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    SubjectRe: kernel BUG at drivers/serial/core.c:1067 with 2.5.44
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    Date
    Russell King <rmk@arm.linux.org.uk> writes:

    > Firstly, you need klogd running with -x so the numbers within [< and >]
    > are preserved. It is a shame that these distributions still run klogd
    > without -x.
    >
    > BTW, an even better option would be to enable CONFIG_KALLSYMS.

    i've recompiled the kernel with CONFIG_KALLSYMS and started klogd with
    -x and this is what i get now:

    ksymoops 2.4.6 on i686 2.5.44. Options used
    -V (default)
    -k /proc/ksyms (default)
    -l /proc/modules (default)
    -o /lib/modules/2.5.44/ (default)
    -m /boot/System.map-2.5.44 (default)

    Warning: You did not tell me where to find symbol information. I will
    assume that the log matches the kernel and modules that are running
    right now and I'll use the default options above for symbol resolution.
    If the current kernel and/or modules do not match the log, you can get
    more accurate output by telling me the kernel version and where to find
    map, modules, ksyms etc. ksymoops -h explains the options.

    Oct 27 10:36:45 trinculo kernel: kernel BUG at drivers/serial/core.c:1067!
    Oct 27 10:36:45 trinculo kernel: invalid operand: 0000
    Oct 27 10:36:45 trinculo kernel: 3c574_cs irtty irda autofs4 microcode ppp_async uhci-hcd ohci-hcd usbcore nls_cp437 vfat snd-pcm-oss snd-mixer-oss snd-ymfpci snd-pcm snd-mpu401-uart snd-rawmidi snd-ac97-codec snd-opl3-lib snd-timer snd-hwdep snd-seq-device snd soundcore
    Oct 27 10:36:45 trinculo kernel: CPU: 0
    Oct 27 10:36:45 trinculo kernel: EIP: 0060:[<c01a7d71>] Not tainted
    Using defaults from ksymoops -t elf32-i386 -a i386
    Oct 27 10:36:45 trinculo kernel: EFLAGS: 00010286
    Oct 27 10:36:45 trinculo kernel: eax: cfd21900 ebx: cabe8000 ecx: 000008bd edx: c13b1d1c
    Oct 27 10:36:45 trinculo kernel: esi: c13b1d40 edi: 000008bd ebp: cb6cec2c esp: cabe9e58
    Oct 27 10:36:45 trinculo kernel: ds: 0068 es: 0068 ss: 0068
    Oct 27 10:36:45 trinculo kernel: Stack: cbd98e00 c13b1d40 cabe9ea8 00000000 cabe8000 d11cf5f8 cb1a3000 cabe9e84
    Oct 27 10:36:45 trinculo kernel: cb1a3000 cbd98e00 caba3000 00000005 00000000 000008bd 00000000 7f1c030b
    Oct 27 10:36:45 trinculo kernel: 01000415 1a131100 170f1200 2f000016 d11d0321 cbd98e00 00000000 caba3000
    Oct 27 10:36:45 trinculo kernel: Call Trace:
    Oct 27 10:36:45 trinculo kernel: [<d11cf5f8>] irtty_stop_receiver+0x64/0x70 [irtty]
    Oct 27 10:36:45 trinculo kernel: [<d11d0321>] irtty_net_open+0x79/0xcc [irtty]
    Oct 27 10:36:45 trinculo kernel: [<c019e64b>] vsnprintf+0x3db/0x41c
    Oct 27 10:36:45 trinculo kernel: [<c0214f7c>] dev_open+0x4c/0xa4
    Oct 27 10:36:45 trinculo kernel: [<c02161e5>] dev_change_flags+0x51/0x104
    Oct 27 10:36:45 trinculo kernel: [<c021630d>] dev_ifsioc+0x75/0x364
    Oct 27 10:36:45 trinculo kernel: [<c021690b>] dev_ioctl+0x30f/0x428
    Oct 27 10:36:45 trinculo kernel: [<d11baf49>] irda_ioctl+0x1cd/0x1d4 [irda]
    Oct 27 10:36:45 trinculo kernel: [<c020eeff>] sock_ioctl+0xcb/0xf0
    Oct 27 10:36:45 trinculo kernel: [<c014d879>] sys_ioctl+0x27d/0x2d4
    Oct 27 10:36:45 trinculo kernel: [<c0106fbb>] syscall_call+0x7/0xb
    Oct 27 10:36:45 trinculo kernel: Code: 0f 0b 2b 04 7e 5c 27 c0 8d b4 26 00 00 00 00 8b 4c 24 1c 3b


    >>EIP; c01a7d71 <uart_set_termios+29/164> <=====

    >>eax; cfd21900 <_end+f92f74c/10d12eac>
    >>ebx; cabe8000 <_end+a7f5e4c/10d12eac>
    >>edx; c13b1d1c <_end+fbfb68/10d12eac>
    >>esi; c13b1d40 <_end+fbfb8c/10d12eac>
    >>ebp; cb6cec2c <_end+b2dca78/10d12eac>
    >>esp; cabe9e58 <_end+a7f7ca4/10d12eac>

    Trace; d11cf5f8 <[irtty]irtty_stop_receiver+64/70>
    Trace; d11d0321 <[irtty]irtty_net_open+79/cc>
    Trace; c019e64b <vsnprintf+3db/41c>
    Trace; c0214f7c <dev_open+4c/a4>
    Trace; c02161e5 <dev_change_flags+51/104>
    Trace; c021630d <dev_ifsioc+75/364>
    Trace; c021690b <dev_ioctl+30f/428>
    Trace; d11baf49 <[irda]irda_ioctl+1cd/1d4>
    Trace; c020eeff <sock_ioctl+cb/f0>
    Trace; c014d879 <sys_ioctl+27d/2d4>
    Trace; c0106fbb <syscall_call+7/b>

    Code; c01a7d71 <uart_set_termios+29/164>
    00000000 <_EIP>:
    Code; c01a7d71 <uart_set_termios+29/164> <=====
    0: 0f 0b ud2a <=====
    Code; c01a7d73 <uart_set_termios+2b/164>
    2: 2b 04 7e sub (%esi,%edi,2),%eax
    Code; c01a7d76 <uart_set_termios+2e/164>
    5: 5c pop %esp
    Code; c01a7d77 <uart_set_termios+2f/164>
    6: 27 daa
    Code; c01a7d78 <uart_set_termios+30/164>
    7: c0 8d b4 26 00 00 00 rorb $0x0,0x26b4(%ebp)
    Code; c01a7d7f <uart_set_termios+37/164>
    e: 00 8b 4c 24 1c 3b add %cl,0x3b1c244c(%ebx)


    1 warning issued. Results may not be reliable.

    i hope this helps.

    --alex--

    --
    | I believe the moment is at hand when, by a paranoiac and active |
    | advance of the mind, it will be possible (simultaneously with |
    | automatism and other passive states) to systematize confusion |
    | and thus to help to discredit completely the world of reality. |
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