Thanks, jeremy!
On 12/22/2011 05:07 PM, Jeremy Chadwick wrote:
On Thu, Dec 22, 2011 at 04:04:48PM -0700, Charlie Martin wrote:
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
devfs(5) has been massively worked on in RELENG_8 and newer. You should
go through the below commits and see if you can find one that references
a PR with a similar backtrace, or mentions things like devfs_lookup().
http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/fs/devfs/
Also, be aware that the above stack trace is interspersed. Ultimately
you get to clean up the output yourself. This is a long-standing
problem with FreeBSD which can be helped but only slightly/barely by
using "options PRINTF_BUFR_SIZE=256" in your kernel configuration (the
default configs have a value of 128. Do not increase the value too
high, there are concerns about it causing major issues; I can dig up the
post that says that, but I'd rather not). It *will not* solve the
problem of interspersed output entirely. There still is no fix for this
problem... :-(
What I'm referring to:
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
lookup() at 0xffffffff80384a3e = lookup+0x4ce^M
This should actually read (I think):
devfs_lookup() at 0xffffffff802a7824 = devfs_lookup+0x264^M
VOP_LOOKUP_APV() at 0xffffffff804d5995 = VOP_LOOKUP_APV+0x95^M
[24165][irq261: plx0] DEBUG (hasc_sv_rcv_cb): rcvd hrtbt ts 24051, 7/9, rc 0^M
--
Charles R. (Charlie) Martin
Senior Software Engineer
SGI logo
1900 Pike Road
Longmont, CO 80501
Phone: 303-532-0209
E-Mail: [email protected] <mailto:[email protected]>
Website: www.sgi.com <http://www.sgi.com>
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