Date: Mon, 22 Oct 2007 01:29:46 +0300 From: "Gleb Kozyrev" <gkozyrev@gmail.com> To: current@freebsd.org Subject: Deadlock, exclusive sx so_rcv_sx, amd64 Message-ID: <ca661e8a0710211529y2a48b4a9h78da4211b3f09274@mail.gmail.com>
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Hello. Running rtorrent and ftp brings my system to a deadlock in a few hours. Kernel still responds to pings and sends some TCP acks. The kernel is from fresh RELENG_7, userland is from 'CURRENT' of 20 Aug. See <http://debug.files.googlepages.com/Serial-20071022-004528.txt>; Below are some snippets: db> show alllocks Process 1406 (systat) thread 0xffffff002aa016a0 (100181) shared sx allproc r = 0 (0xffffffff80a72820) locked @ /usr/src/sys/vm/vm_meter.c:130 exclusive sx sysctl lock r = 0 (0xffffffff80a72f40) locked @ /usr/src/sys/kern/kern_sysctl.c:1396 Process 1129 (rtorrent) thread 0xffffff000a6ae000 (100163) exclusive sx user map r = 0 (0xffffff0001056890) locked @ /usr/src/sys/vm/vm_map.c:2195 Process 1105 (sshd) thread 0xffffff000a6ae350 (100162) exclusive sx so_rcv_sx r = 0 (0xffffff000a78a928) locked @ /usr/src/sys/kern/uipc_sockbuf.c:145 Process 1040 (cron) thread 0xffffff0001c61350 (100130) shared sx proctree r = 0 (0xffffffff80a72860) locked @ /usr/src/sys/kern/kern_fork.c:286 Process 998 (mysqld) thread 0xffffff002aa119f0 (100192) exclusive sx so_rcv_sx r = 0 (0xffffff0003858670) locked @ /usr/src/sys/kern/uipc_sockbuf.c:145 Process 998 (mysqld) thread 0xffffff002aa12000 (100191) exclusive sx so_rcv_sx r = 0 (0xffffff000abbb928) locked @ /usr/src/sys/kern/uipc_sockbuf.c:145 Process 932 (smbd) thread 0xffffff000140c000 (100068) shared sx proctree r = 0 (0xffffffff80a72860) locked @ /usr/src/sys/kern/kern_fork.c:286 kernel config: ident RUN-071021 include GENERIC options INCLUDE_CONFIG_FILE nooption SMP nocpu I486_CPU nocpu I586_CPU nooption SCHED_4BSD options SCHED_ULE device crypto options IPSEC options LIBALIAS options IPFIREWALL options IPFIREWALL_VERBOSE options IPFIREWALL_FORWARD options IPFIREWALL_NAT options GEOM_JOURNAL options KDB options DDB options KDB_TRACE options ALT_BREAK_TO_DEBUGGER options INVARIANTS options INVARIANT_SUPPORT options WITNESS options WITNESS_SKIPSPIN nodevice umass device ucom device uplcom loader.conf: vfs.root.mountfrom="zfs:base/system" if_bridge_load="YES" dummynet_load="YES" ipdivert_load="YES" zfs_load="YES" accf_http_load="YES" With an older kernel it once was just db> show alllocks Process 1130 (rtorrent) thread 0xffffff000962e9f0 (100160) exclusive sx so_rcv_sx r = 0 (0xffffff000987e670) locked @ /usr/src/sys/kern/uipc_sockbuf.c:145 Process 1096 (sshd) thread 0xffffff000962a350 (100170) exclusive sx so_rcv_sx r = 0 (0xffffff00096f9100) locked @ /usr/src/sys/kern/uipc_sockbuf.c:145 Process 996 (mysqld) thread 0xffffff0031e0c000 (100191) exclusive sx so_rcv_sx r = 0 (0xffffff0009870be0) locked @ /usr/src/sys/kern/uipc_sockbuf.c:145 <http://debug.files.googlepages.com/Serial-20071021-020559.txt>; Please suggest any other commands to run in DDB if needed. Cores are saved. -- With best regards, Gleb Kozyrev.
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