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    SubjectVarious issues with 2.5.2-dj6
    Just got 2.5.2-dj6 building today and have the following to report:

    system stability is very nice. Rock solid and responsive despite it
    being experimental.

    I have the kernel patched in the following order:
    2.5.2
    2.5.2-dj6
    preempt-kernel
    acpi (against 2.4.17 - all mispatches fixed except for some trivia in
    Configure.help)
    acpi-pci-irq-routing (obtained from LKML)

    The following options are passed to the kernel:
    pci=acpiirq root=/dev/hda7 ro

    I can send my config to anybody who needs it.

    Issue 1: kernel does not compile without SMP support (missing references
    to global_irq_holder in sched.c)
    Issue 2: Two IEEE1934 modules needed to have "#include
    <linux/interrupt.h>" added (host.c and another one I forget)
    Issue 3: Turning off hotplug (/etc/init.d/hotplug stop on a Debian
    unstable box - updated today) gives the following oopses (captured by
    "klogd -x") - see below.
    Issue 4: Unmounting the drives read-only with Alt-SysRQ-U gives the
    following oops and locks the box except for further Alt-SysRQ-* (mount
    -o ro,remout /mount/point works fine) - see below.
    Issue 5: Mouse (via /dev/input/mice) seems slugish this time (after a
    fresh cold boot). Seemed fine first few times on 2.5.2-dj6 and fine
    under 2.4.18-pre7 /dev/psaux.


    Hope this helps the 2.5 effort and isn't just something stupid (or a
    whole lot of stupid somethings) on my part.

    --Nathan


    --------------------------- batch of sequential OOPSes on hotplug unregister

    Jan 30 18:22:12 (none) kernel: usb.c: USB disconnect on device 1
    Jan 30 18:22:12 (none) kernel: usb.c: USB bus 1 deregistered
    Jan 30 18:22:12 (none) kernel: usb.c: USB disconnect on device 1
    Jan 30 18:22:12 (none) kernel: usb.c: USB disconnect on device 2
    Jan 30 18:22:12 (none) kernel: Unable to handle kernel NULL pointer
    dereference at virtual address 00000032
    Jan 30 18:22:12 (none) kernel: printing eip:
    Jan 30 18:22:12 (none) kernel: c0153caa
    Jan 30 18:22:12 (none) kernel: *pde = 00000000
    Jan 30 18:22:12 (none) kernel: Oops: 0000
    Jan 30 18:22:12 (none) kernel: CPU: 0
    Jan 30 18:22:12 (none) kernel: EIP: 0010:[<c0153caa>] Not tainted
    Jan 30 18:22:12 (none) kernel: EFLAGS: 00010202
    Jan 30 18:22:12 (none) kernel: eax: cf091220 ebx: cf1de000 ecx:
    00000000 edx: cf15eb40
    Jan 30 18:22:12 (none) kernel: esi: 00000000 edi: 00000000 ebp:
    cf1be960 esp: cf1dff6c
    Jan 30 18:22:12 (none) kernel: ds: 0018 es: 0018 ss: 0018
    Jan 30 18:22:12 (none) kernel: Process usb.agent (pid: 161,
    stackpage=cf1df000)
    Jan 30 18:22:12 (none) kernel: Stack: cf1de000 cf1be960 00000000
    cf1be960 00000001 c013c01a 00000000 cf1be960
    Jan 30 18:22:12 (none) kernel: 00000000 cf1de000 cf15ea20
    00000001 c014ad4e cf1be960 cf15ea20 cf1de000
    Jan 30 18:22:12 (none) kernel: 00000003 080e4ec8 bffff650
    cf1be8e0 fffffff0 c0108a1b 00000003 00000001
    Jan 30 18:22:12 (none) kernel: Call Trace: [<c013c01a>] [<c014ad4e>]
    [<c0108a1b>]
    Jan 30 18:22:12 (none) kernel:
    Jan 30 18:22:12 (none) kernel: Code: 0f b7 46 32 25 00 f0 ff ff 66 3d 00
    40 74 0a b8 ec ff ff ff

