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    SubjectRe: Kernel BUG linux-2.5.67
    Date
    Oops... I forgot to mention I use HugeTLB Pages...


    > Hello
    >
    > I tried linux-2.5.67 this morning...
    >
    > instant oops with a small multi-threaded program using futex()
    >
    > ---------------------------------
    > var/log/messages ------------------------------------------------------
    > Apr 8 07:40:12 test1 kernel: ------------[ cut here ]------------
    > Apr 8 07:40:12 test1 kernel: kernel BUG at include/linux/mm.h:234!
    > Apr 8 07:40:12 test1 kernel: invalid operand: 0000 [#1]
    > Apr 8 07:40:12 test1 kernel: CPU: 0
    > Apr 8 07:40:12 test1 kernel: EIP: 0060:[<c012d0d5>] Not tainted
    > Apr 8 07:40:12 test1 kernel: EFLAGS: 00010246
    > Apr 8 07:40:12 test1 kernel: EIP is at futex_wake+0xeb/0x1ae
    > Apr 8 07:40:12 test1 kernel: eax: 00000000 ebx: e2701eec ecx:
    e35e1940
    > edx: 00000001
    > Apr 8 07:40:12 test1 kernel: esi: c03bb410 edi: c15fed08 ebp:
    c03bb410
    > esp: e2ab9f5c
    > Apr 8 07:40:12 test1 kernel: ds: 007b es: 007b ss: 0068
    > Apr 8 07:40:12 test1 kernel: Process tstfutex (pid: 1266,
    > threadinfo=e2ab8000 task=e2abcca0)
    > Apr 8 07:40:12 test1 kernel: Stack: e2701f08 00000000 b08fea20 00000001
    > 00000ab4 00000001 089edaa0 e2ab8000
    > Apr 8 07:40:12 test1 kernel: c012d984 089edab4 00000ab4 00000001
    > 7fffffff 00000000 00000001 c012da25
    > Apr 8 07:40:12 test1 kernel: 089edab4 00000001 00000001 7fffffff
    > 01f78a40 00000003 089edab4 00000000
    > Apr 8 07:40:12 test1 kernel: Call Trace:
    > Apr 8 07:40:12 test1 kernel: [<c012d984>] do_futex+0x8c/0x8e
    > Apr 8 07:40:12 test1 kernel: [<c012da25>] sys_futex+0x9f/0xce
    > Apr 8 07:40:12 test1 kernel: [<c010aa07>] syscall_call+0x7/0xb
    > Apr 8 07:40:12 test1 kernel:
    > Apr 8 07:40:12 test1 kernel: Code: 0f 0b ea 00 ea 08 2d c0 eb c8 8b 07 a9
    > 00 08 00 00 75 da 8b
    > Apr 8 07:40:12 test1 kernel: ------------[ cut here ]------------
    > Apr 8 07:40:12 test1 kernel: kernel BUG at include/linux/mm.h:234!
    > Apr 8 07:40:12 test1 kernel: invalid operand: 0000 [#2]
    > Apr 8 07:40:12 test1 kernel: CPU: 1
    > Apr 8 07:40:12 test1 kernel: EIP: 0060:[<c012d3f6>] Not tainted
    > Apr 8 07:40:12 test1 kernel: EFLAGS: 00010246
    > Apr 8 07:40:12 test1 kernel: EIP is at futex_wait+0x1f4/0x2ec
    > Apr 8 07:40:12 test1 kernel: eax: 00000000 ebx: c15fed08 ecx:
    e2701eec
    > edx: e2701eec
    > Apr 8 07:40:12 test1 kernel: esi: 7fffffff edi: e2700000 ebp:
    e2701f08
    > esp: e2701ed8
    > Apr 8 07:40:12 test1 kernel: ds: 007b es: 007b ss: 0068
    > Apr 8 07:40:12 test1 kernel: Process tstfutex (pid: 1256,
    > threadinfo=e2700000 task=e2714ca0)
    > Apr 8 07:40:12 test1 kernel: Stack: e2701f08 089edab4 f6314800 c012d198
    > 00000000 e2701eec e2701eec 00000001
    > Apr 8 07:40:12 test1 kernel: e2701f58 e2701f58 c15fed08 00000ab4
    > 089ed000 f6314800 e2701f10 e2701f10
    > Apr 8 07:40:12 test1 kernel: c012d198 ffffffff 00000000 e35e3ef8
    > 00000282 00000000 e2714ca0 c011afd6
    > Apr 8 07:40:12 test1 kernel: Call Trace:
    > Apr 8 07:40:12 test1 kernel: [<c012d198>] futex_vcache_callback+0x0/0x6a
    > Apr 8 07:40:12 test1 kernel: [<c012d198>] futex_vcache_callback+0x0/0x6a
    > Apr 8 07:40:12 test1 kernel: [<c011afd6>] default_wake_function+0x0/0x12
    > Apr 8 07:40:12 test1 kernel: [<c011afd6>] default_wake_function+0x0/0x12
    > Apr 8 07:40:12 test1 kernel: [<c012d972>] do_futex+0x7a/0x8e
    > Apr 8 07:40:12 test1 kernel: [<c012da25>] sys_futex+0x9f/0xce
    > Apr 8 07:40:12 test1 kernel: [<c010aa07>] syscall_call+0x7/0xb
    > Apr 8 07:40:12 test1 kernel:
    > Apr 8 07:40:12 test1 kernel: Code: 0f 0b ea 00 ea 08 2d c0 eb c5 8b 03 a9

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