Date: Mon, 17 Jan 2011 18:44:57 +0300 From: Sergey Kandaurov <pluknet@gmail.com> To: Garrett Cooper <yanefbsd@gmail.com> Cc: FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: Known LoR when taking bringing up bge(4) after system in multiuser? Message-ID: <AANLkTik0CR75c-=PWA3RmYP1nxZRJKd7H0B3_Lsn3o1m@mail.gmail.com> In-Reply-To: <7d6fde3d1002191625m4d0d160dq2dc24f124aa38d0e@mail.gmail.com> References: <7d6fde3d1002191625m4d0d160dq2dc24f124aa38d0e@mail.gmail.com>
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On 20 February 2010 03:25, Garrett Cooper <yanefbsd@gmail.com> wrote: > Hi, > =A0 =A0I came across the following LoR: > > lock order reversal: > =A01st 0xc56aae04 if_afdata (if_afdata) @ > /usr/home/garrcoop/ipcvs/freebsd/src/sys/net/if_llatbl.c:130 > =A02nd 0xc58a1d80 radix node head (radix node head) @ > /usr/home/garrcoop/ipcvs/freebsd/src/sys/net/route.c:360 > KDB: stack backtrace: > db_trace_self_wrapper(c0c6993e,c5264828,c08b173f,c08a2f35,c0c6c9d1,...) > at db_trace_self_wrapper+0x26 > kdb_backtrace(c08a2f35,c0c6c9d1,c5530758,c552b680,c5264884,...) at > kdb_backtrace+0x29 > _witness_debugger(c0c6c9d1,c58a1d80,c0c6cacb,c552b680,c0c77940,...) at > _witness_debugger+0x1e > witness_checkorder(c58a1d80,1,c0c77940,168,0,...) at witness_checkorder+0= x818 > _rw_rlock(c58a1d80,c0c77940,168,c568d2e4,1,...) at _rw_rlock+0x9c > rtalloc1_fib(c5264a60,0,0,0,c526493c,...) at rtalloc1_fib+0x82 > rtalloc1(c5264a60,0,0,1,0,...) at rtalloc1+0x27 > in_lltable_rtcheck(c56aac00,a000,c5264a60,576,c0c7691c,...) at > in_lltable_rtcheck+0x3e > in_lltable_lookup(c58a1b00,a000,c5264a60,c0913e33,52098000,...) at > in_lltable_lookup+0xc3 > llentry_update(c52649f0,c58a1b00,c5264a60,c56aac00,c552c4b8,...) at > llentry_update+0xa3 > flowtable_lookup(c5739400,c5b27700,c5264a58,0,3,...) at flowtable_lookup+= 0x437 > ip_output(c5b27700,0,0,0,0,...) at ip_output+0xf8 > icmp_reflect(1,10,0,c552c6c0,c552bf70,...) at icmp_reflect+0x5cc > icmp_input(c5b27700,14,c568d240,c0dafc80,c568d240,...) at icmp_input+0x3f= 0 > ip_input(c5b27700,c5264bcc,c07235f4,c0dafc80,0,...) at ip_input+0x619 > netisr_dispatch_src(1,0,c5b27700,c5264c04,c091c349,...) at > netisr_dispatch_src+0xcb > netisr_dispatch(1,c5b27700,c56aac00,c56aac00,c5b74002,...) at > netisr_dispatch+0x20 > ether_demux(c56aac00,c5b27700,3,0,3) at ether_demux+0x193 > ether_input(c56aac00,c5b27700,c0c250e6,d41,c56b7008,...) at ether_input+0= x355 > bge_rxeof(c56b7008,0,c0c250e6,e13,c56b7008,...) at bge_rxeof+0x2b9 > bge_intr(c56b7000,c5264cc8,c085f65d,c0dc8880,c5576a38,...) at bge_intr+0x= 107 > intr_event_execute_handlers(c55717f8,c5576a00,c0c61560,533,c5576a70,...) > at intr_event_execute_handlers+0x10f > ithread_loop(c56b26c0,c5264d38,c0c612a1,343,c55717f8,...) at ithread_loop= +0x98 > fork_exit(c084923c,c56b26c0,c5264d38) at fork_exit+0xb8 > fork_trampoline() at fork_trampoline+0x8 > --- trap 0, eip =3D 0, esp =3D 0xc5264d70, ebp =3D 0 --- > > =A0 =A0when I did the following steps [once]: > > echo "ifconfig_bge0=3D\"DHCP\"" >> /etc/rc.conf > /etc/rc.d/netif start > > =A0 =A0using srcs from cvs pulled in the last 2 days or so... > =A0 =A0I'll gladly provide more details when requested. I faced a similar LOR when running ping. Looks like it's not bge related, but comes from arpv2 and/or flowtable. # ping 8.8.8.8 loPING 8.8.8.8 (8.ck8.8.8): 56 data obytes rder reversal: 1st 0xfffffe00184413c0 if_afdata (if_afdata) @ /usr/src/sys/net/if_llatbl.= c:151 2nd 0xfffffe0018ee32f8 radix node head (radix node head) @ /usr/src/sys/net/route.c:362 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2a kdb_backtrace() at kdb_backtrace+0x37 _witness_debugger() at _witness_debugger+0x2e witness_checkorder() at witness_checkorder+0x807 _rw_rlock() at _rw_rlock+0x6d rtalloc1_fib() at rtalloc1_fib+0x10b in_lltable_rtcheck() at in_lltable_rtcheck+0x35 in_lltable_lookup() at in_lltable_lookup+0xbb llentry_update() at llentry_update+0x19e flowtable_lookup() at flowtable_lookup+0x6f6 flowtable_lookup_mbuf() at flowtable_lookup_mbuf+0x3c6 ip_output() at ip_output+0xa9c rip_output() at rip_output+0x246 sosend_generic() at sosend_generic+0x347 kern_sendit() at kern_sendit+0x1b5 sendit() at sendit+0xdc sendto() at sendto+0x4d syscallenter() at syscallenter+0x1aa syscall() at syscall+0x4c Xfast_syscall() at Xfast_syscall+0xe2 --- syscall (133, FreeBSD ELF64, sendto), rip =3D 0x80095334c, rsp =3D 0x7ffffffed608, rbp =3D 0x40 --- 64 bytes from 8.8.8.8: icmp_seq=3D0 ttl=3D56 time=3D1332.205 ms 64 bytes from 8.8.8.8: icmp_seq=3D0 ttl=3D56 time=3D1332.274 ms (DUP!)
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