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SubjectOops in 2.5.63

2.5.63 oopses upon fopen-ing for instance /dev/fb0 if no framebuffer
driver is loaded.

The SiS X driver does this in order to find out if the SiS framebuffer
driver is loaded. In 2.4, the fopen failed "correcrly".

Mar 5 12:47:08 oland modprobe: FATAL: Module fb0 not found.
Mar 5 12:47:08 oland modprobe: FATAL: Module fb32 not found.
Mar 5 12:47:08 oland modprobe: FATAL: Module fb64 not found.
Mar 5 12:47:08 oland kernel: Unable to handle kernel NULL pointer
dereference at virtual address 00000000
Mar 5 12:47:08 oland kernel: printing eip:
Mar 5 12:47:08 oland kernel: c024ce74
Mar 5 12:47:08 oland kernel: *pde = 00000000
Mar 5 12:47:08 oland kernel: Oops: 0000
Mar 5 12:47:08 oland kernel: CPU: 0
Mar 5 12:47:08 oland kernel: EIP: 0060:[fb_open+60/180] Not tainted
Mar 5 12:47:08 oland kernel: EIP: 0060:[<c024ce74>] Not tainted
Mar 5 12:47:08 oland kernel: EFLAGS: 00013286
Mar 5 12:47:08 oland kernel: EIP is at fb_open+0x3c/0xb4
Mar 5 12:47:08 oland kernel: eax: 00000000 ebx: c1586000 ecx:
c03557c0 edx: 00000001
Mar 5 12:47:08 oland kernel: esi: c03be100 edi: 00000000 ebp:
d9405f28 esp: d9405f1c
Mar 5 12:47:08 oland kernel: ds: 007b es: 007b ss: 0068
Mar 5 12:47:08 oland kernel: Process X (pid: 995, threadinfo=d9404000
task=d8927920)
Mar 5 12:47:08 oland kernel: Stack: 00000000 d9953120 dabae6c0 d9405f44
c014792f dabae6c0 d9953120 d9953120
Mar 5 12:47:08 oland kernel: dabae6c0 00000000 d9405f60 c01402ec
dabae6c0 d9953120 bffff818 d8b94000
Mar 5 12:47:08 oland kernel: 00000002 d9405f9c c0140203 dabb0840
dbfea560 00000002 00000006 0826d160
Mar 5 12:47:08 oland kernel: Call Trace:
Mar 5 12:47:08 oland kernel: [chrdev_open+63/80] chrdev_open+0x3f/0x50
Mar 5 12:47:08 oland kernel: [<c014792f>] chrdev_open+0x3f/0x50
Mar 5 12:47:08 oland kernel: [dentry_open+220/416] dentry_open+0xdc/0x1a0
Mar 5 12:47:08 oland kernel: [<c01402ec>] dentry_open+0xdc/0x1a0
Mar 5 12:47:08 oland kernel: [filp_open+79/92] filp_open+0x4f/0x5c
Mar 5 12:47:08 oland kernel: [<c0140203>] filp_open+0x4f/0x5c
Mar 5 12:47:08 oland kernel: [sys_open+55/116] sys_open+0x37/0x74
Mar 5 12:47:08 oland kernel: [<c014059f>] sys_open+0x37/0x74
Mar 5 12:47:08 oland kernel: [syscall_call+7/11] syscall_call+0x7/0xb
Mar 5 12:47:08 oland kernel: [<c0108ac7>] syscall_call+0x7/0xb
Mar 5 12:47:08 oland kernel:
Mar 5 12:47:08 oland kernel: Code: 8b 00 85 c0 74 16 83 38 02 74 08 ff
80 c0 00 00 00 eb 09 31

--
Thomas Winischhofer
Vienna/Austria
mailto:thomas@winischhofer.net http://www.winischhofer.net/

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