Date: Fri, 8 Oct 2004 05:57:05 -0400 (EDT) From: Robert Watson <rwatson@FreeBSD.org> To: threads@FreeBSD.org Subject: setrunqueue: corrupt kq_runq, td=0xc2745c80 (Sept 17ish kernel) Message-ID: <Pine.NEB.3.96L.1041008054831.83658E-100000@fledge.watson.org>
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This panic occurred while I was doing a make depend over NFS. mysqld was presumably largely idle, but perhaps woke up to do some processing on a timer. This kernel is a GENERIC kernel from around September 17; I was in the process of building an updated kernel when it panicked, so it could be that this is fixed already? db> show msgbuf msgbufp = 0xc101bfe4 magic = 63062, size = 32740, r= 9434, w = 9540, ptr = 0xc1014000, cksum= 743102 setrunqueue(): corrupt kq_runq, td= 0xc2745c80 panic: deadlock in setrunqueue cpuid = 0 KDB: enter: panic Copyright (c) 1992-2004 The FreeBSD Project. Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 ... db> show pcpu cpuid = 0 curthread = 0xc67944b0: pid 565 "mysqld" curpcb = 0xef63ada0 fpcurthread = none idlethread = 0xc2260960: pid 14 "idle: cpu0" APIC ID = 0 currentldt = 0x30 spin locks held: db> trace kdb_enter(c07f0956) at kdb_enter+0x2b panic(c07f1f58,c07f1f30,c2745c80,0,c2745c80) at panic+0x127 setrunqueue(c2745c80,0) at setrunqueue+0x11c turnstile_unpend(c29494c0,c296a06c,39f,ef63ac68,c05f79e8) at turnstile_unpend+0x274 _mtx_unlock_sleep(c296a06c,0,c07ee778,39f) at _mtx_unlock_sleep+0x6c _mtx_unlock_flags(c296a06c,0,c07ee778,39f) at _mtx_unlock_flags+0x98 thread_link_mboxes(c22d7a10,c2b2e030,0,0,c22d7a10) at thread_link_mboxes+0xcf thread_userret(c67944b0,ef63ad48) at thread_userret+0x374 userret(c67944b0,ef63ad48,b7,1,b7) at userret+0x57 syscall(830002f,2f,a89002f,8304a00,0) at syscall+0x2d9 Xint0x80_syscall() at Xint0x80_syscall+0x1f --- syscall (0, FreeBSD ELF32, nosys), eip = 0x2833ad6f, esp = 0xa893f88, ebp = 0xa893fc4 --- Robert N M Watson FreeBSD Core Team, TrustedBSD Projects robert@fledge.watson.org Principal Research Scientist, McAfee Research
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