On Fri, 29 Jul 2005, Robert Watson wrote:
This sounds like a race between two threads in the TCP code, but to
diagnose it further, I'll need to know what else is running. If you
have access to serial gdb, I'd be quite interested in seeing the output
of "l *so" in the sofree() frame, *tp in a tcp-related frame, and *inp
if it's available in one of those frames, likely the in_pcbdetach()
frame or tcp_close() frame if it's there.
In the above, print *whatever rather than l *whatever, as I want structure
contents.
Thanks!
Robert N M Watson
Would it be possible to add an extra ATA disk to use for swap and capturing a
core dump?
Robert N M Watson
Google told me that
http://lists.freebsd.org/pipermail/freebsd-current/2004-December/044535.html
looks related. But the code path is different. Note that the patch in that
mail is already in 5.4.
If needed, I can provide kernel conf. I also tuned following sysctls:
vfs.hirunningspace=2097152
kern.ipc.somaxconn=4096
kern.maxfiles=30000
kern.maxfilesperproc=30000
net.inet.ip.random_id=1
machdep.hyperthreading_allowed=1
The DDB messages go here:
cpuid = 3
KDB: enter: panic
[thread pid 61 tid 100061 ]
Stopped at kdb_enter+0x2b: nop
db> wh
Tracing pid 61 tid 100061 td 0xc311e180
kdb_enter(c05f3bc6) at kdb_enter+0x2b
panic(c05f6f09,0,c33bf000,ffffff00,c3a1970c) at panic+0x127
sbflush_locked(c3a1970c,c3a19654,e74aeba4,c04e4cb4,c3a1970c) at
sbflush_locked+0x6f
sbrelease_locked(c3a1970c,c3a19654) at sbrelease_locked+0xd
sofree(c3a19654) at sofree+0x26c
in_pcbdetach(c371d870,c3e996f0,c3e996f0,e74aec9c,c05355df) at
in_pcbdetach+0xb6
tcp_close(c3e996f0,1,1,1042e,1) at tcp_close+0x16
tcp_input(c4513400,14,1c1e708c,0,0) at tcp_input+0x2297
ip_input(c4513400) at ip_input+0x4f1
netisr_processqueue(c0643298) at netisr_processqueue+0xa3
swi_net(0) at swi_net+0xf2
ithread_loop(c3094c80,e74aed48) at ithread_loop+0x159
fork_exit(c049c138,c3094c80,e74aed48) at fork_exit+0x75
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xe74aed7c, ebp = 0 ---
db> ps
61 c311ce20 0 0 0 0000204 [CPU 3] swi1: net
Regards,
Rong-En Fan
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