Re: proc_fd_link

From: Andrea Arcangeli (andrea@suse.de)
Date: Wed May 03 2000 - 13:22:45 EST


Got an oops on an IA32 machine now (2.3.99-pre7-pre3 + classzone).

May 3 20:19:00 laser kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000004
May 3 20:19:00 laser kernel: printing eip:
May 3 20:19:00 laser kernel: c0156e49
May 3 20:19:01 laser kernel: *pde = 00000000
May 3 20:19:01 laser kernel: Oops: 0000
May 3 20:19:01 laser kernel: CPU: 0
May 3 20:19:01 laser kernel: EIP: 0010:[__d_path+161/252]
May 3 20:19:01 laser kernel: EFLAGS: 00010287
May 3 20:19:01 laser kernel: eax: c6d84fff ebx: 00000fff ecx: c6d84ffe edx: c71b41a0
May 3 20:19:01 laser kernel: esi: c6d84fff edi: 00000000 ebp: c71aa4e0 esp: c6d9defc
May 3 20:19:01 laser kernel: ds: 0018 es: 0018 ss: 0018
May 3 20:19:01 laser kernel: Process fuser (pid: 244, stackpage=c6d9d000)
May 3 20:19:01 laser kernel: Stack: 00000001 c7f4b4a0 00000002 c71aa4e0 c6d84fff c01676fc c71b41a0 00000000
May 3 20:19:01 laser kernel: c7ff40e0 c7f64900 c6d84000 00001000 c71b0000 c71b04fc c71b04dc c6df84e0
May 3 20:19:01 laser kernel: c7f4b4dc c7f4b4bc 06d84000 c6d9c000 00000001 00000000 0000007b 00000000
May 3 20:19:01 laser kernel: Call Trace: [proc_pid_read_maps+548/1132] [pid_maps_read+189/264] [sys_read+276/316] [system_call+52/56]
May 3 20:19:01 laser kernel: Code: 3b 57 04 74 07 8b 6a 0c 39 ea 75 13 8b 74 24 1c 8b 46 08 39

BTW, "fuser -s /" lockup the machine too due /proc.

Andrea

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