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    SubjectRe: [OOPS] 2.5.27 - __free_pages_ok()
    From
    Date
    On Tue, 2002-07-23 at 12:49, William Lee Irwin III wrote:
    > Stands a good chance of being fixed by the recent rmap.c bugfix posted
    > by Rik. I'm seeing deadlocks every other boot over here, the cause of
    > which I've not yet been able to discover.
    Still broken with the rmap patch posted today. Output attached.

    -Paul Larson

    ksymoops 2.4.5 on i686 2.4.18-mts. Options used
    -V (default)
    -K (specified)
    -L (specified)
    -O (specified)
    -m linux-2.5.27/System.map (specified)

    15488MB HIGHMEM available.
    WARNING: MP table in the EBDA can be UNSAFE, contact linux-smp@vger.kernel.org if you experience SMP problems!
    cpu: 0, clocks: 99990, slice: 3030
    cpu: 6, clocks: 99990, slice: 3030
    cpu: 5, clocks: 99990, slice: 3030
    cpu: 7, clocks: 99990, slice: 3030
    cpu: 1, clocks: 99990, slice: 3030
    cpu: 2, clocks: 99990, slice: 3030
    cpu: 3, clocks: 99990, slice: 3030
    cpu: 4, clocks: 99990, slice: 3030
    ds: no socket drivers loaded!
    Press 'I' to ekernel BUG at page_alloc.c:98!
    CPU: 6
    EIP: 0010:[<c01311b6>] Not tainted
    Using defaults from ksymoops -t elf32-i386 -a i386
    EFLAGS: 00010282
    eax: 02010110 ebx: cbffd104 ecx: 00000000 edx: 00000000
    esi: 00000120 edi: 00000000 ebp: cbffd104 esp: f7517c68
    ds: 0018 es: 0018 ss: 0018
    Stack: cbffd104 00000120 c03e10f8 f7512f00 c03e10e8 c01268ad 00000000 00000000
    c03e10e8 f7512f00 c03e10f8 cbffd104 c0130432 c0131b25 cbffd104 c01323ee
    00000059 c0129789 cbffd104 f7512f00 00000000 c02d9d9c f7512f00 c0116185
    Call Trace: [<c01268ad>] [<c0130432>] [<c0131b25>] [<c01323ee>] [<c0129789>]
    [<c0116185>] [<c0142393>] [<c0142557>] [<c0157f45>] [<c0157b04>] [<c012ac41>]
    [<c0142b2e>] [<c0142df7>] [<c0142e0e>] [<c0105af3>] [<c0106df3>]
    Code: 0f 0b 62 00 f1 60 2d c0 89 f6 8b 45 14 a8 10 74 29 b8 04 00


    >>EIP; c01311b6 <__free_pages_ok+86/308> <=====

    >>eax; 02010110 Before first symbol
    >>ebx; cbffd104 <END_OF_CODE+bbc4bc0/????>
    >>ebp; cbffd104 <END_OF_CODE+bbc4bc0/????>
    >>esp; f7517c68 <END_OF_CODE+370df724/????>

    Trace; c01268ad <unmap_page_range+3d/5c>
    Trace; c0130432 <lru_cache_del+e/16>
    Trace; c0131b25 <page_cache_release+2d/30>
    Trace; c01323ee <free_page_and_swap_cache+32/34>
    Trace; c0129789 <exit_mmap+13d/1f8>
    Trace; c0116185 <mmput+49/60>
    Trace; c0142393 <exec_mmap+17b/1a4>
    Trace; c0142557 <flush_old_exec+9f/2e0>
    Trace; c0157f45 <load_elf_binary+441/ac0>
    Trace; c0157b04 <load_elf_binary+0/ac0>
    Trace; c012ac41 <file_read_actor+b5/e0>
    Trace; c0142b2e <search_binary_handler+a2/1c8>
    Trace; c0142df7 <do_execve+1a3/258>
    Trace; c0142e0e <do_execve+1ba/258>
    Trace; c0105af3 <sys_execve+2f/60>
    Trace; c0106df3 <syscall_call+7/b>

