Re: OOPS in cfg80211_conn_work
From: Parag Warudkar
Date: Fri Oct 30 2009 - 06:57:39 EST
On Fri, 30 Oct 2009, Johannes Berg wrote:
> On Thu, 2009-10-29 at 19:17 -0400, Parag Warudkar wrote:
> > Oct 29 18:59:06 parag-laptop kernel: [ 143.180037] wlan0:
> > deauthenticating from 00:16:01:d6:6f:12 by local choice (reason=3)
> > Oct 29 18:59:06 parag-laptop kernel: [ 143.181137] wlan0: direct
> > probe to AP 00:16:01:d6:6f:12 (try 1)
>
> sorry, I can't read this log. please provide a non-wrapped version
>
How does this look? (Sorry sent it in a rush earlier.)
Below also is a disassembly of cfg80211_conn_work.
Thanks
Parag
OOPS
----
Oct 29 18:59:06 parag-laptop kernel: [ 143.181148] wlan0: deauthenticating from 00:16:01:d6:6f:12 by local choice (reason=3)
Oct 29 18:59:06 parag-laptop kernel: [ 143.203375] BUG: unable to handle kernel NULL pointer dereference at (null)
Oct 29 18:59:06 parag-laptop kernel: [ 143.203432] IP: [<ffffffffa0139161>] cfg80211_conn_work+0xb1/0x140 [cfg80211]
Oct 29 18:59:06 parag-laptop kernel: [ 143.203476] PGD 138abc067 PUD 136d87067 PMD 0
Oct 29 18:59:06 parag-laptop kernel: [ 143.203530] Oops: 0000 [#1] SMP
Oct 29 18:59:06 parag-laptop kernel: [ 143.203571] last sysfs file: /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/controlC1/uevent
Oct 29 18:59:06 parag-laptop kernel: [ 143.203597] CPU 0
Oct 29 18:59:06 parag-laptop kernel: [ 143.203629] Modules linked in: aes_generic radeon ttm drm_kms_helper drm i2c_algo_bit cfbcopyarea cfbimgblt cfbfillrect binfmt_misc snd_hda_codec_atihdmi rfcomm snd_hda_codec_analog sco bnep ppdev l2cap snd_hda_intel arc4 snd_hda_codec snd_pcm_oss snd_mixer_oss snd_hwdep snd_seq_dummy snd_pcm snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event iwlagn iptable_filter ext3 snd_seq iwlcore snd_timer led_class snd_seq_device ip_tables jbd snd mac80211 psmouse btusb x_tables tpm_infineon soundcore serio_raw bluetooth snd_page_alloc cfg80211 tpm tpm_bios evdev lp parport ext4 mbcache jbd2 fuse ahci libata video output intel_agp e1000e
Oct 29 18:59:06 parag-laptop kernel: [ 143.204560] Pid: 9, comm: events/0 Not tainted 2.6.32-rc5 #2 HP EliteBook 8530p
Oct 29 18:59:06 parag-laptop kernel: [ 143.204588] RIP: 0010:[<ffffffffa0139161>] [<ffffffffa0139161>] cfg80211_conn_work+0xb1/0x140 [cfg80211]
Oct 29 18:59:06 parag-laptop kernel: [ 143.204634] RSP: 0000:ffff88013f8b5dc0 EFLAGS: 00010246
Oct 29 18:59:06 parag-laptop kernel: [ 143.204656] RAX: 0000000000000000 RBX: ffff88013e8db690 RCX: ffff88013cb80118
Oct 29 18:59:06 parag-laptop kernel: [ 143.204679] RDX: 0000000000000000 RSI: 0000000000000282 RDI: ffff88013e8db690
Oct 29 18:59:06 parag-laptop kernel: [ 143.204702] RBP: ffff88013f8b5e30 R08: 0000000000000000 R09: 0000000000000001
Oct 29 18:59:06 parag-laptop kernel: [ 143.204724] R10: 0000000000000000 R11: ffff880028295718 R12: ffff88013e8db6b8
