I'm running FreeBSD 7.1-RELEASE and have application that spawnes some children and (heavily) communicates between them using pipes. But under load parent and one child both get stuck in unp_mtx state, they can't be killed (killing them puts whole system on hang). This is reproducable (i've written client emulation that causes this situation after ~5 min run). Everything else keeps running, but trying to access these stuck porcesses puts whole system on hang, so i have to perform reboot. Panic is not invoked, so i've set up ddb panic autocollecting script and had manually put system into panic.
Is this a known issue in 7.1, so upgrade to 7.2 would help? I list below some info about system+ddb output: begom% uname -a FreeBSD begom.com 7.1-RELEASE FreeBSD 7.1-RELEASE #1: Mon Sep 14 07:37:56 MSD 2009 infe...@begom.com:/usr/obj/usr/src/release-7.1/sys/BEGOM i386 db:0:kdb.enter.panic> show pcpu cpuid = 1 curthread = 0x84d00d20: pid 1 "init" curpcb = 0xa940bd90 fpcurthread = none idlethread = 0x84d00af0: pid 11 "idle: cpu1" APIC ID = 1 currentldt = 0x50 db:0:kdb.enter.panic> show allpcpu Current CPU: 1 cpuid = 0 curthread = 0x850e08c0: pid 1078 "mysqld" curpcb = 0xae5d4d90 fpcurthread = none idlethread = 0x84d008c0: pid 12 "idle: cpu0" APIC ID = 0 currentldt = 0x50 cpuid = 1 curthread = 0x84d00d20: pid 1 "init" curpcb = 0xa940bd90 fpcurthread = none idlethread = 0x84d00af0: pid 11 "idle: cpu1" APIC ID = 1 currentldt = 0x50 db:0:kdb.enter.panic> ps pid ppid pgrp uid state wmesg wchan cmd ... 89782 89764 89764 1013 L *unp_mtx 0x850b9b40 perl5.8.8 89764 1 89764 1013 Ls *unp_mtx 0x856a70f0 perl5.8.8 db:0:kdb.enter.panic> alltrace ... Tracing command perl5.8.8 pid 89764 tid 100434 td 0x85672690 sched_switch(85672690,0,1,23f76982,201f8b,...) at sched_switch+0x43b mi_switch(1,0,80831849,2d9,85bf2000,...) at mi_switch+0x146 turnstile_wait(856a70f0,85bf2000,0,8675d690,87087690,...) at turnstile_wait+0x2ec _mtx_lock_sleep(8675d720,85672690,0,0,0,...) at _mtx_lock_sleep+0x10e uipc_peeraddr(8bb431a0,ae6cac70,85672690,ae6cac80,86b74b94,...) at uipc_peeraddr+0xc5 kern_getpeername(85672690,11,ae6cac70,ae6cac6c,100,...) at kern_getpeername+0x60 getpeername(85672690,ae6cacfc,c,16,ae6cad2c,...) at getpeername+0x52 syscall(ae6cad38) at syscall+0x335 Xint0x80_syscall() at Xint0x80_syscall+0x20 --- syscall (31, FreeBSD ELF32, getpeername), eip = 0x282b88db, esp = 0x7fbfeb5c, ebp = 0x7fbfeba8 --- Tracing command perl5.8.8 pid 89782 tid 100248 td 0x85bf2000 sched_switch(85bf2000,0,1,23f73c9c,201f8b,...) at sched_switch+0x43b mi_switch(1,0,80831849,2d9,805d7233,...) at mi_switch+0x146 turnstile_wait(850b9b40,85672690,0,87087690,8675d690,...) at turnstile_wait+0x2ec _mtx_lock_sleep(87087720,85bf2000,0,0,0,...) at _mtx_lock_sleep+0x10e uipc_peeraddr(8f1a8d00,ae3f4c70,ae3f4c44,4aded50c,84ff5da8,...) at uipc_peeraddr+0xc5 kern_getpeername(85bf2000,6,ae3f4c70,ae3f4c6c,100,...) at kern_getpeername+0x60 getpeername(85bf2000,ae3f4cfc,c,16,ae3f4d2c,...) at getpeername+0x52 syscall(ae3f4d38) at syscall+0x335 Xint0x80_syscall() at Xint0x80_syscall+0x20 --- syscall (31, FreeBSD ELF32, getpeername), eip = 0x282b88db, esp = 0x7fbfeb5c, ebp = 0x7fbfeba8 --- db:0:kdb.enter.panic> show locks No such