] ? rescuer_thread+0x430/0x430
[ 479.248396] [<ffffffff8108b5b2>] ? kthread+0xd2/0xf0
[ 479.248469] [<ffffffff8108b4e0>] ? kthread_create_on_node+0x1c0/0x1c0
[ 479.248546] [<ffffffff8173258c>] ? ret_from_fork+0x7c/0xb0
[ 479.248620] [<ffffffff8108b4e0>] ? kthread_create_on_node+0x1c0/0x1c0
[ 479.248693] Code: Bad RIP value.
[ 479.248871] RIP [<ffffffffa04af0b7>] 0xffffffffa04af0b7
[ 479.248999] RSP <ffff880811421c28>
[ 479.249068] CR2: ffffffffa04af0b7
"""
I'll be working on fixing this since I'm fixing also:
https://bugs.launchpad.net/ubuntu/+source/open-iscsi/+bug/1401575
By backporting TGT daemon to support iSER.
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