Re: 2.6.9 oops in poll()?
From: Randy.Dunlap
Date: Wed Jan 05 2005 - 13:37:05 EST
Konrad Wojas wrote:
On Tue, Jan 04, 2005 at 02:45:38PM -0800, Randy.Dunlap wrote:
I don't see the Oops primary error/reason/fault message.
Can you dig it up?
Sorry, you're right, I looked in messages instead of kern.log:
Jan 3 07:07:26 wojas kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000000
Jan 3 07:07:26 wojas kernel: printing eip:
Jan 3 07:07:26 wojas kernel: c02b5513
Jan 3 07:07:26 wojas kernel: *pde = 00000000
Jan 3 07:07:26 wojas kernel: Oops: 0002 [#1]
Jan 3 07:07:26 wojas kernel: PREEMPT
Jan 3 07:07:26 wojas kernel: Modules linked in: sch_ingress cls_u32 sch_sfq sch_cbq ip6table_filter ip6t_LOG ip6_tables ipt_limit lp msr cpuid ipt_state ipt_MASQUERADE ipt_LOG iptable_mangle iptable_filter dummy af_packet es1371 ac97_codec pci_hotplug intel_agp floppy pcspkr rtc sd_mod reiserfs ext2 dm_mod capability commoncap tsdev mousedev joydev evdev wacom usbhid psmouse usb_storage uhci_hcd usbcore eeprom lm75 i2c_sensor i2c_dev i2c_piix4 i2c_core aha152x ipv6 binfmt_misc ip_nat_ftp iptable_nat ip_conntrack_ftp ip_conntrack mga agpgart snd_pcm_oss snd_mixer_oss snd_ens1371 snd_rawmidi snd_seq_device snd_pcm snd_timer snd_page_alloc snd_ac97_codec snd gameport ipt_REJECT ip_tables ne2k_pci 8390 via_rhine mii crc32 sound soundcore sg scsi_mod parport_pc parport ide_cd cdrom ext3 jbd mbcache ide_generic piix ide_disk ide_core unix fbcon font vesafb cfbcopyarea cfbimgblt cfbfillrect
Jan 3 07:07:26 wojas kernel: CPU: 0
Jan 3 07:07:26 wojas kernel: EIP: 0060:[__func__.4+64363/135712] Not tainted VLI
Jan 3 07:07:26 wojas kernel: EFLAGS: 00010246 (2.6.9-1-686)
Jan 3 07:07:26 wojas kernel: EIP is at 0xc02b5513
Jan 3 07:07:26 wojas kernel: eax: 00000000 ebx: c0325c00 ecx: c61e57e0 edx: d35b85e0
Jan 3 07:07:26 wojas kernel: esi: c46082b9 edi: c61e57e4 ebp: 00000056 esp: d5f35f1c
Jan 3 07:07:26 wojas kernel: ds: 007b es: 007b ss: 0068
Jan 3 07:07:26 wojas kernel: Process python (pid: 30488, threadinfo=d5f34000 task=c0f0faa0)
Jan 3 07:07:26 wojas kernel: Stack: c022db99 c61e57e0 d35b85e0 00000000 00000145 c016c995 c61e57e0 00000000
Jan 3 07:07:26 wojas kernel: c4608000 d5f35f64 d5f35f68 0000001a c016ca0a 00000063 c4608008 d5f35f64
Jan 3 07:07:26 wojas kernel: d5f35f68 d5f34000 00000000 00000002 00000000 c4608000 000001ff 082b0d90
Jan 3 07:07:26 wojas kernel: Call Trace:
Jan 3 07:07:26 wojas kernel: [sock_poll+41/64] sock_poll+0x29/0x40
Jan 3 07:07:26 wojas kernel: [do_pollfd+149/160] do_pollfd+0x95/0xa0
Jan 3 07:07:26 wojas kernel: [do_poll+106/208] do_poll+0x6a/0xd0
Jan 3 07:07:26 wojas kernel: [sys_poll+353/576] sys_poll+0x161/0x240
Jan 3 07:07:26 wojas kernel: [__pollwait+0/208] __pollwait+0x0/0xd0
Jan 3 07:07:26 wojas kernel: [syscall_call+7/11] syscall_call+0x7/0xb
Jan 3 07:07:26 wojas kernel: Code: 79 70 74 6f 2f 63 69 70 68 65 72 2e 63 00 69 6e 63 6c 75 64 65 2f 6c 69 6e 75 78 2f 63 72 79 70 74 6f 2e 68 00 6e 61 6d 65 20 20 <20> 20 20 20 20 20 20 3a 20 25 73 0a 00 6d 6f 64 75 6c 65 20 20
And it looks like you need to use
ksymoops -k /proc/kallsyms
to get the addresses converted to symbols.
Can you redo ksymoops like that, please?
Doesn't really look like that's helping..
ksymoops 2.4.9 on i686 2.6.9-1-686. Options used
-V (default)
-k /proc/kallsyms (specified)
-l /proc/modules (default)
-o /lib/modules/2.6.9-1-686/ (default)
-m /boot/System.map-2.6.9-1-686 (default)
Warning (read_ksyms): no kernel symbols in ksyms, is /proc/kallsyms a valid ksyms file?
No modules in ksyms, skipping objects
No ksyms, skipping lsmod
This probably needed to use /proc/kallsyms from the dying kernel,
which you most likely don't have....
I'm having trouble seeing what sock_poll() called (i.e., where EIP
register points to). In the /boot/System.map-2.6.9-1-686 file,
is anything near address 0xc02b5513 listed?
