Re: tree may not be buildable for an hour.

On Mon, Jan 24, 2005 at 05:56:48AM -0500, Jeff Roberson wrote:
> That's all of it.  If you wait for your cvsup mirror to catch up, you can
> try running with a smpsafe vfs by setting the debug.mpsafevfs tunable.
> This option requires mpsafevm as well.  I have two known bugs that have
> only been triggered by peter holm's excellent stress suite, but none are
> known to cause problems if mpsafevfs is disabled, and none of them have
> been seen on normal systems to my knowledge.

Another one with your latest sources and mpsafevfs=1:

panic(c06f077a,0,c06f0690,ee,c977bb80) at panic+0xd6
lockmgr(de75eed8,90022,ca369450,c977bb80,12b) at lockmgr+0x3cd
getdirtybuf(de75ee78,ca369450,1,1298,2) at getdirtybuf+0xf0
softdep_sync_metadata(f1546800,0,c07044ab,10d,1) at softdep_sync_metadata+0x11e
ffs_fsync(f1546800,ca53d834,10880,f154695c,c062bd0b) at ffs_fsync+0x397
VOP_FSYNC_AP(f1546800,1ff,0,200,c675ec80) at VOP_FSYNC_AP+0x76
ffs_truncate(ca369450,200,0,880,c675ec80) at ffs_truncate+0xa67
ufs_direnter(ca369450,0,f1546a84,f1546c48,0) at ufs_direnter+0x91b
ufs_rename(f1546be0,ca06d8a0,c977bb80,f1546ccc,c058cfe4) at ufs_rename+0x72c
VOP_RENAME_AP(f1546be0,f1546bdc,101,1,0) at VOP_RENAME_AP+0x76
kern_rename(c977bb80,808c060,bfbfb2a0,0,f1546d40) at kern_rename+0x2fe
rename(c977bb80,f1546d14,8,3ff,2) at rename+0x29
syscall(809002f,bfbf002f,bfbe002f,808c060,bfbfb2a0) at syscall+0x271
Xint0x80_syscall() at Xint0x80_syscall+0x1f
--- syscall (128, FreeBSD ELF32, rename), eip = 0x281f72d7, esp = 0xbfbea62c, ebp = 0xbfbfbab8 ---

The panic string was lost (cascading panics as usual), but:

db> x/s 0xc06f24de
0xc06f24de:     panic: %s\012
db> x/s 0xc06f0690
0xc06f0690:     ../../../kern/kern_lock.c

kern_lock.c:238 is the following in lockmgr():

1.45         (alfred   20-Apr-01):      if (flags & LK_INTERLOCK) {
1.46         (alfred   28-Apr-01):              mtx_assert(interlkp, MA_OWNED | MA_NOTRECURSED);
1.41         (bmilekic 09-Feb-01):              mtx_unlock(interlkp);

Unfortunately:

db> show lockedvnods
Locked vnodes
panic: Assertion td->td_turnstile != NULL failed at ../../../kern/subr_turnstile.c:544
cpuid = 0
panic: sched_bind: cannot bind non-running thread
cpuid = 0
panic: sched_bind: cannot bind non-running thread
cpuid = 0
[...]

Kris