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    SubjectRe: XFree + "stonerview" screensaver -> Xfree oops
    On Fri, 5 Jul 2002 17:08:23 +0200
    Diego Calleja <diegocg@teleline.es> escribió:


    The oops is very unreadable, this version better ;)
    Jul 5 16:33:36 localhost kernel: Unable to handle kernel NULL pointer
    dereference at virtual address 0000001c Jul 5 16:33:36 localhost
    kernel: c01b41aa Jul 5 16:33:36 localhost kernel: *pde = 00a63067 Jul
    5 16:33:36 localhost kernel: Oops: 0000 Jul 5 16:33:36 localhost
    kernel: CPU: 0 Jul 5 16:33:36 localhost kernel: EIP:
    0010:[sock_poll+30/40] Not tainted Jul 5 16:33:36 localhost kernel:
    EFLAGS: 00210282 Jul 5 16:33:36 localhost kernel: eax: 00000000 ebx:
    c0b4db20 ecx: 00000000 edx: c1bd35b4 Jul 5 16:33:36 localhost
    kernel: esi: c0b4db20 edi: 00000000 ebp: c1845f70 esp: c1845f28
    Jul 5 16:33:36 localhost kernel: ds: 0018 es: 0018 ss: 0018 Jul 5
    16:33:36 localhost kernel: Process XFree86 (pid: 310,
    stackpage=c1845000) Jul 5 16:33:36 localhost kernel: Stack: c0b4db20
    c1bd35b4 00000000 00000000 c013e1d6 c0b4db20 00000000 00000100 Jul 5
    16:33:36 localhost kernel: 00000020 c11fff20 00000145 00080000
    c1844000 7fffffff 00000013 00000000 Jul 5 16:33:36 localhost kernel:
    00000000 c149d000 00000000 c013e62c 00000017 c1845fa8 c1845fa4
    c1844000 Jul 5 16:33:36 localhost kernel: Call Trace:
    [do_select+226/476] [sys_select+820/1156] [system_call+51/64] Jul 5
    16:33:36 localhost kernel: Code: 8b 40 1c ff d0 83 c4 0c 5b c3 53 8b 5c
    24 08 8b 43 08 8b 54

    The rest seems good.

    >Using defaults from ksymoops -t elf32-i386 -a i386
    >
    >
    > >>ebx; c0b4db20 <[apm].bss.end+137801/2cdce1>
    > >>edx; c1bd35b4 <[sb].bss.end+9ab8d5/bf0321>
    > >>esi; c0b4db20 <[apm].bss.end+137801/2cdce1>
    > >>ebp; c1845f70 <[sb].bss.end+61e291/bf0321>
    > >>esp; c1845f28 <[sb].bss.end+61e249/bf0321>
    >
    > Code; 00000000 Before first symbol
    > 00000000 <_EIP>:
    > Code; 00000000 Before first symbol
    > 0: 8b 40 1c mov 0x1c(%eax),%eax
    > Code; 00000003 Before first symbol
    > 3: ff d0 call *%eax
    > Code; 00000005 Before first symbol
    > 5: 83 c4 0c add $0xc,%esp
    > Code; 00000008 Before first symbol
    > 8: 5b pop %ebx
    > Code; 00000009 Before first symbol
    > 9: c3 ret
    > Code; 0000000a Before first symbol
    > a: 53 push %ebx
    > Code; 0000000b Before first symbol
    > b: 8b 5c 24 08 mov 0x8(%esp,1),%ebx
    > Code; 0000000f Before first symbol
    > f: 8b 43 08 mov 0x8(%ebx),%eax
    > Code; 00000012 Before first symbol
    > 12: 8b 54 00 00 mov 0x0(%eax,%eax,1),%edx
    >
    >
    > 1 warning issued. Results may not be reliable.
    >
    > ---------------------------------------------------------------------
    > ------------
    >
    > -When i watch the stopped screen, the image _always_ is the same, the
    > screensaver always stops at the same point Any advices of how to
    > debug/strace/whatever this?
    >
    > (after Xfree is hanged, ctrl+alt+Fn does'nt works, so i do sysrq sync
    > + reboot, but this is normal...)
    >
    >
    > Regards, Diego Calleja
    >
    >
    -
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