[openib-general] 2.6.14 & ib_umad segfault

[Troy Benjegerdes]

2.6.14, amd64, svn 5193

This happens when loading 'ib_umad'

[  282.510929] Unable to handle kernel paging request at 000000000e70010c RIP:
[  282.516469] <ffffffff801e8531>{kref_get+1}
[  282.524371] PGD d6f9d067 PUD d6825067 PMD 0
[  282.529521] Oops: 0000 [1] SMP
[  282.533312] CPU 0
[  282.535745] Modules linked in: ib_umad ipv6 ide_cd cdrom ide_disk ib_mthca ib_mad ib_core sata_promise ohci_hcd i2c_amd756 hw_random i2c_amd8111 i2c_core generic amd74xx ide_core ext3 jbd mbcache forcedeth tg3 bnx2 crc32 e1000 af_packet nfs lockd sunrpc libafs sd_mod sata_nv libata arcmsr scsi_mod unix
[  282.568292] Pid: 2504, comm: modprobe Tainted: P      2.6.14 #1
[  282.575362] RIP: 0010:[<ffffffff801e8531>] <ffffffff801e8531>{kref_get+1}
[  282.583283] RSP: 0000:ffff8100d6f09d08  EFLAGS: 00010206
[  282.589912] RAX: ffff8100d7b07220 RBX: 000000000e7000f0 RCX: 000000000e7000f0
[  282.598470] RDX: ffff8100d7b07220 RSI: ffffffff80315f0a RDI: 000000000e70010c
[  282.607040] RBP: ffffffff80315f03 R08: 0000000000000002 R09: 0000000000000000
[  282.615584] R10: ffff8100d7a8eb40 R11: 00000000000000a0 R12: 00000000fffffff4
[  282.624178] R13: 000000000e7000f0 R14: ffff8100d7812150 R15: ffff8100d7a8eb50
[  282.632731] FS:  00002aaaaae00ae0(0000) GS:ffffffff80402800(0000) knlGS:0000000000000000
[  282.642470] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[  282.649379] CR2: 000000000e70010c CR3: 00000000d725e000 CR4: 00000000000006e0
[  282.657922] Process modprobe (pid: 2504, threadinfo ffff8100d6f08000, task ffff8100d7b9b4e0)
[  282.668073] Stack: 000000000e7000f0 ffffffff801e7b42 ffff8100d7b07200 ffffffff801c1049
[  282.677510]        ffff8100d7262198 ffff8100d7a8eb40 00000000fffffff4 ffff8100d7a3f600
[  282.687205]        000000000e700000 ffffffff801c10f3
[  282.693303] Call Trace:<ffffffff801e7b42>{kobject_get+18} <ffffffff801c1049>{sysfs_add_link+121}
[  282.703945]        <ffffffff801c10f3>{sysfs_create_link+83} <ffffffff80250949>{class_device_add+297}
[  282.714981]        <ffffffff80250b3e>{class_device_create+238} <ffffffff801985cb>{new_inode+171}
[  282.725568]        <ffffffff801bf273>{sysfs_create+195} <ffffffff80195a11>{dput+33}
[  282.736567]        <ffffffff802517a6>{kobj_map+102} <ffffffff80186bf0>{exact_lock+0}
[  282.745916]        <ffffffff80186be0>{exact_match+0} <ffffffff882fa1fe>{:ib_umad:ib_umad_init_port+286}
[  282.757279]        <ffffffff882fa559>{:ib_umad:ib_umad_add_one+153} <ffffffff8825b47c>{:ib_core:ib_register_client+124}
[  282.770281]        <ffffffff882ff090>{:ib_umad:ib_umad_init+144} <ffffffff80152347>{sys_init_module+247}
[  282.781703]        <ffffffff8010db7a>{system_call+126}
[  282.788294]
[  282.788295] Code: 8b 07 48 89 fb 85 c0 75 26 b9 20 00 00 00 48 c7 c2 95 56 31
[  282.798966] RIP <ffffffff801e8531>{kref_get+1} RSP <ffff8100d6f09d08>
[  282.806739] CR2: 000000000e70010c
[  282.810701]
opteron1:~# cat /proc/version
Linux version 2.6.14 (troy at octeropt.scl.ameslab.gov) (gcc version 3.3.6 (Debian 1:3.3.6-7)) #1 SMP Sun Oct 30 19:36:53 CST 2005