    >>EIP; c0153caa <fcntl_dirnotify+3e/190> <=====
    Trace; c013c01a <filp_close+9e/bc>
    Trace; c014ad4e <sys_dup2+f6/160>
    Trace; c0108a1a <system_call+32/38>
    Code; c0153caa <fcntl_dirnotify+3e/190>
    00000000 <_EIP>:
    Code; c0153caa <fcntl_dirnotify+3e/190> <=====
    0: 0f b7 46 32 movzwl 0x32(%esi),%eax <=====
    Code; c0153cae <fcntl_dirnotify+42/190>
    4: 25 00 f0 ff ff and $0xfffff000,%eax
    Code; c0153cb2 <fcntl_dirnotify+46/190>
    9: 66 3d 00 40 cmp $0x4000,%ax
    Code; c0153cb6 <fcntl_dirnotify+4a/190>
    d: 74 0a je 19 <_EIP+0x19> c0153cc2
    <fcntl_dirnotify+56/190>
    Code; c0153cb8 <fcntl_dirnotify+4c/190>
    f: b8 ec ff ff ff mov $0xffffffec,%eax

    Jan 30 18:22:12 (none) kernel: <6>usb.c: USB bus 2 deregistered
    Jan 30 18:22:12 (none) kernel: Unable to handle kernel NULL pointer
    dereference at virtual address 00000000
    Jan 30 18:22:12 (none) kernel: printing eip:
    Jan 30 18:22:12 (none) kernel: 00000000
    Jan 30 18:22:12 (none) kernel: *pde = 00000000
    Jan 30 18:22:12 (none) kernel: Oops: 0000
    Jan 30 18:22:12 (none) kernel: CPU: 0
    Jan 30 18:22:12 (none) kernel: EIP: 0010:[<00000000>] Not tainted
    Jan 30 18:22:12 (none) kernel: EFLAGS: 00010206
    Jan 30 18:22:12 (none) kernel: eax: 00000000 ebx: c13c85c0 ecx:
    cf1be4e0 edx: 00000000
    Jan 30 18:22:12 (none) kernel: esi: cf217000 edi: 00000000 ebp:
    cfe28ab4 esp: cf1adf30
    Jan 30 18:22:12 (none) kernel: ds: 0018 es: 0018 ss: 0018
    Jan 30 18:22:12 (none) kernel: Process rmmod (pid: 125, stackpage=cf1ad000)
    Jan 30 18:22:12 (none) kernel: Stack: c012fdeb cf1be4e0 c13c85c0
    00000000 00001000 cf1be4e0 ffffffea 00000000
    Jan 30 18:22:12 (none) kernel: 00001000 cfc5baa8 00001000
    00000000 00001000 fffffff4 00000000 00000000
    Jan 30 18:22:12 (none) kernel: 00000000 cfc5ba40 cfc5baf0
    00000000 6c000000 c016109a cf1be4e0 bfffdd64
    Jan 30 18:22:12 (none) kernel: Call Trace: [<c012fdeb>] [<c016109a>]
    [<c013c66b>] [<c0108a1b>]
    Jan 30 18:22:12 (none) kernel:
    Jan 30 18:22:12 (none) kernel: Code: Bad EIP value

    >>EIP; 00000000 Before first symbol
    Trace; c012fdea <generic_file_write+452/6b8>
    Trace; c016109a <ext3_file_write+46/4c>
    Trace; c013c66a <sys_write+8e/c4>
    Trace; c0108a1a <system_call+32/38>


