2.1.48 oops - probably dentry related

Walker Aumann (walkera@gg.caltech.edu)
Wed, 13 Aug 1997 17:54:25 -0700


While running "make modules" for 2.1.49. /usr/src/linux lives on an ext2
file system.

Aug 13 17:39:32 stew kernel: Unable to handle kernel NULL pointer dereference at virtual address 0000004f
Aug 13 17:39:32 stew kernel: current->tss.cr3 = 0120d000, 8r3 = 0120d000
Aug 13 17:39:32 stew kernel: *pde = 00000000
Aug 13 17:39:32 stew kernel: Oops: 0000
Aug 13 17:39:32 stew kernel: CPU: 0
Aug 13 17:39:32 stew kernel: EIP: 0010:[<c012f356>]
Aug 13 17:39:32 stew kernel: EFLAGS: 00010286
Aug 13 17:39:32 stew kernel: eax: c1f06ac0 ebx: c28d9000 ecx: 00000000 edx: ffffffff
Aug 13 17:39:32 stew kernel: esi: c1f06ac0 edi: c1120540 ebp: c1120540 esp: c1937f54
Aug 13 17:39:32 stew kernel: ds: 0018 es: 0018 ss: 0018
Aug 13 17:39:32 stew kernel: Process make (pid: 30838, process nr: 26, stackpage=c1937000)
Aug 13 17:39:32 stew kernel: Stack: c28d9000 c1f06ac0 c28d9003 c012f4e3 c1120540 c1f06ac0 c28d9000 00000001
Aug 13 17:39:32 stew kernel: 00000001 bfffe0a4 00005601 c28d9000 00000003 00005663 c012f540 c28d9000
Aug 13 17:39:32 stew kernel: 00000000 00000001 00000000 08069e80 c012d14b 08069e80 00000001 c1936000
Aug 13 17:39:32 stew kernel: Call Trace: [<c012f4e3>] [<c012f540>] [<c012d14b>] [<c01098d6>]
Aug 13 17:39:32 stew kernel: Code: 8b 42 50 85 c0 74 5d 83 78 2c 00 74 57 89 e0 89 c3 81 e3 00

ksymoops

>>EIP: c012f356 <do_follow_link+e/88>
Trace: c012f4e3 <lookup_dentry+113/14c>
Trace: c012f540 <__namei+24/80>
Trace: c012d14b <sys_newstat+83/f4>
Trace: c01098d6 <system_call+3a/40>

Code: c012f356 <do_follow_link+e/88>
Code: c012f356 <do_follow_link+e/88> 8b 42 50 movl 0x50(%edx),%eax
Code: c012f359 <do_follow_link+11/88> 85 c0 testl %eax,%eax
Code: c012f35b <do_follow_link+13/88> 74 5d je c012f3ba <do_follow_link+72/88>
Code: c012f35d <do_follow_link+15/88> 83 78 2c 00 cmpl $0x0,0x2c(%eax)
Code: c012f367 <do_follow_link+1f/88> 74 57 je c012f3ba <do_follow_link+72/88>
Code: c012f369 <do_follow_link+21/88> 89 e0 movl %esp,%eax
Code: c012f36b <do_follow_link+23/88> 89 c3 movl %eax,%ebx
Code: c012f36d <do_follow_link+25/88> 81 e3 00 00 90 andl $0x90900000,%ebx
Code: c012f378 <do_follow_link+30/88> 90
Code: c012f379 <do_follow_link+31/88> 90 nop