Hello,
yesterday I got a kernel crash on my server (a ProLiant DL380 G5):
"panic: stack overflow detected; backtrace may be corrupted"
Kernel is "9.2-PRERELEASE FreeBSD 9.2-PRERELEASE #7 r254683"
The stack trace reads:
#0 doadump (textdump=1) at pcpu.h:249
249 pcpu.h: No such file or directory.
in pcpu.h
(kgdb) #0 doadump (textdump=1) at pcpu.h:249
#1 0xc0668a4d in kern_reboot (howto=260)
at /usr/src/sys/kern/kern_shutdown.c:449
#2 0xc0668f07 in panic (fmt=0x104 <Address 0x104 out of bounds>)
at /usr/src/sys/kern/kern_shutdown.c:637
#3 0xc0691da2 in __stack_chk_fail ()
at /usr/src/sys/kern/stack_protector.c:17
#4 0xc7fdb175 in nfsrvd_setattr (nd=0xc73b4400, isdgram=-952596480,
vp=0xc8001140, p=0xf405ecc8, exp=0xc07af7f0)
at /usr/src/sys/modules/nfsd/../../fs/nfsserver/nfs_nfsdserv.c:371
#5 0xc7fdb6e0 in nfsrvd_releaselckown (nd=0xc7442a00, isdgram=-952596480,
vp=0xc7388848, p=0xf405ecb8, exp=0x0)
at /usr/src/sys/modules/nfsd/../../fs/nfsserver/nfs_nfsdserv.c:3481
#6 0xc07af7f0 in svc_run_internal (pool=0xc7de8b80, ismaster=0)
at /usr/src/sys/rpc/svc.c:1109
#7 0xc07b006d in svc_thread_start (arg=0xc7de8b80)
at /usr/src/sys/rpc/svc.c:1200
#8 0xc06384f7 in fork_exit (callout=0xc07b0060 <svc_thread_start>,
arg=0xc7de8b80, frame=0xf405ed08) at /usr/src/sys/kern/kern_fork.c:992
#9 0xc08787c4 in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:279
I have all the files in /var/crash, so if someone wants additional informations
I should be able to deliver them.
The kernel config file is customized in the sense that I have removed kernel
items, that aren't used on that machine.
One major difference: I use
< options NFSCLIENT # Network Filesystem Client
< options NFSSERVER # Network Filesystem Server
instead of
> options NFSCL # New Network Filesystem Client
> options NFSD # New Network Filesystem Server
because a kernel a few weeks ago immediately crashed with the new NFS-code.
But it seems now, that the old NFS-code is also somehow damaged.
Ah, and I still have from older releases of FreeBSD the following
loader options - do they still make sense?
geom_vinum_load="YES"
kern.maxdsiz="734003200"
vm.pmap.shpgperproc=256
vm.pmap.pv_entry_max=3145728
'geom_vinum' is used as LVM only, no RAIDs are configured.
This server is primarily a Samba server with the SMB-shares exported as
NFS-shares as well
for the other *nix-servers around.
Because this is the most loaded production server, testing is a bit difficult,
restricted to the evening and the weekends.
On my two other FreeBSD machines I have no problems at all, one of them is an
identical ProLiant server with a nearly identical kernel config - runs like a
charm...
Has someone a good advice or further questions?
with best regards
Matthias Schündehütte
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