    Jan 30 18:22:12 (none) kernel: <1>Unable to handle kernel NULL pointer
    dereference at virtual address 00000032
    Jan 30 18:22:12 (none) kernel: printing eip:
    Jan 30 18:22:12 (none) kernel: c0153caa
    Jan 30 18:22:12 (none) kernel: *pde = 00000000
    Jan 30 18:22:12 (none) kernel: Oops: 0000
    Jan 30 18:22:12 (none) kernel: CPU: 0
    Jan 30 18:22:12 (none) kernel: EIP: 0010:[<c0153caa>] Not tainted
    Jan 30 18:22:12 (none) kernel: EFLAGS: 00010202
    Jan 30 18:22:12 (none) kernel: eax: cf091220 ebx: 0000000b ecx:
    00000000 edx: cfb4f220
    Jan 30 18:22:12 (none) kernel: esi: 00000000 edi: 00000000 ebp:
    cfb4f220 esp: cf1dfe10
    Jan 30 18:22:12 (none) kernel: ds: 0018 es: 0018 ss: 0018
    Jan 30 18:22:12 (none) kernel: Process usb.agent (pid: 161,
    stackpage=cf1df000)
    Jan 30 18:22:12 (none) kernel: Stack: 0000000b cfb4f220 00000000
    00000001 00000001 c013c01a 00000000 cfb4f220
    Jan 30 18:22:12 (none) kernel: 00000000 0000000b cf15ea20
    00000000 c011dcf9 cfb4f220 cf15ea20 cf1de000
    Jan 30 18:22:12 (none) kernel: cf15ea20 cf1de000 cf64977c
    cf15eb40 c011e597 cf1de000 00000000 cf649760
    Jan 30 18:22:12 (none) kernel: Call Trace: [<c013c01a>] [<c011dcf9>]
    [<c011e597>] [<c0108fda>] [<c0116215>]
    Jan 30 18:22:12 (none) kernel: [<c0115e70>] [<c012a480>] [<c012ad23>]
    [<c0116017>] [<c0115e70>] [<c0108b40>]
    Jan 30 18:22:12 (none) kernel: [<c0153caa>] [<c013c01a>] [<c014ad4e>]
    [<c0108a1b>]
    Jan 30 18:22:12 (none) kernel:
    Jan 30 18:22:12 (none) kernel: Code: 0f b7 46 32 25 00 f0 ff ff 66 3d 00
    40 74 0a b8 ec ff ff ff

    >>EIP; c0153caa <fcntl_dirnotify+3e/190> <=====
    Trace; c013c01a <filp_close+9e/bc>
    Trace; c011dcf8 <put_files_struct+4c/b4>
    Trace; c011e596 <do_exit+13e/350>
    Trace; c0108fda <die+7e/80>
    Trace; c0116214 <do_page_fault+3a4/4da>
    Trace; c0115e70 <do_page_fault+0/4da>
    Trace; c012a480 <do_wp_page+64/208>
    Trace; c012ad22 <handle_mm_fault+8e/f8>
    Trace; c0116016 <do_page_fault+1a6/4da>
    Trace; c0115e70 <do_page_fault+0/4da>
    Trace; c0108b40 <error_code+34/40>
    Trace; c0153caa <fcntl_dirnotify+3e/190>
    Trace; c013c01a <filp_close+9e/bc>
    Trace; c014ad4e <sys_dup2+f6/160>
    Trace; c0108a1a <system_call+32/38>
    Code; c0153caa <fcntl_dirnotify+3e/190>
    00000000 <_EIP>:
    Code; c0153caa <fcntl_dirnotify+3e/190> <=====
    0: 0f b7 46 32 movzwl 0x32(%esi),%eax <=====
    Code; c0153cae <fcntl_dirnotify+42/190>
    4: 25 00 f0 ff ff and $0xfffff000,%eax
    Code; c0153cb2 <fcntl_dirnotify+46/190>
    9: 66 3d 00 40 cmp $0x4000,%ax
    Code; c0153cb6 <fcntl_dirnotify+4a/190>
    d: 74 0a je 19 <_EIP+0x19> c0153cc2
    <fcntl_dirnotify+56/190>
    Code; c0153cb8 <fcntl_dirnotify+4c/190>
    f: b8 ec ff ff ff mov $0xffffffec,%eax