    Code; c01311b6 <__free_pages_ok+86/308>
    00000000 <_EIP>:
    Code; c01311b6 <__free_pages_ok+86/308> <=====
    0: 0f 0b ud2a <=====
    Code; c01311b8 <__free_pages_ok+88/308>
    2: 62 00 bound %eax,(%eax)
    Code; c01311ba <__free_pages_ok+8a/308>
    4: f1 (bad)
    Code; c01311bb <__free_pages_ok+8b/308>
    5: 60 pusha
    Code; c01311bc <__free_pages_ok+8c/308>
    6: 2d c0 89 f6 8b sub $0x8bf689c0,%eax
    Code; c01311c1 <__free_pages_ok+91/308>
    b: 45 inc %ebp
    Code; c01311c2 <__free_pages_ok+92/308>
    c: 14 a8 adc $0xa8,%al
    Code; c01311c4 <__free_pages_ok+94/308>
    e: 10 74 29 b8 adc %dh,0xffffffb8(%ecx,%ebp,1)
    Code; c01311c8 <__free_pages_ok+98/308>
    12: 04 00 add $0x0,%al

    Configurikernel BUG at page_alloc.c:98!
    CPU: 0
    EIP: 0010:[<c01311b6>] Not tainted
    EFLAGS: 00010286
    eax: 02010110 ebx: c393ab08 ecx: 00000000 edx: 00000000
    esi: 0000007f edi: 00000000 ebp: c393ab08 esp: f751bc68
    ds: 0018 es: 0018 ss: 0018
    Stack: c393ab08 0000007f c03de110 f750af20 c03de100 c01268ad 00000000 00000000
    c03de100 f750af20 c03de110 c393ab08 c0130432 c0131b25 c393ab08 c01323ee
    00000007 c0129789 c393ab08 f750af20 00000000 c02d9d9c f750af20 c0116185
    Call Trace: [<c01268ad>] [<c0130432>] [<c0131b25>] [<c01323ee>] [<c0129789>]
    [<c0116185>] [<c0142393Setting clock (localtime): Tue Jul 23 13:55:02 CDT 2002 >] [<c0142557>] [<c0157f45>] [<c0157b04>] [<c012ac41>]
    [<c0142b2e>] [<c0142df7>] [<c0142e0e>] [<c0105af3>] [<c0106df3>]
    Code: 0f 0b 62 00 f1 60 2d c0 89 f6 8b 45 14 a8 10 74 29 b8 04 00


    >>EIP; c01311b6 <__free_pages_ok+86/308> <=====

    >>eax; 02010110 Before first symbol
    >>ebx; c393ab08 <END_OF_CODE+35025c4/????>
    >>ebp; c393ab08 <END_OF_CODE+35025c4/????>
    >>esp; f751bc68 <END_OF_CODE+370e3724/????>

    Trace; c01268ad <unmap_page_range+3d/5c>
    Trace; c0130432 <lru_cache_del+e/16>
    Trace; c0131b25 <page_cache_release+2d/30>
    Trace; c01323ee <free_page_and_swap_cache+32/34>
    Trace; c0129789 <exit_mmap+13d/1f8>
    Trace; c0116185 <mmput+49/60>
    Trace; c0142b2e <search_binary_handler+a2/1c8>
    Trace; c0142df7 <do_execve+1a3/258>
    Trace; c0142e0e <do_execve+1ba/258>
    Trace; c0105af3 <sys_execve+2f/60>
    Trace; c0106df3 <syscall_call+7/b>

    Code; c01311b6 <__free_pages_ok+86/308>
    00000000 <_EIP>:
    Code; c01311b6 <__free_pages_ok+86/308> <=====
    0: 0f 0b ud2a <=====
    Code; c01311b8 <__free_pages_ok+88/308>
    2: 62 00 bound %eax,(%eax)
    Code; c01311ba <__free_pages_ok+8a/308>
    4: f1 (bad)
    Code; c01311bb <__free_pages_ok+8b/308>
    5: 60 pusha
    Code; c01311bc <__free_pages_ok+8c/308>
    6: 2d c0 89 f6 8b sub $0x8bf689c0,%eax
    Code; c01311c1 <__free_pages_ok+91/308>
    b: 45 inc %ebp
    Code; c01311c2 <__free_pages_ok+92/308>
    c: 14 a8 adc $0xa8,%al
    Code; c01311c4 <__free_pages_ok+94/308>
    e: 10 74 29 b8 adc %dh,0xffffffb8(%ecx,%ebp,1)
    Code; c01311c8 <__free_pages_ok+98/308>
    12: 04 00 add $0x0,%al

