On Fri, 8 Jun 2007 13:57:27 -0700 Andrew Morton (AM) wrote: AM> On Fri, 8 Jun 2007 22:49:11 +0200 AM> "Udo A. Steinberg" <[EMAIL PROTECTED]> wrote: AM> AM> > On Fri, 8 Jun 2007 22:43:25 +0200 Ingo Molnar (IM) wrote: AM> > AM> > IM> AM> > IM> * Bj?rn Steinbrink <[EMAIL PROTECTED]> wrote: AM> > IM> AM> > IM> > Anyway, both are bugs and should be fixed. Maybe we're even lucky AM> > IM> > and it fixes your hang. *fingers crossed* AM> > IM> AM> > IM> just to make it clear: the NMI watchdog was working perfectly fine on AM> > IM> that box (in v2.6.21 and in dozens of kernel releases before that, AM> > IM> for multiple years) before Andi's cleanup patch. So lets find that AM> > IM> bug first or revert the cleanups. AM> > IM> AM> > IM> Ingo AM> > AM> > None of the patches posted by Bj__rn fix the kernel BUG at AM> > arch/i386/kernel/cpu/perfctr-watchdog.c:126! that occurs when doing AM> > echo 0 > /proc/sys/kernel/nmi_watchdog AM> > AM> > Call Trace: AM> > [<c010c429>] single_msr_unreserve+0xd/0x1a AM> > [<c010c668>] disable_lapic_nmi_watchdog+0x27/0x35 AM> > [<c0110ac6>] proc_nmi_enabled+0xa0/0xbd AM> > [<c018550c>] proc_sys_write+0x6f/0x8c AM> > [<c018549d>] proc_sys_write+0x0/0x8c AM> > [<c0156e5b>] vfs_write+0x8a/0x10c AM> > [<c0157317>] sys_write+0x41/0x67 AM> > [<c0103c30>] syscall_call+0x7/0xb AM> > AM> > Andi, did you have a patch for that? AM> > AM> AM> This? AM> AM> AM> From: Bjorn Steinbrink <[EMAIL PROTECTED]> AM> AM> Fix oops triggered during: echo 0 > /proc/sys/kernel/nmi_watchdog AM> AM> The culprit seems to be 09198e68501a7e34737cd9264d266f42429abcdc:
This alone does not help, but in combination with the other two patches
the problem no longer occurs.
Thanks,
- Udo
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