    Jan 30 18:22:12 (none) kernel: <1>Unable to handle kernel NULL pointer
    dereference at virtual address 00000032
    Jan 30 18:22:12 (none) kernel: c0153caa
    Jan 30 18:22:12 (none) kernel: *pde = 00000000
    Jan 30 18:22:12 (none) kernel: Oops: 0000
    Jan 30 18:22:12 (none) kernel: CPU: 0
    Jan 30 18:22:12 (none) kernel: EIP: 0010:[<c0153caa>] Not tainted
    Jan 30 18:22:12 (none) kernel: EFLAGS: 00010202
    Jan 30 18:22:12 (none) kernel: eax: cf091220 ebx: 00000003 ecx:
    00000000 edx: cf1be960
    Jan 30 18:22:12 (none) kernel: esi: 00000000 edi: 00000000 ebp:
    cf1be960 esp: cf2b9e10
    Jan 30 18:22:12 (none) kernel: ds: 0018 es: 0018 ss: 0018
    Jan 30 18:22:12 (none) kernel: Process usb.agent (pid: 162,
    stackpage=cf2b9000)
    Jan 30 18:22:12 (none) kernel: Stack: 00000003 cf1be960 00000000
    00000001 00000001 c013c01a 00000000 cf1be960
    Jan 30 18:22:12 (none) kernel: 00000000 00000003 cf15e6e0
    00000001 c011dcf9 cf1be960 cf15e6e0 cf2b8000
    Jan 30 18:22:12 (none) kernel: cf15e6e0 cf2b8000 cf64963c
    cf15e800 c011e597 cf2b8000 00000000 cf649620
    Jan 30 18:22:12 (none) kernel: Call Trace: [<c013c01a>] [<c011dcf9>]
    [<c011e597>] [<c0108fda>] [<c0116215>]
    Jan 30 18:22:12 (none) kernel: [<c0115e70>] [<c012a480>] [<c012ad23>]
    [<c0116017>] [<c0115e70>] [<c0108b40>]
    Jan 30 18:22:12 (none) kernel: [<c0153caa>] [<c013c01a>] [<c014ad4e>]
    [<c0108a1b>]

    Jan 30 18:22:12 (none) kernel: Code: 0f b7 46 32 25 00 f0 ff ff 66 3d 00
    40 74 0a b8 ec ff ff ff

    >>EIP; c0153caa <fcntl_dirnotify+3e/190> <=====
    Trace; c013c01a <filp_close+9e/bc>
    Trace; c011dcf8 <put_files_struct+4c/b4>
    Trace; c011e596 <do_exit+13e/350>
    Trace; c0108fda <die+7e/80>
    Trace; c0116214 <do_page_fault+3a4/4da>
    Trace; c0115e70 <do_page_fault+0/4da>
    Trace; c012a480 <do_wp_page+64/208>
    Trace; c012ad22 <handle_mm_fault+8e/f8>
    Trace; c0116016 <do_page_fault+1a6/4da>
    Trace; c0115e70 <do_page_fault+0/4da>
    Trace; c0108b40 <error_code+34/40>
    Trace; c0153caa <fcntl_dirnotify+3e/190>
    Trace; c013c01a <filp_close+9e/bc>
    Trace; c014ad4e <sys_dup2+f6/160>
    Trace; c0108a1a <system_call+32/38>
    Code; c0153caa <fcntl_dirnotify+3e/190>
    00000000 <_EIP>:
    Code; c0153caa <fcntl_dirnotify+3e/190> <=====
    0: 0f b7 46 32 movzwl 0x32(%esi),%eax <=====
    Code; c0153cae <fcntl_dirnotify+42/190>
    4: 25 00 f0 ff ff and $0xfffff000,%eax
    Code; c0153cb2 <fcntl_dirnotify+46/190>
    9: 66 3d 00 40 cmp $0x4000,%ax
    Code; c0153cb6 <fcntl_dirnotify+4a/190>
    d: 74 0a je 19 <_EIP+0x19> c0153cc2
    <fcntl_dirnotify+56/190>
    Code; c0153cb8 <fcntl_dirnotify+4c/190>
    f: b8 ec ff ff ff mov $0xffffffec,%eax


