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    SubjectRe: 2.6.24-rc8-mm1: old sparc64 bug
    Date
    Hello,

    > > I was digging through the gentoo bugzilla and found this:
    > >
    > > http://bugs.gentoo.org/show_bug.cgi?id=141823
    > >
    > > As you see this bug is present since at least 2.6.17. I can reproduce
    > > that here on my hardware with 2.6.24-rc8-mm1. All you need to do is install
    > > mp3blaster on sparc64, run:
    > >
    > > $ mp3blaster some_mp3_file.mp3
    > >
    > > and stop it by pressing ctrl-c. It oopses when you stop it. It doesn't happen
    > > every time but it'll oops in a few tries.
    >
    > This looks similar like a bug I fixed ago. Damn, it's still there.
    >
    > Could you build with CONFIG_SND_DEBUG=y ? It addas some sanity checks
    > and might catch the fatal condition.

    Done. I don't think it changed much though :-/ If you have any other ideas please
    let me know.

    Unable to handle kernel paging request at virtual address 0000000100024000
    tsk->{mm,active_mm}->context = 0000000000000dac
    tsk->{mm,active_mm}->pgd = fffff800bdb64000
    \|/ ____ \|/
    "@'/ .. \`@"
    /_| \__/ |_\
    \__U_/
    mp3blaster(3201): Oops [#1]
    TSTATE: 0000000080009600 TPC: 000000000056a294 TNPC: 000000000056a298 Y: 00000000 Not tainted
    TPC: <memcpy+0x11c/0x13c0>
    g0: 0000000000795b00 g1: 0000000100025ec0 g2: 0000000000000000 g3: 0000000000000038
    g4: fffff800bf58a5a0 g5: fffff8007f988000 g6: fffff800bc91c000 g7: 0000000000001ec0
    o0: fffff800bdeb2080 o1: 0000000100024000 o2: 0000000000000008 o3: fffff801bdeb6080
    o4: fffff800bdeb2080 o5: 0000000000000000 sp: fffff800bc91eb21 ret_pc: 000000000056c228
    RPC: <memcpy_user_stub+0x14/0x24>
    l0: fffff800bc91f468 l1: fffff800bc91f370 l2: 0000000000755000 l3: fffff800bde7dfa0
    l4: fffff800bde7c001 l5: 0000000000000001 l6: fffff800bc818000 l7: 0000000000446600
    i0: fffff800bdeb2080 i1: 0000000100024000 i2: 0000000000001f00 i3: 00000000100575b8
    i4: 00000000000007c0 i5: fffff800bdeb0000 i6: fffff800bc91ebe1 i7: 0000000010054a30
    I7: <snd_pcm_lib_write_transfer+0xb8/0x120 [snd_pcm]>
    Caller[0000000010054a30]: snd_pcm_lib_write_transfer+0xb8/0x120 [snd_pcm]
    Caller[000000001005215c]: snd_pcm_lib_write1+0x164/0x2e0 [snd_pcm]
    Caller[0000000010074cc4]: snd_pcm_oss_sync+0x28c/0x2c0 [snd_pcm_oss]
    Caller[0000000010075b64]: snd_pcm_oss_release+0x8c/0xe0 [snd_pcm_oss]
    Caller[00000000004c8eb0]: __fput+0xb8/0x1e0
    Caller[00000000004c5e58]: filp_close+0x60/0x80
    Caller[00000000004723d4]: put_files_struct+0xfc/0x120
    Caller[0000000000473a98]: do_exit+0x160/0x840
    Caller[00000000004741ac]: do_group_exit+0x34/0xc0
    Caller[000000000047db0c]: get_signal_to_deliver+0x274/0x300
    Caller[0000000000449f64]: do_signal32+0x2c/0x1240
    Caller[0000000000434758]: do_notify_resume+0x1c0/0x5a0
    Caller[0000000000404afc]: __handle_signal+0x18/0x54
    Caller[00000000f7bd0fcc]: 0xf7bd0fd4
    Instruction DUMP: 94228007 82004007 94a28003 <c19a5e00> 92026040 82004003 e19a5e00 92026040 8e21e080
    Fixing recursive fault but reboot is needed!

    Thanks,

    Mariusz


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