On Fri, Apr 09, 2010 at 12:09:24PM -0700, Jack Vogel wrote: > Someone else also pointed this out. I'm dubious about its claim. I can't reproduce the LOR with latest em(4)(r206429). > This happens because there is an RX lock taken in rxeof, its held > thru the call into the stack, it then encounters another lock there > and hence this complaint. I've had the RX hold as it is for a long > while and would rather not have to give it up, can someone look > at it and advise? > > Cheers, > > Jack > > > On Fri, Apr 9, 2010 at 12:00 PM, Mike Tancsa <mike_at_sentex.net> wrote: > > > While testing an i5 box with HEAD checked out from this morning, bringing > > up the second NIC generated this LOR on the console > > > > em1: link state changed to UP > > lock order reversal: > > 1st 0xc5dc7c10 em1:rx(1) (em1:rx(1)) _at_ > > /usr/HEAD/src/sys/modules/em/../../dev/e1000/if_em.c:4089 > > 2nd 0xc0f7e88c udp (udp) _at_ /usr/HEAD/src/sys/netinet/udp_usrreq.c:454 > > KDB: stack backtrace: > > db_trace_self_wrapper(c0cb4d33,c5b72a70,c08e4d65,c08d50db,c0cb7d58,...) at > > db_trace_self_wrapper+0x26 > > kdb_backtrace(c08d50db,c0cb7d58,c5d31a98,c5d2cb60,c5b72acc,...) at > > kdb_backtrace+0x29 > > _witness_debugger(c0cb7d58,c0f7e88c,c0c9cf0b,c5d2cb60,c0cd04ca,...) at > > _witness_debugger+0x25 > > witness_checkorder(c0f7e88c,1,c0cd04ca,1c6,0,...) at > > witness_checkorder+0x839 > > _rw_rlock(c0f7e88c,c0cd04ca,1c6,c5d33088,c5e8be24,...) at _rw_rlock+0x9c > > udp_input(c67faa00,14,0,c5e8bd80,c0dfa860,...) at udp_input+0x246 > > ip_input(c67faa00,c5f2f380,c5b72be8,c07463b6,c0dfa860,...) at > > ip_input+0x606 > > netisr_dispatch_src(1,0,c67faa00,c5b72c20,c0954bc1,...) at > > netisr_dispatch_src+0xcd > > netisr_dispatch(1,c67faa00,c6018c00,c6018c00,c6852800,...) at > > netisr_dispatch+0x20 > > ether_demux(c6018c00,c67faa00,3,0,3,...) at ether_demux+0x1a1 > > ether_input(c6018c00,c67faa00,c11a0e17,ff9,64,...) at ether_input+0x365 > > em_rxeof(c5e8bd80,109,c6016180,0,c5b72cc8,...) at em_rxeof+0x13c > > em_msix_rx(c5dc7c00,c5b72cc8,c088eb14,c0e133c0,c60342b8,...) at > > em_msix_rx+0x25 > > intr_event_execute_handlers(c5d807f8,c6034280,c0cacd7e,533,c60342f0,...) at > > intr_event_execute_handlers+0x125 > > ithread_loop(c603b4a0,c5b72d38,c0cacaed,343,c5d807f8,...) at > > ithread_loop+0x9f > > fork_exit(c0877800,c603b4a0,c5b72d38) at fork_exit+0xb8 > > fork_trampoline() at fork_trampoline+0x8 > > --- trap 0, eip = 0, esp = 0xc5b72d70, ebp = 0 --- > > > > 0(i5b)# uname -a > > FreeBSD i5b.sentex.ca 9.0-CURRENT FreeBSD 9.0-CURRENT #2: Fri Apr 9 > > 11:56:25 EDT 2010 mdtancsa_at_ich10.sentex.ca:/usr/HEAD/obj/usr/HEAD/src/sys/GENERIC > > i386 > > 0(i5b)# > > > > em0_at_pci0:0:25:0: class=0x020000 card=0x34ec8086 chip=0x10ef8086 > > rev=0x05 hdr=0x00 > > vendor = 'Intel Corporation' > > class = network > > subclass = ethernet > > cap 01[c8] = powerspec 2 supports D0 D3 current D0 > > cap 05[d0] = MSI supports 1 message, 64 bit enabled with 1 message > > cap 13[e0] = PCI Advanced Features: FLR TP > > em1_at_pci0:3:0:0: class=0x020000 card=0x34ec8086 chip=0x10d38086 rev=0x00 > > hdr=0x00 > > vendor = 'Intel Corporation' > > device = 'Intel 82574L Gigabit Ethernet Controller (82574L)' > > class = network > > subclass = ethernet > > cap 01[c8] = powerspec 2 supports D0 D3 current D0 > > cap 05[d0] = MSI supports 1 message, 64 bit > > cap 10[e0] = PCI-Express 1 endpoint max data 128(256) link x1(x1) > > cap 11[a0] = MSI-X supports 5 messages in map 0x1c enabled > > > > > > 0(i5b)# vmstat -i > > interrupt total rate > > irq4: uart0 6156 3 > > irq8: rtc 224879 127 > > irq21: ehci0 2662 1 > > irq23: ehci1 3674 2 > > cpu0: timer 1754210 998 > > irq256: em0 10778 6 > > irq257: em1 331 0 > > irq258: em1 4 0 > > irq260: em1 4 0 > > irq261: em1 8 0 > > irq262: ahci0 69 0 > > cpu3: timer 1753938 998 > > cpu2: timer 1753932 998 > > cpu1: timer 1753886 998 > > Total 7264531 4134 > > 0(i5b)# > > > > CPU: Intel(R) Core(TM) i5 CPU 750 _at_ 2.67GHz (2666.65-MHz 686-class > > CPU) > > Origin = "GenuineIntel" Id = 0x106e5 Family = 6 Model = 1e Stepping = > > 5 > > > > Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> > > > > Features2=0x98e3fd<SSE3,DTES64,MON,DS_CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,POPCNT> > > AMD Features=0x28100000<NX,RDTSCP,LM> > > AMD Features2=0x1<LAHF> > > TSC: P-state invariant > > real memory = 4294967296 (4096 MB) > > avail memory = 2577711104 (2458 MB) > > ACPI APIC Table: <INTEL S3420GPC> > > FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs > > > > > > > > > > -------------------------------------------------------------------- > > Mike Tancsa, tel +1 519 651 3400 > > Sentex Communications, mike_at_sentex.net > > Providing Internet since 1994 www.sentex.net > > Cambridge, Ontario Canada www.sentex.net/mike > > > >Received on Fri Apr 09 2010 - 18:13:13 UTC
This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:40:02 UTC