Oct 29 18:59:06 parag-laptop kernel: [ 143.204747] R13: ffff88013cb800a8 R14: ffff88013cb80000 R15: ffff88013f8b5df0
Oct 29 18:59:06 parag-laptop kernel: [ 143.204770] FS: 0000000000000000(0000) GS:ffff880028200000(0000) knlGS:0000000000000000
Oct 29 18:59:06 parag-laptop kernel: [ 143.204799] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
Oct 29 18:59:06 parag-laptop kernel: [ 143.204820] CR2: 0000000000000000 CR3: 000000013dde3000 CR4: 00000000000406f0
Oct 29 18:59:06 parag-laptop kernel: [ 143.204843] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Oct 29 18:59:06 parag-laptop kernel: [ 143.204866] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Oct 29 18:59:06 parag-laptop kernel: [ 143.204889] Process events/0 (pid: 9, threadinfo ffff88013f8b4000, task ffff88013f885980)
Oct 29 18:59:06 parag-laptop kernel: [ 143.204917] Stack:
Oct 29 18:59:06 parag-laptop kernel: [ 143.204936] ffff88013f8b5dc0 ffff88013f8b5dc0 0000000000000282 ffffffff8162afb8
Oct 29 18:59:06 parag-laptop kernel: [ 143.204996] <0> ffff88013cb80018 ffff88013cb80088 ffff880028218040 ffff88013f8b5fd8
Oct 29 18:59:06 parag-laptop kernel: [ 143.205085] <0> ffff88013f8b5e10 ffff88013cb80130 ffff880028218040 ffffffffa01390b0
Oct 29 18:59:06 parag-laptop kernel: [ 143.205190] Call Trace:
Oct 29 18:59:06 parag-laptop kernel: [ 143.205215] [<ffffffffa01390b0>] ? cfg80211_conn_work+0x0/0x140 [cfg80211]
Oct 29 18:59:06 parag-laptop kernel: [ 143.205242] [<ffffffff8106c86f>] worker_thread+0x17f/0x2c0
Oct 29 18:59:06 parag-laptop kernel: [ 143.205265] [<ffffffff810710d0>] ? autoremove_wake_function+0x0/0x40
Oct 29 18:59:06 parag-laptop kernel: [ 143.205289] [<ffffffff8106c6f0>] ? worker_thread+0x0/0x2c0
Oct 29 18:59:06 parag-laptop kernel: [ 143.205311] [<ffffffff81070cfe>] kthread+0x8e/0xa0
Oct 29 18:59:06 parag-laptop kernel: [ 143.205334] [<ffffffff81012f2a>] child_rip+0xa/0x20
Oct 29 18:59:06 parag-laptop kernel: [ 143.205356] [<ffffffff81070c70>] ? kthread+0x0/0xa0
Oct 29 18:59:06 parag-laptop kernel: [ 143.205378] [<ffffffff81012f20>] ? child_rip+0x0/0x20
Oct 29 18:59:06 parag-laptop kernel: [ 143.205399] Code: 63 28 4c 89 e7 e8 c0 02 2b e1 48 8b 43 20 f6 40 48 01 74 c6 83 bb 8c 00 00 00 01 75 bd 48 8b 83 90 00 00 00 48 89 df 48 8b 40 08 <8b> 10 41 89 17 0f b7 40 04 66 41 89 47 04 e8 fc ee ff ff 85 c0
Oct 29 18:59:06 parag-laptop kernel: [ 143.206242] RIP [<ffffffffa0139161>] cfg80211_conn_work+0xb1/0x140 [cfg80211]
Oct 29 18:59:06 parag-laptop kernel: [ 143.206286] RSP <ffff88013f8b5dc0>
Oct 29 18:59:06 parag-laptop kernel: [ 143.206306] CR2: 0000000000000000
Oct 29 18:59:06 parag-laptop kernel: [ 143.206327] ---[ end trace ccb079f99bd67991 ]---
Oct 29 18:59:58 parag-laptop kernel: Kernel logging (proc) stopped.
