Date: Tue, 27 Jan 2004 08:47:13 +0000 (UTC) From: Peter Losher <Peter_Losher@isc.org> To: current@freebsd.org Subject: spin lock panic in 5.2-REL Message-ID: <20040127082106.L14045@farside.isc.org>
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So, the quad-Xeon box serving half of ftp.freebsd.org was upgraded to
5.2-RELEASE Sunday night, and a couple of hours ago it broke to gdb w/ a
spin lock panic.
-=-
spin lock sched lock held by 0x8d2f7a00 for > 5 seconds
panic: spin lock held too long
cpuid = 4;
Debugger("panic")
Stopped at Debugger+0x55: xchgl %ebx,in_Debugger.0
db>
db>
db>
db> [tail-]
-=-
We had this issue after updating to 5.1-REL, one of our techs caught this
and reset the box to bring it back online, so I don't have any additional
info. I am not sure if this is a revisit of those same problems, or if
it's something new.
Here is the kernel conf for your consideration:
-=-
include GENERIC
ident ISC_DEBUG
maxusers 512
# Normal ISC goo...
options IPFIREWALL
options IPFIREWALL_VERBOSE #print information about
options IPFIREWALL_VERBOSE_LIMIT=100 #limit verbosity
options IPFIREWALL_DEFAULT_TO_ACCEPT #allow everything by
default
options IPV6FIREWALL #firewall for IPv6
options IPV6FIREWALL_VERBOSE
options IPV6FIREWALL_VERBOSE_LIMIT=100
options IPV6FIREWALL_DEFAULT_TO_ACCEPT
options IPDIVERT #divert sockets
options IPSTEALTH #support for stealth forwarding
options TCP_DROP_SYNFIN #drop TCP packets with SYN+FIN
options HZ=1000
#options NMBCLUSTERS=32768
options DUMMYNET
# Esp. for sf1
options KVA_PAGES=512
options VM_KMEM_SIZE_SCALE="4"
#options VM_KMEM_SIZE_MAX="(1024*1024*1024)"
#options VM_KMEM_SIZE_MAX="(512*1024*1024)"
#options VM_KMEM_SIZE_MAX="(768*1024*1024)"
# Debugging foo
makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols
options DDB #Enable the kernel debugger
#options INVARIANTS #Enable calls of extra sanity checking
#options WITNESS #Enable checks to detect deadlocks and cycles
#options WITNESS_SKIPSPIN #Don't run witness on spinlocks for speed
options ADAPTIVE_MUTEXES
#options ZERO_COPY_SOCKETS
-=-
Thanks in advance for any suggestions -
-Peter
--
Peter_Losher@isc.org | ISC | OpenPGP 0xE8048D08 | "The bits must flow"
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