[openib-general] uCM kernel oops

[Arlin Davis]

Hi Libor,

I am running uCM and uAT with uDAPL and occasionally hit the following. 
Can you take a look?

Jul 19 11:10:17 iclust-19 kernel: UAT: Created struct
Jul 19 11:10:17 iclust-19 kernel: UCM: Created struct
Jul 19 11:10:17 iclust-19 kernel: UAT: Write. cmd <2> in <40> out <8> 
len <48>
Jul 19 11:10:17 iclust-19 kernel: UAT: Allocated context ID <4>
Jul 19 11:10:17 iclust-19 kernel: UAT: Write. cmd <7> in <8> out <32> 
len <16>
Jul 19 11:10:17 iclust-19 kernel: UAT: Destroyed context ID <4>
Jul 19 11:10:17 iclust-19 kernel: UCM: Write. cmd <0> in <8> out <4> len 
<16>
Jul 19 11:10:17 iclust-19 kernel: UCM: Allocated CM ID <2>
Jul 19 11:10:17 iclust-19 kernel: UAT: Write. cmd <0> in <40> out <8> 
len <48>
Jul 19 11:10:17 iclust-19 kernel: UAT: Allocated context ID <5>
Jul 19 11:10:17 iclust-19 kernel: UAT: Write. cmd <7> in <8> out <32> 
len <16>
Jul 19 11:10:17 iclust-19 kernel: UAT: Destroyed context ID <5>
Jul 19 11:10:17 iclust-19 kernel: UAT: Write. cmd <1> in <48> out <8> 
len <56>
Jul 19 11:10:17 iclust-19 kernel: UAT: Allocated context ID <6>
Jul 19 11:10:17 iclust-19 kernel: UAT: Write. cmd <7> in <8> out <32> 
len <16>
Jul 19 11:10:17 iclust-19 kernel: UAT: Destroyed context ID <6>
Jul 19 11:10:17 iclust-19 kernel: UCM: Write. cmd <5> in <64> out <0> 
len <72>
Jul 19 11:10:17 iclust-19 kernel: UCM: Event. CM ID <2> event <3>
Jul 19 11:10:17 iclust-19 kernel: UCM: Write. cmd <16> in <32> out <184> 
len <40>
Jul 19 11:10:17 iclust-19 kernel: UCM: Write. cmd <7> in <16> out <0> 
len <24>
Jul 19 11:10:18 iclust-19 kernel: UCM: Write. cmd <1> in <4> out <0> len 
<12>
Jul 19 11:10:18 iclust-19 kernel: UCM: Event. CM ID <2> event <7>
Jul 19 11:10:18 iclust-19 kernel: UCM: Destroyed CM ID <2>
Jul 19 11:10:18 iclust-19 kernel: Unable to handle kernel paging request 
at 0000000000100108 RIP:
Jul 19 11:10:18 iclust-19 kernel: 
<ffffffff880a10c8>{:ib_ucm:ib_ucm_ctx_put+120}
Jul 19 11:10:18 iclust-19 kernel: PGD 3f992067 PUD 0
Jul 19 11:10:18 iclust-19 kernel: Oops: 0002 [1] SMP
Jul 19 11:10:18 iclust-19 kernel: CPU 1
Jul 19 11:10:18 iclust-19 kernel: Modules linked in: ib_att ib_uat ib_at 
ib_ucm ib_cm ib_umad ib_uverbs ib_ipoib ib_sa autofs4 ib_mthca ib_mad 
ib_core dm_snapshot dm_zero dm_mirror ext3 jbd dm_mod
Jul 19 11:10:18 iclust-19 kernel: Pid: 2265, comm: ib_cm/1 Tainted: 
P      2.6.11
Jul 19 11:10:18 iclust-19 kernel: RIP: 0010:[<ffffffff880a10c8>] 
<ffffffff880a10c8>{:ib_ucm:ib_ucm_ctx_put+120}
Jul 19 11:10:18 iclust-19 kernel: RSP: 0018:ffff810035a75d18  EFLAGS: 
00010292
Jul 19 11:10:18 iclust-19 kernel: RAX: 0000000000100100 RBX: 
ffffffff880a48a0 RCX: ffff81003f902850
