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看看下面这个内核异常,先是进程异常,然后内核异常,内核挂起
是不是用户态进程访问内存异常,触发do_page_fault到内核,内核又访问内存异常,再次触发do_page_fault
omiga[1419]: segfault at 0 ip (null) sp b758cb2c error 4 in ld-2.5.so[6ec000+1a000]
BUG: unable to handle kernel NULL pointer dereference at 00000024
IP: [<c0122c63>] do_exit+0x19c/0x503
*pde = 00000000
Thread overran stack, or stack corrupted
Oops: 0000 [#1]
last sysfs file:
Modules linked in: nfe_l7_filter ace_kernel
Pid: 1419, comm: config Not tainted 2.6.36.1+ #6 i855-W83627HF/
EIP: 0060:[<c0122c63>] EFLAGS: 00210246 CPU: 0
EIP is at do_exit+0x19c/0x503
EAX: 00000000 EBX: de9ee240 ECX: b7592bd8 EDX: de9ee240
ESI: 0000008b EDI: c050e829 EBP: 0000000a ESP: dcbade6c
DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
Process config (pid: 1419, ti=dcbac000 task=de9ee240 task.ti=dcbac000)
Stack:
0000000b dcbadfb4 00000001 ffffffff 0000008d 5059a9c3 0000008b de9ee240
<0> c050e829 0000000a c0123185 dcbadf00 c012bdbc dcfd710c de9ee240 de84b340
<0> dcbadfb4 de9ee240 dcfd7040 dcbadf80 de9ee240 dcfd710c de9ee4a8 de9ee3fc
Call Trace:
[<c050e829>] ? do_page_fault+0x0/0x354
[<c0123185>] ? do_group_exit+0x3e/0x5f
[<c012bdbc>] ? get_signal_to_deliver+0x2f7/0x307
[<c050e829>] ? do_page_fault+0x0/0x354
[<c0101b71>] ? do_signal+0x56/0x63c
[<c016badc>] ? print_vma_addr+0xaa/0xd2
[<c011618e>] ? bad_area+0x34/0x39
[<c050ea22>] ? do_page_fault+0x1f9/0x354
[<c0402acf>] ? sys_socketcall+0xf2/0x1a8
[<c050e829>] ? do_page_fault+0x0/0x354
[<c01023a5>] ? do_notify_resume+0x20/0x40
[<c050e829>] ? do_page_fault+0x0/0x354
[<c050c82e>] ? work_notifysig+0x13/0x19
[<c050e829>] ? do_page_fault+0x0/0x354
Code: 00 89 d8 e8 6b fe ff ff 89 d8 e8 b7 e6 06 00 e8 4c 31 fe ff 83 7c 24 08 00 74 0a b8 01 00 00 00 e8 16 ca 15 00 8b 43 04 8b 40 04 <8b> 40 24 e8 34 c5 01 00 89 d8 e8 a9 22 fe ff 89 d8 e8 57 5c 03
EIP: [<c0122c63>] do_exit+0x19c/0x503 SS:ESP 0068:dcbade6c
CR2: 0000000000000024
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