Date: Fri, 16 Apr 2010 11:18:56 +0200 From: Harald Schmalzbauer <h.schmalzbauer@omnilan.de> To: freebsd-stable@freebsd.org Subject: em regression, UDP LOR followed by ssh stall Message-ID: <4BC82B80.3070108@omnilan.de>
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[-- Attachment #1 --] Hello, with RELENG_8 from 6 weeks ago I never ran into the problem that my ssh connection stalled. With today's RELENG_8 it reproducably hangs at first login. After some time I can open another ssh session which seems to stay without problems, but the first sessions is always dying a few seconds after login. here's a LOR: lock order reversal: 1st 0xffffff0001801018 em0:rx(1) (em0:rx(1)) @ /usr/src/sys/dev/e1000/if_em.c:4057 2nd 0xffffffff80938908 udp (udp) @ /usr/src/sys/netinet/udp_usrreq.c:474 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2a _witness_debugger() at _witness_debugger+0x49 witness_checkorder() at witness_checkorder+0x7ea _rw_rlock() at _rw_rlock+0x58 udp_input() at udp_input+0x1cd ip_input() at ip_input+0xb3 netisr_dispatch_src() at netisr_dispatch_src+0x9e ether_demux() at ether_demux+0x176 ether_input() at ether_input+0x176 em_rxeof() at em_rxeof+0x175 em_msix_rx() at em_msix_rx+0x22 intr_event_execute_handlers() at intr_event_execute_handlers+0x67 ithread_loop() at ithread_loop+0xae fork_exit() at fork_exit+0x12a fork_trampoline() at fork_trampoline+0xe --- trap 0, rip = 0, rsp = 0xffffff8075507d30, rbp = 0 --- FreeBSD 8.0-STABLE #0: Fri Apr 16 10:34:36 CEST 2010 admin@korso.rzhp.omnilan.net:/usr/obj/usr/src/sys/ILZ-S32 amd64 em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=399b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_UCAST,WOL_MCAST,WOL_MAGIC> ether 00:1b:21:3e:90:52 inet 10.21.0.2 netmask 0xffffff00 broadcast 10.21.0.255 media: Ethernet autoselect (1000baseT <full-duplex>) status: active em0: <Intel(R) PRO/1000 Network Connection 7.0.0> port 0x2000-0x201f mem 0xe1a80000-0xe1a9ffff,0xe1a00000-0xe1a7ffff,0xe1aa0000-0xe1aa3fff irq 16 at device 0.0 on pci1 em0: Using MSIX interrupts with 5 vectors em0: [ITHREAD] em0: [ITHREAD] em0: [ITHREAD] em0: [ITHREAD] em0: [ITHREAD] em0: Ethernet address: 00:1b:21:3e:90:52 Thanks for any help [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.13 (FreeBSD) iEYEARECAAYFAkvIK4EACgkQLDqVQ9VXb8hUNgCgxedCvxBjPY88Ft7Idu/Ixktk 7lMAoI2+tOTeEwK2OkuEhO956jCDToxX =siFp -----END PGP SIGNATURE-----
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