    kernel BUG at page_alloc.c:98!
    invalid operand: 0000
    CPU: 0
    EIP: 0010:[<c01311b6>] Not tainted
    EFLAGS: 00010286
    eax: 02010110 ebx: cbffa2f4 ecx: 00000000 edx: 00000000
    esi: 0000009a edi: 00000000 ebp: cbffa2f4 esp: f74d5f38
    ds: 0018 es: 0018 ss: 0018
    Stack: cbffa2f4 0000009a c03de110 f7512dc0 c03de100 c01268ad 00000000 4212ec44
    c03de100 f7512dc0 c03de110 cbffa2f4 c0130432 c0131b25 cbffa2f4 c01323ee
    00000007 c0129789 cbffa2f4 f7512dc0 4212ec44 f79166e0 00000000 c0116185
    Call Trace: [<c01268ad>] [<c0130432>] [<c0131b25>] [<c01323ee>] [<c0129789>]
    [<c0116185>] [<c011ae72>] [<c011b096>] [<c0106df3>]
    Code: 0f 0b 62 00 f1 60 2d c0 89 f6 8b 45 14 a8 10 74 29 b8 04 00


    >>EIP; c01311b6 <__free_pages_ok+86/308> <=====

    >>eax; 02010110 Before first symbol
    >>ebx; cbffa2f4 <END_OF_CODE+bbc1db0/????>
    >>ebp; cbffa2f4 <END_OF_CODE+bbc1db0/????>
    >>esp; f74d5f38 <END_OF_CODE+3709d9f4/????>

    Trace; c01268ad <unmap_page_range+3d/5c>
    Trace; c0130432 <lru_cache_del+e/16>
    Trace; c0131b25 <page_cache_release+2d/30>
    Trace; c01323ee <free_page_and_swap_cache+32/34>
    Trace; c0129789 <exit_mmap+13d/1f8>
    Trace; c0116185 <mmput+49/60>
    Trace; c011ae72 <do_exit+c2/2c0>
    Trace; c011b096 <sys_exit+e/10>
    Trace; c0106df3 <syscall_call+7/b>

    Code; c01311b6 <__free_pages_ok+86/308>
    00000000 <_EIP>:
    Code; c01311b6 <__free_pages_ok+86/308> <=====
    0: 0f 0b ud2a <=====
    Code; c01311b8 <__free_pages_ok+88/308>
    2: 62 00 bound %eax,(%eax)
    Code; c01311ba <__free_pages_ok+8a/308>
    4: f1 (bad)
    Code; c01311bb <__free_pages_ok+8b/308>
    5: 60 pusha
    Code; c01311bc <__free_pages_ok+8c/308>
    6: 2d c0 89 f6 8b sub $0x8bf689c0,%eax
    Code; c01311c1 <__free_pages_ok+91/308>
    b: 45 inc %ebp
    Code; c01311c2 <__free_pages_ok+92/308>
    c: 14 a8 adc $0xa8,%al
    Code; c01311c4 <__free_pages_ok+94/308>
    e: 10 74 29 b8 adc %dh,0xffffffb8(%ecx,%ebp,1)
    Code; c01311c8 <__free_pages_ok+98/308>
    12: 04 00 add $0x0,%al

    kernel BUG at page_alloc.c:98!
    invalid operand: 0000
    CPU: 2
    EIP: 0010:[<c01311b6>] Not tainted
    EFLAGS: 00010282
    eax: 02010110 ebx: cbff9cf0 ecx: 00000000 edx: 00000000
    esi: 0000008a edi: 00000000 ebp: cbff9cf0 esp: f74d5c68
    ds: 0018 es: 0018 ss: 0018
    Stack: cbff9cf0 0000008a c03df108 f7955bc0 c03df0f8 c01268ad c035aca8 c19a001c
    c035acc0 00000206 ffffffff cbff9cf0 c0130432 c0131b25 cbff9cf0 c01323ee
    00000085 c0129789 cbff9cf0 f7955bc0 00000000 c02d9d9c f7955bc0 c0116185
    Call Trace: [<c01268ad>] [<c0130432>] [<c0131b25>] [<c01323ee>] [<c0129789>]
    [<c0116185>] [<c0142393>] [<c0142557>] [<c0157f45>] [<c0157b04>] [<c0114435>]
    [<c012ac41>] [<c0142b2e>] [<c0142df7>] [<c0142e0e>] [<c0105af3>] [<c0106df3>]
    Code: 0f 0b 62 00 f1 60 2d c0 89 f6 8b 45 14 a8 10 74 29 b8 04 00


    >>EIP; c01311b6 <__free_pages_ok+86/308> <=====

    >>eax; 02010110 Before first symbol
    >>ebx; cbff9cf0 <END_OF_CODE+bbc17ac/????>
    >>ebp; cbff9cf0 <END_OF_CODE+bbc17ac/????>
    >>esp; f74d5c68 <END_OF_CODE+3709d724/????>

