After seeing tons of ghost entries in an autofs4 mount pount I
stopped the automounter and restarted it again. The first Oops
was triggered then. After noticing that it didn't work I stopped
autofs again and (after still seeing a mount) umounted by hand.
That caused the second Oops. The reboot hanged, had to power cycle.
This all reminds me of a little patch posted by Kurt Garloff
some time ago on l-k which fixed a race in namei.c. but has not
yet been approved of AFAIK.
===Oops 1===
WARNING: This version of ksymoops is obsolete.
WARNING: The current version can be obtained from ftp://ftp.ocs.com.au/pub/ksymoops
Options used: -V (default)
-o /lib/modules/2.2.14-x6/ (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-m /boot/System.map-2.2.14-x6 (specified)
-c 1 (default)
No modules in ksyms, skipping objects
Aug 3 11:20:49 tornio kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000008
Aug 3 11:20:49 tornio kernel: current->tss.cr3 = 0344c000, %cr3 = 0344c000
Aug 3 11:20:49 tornio kernel: *pde = 00000000
Aug 3 11:20:49 tornio kernel: Oops: 0000
Aug 3 11:20:49 tornio kernel: CPU: 0
Aug 3 11:20:49 tornio kernel: EIP: 0010:[kmem_cache_free+64/372]
Aug 3 11:20:49 tornio kernel: EFLAGS: 00010082
Aug 3 11:20:49 tornio kernel: eax: 0000007c ebx: c3a2dba0 ecx: 00000000 edx: c3a2dc1c
Aug 3 11:20:49 tornio kernel: esi: c3eff620 edi: 00000286 ebp: c32cf210 esp: c341ff2c
Aug 3 11:20:49 tornio kernel: ds: 0018 es: 0018 ss: 0018
Aug 3 11:20:49 tornio kernel: Process automount (pid: 25646, process nr: 37, stackpage=c341f000)
Aug 3 11:20:49 tornio kernel: Stack: c36e1800 c32cf210 c3a2dc1c c3a2dc20 c012f22b c3eff620 c3a2dba0 c3a2dba0
Aug 3 11:20:49 tornio kernel: c3a2dc20 c012f53c c3a2dba0 00000000 c16fb9e0 c16fb9e0 c017b848 c36e1800
Aug 3 11:20:49 tornio kernel: c16fba04 00000001 c16fb9e0 00000000 c017b6ea c16fb9e0 c29d2540 ffffffe7
Aug 3 11:20:49 tornio kernel: Call Trace: [dput+223/328] [shrink_dcache_sb+284/296] [autofs_catatonic_mode+116/124] [autofs_root_ioctl+258/412] [sys_ioctl+421/448] [system_call+52/56]
Aug 3 11:20:49 tornio kernel: Code: 8b 69 08 81 fd 2b 2f c3 a5 0f 85 d9 00 00 00 8b 69 0c 85 ed
Code: 00000000 Before first symbol 00000000 <_IP>: <===
Code: 00000000 Before first symbol 0: 8b 69 08 movl 0x8(%ecx),%ebp <===
Code: 00000003 Before first symbol 3: 81 fd 2b 2f c3 a5 cmpl $0xa5c32f2b,%ebp
Code: 00000009 Before first symbol 9: 0f 85 d9 00 00 00 jne 000000e8 Before first symbol
Code: 0000000f Before first symbol f: 8b 69 0c movl 0xc(%ecx),%ebp
Code: 00000012 Before first symbol 12: 85 ed testl %ebp,%ebp
===Oops 2===
WARNING: This version of ksymoops is obsolete.
WARNING: The current version can be obtained from ftp://ftp.ocs.com.au/pub/ksymoops
Options used: -V (default)
-o /lib/modules/2.2.14-x6/ (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-m /boot/System.map-2.2.14-x6 (specified)
-c 1 (default)
No modules in ksyms, skipping objects
Aug 3 11:22:13 tornio kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000000
Aug 3 11:22:13 tornio kernel: current->tss.cr3 = 0273b000, %cr3 = 0273b000
Aug 3 11:22:13 tornio kernel: *pde = 00000000
Aug 3 11:22:13 tornio kernel: Oops: 0002
Aug 3 11:22:13 tornio kernel: CPU: 0
Aug 3 11:22:13 tornio kernel: EIP: 0010:[kmem_cache_free+333/372]
Aug 3 11:22:13 tornio kernel: EFLAGS: 00010286
Aug 3 11:22:13 tornio kernel: eax: 0000003e ebx: c0e11300 ecx: 00000024 edx: 00000017
Aug 3 11:22:13 tornio kernel: esi: c3eff620 edi: 00000286 ebp: 00000000 esp: c18dbf2c
Aug 3 11:22:13 tornio kernel: ds: 0018 es: 0018 ss: 0018
Aug 3 11:22:13 tornio kernel: Process umount (pid: 4411, process nr: 60, stackpage=c18db000)
Aug 3 11:22:13 tornio kernel: Stack: c36e1800 0000000c c0e1137c c0e11380 c012f22b c3eff620 c0e11300 c0e11300
Aug 3 11:22:13 tornio kernel: c0e11380 c012f53c c0e11300 c36e1800 fffffffe 0000000c c0127932 c36e1800
Aug 3 11:22:13 tornio kernel: 0000000c fffffffa c2c4f870 0000000c c0127a57 0000000c 00000000 00000000
Aug 3 11:22:13 tornio kernel: Call Trace: [dput+223/328] [shrink_dcache_sb+284/296] [do_umount+78/284] [umount_dev+87/160] [sys_umount+179/192] [sys_oldumount+12/16] [system_call+52/56]
Aug 3 11:22:13 tornio kernel: Code: c7 05 00 00 00 00 00 00 00 00 eb 12 8d 76 00 56 53 68 de c2
Code: 00000000 Before first symbol 00000000 <_IP>: <===
Code: 00000000 Before first symbol 0: c7 05 00 00 00 00 00 movl $0x0,0x0 <===
Code: 00000007 Before first symbol 7: 00 00 00
Code: 0000000a Before first symbol a: eb 12 jmp 0000001e Before first symbol
Code: 0000000c Before first symbol c: 8d 76 00 leal 0x0(%esi),%esi
Code: 0000000f Before first symbol f: 56 pushl %esi
Code: 00000010 Before first symbol 10: 53 pushl %ebx
Code: 00000011 Before first symbol 11: 68 de c2 00 00 pushl $0xc2de
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This archive was generated by hypermail 2b29 : Mon Aug 07 2000 - 21:00:10 EST