    Jan 30 18:22:12 (none) kernel: <1>Unable to handle kernel NULL pointer
    dereference at virtual address 00000032
    Jan 30 18:22:12 (none) kernel: c0153caa
    Jan 30 18:22:12 (none) kernel: *pde = 00000000
    Jan 30 18:22:12 (none) kernel: Oops: 0000
    Jan 30 18:22:12 (none) kernel: CPU: 0
    Jan 30 18:22:12 (none) kernel: EIP: 0010:[<c0153caa>] Not tainted
    Jan 30 18:22:12 (none) kernel: EFLAGS: 00010202
    Jan 30 18:22:12 (none) kernel: eax: cf091220 ebx: 00000003 ecx:
    00000000 edx: cfb4f220
    Jan 30 18:22:12 (none) kernel: esi: 00000000 edi: 00000000 ebp:
    cfb4f220 esp: cefb7f54
    Jan 30 18:22:12 (none) kernel: ds: 0018 es: 0018 ss: 0018
    Jan 30 18:22:12 (none) kernel: Process usb.agent (pid: 158,
    stackpage=cefb7000)
    Jan 30 18:22:12 (none) kernel: Stack: 00000003 cfb4f220 00000000
    00000001 00000001 c013c01a 00000000 cfb4f220
    Jan 30 18:22:12 (none) kernel: 00000000 00000003 cfb7e1e0
    00000000 c011dcf9 cfb4f220 cfb7e1e0 cefb6000
    Jan 30 18:22:12 (none) kernel: cfb7e1e0 cefb6000 bffff95c
    cfb7e300 c011e597 cefb6000 4017f384 0000008b
    Jan 30 18:22:12 (none) kernel: Call Trace: [<c013c01a>] [<c011dcf9>]
    [<c011e597>] [<c011e7ce>] [<c0108a1b>]

    Jan 30 18:22:12 (none) kernel: Code: 0f b7 46 32 25 00 f0 ff ff 66 3d 00
    40 74 0a b8 ec ff ff ff

    >>EIP; c0153caa <fcntl_dirnotify+3e/190> <=====
    Trace; c013c01a <filp_close+9e/bc>
    Trace; c011dcf8 <put_files_struct+4c/b4>
    Trace; c011e596 <do_exit+13e/350>
    Trace; c011e7ce <sys_exit+e/10>
    Trace; c0108a1a <system_call+32/38>
    Code; c0153caa <fcntl_dirnotify+3e/190>
    00000000 <_EIP>:
    Code; c0153caa <fcntl_dirnotify+3e/190> <=====
    0: 0f b7 46 32 movzwl 0x32(%esi),%eax <=====
    Code; c0153cae <fcntl_dirnotify+42/190>
    4: 25 00 f0 ff ff and $0xfffff000,%eax
    Code; c0153cb2 <fcntl_dirnotify+46/190>
    9: 66 3d 00 40 cmp $0x4000,%ax
    Code; c0153cb6 <fcntl_dirnotify+4a/190>
    d: 74 0a je 19 <_EIP+0x19> c0153cc2
    <fcntl_dirnotify+56/190>
    Code; c0153cb8 <fcntl_dirnotify+4c/190>
    f: b8 ec ff ff ff mov $0xffffffec,%eax



