On Mon, Mar 05, 2007 at 06:28:30PM +0000, Gavin Atkinson wrote: > On Mon, 5 Mar 2007, Kostik Belousov wrote: > > >On Mon, Mar 05, 2007 at 12:05:32AM -0800, Peter Losher wrote: > >>We recently updated one of our dual Opteron systems (w/ 4GB RAM) from > >>5.5 to 6.2 (amd64 wipe and reinstalled) and about once a week, it panics > >>with the below message: > >> > >>-=- > >>TPTE at 0xffff8000040028a0 IS ZERO @ VA 800514000 > >>panic: bad pte > >>cpuid = 2 > >>KDB: stack backtrace: > >>panic() at 0xffffffff803fdd03 = panic+0x253 > >>pmap_remove_pages() at 0xffffffff806072a3 = pmap_remove_pages+0x283 > >>exec_new_vmspace() at 0xffffffff803e18e6 = exec_new_vmspace+0x216 > >>exec_elf64_imgact() at 0xffffffff803cbb73 = exec_elf64_imgact+0x273 > >>kern_execve() at 0xffffffff803e2107 = kern_execve+0x457 > >>execve() at 0xffffffff803e2bed = execve+0x5d > >>syscall() at 0xffffffff8060d141 = syscall+0x4d1 > >>Xfast_syscall() at 0xffffffff805f8128 = Xfast_syscall+0xa8 > >>--- syscall (59, FreeBSD ELF64, execve), rip = 0x80069838c, rsp = > >>0x7fffffffe7c8, rbp = 0x7fffffffecd0 --- > >>Uptime: 4d16h55m46s > >>-=- > >> > >>I do have a dump, and can make that available if need be. Has anyone > >>encountered this recently and can shed any light on what might be > >>causing this? > > > >Did rev. 1.516.2.9 of sys/amd64/amd64/pmap.c changed (or even fixed) the > >problem ? (This is the same patch I already sent you). > > Do you know if this patch is likely to fix the other "bad pte" panics that > have been seen (usually during process exit())? e.g. > > http://docs.freebsd.org/cgi/mid.cgi?1148482556.35287.18.camel > http://lists.freebsd.org/pipermail/freebsd-current/2004-August/034909.html Yes, the problem there seems to be fixed by Tor' commit into the i386/pmap.c at the 2006/02/16. My commit is MFi386 of the fix to the amd64.
> I have a couple of amd64 machines I'm reluctant to make live until this is > sorted... I'll cvsup in the next day or two to see, although it wasn't > consistantly reproduceable. I am interested in testing results.
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