On Fri, 8 Jun 2007 22:43:25 +0200 Ingo Molnar (IM) wrote: IM> IM> * Bj?rn Steinbrink <[email protected]> wrote: IM> IM> > Anyway, both are bugs and should be fixed. Maybe we're even lucky and IM> > it fixes your hang. *fingers crossed* IM> IM> just to make it clear: the NMI watchdog was working perfectly fine on IM> that box (in v2.6.21 and in dozens of kernel releases before that, for IM> multiple years) before Andi's cleanup patch. So lets find that bug first IM> or revert the cleanups. IM> IM> Ingo None of the patches posted by Björn fix the kernel BUG at arch/i386/kernel/cpu/perfctr-watchdog.c:126! that occurs when doing echo 0 > /proc/sys/kernel/nmi_watchdog Call Trace: [<c010c429>] single_msr_unreserve+0xd/0x1a [<c010c668>] disable_lapic_nmi_watchdog+0x27/0x35 [<c0110ac6>] proc_nmi_enabled+0xa0/0xbd [<c018550c>] proc_sys_write+0x6f/0x8c [<c018549d>] proc_sys_write+0x0/0x8c [<c0156e5b>] vfs_write+0x8a/0x10c [<c0157317>] sys_write+0x41/0x67 [<c0103c30>] syscall_call+0x7/0xb Andi, did you have a patch for that? Cheers, - Udo
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