Mystery panic, FreeBSD 7.2-PRE

[Charlie Martin]

We've got another mystery panic in 7.2-PRE.  Upgrading is not an option; 
however, if this is familiar to anyone, backporting a patch would be.

The stack trace is:

db_trace_self_wrapper() at 0xffffffff8019120a = db_trace_self_wrapper+0x2a^M
panic() at 0xffffffff80308797 = panic+0x187^M
devfs_populate_loop() at 0xffffffff802a45c8 = devfs_populate_loop+0x548^M
devfs_populate() at 0xffffffff802a46ab = devfs_populate+0x3b^M
devfs_lookup() at 0xffffffff802a7824 = devfs_lookup+0x264^M
VOP_LOO[24165][irq261: plx0] DEBUG (hasc_sv_rcv_cb):  rcvd hrtbt ts 
24051, 7/9,
rc 0^M
KUP_APV() at 0xffffffff804d5995 = VOP_LOOKUP_APV+0x95^M
lookup() at 0xffffffff80384a3e = lookup+0x4ce^M
namei() at 0xffffffff80385768 = namei+0x2c8^M
vn_open_cred() at 0xffffffff8039b283 = vn_open_cred+0x1b3^M
kern_open() at 0xffffffff8039a4a0 = kern_open+0x110^M
syscall() at 0xffffffff804b0e3c = syscall+0x1ec^M
Xfast_syscall() at 0xffffffff80494ecb = Xfast_syscall+0xab^M
--- syscall (5, FreeBSD ELF64, open), rip = 0x800e022fc, rsp = 
0x7fffffbfa128,
rbp = 0x801002240 ---^M
KDB: enter: panic^M
-- 

Charles R. (Charlie) Martin
Senior Software Engineer
SGI logo
1900 Pike Road
Longmont, CO 80501
Phone: 303-532-0209
E-Mail: CRMartin at sgi.com <mailto:CRMartin at sgi.com>
Website: www.sgi.com <http://www.sgi.com>