Jul 19 11:10:18 iclust-19 kernel: RDX: 0000000000200200 RSI: 
ffff81003590a8f8 RDI: ffff81003f902300
Jul 19 11:10:18 iclust-19 kernel: RBP: ffff81003f902800 R08: 
ffff81003590a8f8 R09: 0000000000000000
Jul 19 11:10:18 iclust-19 kernel: R10: 0000000000000000 R11: 
0000000000000000 R12: ffff81003f902840
Jul 19 11:10:18 iclust-19 kernel: R13: 0000000000000000 R14: 
ffff81003f902800 R15: ffff8100380fc400
Jul 19 11:10:18 iclust-19 kernel: FS:  0000000000000000(0000) 
GS:ffffffff8058c580(0000) knlGS:0000000000000000
Jul 19 11:10:18 iclust-19 kernel: CS:  0010 DS: 0018 ES: 0018 CR0: 
000000008005003b
Jul 19 11:10:18 iclust-19 kernel: CR2: 0000000000100108 CR3: 
0000000037016000 CR4: 00000000000006e0
Jul 19 11:10:18 iclust-19 kernel: Process ib_cm/1 (pid: 2265, threadinfo 
ffff810035a74000, task ffff810035850e90)
Jul 19 11:10:18 iclust-19 kernel: Stack: 0000000000000002 
ffff81003b9b7b80 ffff810038104b58 ffffffff880a183f
Jul 19 11:10:18 iclust-19 kernel:        ffff810035850e90 
ffff8100380fc400 ffff8100380fc400 ffff810038104ac0
Jul 19 11:10:18 iclust-19 kernel:        ffff8100380fc470 0000000000000292
Jul 19 11:10:18 iclust-19 kernel: Call 
Trace:<ffffffff880a183f>{:ib_ucm:ib_ucm_event_handler+1199}
Jul 19 11:10:18 iclust-19 kernel:        
<ffffffff8809b850>{:ib_cm:cm_work_handler+0} 
<ffffffff8809aada>{:ib_cm:cm_process_work+26}
Jul 19 11:10:19 iclust-19 kernel:        
<ffffffff8809ad52>{:ib_cm:cm_dreq_handler+418} 
<ffffffff8809c7f8>{:ib_cm:cm_work_handler+4008}
Jul 19 11:10:19 iclust-19 kernel:        
<ffffffff80133663>{__wake_up+67} 
<ffffffff8809b850>{:ib_cm:cm_work_handler+0}
Jul 19 11:10:19 iclust-19 kernel:        
<ffffffff80148510>{worker_thread+496} 
<ffffffff801335a0>{default_wake_function+0}
Jul 19 11:10:19 iclust-19 kernel:        
<ffffffff801335f0>{__wake_up_common+64} 
<ffffffff801335a0>{default_wake_function+0}
Jul 19 11:10:19 iclust-19 kernel:        
<ffffffff8014c840>{keventd_create_kthread+0} 
<ffffffff80148320>{worker_thread+0}
Jul 19 11:10:19 iclust-19 kernel:        
<ffffffff8014c840>{keventd_create_kthread+0} <ffffffff8014c7f9>{kthread+217}
Jul 19 11:10:19 iclust-19 kernel:        <ffffffff8010eec3>{child_rip+8} 
<ffffffff8014c840>{keventd_create_kthread+0}
Jul 19 11:10:19 iclust-19 kernel:        <ffffffff8014c720>{kthread+0} 
<ffffffff8010eebb>{child_rip+0}
Jul 19 11:10:19 iclust-19 kernel:
Jul 19 11:10:19 iclust-19 kernel:
Jul 19 11:10:19 iclust-19 kernel: Code: 48 89 50 08 48 89 02 48 c7 41 08 
00 02 20 00 48 c7 45 50 00
Jul 19 11:10:19 iclust-19 kernel: RIP 
<ffffffff880a10c8>{:ib_ucm:ib_ucm_ctx_put+120} RSP <ffff810035a75d18>
Jul 19 11:10:19 iclust-19 kernel: CR2: 0000000000100108

Thanks,

-arlin