    Jan 30 18:22:12 (none) kernel: <1>Unable to handle kernel NULL pointer
    dereference at virtual address 000000a8
    Jan 30 18:22:12 (none) kernel: c013c54a
    Jan 30 18:22:12 (none) kernel: *pde = 00000000
    Jan 30 18:22:12 (none) kernel: Oops: 0000
    Jan 30 18:22:12 (none) kernel: CPU: 0
    Jan 30 18:22:12 (none) kernel: EIP: 0010:[<c013c54a>] Not tainted
    Jan 30 18:22:12 (none) kernel: EFLAGS: 00010202
    Jan 30 18:22:12 (none) kernel: eax: cf091220 ebx: cfb4f220 ecx:
    00000000 edx: 00000000
    Jan 30 18:22:12 (none) kernel: esi: 00000000 edi: 00000000 ebp:
    00000080 esp: ceffbfb0
    Jan 30 18:22:12 (none) kernel: ds: 0018 es: 0018 ss: 0018
    Jan 30 18:22:12 (none) kernel: Process usb.agent (pid: 141,
    stackpage=ceffb000)
    Jan 30 18:22:12 (none) kernel: Stack: ceffa000 00000080 bffff8dc
    bffff89c c0108a1b 00000000 bffff8dc 00000080
    Jan 30 18:22:12 (none) kernel: 00000080 bffff8dc bffff89c
    00000003 0000002b 0000002b 00000003 4012b3c4
    Jan 30 18:22:12 (none) kernel: 00000023 00000293 bffff86c 0000002b
    Jan 30 18:22:12 (none) kernel: Call Trace: [<c0108a1b>]

    Jan 30 18:22:12 (none) kernel: Code: 83 ba a8 00 00 00 00 74 2e 8b 82 98
    00 00 00 f6 40 28 40 74

    >>EIP; c013c54a <sys_read+32/c4> <=====
    Trace; c0108a1a <system_call+32/38>
    Code; c013c54a <sys_read+32/c4>
    00000000 <_EIP>:
    Code; c013c54a <sys_read+32/c4> <=====
    0: 83 ba a8 00 00 00 00 cmpl $0x0,0xa8(%edx) <=====
    Code; c013c550 <sys_read+38/c4>
    7: 74 2e je 37 <_EIP+0x37> c013c580
    <sys_read+68/c4>
    Code; c013c552 <sys_read+3a/c4>
    9: 8b 82 98 00 00 00 mov 0x98(%edx),%eax
    Code; c013c558 <sys_read+40/c4>
    f: f6 40 28 40 testb $0x40,0x28(%eax)
    Code; c013c55c <sys_read+44/c4>
    13: 74 00 je 15 <_EIP+0x15> c013c55e
    <sys_read+46/c4>


    Jan 30 18:22:12 (none) kernel: <1>Unable to handle kernel NULL pointer
    dereference at virtual address 00000032
    Jan 30 18:22:12 (none) kernel: c0153caa
    Jan 30 18:22:12 (none) kernel: *pde = 00000000
    Jan 30 18:22:12 (none) kernel: Oops: 0000
    Jan 30 18:22:12 (none) kernel: CPU: 0
    Jan 30 18:22:12 (none) kernel: EIP: 0010:[<c0153caa>] Not tainted
    Jan 30 18:22:12 (none) kernel: EFLAGS: 00010202
    Jan 30 18:22:12 (none) kernel: eax: cf091220 ebx: 00000001 ecx:
    00000000 edx: cfb4f220
    Jan 30 18:22:12 (none) kernel: esi: 00000000 edi: 00000000 ebp:
    cfb4f220 esp: ceffbe54
    Jan 30 18:22:12 (none) kernel: ds: 0018 es: 0018 ss: 0018
    Jan 30 18:22:12 (none) kernel: Process usb.agent (pid: 141,
    stackpage=ceffb000)
    Jan 30 18:22:12 (none) kernel: Stack: 00000001 cfb4f220 00000000
    00000001 00000001 c013c01a 00000000 cfb4f220
    Jan 30 18:22:12 (none) kernel: 00000000 00000001 cfb7e040
    00000000 c011dcf9 cfb4f220 cfb7e040 ceffa000
    Jan 30 18:22:12 (none) kernel: cfb7e040 ceffa000 cf649a9c
    cfb7e160 c011e597 ceffa000 00000000 cf649a80
    Jan 30 18:22:12 (none) kernel: Call Trace: [<c013c01a>] [<c011dcf9>]
    [<c011e597>] [<c0108fda>] [<c0116215>]
    Jan 30 18:22:12 (none) kernel: [<c0115e70>] [<c0116017>] [<c0115e70>]
    [<c0108b40>] [<c013c54a>] [<c0108a1b>]