    Trace; c01268ad <unmap_page_range+3d/5c>
    Trace; c0130432 <lru_cache_del+e/16>
    Trace; c0131b25 <page_cache_release+2d/30>
    Trace; c01323ee <free_page_and_swap_cache+32/34>
    Trace; c0129789 <exit_mmap+13d/1f8>
    Trace; c0116185 <mmput+49/60>
    Trace; c0142393 <exec_mmap+17b/1a4>
    Trace; c0142557 <flush_old_exec+9f/2e0>
    Trace; c0157f45 <load_elf_binary+441/ac0>
    Trace; c0157b04 <load_elf_binary+0/ac0>
    Trace; c0114435 <default_wake_function+1d/34>
    Trace; c012ac41 <file_read_actor+b5/e0>
    Trace; c0142b2e <search_binary_handler+a2/1c8>
    Trace; c0142df7 <do_execve+1a3/258>
    Trace; c0142e0e <do_execve+1ba/258>
    Trace; c0105af3 <sys_execve+2f/60>
    Trace; c0106df3 <syscall_call+7/b>

    Code; c01311b6 <__free_pages_ok+86/308>
    00000000 <_EIP>:
    Code; c01311b6 <__free_pages_ok+86/308> <=====
    0: 0f 0b ud2a <=====
    Code; c01311b8 <__free_pages_ok+88/308>
    2: 62 00 bound %eax,(%eax)
    Code; c01311ba <__free_pages_ok+8a/308>
    4: f1 (bad)
    Code; c01311bb <__free_pages_ok+8b/308>
    5: 60 pusha
    Code; c01311bc <__free_pages_ok+8c/308>
    6: 2d c0 89 f6 8b sub $0x8bf689c0,%eax
    Code; c01311c1 <__free_pages_ok+91/308>
    b: 45 inc %ebp
    Code; c01311c2 <__free_pages_ok+92/308>
    c: 14 a8 adc $0xa8,%al
    Code; c01311c4 <__free_pages_ok+94/308>
    e: 10 74 29 b8 adc %dh,0xffffffb8(%ecx,%ebp,1)
    Code; c01311c8 <__free_pages_ok+98/308>
    12: 04 00 add $0x0,%al

    kernel BUG at page_alloc.c:98!
    invalid operand: 0000
    CPU: 0
    EIP: 0010:[<c01311b6>] Not tainted
    EFLAGS: 00010282
    eax: 02010110 ebx: cbfe3e24 ecx: 00000000 edx: 00000000
    esi: 00000128 edi: 00000000 ebp: cbfe3e24 esp: f74cff38
    ds: 0018 es: 0018 ss: 0018
    Stack: cbfe3e24 00000128 c03de110 f7512c80 c03de100 c01268ad 00000000 4212ec44
    c03de100 f7512c80 c03de110 cbfe3e24 c0130432 c0131b25 cbfe3e24 c01323ee
    0000005b c0129789 cbfe3e24 f7512c80 4212ec44 f79166e0 00000100 c0116185
    Call Trace: [<c01268ad>] [<c0130432>] [<c0131b25>] [<c01323ee>] [<c0129789>]
    [<c0116185>] [<c011ae72>] [<c011b096>] [<c0106df3>]
    Code: 0f 0b 62 00 f1 60 2d c0 89 f6 8b 45 14 a8 10 74 29 b8 04 00


    >>EIP; c01311b6 <__free_pages_ok+86/308> <=====

    >>eax; 02010110 Before first symbol
    >>ebx; cbfe3e24 <END_OF_CODE+bbab8e0/????>
    >>ebp; cbfe3e24 <END_OF_CODE+bbab8e0/????>
    >>esp; f74cff38 <END_OF_CODE+370979f4/????>

    Trace; c01268ad <unmap_page_range+3d/5c>
    Trace; c0130432 <lru_cache_del+e/16>
    Trace; c0131b25 <page_cache_release+2d/30>
    Trace; c01323ee <free_page_and_swap_cache+32/34>
    Trace; c0129789 <exit_mmap+13d/1f8>
    Trace; c0116185 <mmput+49/60>
    Trace; c011ae72 <do_exit+c2/2c0>
    Trace; c011b096 <sys_exit+e/10>
    Trace; c0106df3 <syscall_call+7/b>