Disassembly
-----------
00000000000140b0 <cfg80211_conn_work>:
140b0: 55 push %rbp
140b1: 48 89 e5 mov %rsp,%rbp
140b4: 41 57 push %r15
140b6: 4c 8d 7d c0 lea -0x40(%rbp),%r15
140ba: 41 56 push %r14
140bc: 4c 8d b7 d0 fe ff ff lea -0x130(%rdi),%r14
140c3: 41 55 push %r13
140c5: 4d 8d ae a8 00 00 00 lea 0xa8(%r14),%r13
140cc: 41 54 push %r12
140ce: 53 push %rbx
140cf: 48 89 fb mov %rdi,%rbx
140d2: 48 83 ec 48 sub $0x48,%rsp
140d6: e8 00 00 00 00 callq 140db <cfg80211_conn_work+0x2b>
140db: 49 8d 46 18 lea 0x18(%r14),%rax
140df: 48 89 c7 mov %rax,%rdi
140e2: 48 89 45 b0 mov %rax,-0x50(%rbp)
140e6: e8 00 00 00 00 callq 140eb <cfg80211_conn_work+0x3b>
140eb: 49 8d 86 88 00 00 00 lea 0x88(%r14),%rax
140f2: 48 89 45 b8 mov %rax,-0x48(%rbp)
140f6: 48 89 c7 mov %rax,%rdi
140f9: e8 00 00 00 00 callq 140fe <cfg80211_conn_work+0x4e>
140fe: 48 8b 9b 78 ff ff ff mov -0x88(%rbx),%rbx
14105: 48 83 eb 10 sub $0x10,%rbx
14109: eb 15 jmp 14120 <cfg80211_conn_work+0x70>
1410b: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
14110: 4c 89 e7 mov %r12,%rdi
14113: e8 00 00 00 00 callq 14118 <cfg80211_conn_work+0x68>
14118: 48 8b 5b 10 mov 0x10(%rbx),%rbx
1411c: 48 83 eb 10 sub $0x10,%rbx
14120: 48 8b 43 10 mov 0x10(%rbx),%rax
14124: 0f 18 08 prefetcht0 (%rax)
14127: 48 8d 43 10 lea 0x10(%rbx),%rax
1412b: 49 39 c5 cmp %rax,%r13
1412e: 0f 84 7c 00 00 00 je 141b0 <cfg80211_conn_work+0x100>
14134: 4c 8d 63 28 lea 0x28(%rbx),%r12
14138: 4c 89 e7 mov %r12,%rdi
1413b: e8 00 00 00 00 callq 14140 <cfg80211_conn_work+0x90>
14140: 48 8b 43 20 mov 0x20(%rbx),%rax
14144: f6 40 48 01 testb $0x1,0x48(%rax)
14148: 74 c6 je 14110 <cfg80211_conn_work+0x60>
1414a: 83 bb 8c 00 00 00 01 cmpl $0x1,0x8c(%rbx)
14151: 75 bd jne 14110 <cfg80211_conn_work+0x60>
14153: 48 8b 83 90 00 00 00 mov 0x90(%rbx),%rax
1415a: 48 89 df mov %rbx,%rdi
1415d: 48 8b 40 08 mov 0x8(%rax),%rax
14161: 8b 10 mov (%rax),%edx
14163: 41 89 17 mov %edx,(%r15)
14166: 0f b7 40 04 movzwl 0x4(%rax),%eax
1416a: 66 41 89 47 04 mov %ax,0x4(%r15)
1416f: e8 fc ee ff ff callq 13070 <cfg80211_conn_do_work>
14174: 85 c0 test %eax,%eax
14176: 74 98 je 14110 <cfg80211_conn_work+0x60>
14178: 48 8b 7b 20 mov 0x20(%rbx),%rdi
1417c: 45 31 c9 xor %r9d,%r9d
1417f: 48 c7 44 24 10 00 00 movq $0x0,0x10(%rsp)
14186: 00 00
14188: c7 44 24 08 00 00 00 movl $0x0,0x8(%rsp)
1418f: 00
14190: c7 04 24 01 00 00 00 movl $0x1,(%rsp)
14197: 45 31 c0 xor %r8d,%r8d
1419a: 31 c9 xor %ecx,%ecx
1419c: 31 d2 xor %edx,%edx
1419e: 4c 89 fe mov %r15,%rsi
141a1: e8 00 00 00 00 callq 141a6 <cfg80211_conn_work+0xf6>
141a6: e9 65 ff ff ff jmpq 14110 <cfg80211_conn_work+0x60>
141ab: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
141b0: 48 8b 7d b8 mov -0x48(%rbp),%rdi
141b4: e8 00 00 00 00 callq 141b9 <cfg80211_conn_work+0x109>
141b9: 49 81 fe 00 f0 ff ff cmp $0xfffffffffffff000,%r14
141c0: 77 27 ja 141e9 <cfg80211_conn_work+0x139>
141c2: 4d 85 f6 test %r14,%r14
141c5: 74 22 je 141e9 <cfg80211_conn_work+0x139>
141c7: 48 8b 7d b0 mov -0x50(%rbp),%rdi
141cb: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
141d0: e8 00 00 00 00 callq 141d5 <cfg80211_conn_work+0x125>
141d5: e8 00 00 00 00 callq 141da <cfg80211_conn_work+0x12a>
141da: 48 83 c4 48 add $0x48,%rsp
141de: 5b pop %rbx
141df: 41 5c pop %r12
141e1: 41 5d pop %r13
141e3: 41 5e pop %r14
141e5: 41 5f pop %r15
141e7: c9 leaveq
141e8: c3 retq
141e9: 0f 0b ud2a
141eb: eb fe jmp 141eb <cfg80211_conn_work+0x13b>
141ed: 0f 1f 00 nopl (%rax)
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