From owner-freebsd-bugs@FreeBSD.ORG Thu Dec 22 15:30:12 2011 Return-Path: Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 531CF1065673 for ; Thu, 22 Dec 2011 15:30:12 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 2CCBA8FC17 for ; Thu, 22 Dec 2011 15:30:12 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.5/8.14.5) with ESMTP id pBMFUCUo071766 for ; Thu, 22 Dec 2011 15:30:12 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.5/8.14.5/Submit) id pBMFUCAx071764; Thu, 22 Dec 2011 15:30:12 GMT (envelope-from gnats) Resent-Date: Thu, 22 Dec 2011 15:30:12 GMT Resent-Message-Id: <201112221530.pBMFUCAx071764@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-bugs@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Volodymyr Kostyrko Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8ED721065672 for ; Thu, 22 Dec 2011 15:22:42 +0000 (UTC) (envelope-from nobody@FreeBSD.org) Received: from red.freebsd.org (red.freebsd.org [IPv6:2001:4f8:fff6::22]) by mx1.freebsd.org (Postfix) with ESMTP id 63F298FC0C for ; Thu, 22 Dec 2011 15:22:42 +0000 (UTC) Received: from red.freebsd.org (localhost [127.0.0.1]) by red.freebsd.org (8.14.4/8.14.4) with ESMTP id pBMFMgl7048676 for ; Thu, 22 Dec 2011 15:22:42 GMT (envelope-from nobody@red.freebsd.org) Received: (from nobody@localhost) by red.freebsd.org (8.14.4/8.14.4/Submit) id pBMFMgL5048667; Thu, 22 Dec 2011 15:22:42 GMT (envelope-from nobody) Message-Id: <201112221522.pBMFMgL5048667@red.freebsd.org> Date: Thu, 22 Dec 2011 15:22:42 GMT From: Volodymyr Kostyrko To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-3.1 Cc: Subject: kern/163540: SCHED_4BSD seems unstable on RELENG_9 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 22 Dec 2011 15:30:12 -0000 >Number: 163540 >Category: kern >Synopsis: SCHED_4BSD seems unstable on RELENG_9 >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Thu Dec 22 15:30:11 UTC 2011 >Closed-Date: >Last-Modified: >Originator: Volodymyr Kostyrko >Release: RELENG_9 >Organization: >Environment: FreeBSD green.tandem.local 9.0-PRERELEASE FreeBSD 9.0-PRERELEASE #0: Thu Dec 22 15:46:04 EET 2011 arcade@green.tandem.local:/usr/obj/usr/src/sys/MINIMAL_4BSD amd64 >Description: Recently tried to switch to SCHED_4BSD for testing purposes. After that system starts to dump core from time to time. >How-To-Repeat: Compile a kernel with SCHED_4BSD, then sysctl -a for me throws: Fatal trap 12: page fault while in kernel mode cpuid = 1; apic id = 01 fault virtual address = 0xf fault code = supervisor read data, page not present instruction pointer = 0x20:0xffffffff8038cd3f stack pointer = 0x28:0xffffff80d7e48700 frame pointer = 0x28:0xffffff80d7e48770 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 2030 (sysctl) trap number = 12 panic: page fault cpuid = 1 KDB: stack backtrace: #0 0xffffffff803b2198 at kdb_backtrace+0x58 #1 0xffffffff80381f40 at panic+0x190 #2 0xffffffff8058ee55 at trap_fatal+0x395 #3 0xffffffff8058f029 at trap_pfault+0x1c9 #4 0xffffffff8058e876 at trap+0x3a6 #5 0xffffffff80579943 at calltrap+0x8 #6 0xffffffff8038cd11 at sysctl_sysctl_next_ls+0x71 #7 0xffffffff8038cd11 at sysctl_sysctl_next_ls+0x71 #8 0xffffffff8038cd11 at sysctl_sysctl_next_ls+0x71 #9 0xffffffff8038cc43 at sysctl_sysctl_next+0x83 #10 0xffffffff8038bf41 at sysctl_root+0x211 #11 0xffffffff8038c508 at userland_sysctl+0x1d8 #12 0xffffffff8038c2f4 at sys___sysctl+0x74 #13 0xffffffff8058f505 at amd64_syscall+0x2a5 #14 0xffffffff80579c2b at Xfast_syscall+0xfb (kgdb) bt #0 sched_switch (td=Variable "td" is not available. ) at /usr/src/sys/kern/sched_4bsd.c:1021 #1 0xffffffff80389c94 in mi_switch (flags=dwarf2_read_address: Corrupted DWARF expression. ) at /usr/src/sys/kern/kern_synch.c:448 #2 0xffffffff803bc8ca in sleepq_timedwait (wchan=dwarf2_read_address: Corrupted DWARF expression. ) at /usr/src/sys/kern/subr_sleepqueue.c:652 #3 0xffffffff80389846 in _sleep (ident=Variable "ident" is not available. ) at /usr/src/sys/kern/kern_synch.c:230 #4 0xffffffff8055ed29 in scheduler (dummy=dwarf2_read_address: Corrupted DWARF expression. ) at /usr/src/sys/vm/vm_glue.c:793 #5 0xffffffff803394c3 in mi_startup () at /usr/src/sys/kern/init_main.c:258 #6 0xffffffff8025c93c in btext () #7 0xffffffff808e0aa0 in sleepq_chains () #8 0xfffffe0006b14440 in ?? () #9 0x0000000000000000 in ?? () #10 0x0000000000000000 in ?? () #11 0xffffffff81ef0bb0 in ?? () #12 0xffffffff81ef0b68 in ?? () #13 0xffffffff80929890 in bootverbose () #14 0xffffffff803a5345 in sched_switch (td=Variable "td" is not available. ) at /usr/src/sys/kern/sched_4bsd.c:1001 Current language: auto; currently minimal >Fix: >Release-Note: >Audit-Trail: >Unformatted: