On Sun, Dec 03, 2006 at 09:12:08PM +0100, Arno J. Klaassen wrote: > Hello, > > > On Sat, Dec 02, 2006 at 07:15:37PM +0100, Arno J. Klaassen wrote: > > > > > > Hello, > > > > > > I just got this on a box I'm testing before installation. > > > It has clean RELENG_6 from about two weeks ago with only > > > some small if_bge.c-patches Bruce Evans sent me for testing > > > performance/hang problems. > > > Since I doubt this panic is related to that, I just post > > > it here in case someone is interested in more info : > > > > > > [sorry, no serial console attached ... just copy-paste from > > > screen, but I will leave the box in the debugger for the > > > WE ] > > > > > > struct mount mtx (struct mount mtx) @ > > > /files/bsd/src6/sys/ufs/ufs/ufs_vnops.c:138 > > > KDB: stack backtrace : > > > witness_checkorder() > > > _mtx_lock_flags() > > > ufs_itimes() > > > ufs_getattr() > > > VOP_GETATTR_APV() > > > filt_vfsread() > > > knote() > > > VOP_WRITE_APV() > > > vn_write() > > > dofilewrite() > > > kern_writev() > > > write() > > > syscall() > > > Xfast_syscall() > > > --- syscall (4, FreeBSD ELF64, write), rip = 0x4363dc, rsp = > > > 0X7fffffffdd78, rbp = 0x2f6 --- > > > KDB: enter: witness_checkorder > > > [thread pid 3987 tid 100133 ] > > > > > > Kernel config is stripped GENERIC + > > > > > > options AHC_ALLOW_MEMIO > > > options TCP_DROP_SYNFIN > > > options KDB > > > options KDB_TRACE > > > options DDB > > > options KTRACE > > > options INVARIANTS > > > options INVARIANT_SUPPORT > > > options DDB_NUMSYM > > > options BREAK_TO_DEBUGGER > > > options INVARIANTS > > > options INVARIANT_SUPPORT > > > options WITNESS > > > options WITNESS_KDB > > > options DEBUG_LOCKS > > > options DEBUG_VFS_LOCKS > > > options DIAGNOSTIC > > > options MUTEX_PROFILING > > > options MUTEX_DEBUG > > > options SLEEPQUEUE_PROFILING > > > options TURNSTILE_PROFILING > > > options DEBUG_MEMGUARD > > > > > > The box was doing (/usr/src nfs-mounted): > > > > > > nohup time make -j 2 -DNO_CLEAN buildworld > /tmp/bw_alone.log 2>&1 & > > > > > > It paniced shortly after I started 'tail -f /tmp/bw_alone.log' in another > > > window, and /tmp is mfs. > > > > Please, try the patch at > > http://people.freebsd.org/~kib/kqueue-lor.1.patch > > > > for now this prevents the LOR-panic. Thank you very much!
Thank you for testing. Do you have a procedure to reliably reproduce the LOR ?
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