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SubjectOops in 2.4.4
Hi,

I got two sequent oopses in 2.4.4. Both were triggered by `ps xa'.
First (oops1) resulted in such line in ps output:
5149 tty3 Z 0:00 [mcextHLroIj <defunct>]
Second (oops2), run just after the first, crashed bash.

System is pII 400, 128MB RAM. I was unable to reproduce it.

regards
pkot
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[ Paweł Kot ] [ Linux Registered User #94478 ] [ LinuxNews.pl Team Member ]
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Jul 8 23:26:43 blurp kernel: Unable to handle kernel NULL pointer dereference at virtual address 000007b4
Jul 8 23:26:43 blurp kernel: printing eip:
Jul 8 23:26:43 blurp kernel: c0111f01
Jul 8 23:26:43 blurp kernel: *pde = 00000000
Jul 8 23:26:43 blurp kernel: Oops: 0002
Jul 8 23:26:43 blurp kernel: CPU: 0
Jul 8 23:26:43 blurp kernel: EIP: 0010:[copy_files+377/592]
Jul 8 23:26:43 blurp kernel: EFLAGS: 00010206
Jul 8 23:26:43 blurp kernel: eax: 000007a0 ebx: c4c910c0 ecx: c7aaf000 edx: 00000001
Jul 8 23:26:43 blurp kernel: esi: c73b25a0 edi: c4c91100 ebp: c3cc87fc esp: c5411f34
Jul 8 23:26:43 blurp kernel: ds: 0018 es: 0018 ss: 0018
Jul 8 23:26:43 blurp kernel: Process bash (pid: 4309, stackpage=c5411000)
Jul 8 23:26:43 blurp kernel: Stack: 00000011 c5410590 00000011 c5411fbc 00000008 00000100 c7aaf000 c73b2560
Jul 8 23:26:43 blurp kernel: c01122bc 00000011 c2a8a000 c5410000 bffffbcc 00000000 c5411fbc c2a8a000
Jul 8 23:26:43 blurp kernel: c5411f94 00000000 fffffff4 00000000 00000000 00000000 c5411fa0 c5411fa0
Jul 8 23:26:43 blurp kernel: Call Trace: [do_fork+740/1816] [sys_fork+20/28] [system_call+51/56]
Jul 8 23:26:43 blurp kernel:
Jul 8 23:26:43 blurp kernel: Code: ff 40 14 89 45 00 83 c5 04 4a 75 e3 8b 43 08 2b 44 24 14 8d
Jul 8 23:26:43 blurp kernel: Unable to handle kernel NULL pointer dereference at virtual address 000007b4
Jul 8 23:26:43 blurp kernel: printing eip:
Jul 8 23:26:43 blurp kernel: c012d6c6
Jul 8 23:26:43 blurp kernel: *pde = 00000000
Jul 8 23:26:43 blurp kernel: Oops: 0000
Jul 8 23:26:43 blurp kernel: CPU: 0
Jul 8 23:26:43 blurp kernel: EIP: 0010:[filp_close+6/100]
Jul 8 23:26:43 blurp kernel: EFLAGS: 00010206
Jul 8 23:26:43 blurp kernel: eax: c7aaec00 ebx: 000007a0 ecx: 00000000 edx: 000007a0
Jul 8 23:26:43 blurp kernel: esi: 000000ff edi: c73b2560 ebp: 00000008 esp: c5411e04
Jul 8 23:26:43 blurp kernel: ds: 0018 es: 0018 ss: 0018
Jul 8 23:26:43 blurp kernel: Process bash (pid: 4309, stackpage=c5411000)
Jul 8 23:26:43 blurp kernel: Stack: 00000001 000000ff c0114eb8 000007a0 c73b2560 c13e4ba0 c5410000 0000000b
Jul 8 23:26:43 blurp kernel: 000007b4 c73b2680 c01154af c73b2560 00000000 c5411f00 c010ff34 c0106f6e
Jul 8 23:26:43 blurp kernel: 0000000b c0110267 c01e919e c5411f00 00000002 c5410000 00000002 c010ff34
Jul 8 23:26:43 blurp kernel: Call Trace: [put_files_struct+84/188] [do_exit+195/556] [do_page_fault+0/1068] [die+66/68] [do_page_fault+819/1068] [do_page_fault+0/1068] [lf+52/96]
Jul 8 23:26:43 blurp kernel: [do_con_trol+374/3252] [do_con_write+1417/1600] [change_termios+372/384] [handle_mm_fault+145/196] [error_code+52/60] [copy_files+377/592] [do_fork+740/1816] [sys_fork+20/28]
Jul 8 23:26:43 blurp kernel: [system_call+51/56]
Jul 8 23:26:43 blurp kernel:
Jul 8 23:26:43 blurp kernel: Code: 8b 43 14 85 c0 75 13 68 82 e4 1e c0 e8 a5 56 fe ff 31 c0 83
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