    Jan 30 18:22:12 (none) kernel: Code: 0f b7 46 32 25 00 f0 ff ff 66 3d 00
    40 74 0a b8 ec ff ff ff

    >>EIP; c0153caa <fcntl_dirnotify+3e/190> <=====
    Trace; c013c01a <filp_close+9e/bc>
    Trace; c011dcf8 <put_files_struct+4c/b4>
    Trace; c011e596 <do_exit+13e/350>
    Trace; c0108fda <die+7e/80>
    Trace; c0116214 <do_page_fault+3a4/4da>
    Trace; c0115e70 <do_page_fault+0/4da>
    Trace; c0116016 <do_page_fault+1a6/4da>
    Trace; c0115e70 <do_page_fault+0/4da>
    Trace; c0108b40 <error_code+34/40>
    Trace; c013c54a <sys_read+32/c4>
    Trace; c0108a1a <system_call+32/38>
    Code; c0153caa <fcntl_dirnotify+3e/190>
    00000000 <_EIP>:
    Code; c0153caa <fcntl_dirnotify+3e/190> <=====
    0: 0f b7 46 32 movzwl 0x32(%esi),%eax <=====
    Code; c0153cae <fcntl_dirnotify+42/190>
    4: 25 00 f0 ff ff and $0xfffff000,%eax
    Code; c0153cb2 <fcntl_dirnotify+46/190>
    9: 66 3d 00 40 cmp $0x4000,%ax
    Code; c0153cb6 <fcntl_dirnotify+4a/190>
    d: 74 0a je 19 <_EIP+0x19> c0153cc2
    <fcntl_dirnotify+56/190>
    Code; c0153cb8 <fcntl_dirnotify+4c/190>
    f: b8 ec ff ff ff mov $0xffffffec,%eax