(or just send me that file privately)
Jan 3 07:07:26 wojas kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000000
Jan 3 07:07:26 wojas kernel: c02b5513
Jan 3 07:07:26 wojas kernel: *pde = 00000000
Jan 3 07:07:26 wojas kernel: Oops: 0002 [#1]
Jan 3 07:07:26 wojas kernel: CPU: 0
Jan 3 07:07:26 wojas kernel: EIP: 0060:[__func__.4+64363/135712] Not tainted VLI
Jan 3 07:07:26 wojas kernel: EFLAGS: 00010246 (2.6.9-1-686)
Jan 3 07:07:26 wojas kernel: eax: 00000000 ebx: c0325c00 ecx: c61e57e0 edx: d35b85e0
Jan 3 07:07:26 wojas kernel: esi: c46082b9 edi: c61e57e4 ebp: 00000056 esp: d5f35f1c
Jan 3 07:07:26 wojas kernel: ds: 007b es: 007b ss: 0068
Jan 3 07:07:26 wojas kernel: Stack: c022db99 c61e57e0 d35b85e0 00000000 00000145 c016c995 c61e57e0 00000000
Jan 3 07:07:26 wojas kernel: c4608000 d5f35f64 d5f35f68 0000001a c016ca0a 00000063 c4608008 d5f35f64
Jan 3 07:07:26 wojas kernel: d5f35f68 d5f34000 00000000 00000002 00000000 c4608000 000001ff 082b0d90
Jan 3 07:07:26 wojas kernel: Call Trace:
Warning (Oops_read): Code line not seen, dumping what data is available
ebx; c0325c00 <devinet_sysctl+460/4e0>
ecx; c61e57e0 <pg0+5e3b7e0/3fc54400>
edx; d35b85e0 <pg0+1320e5e0/3fc54400>
esi; c46082b9 <pg0+425e2b9/3fc54400>
edi; c61e57e4 <pg0+5e3b7e4/3fc54400>
esp; d5f35f1c <pg0+15b8bf1c/3fc54400>
Jan 3 07:07:26 wojas kernel: Code: 79 70 74 6f 2f 63 69 70 68 65 72 2e 63 00 69 6e 63 6c 75 64 65 2f 6c 69 6e 75 78 2f 63 72 79 70 74 6f 2e 68 00 6e 61 6d 65 20 20 <20> 20 20 20 20 20 20 3a 20 25 73 0a 00 6d 6f 64 75 6c 65 20 20
Using defaults from ksymoops -t elf32-i386 -a i386
Code; ffffffd5 <__kernel_rt_sigreturn+1b95/????>
00000000 <_EIP>:
Code; ffffffd5 <__kernel_rt_sigreturn+1b95/????>
0: 79 70 jns 72 <_EIP+0x72>
Code; ffffffd7 <__kernel_rt_sigreturn+1b97/????>
2: 74 6f je 73 <_EIP+0x73>
Code; ffffffd9 <__kernel_rt_sigreturn+1b99/????>
4: 2f das
Code; ffffffda <__kernel_rt_sigreturn+1b9a/????>
5: 63 69 70 arpl %bp,0x70(%ecx)
Code; ffffffdd <__kernel_rt_sigreturn+1b9d/????>
8: 68 65 72 2e 63 push $0x632e7265
Code; ffffffe2 <__kernel_rt_sigreturn+1ba2/????>
d: 00 69 6e add %ch,0x6e(%ecx)
Code; ffffffe5 <__kernel_rt_sigreturn+1ba5/????>
10: 63 6c 75 64 arpl %bp,0x64(%ebp,%esi,2)
Code; ffffffe9 <__kernel_rt_sigreturn+1ba9/????>
14: 65 gs
Code; ffffffea <__kernel_rt_sigreturn+1baa/????>
15: 2f das
Code; ffffffeb <__kernel_rt_sigreturn+1bab/????>
16: 6c insb (%dx),%es:(%edi)
Code; ffffffec <__kernel_rt_sigreturn+1bac/????>
17: 69 6e 75 78 2f 63 72 imul $0x72632f78,0x75(%esi),%ebp
Code; fffffff3 <__kernel_rt_sigreturn+1bb3/????>
1e: 79 70 jns 90 <_EIP+0x90>
Code; fffffff5 <__kernel_rt_sigreturn+1bb5/????>
20: 74 6f je 91 <_EIP+0x91>
Code; fffffff7 <__kernel_rt_sigreturn+1bb7/????>
22: 2e cs
Code; fffffff8 <__kernel_rt_sigreturn+1bb8/????>
23: 68 00 6e 61 6d push $0x6d616e00
Code; fffffffd <__kernel_rt_sigreturn+1bbd/????>
28: 65 20 20 and %ah,%gs:(%eax)
Code; 00000000 Before first symbol
2b: 20 20 and %ah,(%eax)
Code; 00000002 Before first symbol
2d: 20 20 and %ah,(%eax)
Code; 00000004 Before first symbol
2f: 20 20 and %ah,(%eax)
Code; 00000006 Before first symbol
31: 20 3a and %bh,(%edx)
Code; 00000008 Before first symbol
33: 20 25 73 0a 00 6d and %ah,0x6d000a73
Code; 0000000e Before first symbol
39: 6f outsl %ds:(%esi),(%dx)
Code; 0000000f Before first symbol
3a: 64 fs
Code; 00000010 Before first symbol
3b: 75 6c jne a9 <_EIP+0xa9>
Code; 00000012 Before first symbol
3d: 65 20 20 and %ah,%gs:(%eax)
2 warnings issued. Results may not be reliable.
--
~Randy
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/