    Code; c01311b6 <__free_pages_ok+86/308>
    00000000 <_EIP>:
    Code; c01311b6 <__free_pages_ok+86/308> <=====
    0: 0f 0b ud2a <=====
    Code; c01311b8 <__free_pages_ok+88/308>
    2: 62 00 bound %eax,(%eax)
    Code; c01311ba <__free_pages_ok+8a/308>
    4: f1 (bad)
    Code; c01311bb <__free_pages_ok+8b/308>
    5: 60 pusha
    Code; c01311bc <__free_pages_ok+8c/308>
    6: 2d c0 89 f6 8b sub $0x8bf689c0,%eax
    Code; c01311c1 <__free_pages_ok+91/308>
    b: 45 inc %ebp
    Code; c01311c2 <__free_pages_ok+92/308>
    c: 14 a8 adc $0xa8,%al
    Code; c01311c4 <__free_pages_ok+94/308>
    e: 10 74 29 b8 adc %dh,0xffffffb8(%ecx,%ebp,1)
    Code; c01311c8 <__free_pages_ok+98/308>
    12: 04 00 add $0x0,%al

    kernel BUG at page_alloc.c:98!
    invalid operand: 0000
    CPU: 0
    EIP: 0010:[<c01311b6>] Not tainted
    EFLAGS: 00010282
    eax: 02010110 ebx: cbfe3b64 ecx: 00000000 edx: 00000000
    esi: 00000128 edi: 00000000 ebp: cbfe3b64 esp: f74abc68
    ds: 0018 es: 0018 ss: 0018
    Stack: cbfe3b64 00000128 c03de110 f7512d20 c03de100 c01268ad 00000000 00000000
    c03de100 f7512d20 c03de110 cbfe3b64 c0130432 c0131b25 cbfe3b64 c01323ee
    0000005b c0129789 cbfe3b64 f7512d20 00000000 c02d9d9c f7512d20 c0116185
    Call Trace: [<c01268ad>] [<c0130432>] [<c0131b25>] [<c01323ee>] [<c0129789>]
    [<c0116185>] [<c0142393>] [<c0142557>] [<c0157f45>] [<c0157b04>] [<c012ac41>]
    [<c0142b2e>] [<c0142df7>] [<c0142e0e>] [<c0105af3>] [<c0106df3>]
    Code: 0f 0b 62 00 f1 60 2d c0 89 f6 8b 45 14 a8 10 74 29 b8 04 00


    >>EIP; c01311b6 <__free_pages_ok+86/308> <=====

    >>eax; 02010110 Before first symbol
    >>ebx; cbfe3b64 <END_OF_CODE+bbab620/????>
    >>ebp; cbfe3b64 <END_OF_CODE+bbab620/????>
    >>esp; f74abc68 <END_OF_CODE+37073724/????>

    Trace; c01268ad <unmap_page_range+3d/5c>
    Trace; c0130432 <lru_cache_del+e/16>
    Trace; c0131b25 <page_cache_release+2d/30>
    Trace; c01323ee <free_page_and_swap_cache+32/34>
    Trace; c0129789 <exit_mmap+13d/1f8>
    Trace; c0116185 <mmput+49/60>
    Trace; c0142393 <exec_mmap+17b/1a4>
    Trace; c0142557 <flush_old_exec+9f/2e0>
    Trace; c0157f45 <load_elf_binary+441/ac0>
    Trace; c0157b04 <load_elf_binary+0/ac0>
    Trace; c012ac41 <file_read_actor+b5/e0>
    Trace; c0142b2e <search_binary_handler+a2/1c8>
    Trace; c0142df7 <do_execve+1a3/258>
    Trace; c0142e0e <do_execve+1ba/258>
    Trace; c0105af3 <sys_execve+2f/60>
    Trace; c0106df3 <syscall_call+7/b>

    Code; c01311b6 <__free_pages_ok+86/308>
    00000000 <_EIP>:
    Code; c01311b6 <__free_pages_ok+86/308> <=====
    0: 0f 0b ud2a <=====
    Code; c01311b8 <__free_pages_ok+88/308>
    2: 62 00 bound %eax,(%eax)
    Code; c01311ba <__free_pages_ok+8a/308>
    4: f1 (bad)
    Code; c01311bb <__free_pages_ok+8b/308>
    5: 60 pusha
    Code; c01311bc <__free_pages_ok+8c/308>
    6: 2d c0 89 f6 8b sub $0x8bf689c0,%eax
    Code; c01311c1 <__free_pages_ok+91/308>
    b: 45 inc %ebp
    Code; c01311c2 <__free_pages_ok+92/308>
    c: 14 a8 adc $0xa8,%al
    Code; c01311c4 <__free_pages_ok+94/308>
    e: 10 74 29 b8 adc %dh,0xffffffb8(%ecx,%ebp,1)
    Code; c01311c8 <__free_pages_ok+98/308>
    12: 04 00 add $0x0,%al

