Date: Wed, 05 Apr 2006 20:55:00 +0900 From: Kazuaki Oda <kaakun@highway.ne.jp> To: Robert Watson <rwatson@FreeBSD.org> Cc: freebsd-current@freebsd.org Subject: lock order reversal: tcp_input.c Message-ID: <4433B014.9040004@highway.ne.jp>
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Hi Robert, I re-cvsup'ed and rebuilt kernel again, and I got the following: lock order reversal: 1st 0xc493bb10 inp (tcpinp) @ /usr/src/sys/netinet/tcp_input.c:743 2nd 0xc09bdb8c tcp (tcp) @ /usr/src/sys/netinet/tcp_input.c:616 KDB: stack backtrace: kdb_backtrace(0,ffffffff,c097ef48,c097ef70,c0931524) at kdb_backtrace+0x29 witness_checkorder(c09bdb8c,9,c08afc89,268) at witness_checkorder+0x586 _mtx_lock_flags(c09bdb8c,0,c08afc89,268,0) at _mtx_lock_flags+0x6b tcp_input(c47f7c00,14,138,30ba8c0,0) at tcp_input+0x432 ip_input(c47f7c00) at ip_input+0x5a6 netisr_processqueue(c09bcdf8) at netisr_processqueue+0x6e swi_net(0) at swi_net+0xc2 ithread_execute_handlers(c32fd468,c333f100) at ithread_execute_handlers+0xea ithread_loop(c32c1860,d4422d38) at ithread_loop+0x67 fork_exit(c06592e4,c32c1860,d4422d38) at fork_exit+0xa4 fork_trampoline() at fork_trampoline+0x8 --- trap 0x1, eip = 0, esp = 0xd4422d6c, ebp = 0 --- Is there any other information I can provide to help you? -- Kazuaki Oda
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