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On Sun, 2005-10-09 at 06:33 +0200, Ingo Molnar wrote: > * Fernando Lopez-Lezcano <nando@ccrma.Stanford.EDU> wrote: > > > This appears to be triggered from Freqtweak (a Jack application): > > Oct 8 18:48:00 cmn3 kernel: freqtweak:4705 userspace BUG: scheduling in > > user-atomic context! > > Oct 8 18:48:00 cmn3 kernel: [<c037c05b>] schedule+0xeb/0x100 (8) > > Oct 8 18:48:00 cmn3 kernel: [<c037d745>] rwsem_down_read_failed > > +0xa5/0x1c0 (28) > > Oct 8 18:48:00 cmn3 kernel: [<c01467ee>] .text.lock.futex+0xa9/0x2db > > (52) > > Oct 8 18:48:00 cmn3 kernel: [<c0130c46>] try_to_del_timer_sync > > +0x46/0x50 (32) > > Oct 8 18:48:00 cmn3 kernel: [<c0130c71>] del_timer_sync+0x21/0x30 (16) > > Oct 8 18:48:00 cmn3 kernel: [<c0121330>] default_wake_function > > +0x0/0x20 (32) > > Oct 8 18:48:00 cmn3 kernel: [<c0151b5c>] audit_syscall_exit+0x4c/0x400 > > (12) > > Oct 8 18:48:00 cmn3 kernel: [<c0146589>] do_futex+0x69/0xf0 (24) > > Oct 8 18:48:00 cmn3 kernel: [<c0146674>] sys_futex+0x64/0x120 (24) > > Oct 8 18:48:00 cmn3 kernel: [<c0103471>] syscall_call+0x7/0xb (60) > > could you enable CONFIG_DEBUG_PREEMPT and send me the same assert (which > will hopefully include a critical section list too). I will try to do that tomorrow. I forgot to mention, all this is with the SMP kernel running on a dual core Athlon, PREEMPT_DESKTOP and HZ=1000. The symptoms would seem to indicate some basic problem with timing and what is reported to userspace (ie: wrong warnings about delayed interrupts in Jack - I hear no audible problems and the time difference reported by Jack keeps growing no matter what I do, seems to only be realted to the time the kernel has been up, key repeat on X speeds up, apparently the screensaver kicks in randomly, etc). -- Fernando - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | |||||||||
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