    ---------------------- following OOPS on Alt-SysRQ-U

    Jan 30 18:22:20 (none) kernel: Remounting device 03:06 ... <1>Unable to
    handle kernel NULL pointer dereference at virtual address 00000032
    Jan 30 18:22:20 (none) kernel: printing eip:
    Jan 30 18:22:20 (none) kernel: c01ceb54
    Jan 30 18:22:20 (none) kernel: *pde = 00000000
    Jan 30 18:22:20 (none) kernel: Oops: 0000
    Jan 30 18:22:20 (none) kernel: CPU: 0
    Jan 30 18:22:20 (none) kernel: EIP: 0010:[<c01ceb54>] Not tainted
    Jan 30 18:22:20 (none) kernel: EFLAGS: 00010202
    Jan 30 18:22:20 (none) kernel: eax: 00000000 ebx: cfb55470 ecx:
    cfce8f20 edx: cf1be4e0
    Jan 30 18:22:20 (none) kernel: esi: cfb55400 edi: 0000000f ebp:
    0008e000 esp: cfc3bfbc
    Jan 30 18:22:20 (none) kernel: ds: 0018 es: 0018 ss: 0018
    Jan 30 18:22:20 (none) kernel: Process bdflush (pid: 6, stackpage=cfc3b000)
    Jan 30 18:22:20 (none) kernel: Stack: cfb55400 00000001 cfc3a34e
    cfc3a34e c01cec8c cfb55400 00000001 cfc3a000
    Jan 30 18:22:20 (none) kernel: c024c88e c014096e 00010f00
    cfe6bfbc c02bb9e8 c0107058 c02bb9e8 00000078
    Jan 30 18:22:20 (none) kernel: c02a5fc0
    Jan 30 18:22:20 (none) kernel: Call Trace: [<c01cec8c>] [<c014096e>]
    [<c0107058>]
    Jan 30 18:22:20 (none) kernel:
    Jan 30 18:22:20 (none) kernel: Code: 0f b7 40 32 25 00 f0 ff ff 66 3d 00
    80 75 04 80 62 1c fd 8bReading Oops report from the terminal
    Jan 30 18:22:20 (none) kernel: Remounting device 03:06 ... <1>Unable to
    handle kernel NULL pointer dereference at virtual address 00000032
    Jan 30 18:22:20 (none) kernel: c01ceb54
    Jan 30 18:22:20 (none) kernel: *pde = 00000000
    Jan 30 18:22:20 (none) kernel: Oops: 0000
    Jan 30 18:22:20 (none) kernel: CPU: 0
    Jan 30 18:22:20 (none) kernel: EIP: 0010:[<c01ceb54>] Not tainted
    Using defaults from ksymoops -t elf32-i386 -a i386
    Jan 30 18:22:20 (none) kernel: EFLAGS: 00010202
    Jan 30 18:22:20 (none) kernel: eax: 00000000 ebx: cfb55470 ecx:
    cfce8f20 edx: cf1be4e0
    Jan 30 18:22:20 (none) kernel: esi: cfb55400 edi: 0000000f ebp:
    0008e000 esp: cfc3bfbc
    Jan 30 18:22:20 (none) kernel: ds: 0018 es: 0018 ss: 0018
    Jan 30 18:22:20 (none) kernel: Process bdflush (pid: 6, stackpage=cfc3b000)
    Jan 30 18:22:20 (none) kernel: Stack: cfb55400 00000001 cfc3a34e
    cfc3a34e c01cec8c cfb55400 00000001 cfc3a000
    Jan 30 18:22:20 (none) kernel: c024c88e c014096e 00010f00
    cfe6bfbc c02bb9e8 c0107058 c02bb9e8 00000078
    Jan 30 18:22:20 (none) kernel: c02a5fc0
    Jan 30 18:22:20 (none) kernel: Call Trace: [<c01cec8c>] [<c014096e>]
    [<c0107058>]

    Jan 30 18:22:20 (none) kernel: Code: 0f b7 40 32 25 00 f0 ff ff 66 3d 00
    80 75 04 80 62 1c fd 8b

    >>EIP; c01ceb54 <go_sync+a0/174> <=====
    Trace; c01cec8c <do_emergency_sync+64/110>
    Trace; c014096e <bdflush+9e/100>
    Trace; c0107058 <kernel_thread+28/38>
    Code; c01ceb54 <go_sync+a0/174>
    00000000 <_EIP>:
    Code; c01ceb54 <go_sync+a0/174> <=====
    0: 0f b7 40 32 movzwl 0x32(%eax),%eax <=====
    Code; c01ceb58 <go_sync+a4/174>
    4: 25 00 f0 ff ff and $0xfffff000,%eax
    Code; c01ceb5c <go_sync+a8/174>
    9: 66 3d 00 80 cmp $0x8000,%ax
    Code; c01ceb60 <go_sync+ac/174>
    d: 75 04 jne 13 <_EIP+0x13> c01ceb66
    <go_sync+b2/174>
    Code; c01ceb62 <go_sync+ae/174>
    f: 80 62 1c fd andb $0xfd,0x1c(%edx)
    Code; c01ceb66 <go_sync+b2/174>
    13: 8b 00 mov (%eax),%eax



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