[openib-general] ib_uat kernel oops

[Arlin Davis]

Hi Hal,

I move from a 2.6.11 kernel to 2.6.12.3 and am now having some problems 
with IBAT. (svn 2919)

Running the simple example...

[ardavis at iclust-19 examples]$ ./uatt
uatt: main: uat test start
uatt: main: ib_at_route_by_ip: ret 0 errno 0 for request 1 id 1 1

[ardavis at iclust-19 examples]$
Message from syslogd at iclust-19 at Wed Jul 27 17:36:41 2005 ...
iclust-19 kernel: Oops: 0002 [1] SMP

Message from syslogd at iclust-19 at Wed Jul 27 17:36:41 2005 ...
iclust-19 kernel: CR2: 0000000000000000

Jul 27 17:36:41 iclust-19 kernel: Unable to handle kernel NULL pointer 
dereference at 0000000000000000 RIP:
Jul 27 17:36:41 iclust-19 kernel: 
<ffffffff88057310>{:ib_uat:ib_uat_callback+155}
Jul 27 17:36:41 iclust-19 kernel: PGD 34a77067 PUD 34a65067 PMD 0
Jul 27 17:36:41 iclust-19 kernel: Oops: 0002 [1] SMP
Jul 27 17:36:41 iclust-19 kernel: CPU 1
Jul 27 17:36:41 iclust-19 kernel: Modules linked in: ib_att ib_uat ib_at 
ib_ucm ib_cm ib_umad ib_uverbs ib_ipoib  ib_sa ib_mthca ib_mad ib_core
Jul 27 17:36:41 iclust-19 kernel: Pid: 2248, comm: ib_at_wq/1 Not 
tainted 2.6.12.3
Jul 27 17:36:41 iclust-19 kernel: RIP: 0010:[<ffffffff88057310>] 
<ffffffff88057310>{:ib_uat:ib_uat_callback+155}
Jul 27 17:36:41 iclust-19 kernel: RSP: 0018:ffff8100362ade38  EFLAGS: 
00010282
Jul 27 17:36:41 iclust-19 kernel: RAX: ffff8100386384b0 RBX: 
ffff81003e8a5e00 RCX: 0000000000000000
Jul 27 17:36:41 iclust-19 kernel: RDX: ffff81003e8a5e10 RSI: 
0000000000000001 RDI: ffff81003e8a5e00
Jul 27 17:36:41 iclust-19 kernel: RBP: ffff810038638480 R08: 
0000000000000000 R09: 0000000000000000
Jul 27 17:36:41 iclust-19 kernel: R10: ffff81003e8a5e00 R11: 
0000000000000050 R12: 0000000000000001
Jul 27 17:36:41 iclust-19 kernel: R13: 0000000000000292 R14: 
ffff81002da5de50 R15: ffffffff880523ed
Jul 27 17:36:41 iclust-19 kernel: FS:  0000000000000000(0000) 
GS:ffffffff8058e580(0000) knlGS:0000000000000000
Jul 27 17:36:41 iclust-19 kernel: CS:  0010 DS: 0018 ES: 0018 CR0: 
000000008005003b
Jul 27 17:36:41 iclust-19 kernel: CR2: 0000000000000000 CR3: 
0000000034a3b000 CR4: 00000000000006e0
Jul 27 17:36:41 iclust-19 kernel: Process ib_at_wq/1 (pid: 2248, 
threadinfo ffff8100362ac000, task ffff81003ea6e f50)
Jul 27 17:36:41 iclust-19 kernel: Stack: ffff81002da5de50 
ffff81002da5de78 ffff810038501880 ffffffff88052408
Jul 27 17:36:41 iclust-19 kernel:        ffff81002da5de70 
ffffffff8014363e ffff8100385018c0 ffff810038501898
Jul 27 17:36:41 iclust-19 kernel:        ffff8100385018a8 ffffffffffffffff
Jul 27 17:36:41 iclust-19 kernel: Call 
Trace:<ffffffff88052408>{:ib_at:req_comp_work+27} 
<ffffffff8014363e>{work er_thread+501}
Jul 27 17:36:41 iclust-19 kernel:        
<ffffffff8013019d>{default_wake_function+0} <ffffffff8013019d>{default_ 
wake_function+0}
Jul 27 17:36:41 iclust-19 kernel:        
<ffffffff80147520>{keventd_create_kthread+0} <ffffffff80143449>{worker_ 
thread+0}
Jul 27 17:36:41 iclust-19 kernel:        
<ffffffff80147520>{keventd_create_kthread+0} <ffffffff801474f3>{kthread 
+204}
Jul 27 17:36:41 iclust-19 kernel:        <ffffffff8010f1a3>{child_rip+8} 
<ffffffff80147520>{keventd_create_kthre ad+0}
Jul 27 17:36:41 iclust-19 kernel:        <ffffffff80147427>{kthread+0} 
<ffffffff8010f19b>{child_rip+0}
Jul 27 17:36:41 iclust-19 kernel:
Jul 27 17:36:41 iclust-19 kernel:
Jul 27 17:36:41 iclust-19 kernel: Code: 48 89 11 48 8b 48 08 48 8d 53 20 
48 89 43 20 48 89 50 08 48
Jul 27 17:36:41 iclust-19 kernel: RIP 
<ffffffff88057310>{:ib_uat:ib_uat_callback+155} RSP <ffff8100362ade38>
Jul 27 17:36:41 iclust-19 kernel: CR2: 0000000000000000
.

any ideas?

Thanks,

-arlin