command db:0:kdb.enter.panic> show alllocks No such command db:0:kdb.enter.panic> show lockedvnods Locked vnodes options CONFIG_AUTOGENERATED ident BEGOM machine i386 cpu I686_CPU makeoptions DEBUG=-g options ATA_STATIC_ID options SMP options AUDIT options STOP_NMI options ADAPTIVE_GIANT options KBD_INSTALL_CDEV options _KPOSIX_PRIORITY_SCHEDULING options SYSVSEM options SYSVMSG options SYSVSHM options KTRACE options SCSI_DELAY=5000 options COMPAT_FREEBSD6 options COMPAT_FREEBSD5 options COMPAT_FREEBSD4 options COMPAT_43TTY options GEOM_LABEL options GEOM_PART_GPT options PSEUDOFS options PROCFS options CD9660 options MD_ROOT options UFS_GJOURNAL options UFS_DIRHASH options UFS_ACL options SOFTUPDATES options FFS options INET options PREEMPTION options SCHED_ULE options KVA_PAGES=512 options DEVICE_POLLING options IPFIREWALL_DEFAULT_TO_ACCEPT options IPFIREWALL options INCLUDE_CONFIG_FILE options ALT_BREAK_TO_DEBUGGER options KDB_UNATTENDED options DDB options KDB options KSE options GEOM_MBR options GEOM_BSD options ISAPNP Loaded kernel modules are: linux, acpi, aio (but i've seen this both with and without aio). (part from fstat) game perl5.8.8 89764 root / 2 drwxr-xr-x 512 r game perl5.8.8 89764 wd /home 15191040 drwxr-x--x 3072 r game perl5.8.8 89764 text /usr 615835 -rwxr-xr-x 29935 r game perl5.8.8 89764 0 /dev 117 crw--w---- ttyp1 rw game perl5.8.8 89764 1 /dev 117 crw--w---- ttyp1 rw game perl5.8.8 89764 2 /dev 117 crw--w---- ttyp1 rw game perl5.8.8 89764 3* local dgram 86a8e3f0 <-> 852dc0a8 game perl5.8.8 89764 4 /var 329768 -rw-r--r-- 6 rw game perl5.8.8 89764 5 /usr 733593 -r--r--r-- 6611 r game perl5.8.8 89764 7* local stream 8678cc78 <-> 8579bc78 game perl5.8.8 89764 8* local stream 8579b000 <-> 8579bbd0 game perl5.8.8 89764 9* local stream 8678c000 <-> 86e07150 game perl5.8.8 89764 10* local stream 86e07888 <-> 86e07d20 game perl5.8.8 89764 11* local stream 865ca0a8 <-> 875d5a80 game perl5.8.8 89764 12* local stream 8678c0a8 <-> 865ca738 game perl5.8.8 89764 13* local stream 8736b540 <-> 8678c690 game perl5.8.8 89764 14* local stream 8579bdc8 <-> 8736bbd0 game perl5.8.8 89764 15* local stream 85a5a498 <-> 875d5498 game perl5.8.8 89764 16* local stream 85c2a3f0 <-> 85c2a348 game perl5.8.8 89764 17* local stream 87087690 <-> 8675d690 game perl5.8.8 89764 18* local stream 85a5a888 <-> 865ca2a0 game perl5.8.8 89764 19* local stream 852c79d8 <-> 8528e3f0 game perl5.8.8 89764 20* internet stream tcp 8d7d9570 game perl5.8.8 89764 21* internet stream tcp 85e021d0 game perl5.8.8 89764 22* internet stream tcp 899f71d0 game perl5.8.8 89764 23* internet stream tcp 8e8bd1d0 game perl5.8.8 89764 24* internet stream tcp 8c137000 game perl5.8.8 89764 25* internet stream tcp 8d39b3a0 game perl5.8.8 89764 26* internet stream tcp 85bc0000 game perl5.8.8 89764 27* internet stream tcp 8c78e570 game perl5.8.8 89764 28* internet stream tcp 8a7fa910 game perl5.8.8 89764 29* internet stream tcp 8dd6bcb0 game perl5.8.8 89764 30* internet stream tcp 8e801570 game perl5.8.8 89764 31* internet stream tcp 86635cb0 game perl5.8.8 89764 32* internet stream tcp 8cd50740 game perl5.8.8 89764 33* internet stream tcp 86656000 _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