    kernel BUG at page_alloc.c:98!
    invalid operand: 0000
    CPU: 6
    EIP: 0010:[<c01311b6>] Not tainted
    EFLAGS: 00010286
    eax: 02010110 ebx: cbfe4194 ecx: 00000000 edx: 00000000
    esi: 00000128 edi: 00000000 ebp: cbfe4194 esp: f74cff38
    ds: 0018 es: 0018 ss: 0018
    Stack: cbfe4194 00000128 c03e10f8 f7512b40 00000010 00000293 c035aca8 c19a001c
    c035acc0 00000207 ffffffff cbfe4194 c0130432 c0131b25 cbfe4194 c01323ee
    0000005d c0129789 cbfe4194 f7512b40 4212ec44 f79166e0 00008b00 c0116185
    Call Trace: [<c0130432>] [<c0131b25>] [<c01323ee>] [<c0129789>] [<c0116185>]
    [<c011ae72>] [<c011b096>] [<c0106df3>]
    Code: 0f 0b 62 00 f1 60 2d c0 89 f6 8b 45 14 a8 10 74 29 b8 04 00


    >>EIP; c01311b6 <__free_pages_ok+86/308> <=====

    >>eax; 02010110 Before first symbol
    >>ebx; cbfe4194 <END_OF_CODE+bbabc50/????>
    >>ebp; cbfe4194 <END_OF_CODE+bbabc50/????>
    >>esp; f74cff38 <END_OF_CODE+370979f4/????>

    Trace; c0130432 <lru_cache_del+e/16>
    Trace; c0131b25 <page_cache_release+2d/30>
    Trace; c01323ee <free_page_and_swap_cache+32/34>
    Trace; c0129789 <exit_mmap+13d/1f8>
    Trace; c0116185 <mmput+49/60>
    Trace; c011ae72 <do_exit+c2/2c0>
    Trace; c011b096 <sys_exit+e/10>
    Trace; c0106df3 <syscall_call+7/b>

    Code; c01311b6 <__free_pages_ok+86/308>
    00000000 <_EIP>:
    Code; c01311b6 <__free_pages_ok+86/308> <=====
    0: 0f 0b ud2a <=====
    Code; c01311b8 <__free_pages_ok+88/308>
    2: 62 00 bound %eax,(%eax)
    Code; c01311ba <__free_pages_ok+8a/308>
    4: f1 (bad)
    Code; c01311bb <__free_pages_ok+8b/308>
    5: 60 pusha
    Code; c01311bc <__free_pages_ok+8c/308>
    6: 2d c0 89 f6 8b sub $0x8bf689c0,%eax
    Code; c01311c1 <__free_pages_ok+91/308>
    b: 45 inc %ebp
    Code; c01311c2 <__free_pages_ok+92/308>
    c: 14 a8 adc $0xa8,%al
    Code; c01311c4 <__free_pages_ok+94/308>
    e: 10 74 29 b8 adc %dh,0xffffffb8(%ecx,%ebp,1)
    Code; c01311c8 <__free_pages_ok+98/308>
    12: 04 00 add $0x0,%al

    kernel BUG at page_alloc.c:98!
    invalid operand: 0000
    CPU: 0
    EIP: 0010:[<c01311b6>] Not tainted
    EFLAGS: 00010282
    eax: 02010110 ebx: cbfe2c9c ecx: 00000000 edx: 00000000
    esi: 00000128 edi: 00000000 ebp: cbfe2c9c esp: f74a1c68
    ds: 0018 es: 0018 ss: 0018
    Stack: cbfe2c9c 00000128 c03de110 f7512aa0 c03de100 c01268ad 00000000 00000000
    c03de100 f7512aa0 c03d
    Warning (Oops_read): Code line not seen, dumping what data is available


    >>EIP; c01311b6 <__free_pages_ok+86/308> <=====

    >>eax; 02010110 Before first symbol
    >>ebx; cbfe2c9c <END_OF_CODE+bbaa758/????>
    >>ebp; cbfe2c9c <END_OF_CODE+bbaa758/????>
    >>esp; f74a1c68 <END_OF_CODE+37069724/????>


    1 warning issued. Results may not be reliable.
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