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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Hal,<br>
<br>
I was attempting to call ib_at_route_by_ip() in sync mode and get the following
oops: <br>
<br>
You can change the att.c (line 193) example as follow to duplicate:<br>
<br>
r = ib_at_route_by_ip(0x1400a8c0, 0, 0, 0,<br>
att_rt + i, NULL, NULL);<br>
<br>
I will go back to async mode for now.<br>
<br>
Thanks,<br>
<br>
-arlin<br>
<br>
Jul 11 15:01:17 iclust-20 kernel: Unable to handle kernel NULL pointer
dereference at 0000000000000000 RIP:<br>
Jul 11 15:01:17 iclust-20 kernel:
<ffffffff880a449c>{:ib_uat:ib_uat_route_by_ip+204}<br>
Jul 11 15:01:17 iclust-20 kernel: PGD 38fa3067 PUD 2e7c7067 PMD 0<br>
Jul 11 15:01:17 iclust-20 kernel: Oops: 0000 [1] SMP<br>
Jul 11 15:01:17 iclust-20 kernel: CPU 0<br>
Jul 11 15:01:17 iclust-20 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 dm_snapshot
dm_zero dm_mirror ext3 jbd dm_mod<br>
Jul 11 15:01:17 iclust-20 kernel: Pid: 6320, comm: dtestib Tainted:
P 2.6.11<br>
Jul 11 15:01:17 iclust-20 kernel: RIP: 0010:[<ffffffff880a449c>]
<ffffffff880a449c>{:ib_uat:ib_uat_route_by_ip+204}<br>
Jul 11 15:01:17 iclust-20 kernel: RSP: 0018:ffff810030c9be78 EFLAGS:
00010282<br>
Jul 11 15:01:17 iclust-20 kernel: RAX: 0000000000000000 RBX: 00000000fffffff4
RCX: 0000000000040000<br>
Jul 11 15:01:17 iclust-20 kernel: RDX: 00000000ffffff01 RSI: 0000000000000292
RDI: ffffffff80453f80<br>
Jul 11 15:01:17 iclust-20 kernel: RBP: ffff81002f342380 R08: ffff810038d54d80
R09: ffff81003e498c80<br>
Jul 11 15:01:17 iclust-20 kernel: R10: 00000000ffffffff R11: 0000000000000000
R12: ffff81003e498c80<br>
Jul 11 15:01:17 iclust-20 kernel: R13: ffff810038d54d80 R14: ffff810030c9bf50
R15: 00007ffffffff7c0<br>
Jul 11 15:01:17 iclust-20 kernel: FS: 00002aaaaabc53e0(0000)
GS:ffffffff80580280(0000) knlGS:0000000000000000<br>
Jul 11 15:01:17 iclust-20 kernel: CS: 0010 DS: 0000 ES: 0000 CR0:
000000008005003b<br>
Jul 11 15:01:17 iclust-20 kernel: CR2: 0000000000000000 CR3: 0000000033975000
CR4: 00000000000006e0<br>
Jul 11 15:01:17 iclust-20 kernel: Process dtestib (pid: 6320, threadinfo
ffff810030c9a000, task ffff810038a88b00)<br>
Jul 11 15:01:17 iclust-20 kernel: Stack: ffff81003e890940 ffff810030c9bf70
2ca2070a1300a8c0 0000000000000000<br>
Jul 11 15:01:17 iclust-20 kernel:
0000000000518cb8 0000000000000000 00007ffffffff210 ffffffff88099b82<br>
Jul 11 15:01:17 iclust-20 kernel:
ffff810039167820 0000000000000030<br>
Jul 11 15:01:17 iclust-20 kernel: Call
Trace:<ffffffff88099b82>{:ib_ucm:ib_ucm_create_id+130}
<ffffffff880a4eed>{:ib_uat:ib_uat_write+157}<br>
Jul 11 15:01:17 iclust-20 kernel:
<ffffffff8017aca4>{vfs_write+196} <ffffffff8017ae03>{sys_write+83}<br>
Jul 11 15:01:17 iclust-20 kernel:
<ffffffff8010e30a>{system_call+126}<br>
Jul 11 15:01:17 iclust-20 kernel:<br>
Jul 11 15:01:17 iclust-20 kernel: Code: 48 8b 00 48 89 45 78 48 8b 44 24 28 48
8b 40 08 48 89 85 80<br>
Jul 11 15:01:17 iclust-20 kernel: RIP
<ffffffff880a449c>{:ib_uat:ib_uat_route_by_ip+204} RSP
<ffff810030c9be78><br>
Jul 11 15:01:17 iclust-20 kernel: CR2: 0000000000000000</span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
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