Date: Tue, 19 Aug 2008 23:58:43 +0200 From: Per olof Ljungmark <peo@intersonic.se> To: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: 7-STABLE lock order reversal Message-ID: <48AB4213.6030208@intersonic.se>
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7.0-STABLE #0: Tue Aug 19 20:39:48 CEST 2008 After system update from June 12 sources to Aug 12 I have seen frequent lockups during network operations. Compiled debugging kernel and got the below during boot. Should I open a PR? Suggestions welcome. Thanks. Aug 19 22:12:47 kreutzman kernel: uhid0: <Logitech G9 Laser Mouse, class 0/0, rev 2.00/50.00, addr 4> on uhub5 Aug 19 22:12:47 kreutzman kernel: lock order reversal: Aug 19 22:12:47 kreutzman kernel: 1st 0xc7077a14 rtentry (rtentry) @ /usr/src/sys/net/route.c:328 Aug 19 22:12:47 kreutzman kernel: 2nd 0xc6eee07c radix node head (radix node head) @ /usr/src/sys/net/route.c:879 Aug 19 22:12:47 kreutzman kernel: KDB: stack backtrace: Aug 19 22:12:47 kreutzman kernel: db_trace_self_wrapper(c0af8084,e71f5a4c,c07a777e,c0afa653,c6eee07c,...) at db_trace_self_wrapper+0x26 Aug 19 22:12:47 kreutzman kernel: kdb_backtrace(c0afa653,c6eee07c,c0afa6b4,c0afa6b4,c0b031c2,...) at kdb_backtrace+0x29 Aug 19 22:12:47 kreutzman kernel: witness_checkorder(c6eee07c,9,c0b031c2,36f,c6c5f2b8,...) at witness_checkorder+0x6de Aug 19 22:12:47 kreutzman kernel: _mtx_lock_flags(c6eee07c,0,c0b031c2,36f,c0af3ca5,...) at _mtx_lock_flags+0xbc Aug 19 22:12:47 kreutzman kernel: rtrequest1_fib(1,e71f5ae8,e71f5b18,0,ce,...) at rtrequest1_fib+0x82 Aug 19 22:12:47 kreutzman kernel: rtredirect_fib(e71f5bb8,e71f5ba8,0,16,e71f5b98,...) at rtredirect_fib+0x13d Aug 19 22:12:47 kreutzman kernel: in_rtredirect(e71f5bb8,e71f5ba8,0,6,e71f5b98,...) at in_rtredirect+0x34 Aug 19 22:12:47 kreutzman kernel: icmp_input(c7081d00,14,80246,c0bf53c0,e71f5c08,...) at icmp_input+0x526 Aug 19 22:12:47 kreutzman kernel: ip_input(c7081d00,14e,800,c6c89400,800,...) at ip_input+0x650 Aug 19 22:12:47 kreutzman kernel: netisr_dispatch(2,c7081d00,10,3,0,...) at netisr_dispatch+0x73 Aug 19 22:12:47 kreutzman kernel: ether_demux(c6c89400,c7081d00,3,0,3,...) at ether_demux+0x1f1 Aug 19 22:12:47 kreutzman kernel: ether_input(c6c89400,c7081d00,c0ac0c3e,c57,c6c89400,...) at ether_input+0x3d9 Aug 19 22:12:47 kreutzman kernel: bge_intr(c6c90000,0,c0af18b8,442,c6b334e8,...) at bge_intr+0x7ca Aug 19 22:12:47 kreutzman kernel: ithread_loop(c6c946d0,e71f5d38,c0af1622,305,c6c97ad0,...) at ithread_loop+0x1c5 Aug 19 22:12:47 kreutzman kernel: fork_exit(c074ce40,c6c946d0,e71f5d38) at fork_exit+0xb8 Aug 19 22:12:47 kreutzman kernel: fork_trampoline() at fork_trampoline+0x8 Aug 19 22:12:47 kreutzman kernel: --- trap 0, eip = 0, esp = 0xe71f5d70, ebp = 0 --- Aug 19 22:12:47 kreutzman kernel: Expensive timeout(9) function: 0xc068b7f0(0xc0c82f00) 0.004460343 s Aug 19 22:12:47 kreutzman savecore: no dumps found
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