Date: Fri, 26 Sep 2008 18:21:01 +0200 From: Christian Laursen <xi@borderworlds.dk> To: freebsd-stable@freebsd.org Subject: 7.1-PRERELEASE freezes Message-ID: <ygfabdu6fpu.fsf@dominion.borderworlds.dk>
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Hello, I decided to give 7.1-PRERELEASE a try on one of my machines to find out if there might be any problems I should be aware of. I quickly ran into problems. After a while the system freezes completely. It seems to be somehow related to the load of the machine as it doesn't seem to happen when it is idle. I built a kernel with software watchdog enabled and enabled watchdog which had the nice effect of turning the freeze into a panic. Hopefully that will be of some help. I first encountered the problem using SCHED_ULE and then tried if SCHED_4BSD made any difference. But the freeze happens with either scheduler. I have disabled xorg and the nvidia driver but that doesn't help either. I can cut down on various other stuff too, but first I hope that someone here have a more educated guess about what could be the cause of the freezes. I have placed the backtraces from the most recent crashes as well as the demsg output from the most recent boot at this URL: http://borderworlds.dk/~xi/7.1-PRERELEASE.freeze.txt My kernel config is also included. As far as I can tell the two backtraces are identical and look like this: #0 doadump () at pcpu.h:196 #1 0xc05abd03 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:418 #2 0xc05abeff in panic (fmt=Variable "fmt" is not available. ) at /usr/src/sys/kern/kern_shutdown.c:572 #3 0xc0570d18 in hardclock (usermode=0, pc=3231434181) at /usr/src/sys/kern/kern_clock.c:642 #4 0xc07d194f in clkintr (frame=0xe38e1c68) at /usr/src/sys/i386/isa/clock.c:164 #5 0xc07c0465 in intr_execute_handlers (isrc=0xc0866700, frame=0xe38e1c68) at /usr/src/sys/i386/i386/intr_machdep.c:366 #6 0xc07d0fa8 in atpic_handle_intr (vector=0, frame=0xe38e1c68) at /usr/src/sys/i386/isa/atpic.c:596 #7 0xc07bbf41 in Xatpic_intr0 () at atpic_vector.s:62 #8 0xc09bc5c5 in acpi_cpu_c1 () at /usr/src/sys/modules/acpi/acpi/../../../i386/acpica/acpi_machdep.c:550 #9 0xc09b54f4 in acpi_cpu_idle () at /usr/src/sys/modules/acpi/acpi/../../../dev/acpica/acpi_cpu.c:945 #10 0xc07c35b6 in cpu_idle () at /usr/src/sys/i386/i386/machdep.c:1183 #11 0xc05c9275 in sched_idletd (dummy=0x0) at /usr/src/sys/kern/sched_4bsd.c:1429 #12 0xc05895d6 in fork_exit (callout=0xc05c9260 <sched_idletd>, arg=0x0, frame=0xe38e1d38) at /usr/src/sys/kern/kern_fork.c:804 #13 0xc07bbf10 in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:264 I can provide more information as needed. Any help will be greatly appreciated. Thanks. -- Christian Laursen
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