kern/141698: [sctp] [panic] Own lock on stcb at return from input

Bruce Cran bruce at
Thu Dec 17 05:20:01 UTC 2009

>Number:         141698
>Category:       kern
>Synopsis:       [sctp] [panic] Own lock on stcb at return from input
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Dec 17 05:20:01 UTC 2009
>Originator:     Bruce Cran
>Release:        9.0-CURRENT
FreeBSD core.draftnet 9.0-CURRENT FreeBSD 9.0-CURRENT #0: Thu Dec 17 04:20:49 GMT 2009 brucec at core.draftnet:/usr/obj/usr/src/sys/GENERIC_DBG amd64
When running lots of the copies of the SCTP API tester application api_tests at once, I got the following panic:

panic: Own lock on stcb at return from input

kdb_enter() at kdb_enter+0x3d
panic() at panic+0x17b
sctp_common_input_processing() at sctp_common_input_processing+0x3ef
sctp_input_with_port() at sctp_input_with_port+0x388
ip_input() at ip_input+0xbc
swi_net() at swi_net+0x151
intr_event_execute_handler() at intr_event_execute_handler+0x66
ithread_loop() at ithread_loop+0xb2
fork_exit() at fork_exit+0x12a
fork_trampoline() at fork_trampoline+0xe
--- trap 0, rip = 0, rsp = 0xffffff800008bd30, rbp = 0 ---
Run lots of copies of the api_tests application, started with the command line:

./api_tests -r > /dev/null


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