Date: Fri, 23 Jul 2010 11:39:35 GMT From: Yuriy Kohut <ykohut@onapp.com> To: freebsd-gnats-submit@FreeBSD.org Subject: i386/148862: page fault while in kernel mode at _mtx_lock_sleep Message-ID: <201007231139.o6NBdZS9074546@www.freebsd.org> Resent-Message-ID: <201007231140.o6NBe5ON082376@freefall.freebsd.org>
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>Number: 148862 >Category: i386 >Synopsis: page fault while in kernel mode at _mtx_lock_sleep >Confidential: no >Severity: critical >Priority: low >Responsible: freebsd-i386 >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Fri Jul 23 11:40:05 UTC 2010 >Closed-Date: >Last-Modified: >Originator: Yuriy Kohut >Release: FreeBSD 8.0-RELEASE-p4 (XEN) >Organization: UK2, OnApp >Environment: FreeBSD freebsd.tst 8.0-RELEASE-p4 FreeBSD 8.0-RELEASE-p4 #1: Tue Jul 20 15:40:53 EEST 2010 root@freebsd.vm:/mnt/usr/src/sys/XEN i386 >Description: Fatal trap 12: page fault while in kernel mode cpuid = 0; apic id = 00 fault virtual address = 0x206e6700 fault code = supervisor read, page not present instruction pointer = 0x21:0xc00c954d stack pointer = 0x29:0xc3cbc9d0 frame pointer = 0x29:0xc3cbc9ec code segment = base 0x0, limit 0xf9800, type 0x1b = DPL 1, pres 1, def32 1, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 12 (swi4: clock) [thread pid 12 tid 100005 ] Stopped at _mtx_lock_sleep+0x6d: movl 0x1a0(%ecx),%eax db> where Tracing pid 12 tid 100005 td 0xc3eed6c0 _mtx_lock_sleep(c07b2808,c3eed6c0,0,c03678d3,33e,...) at _mtx_lock_sleep+0x6d _mtx_lock_flags(c07b2808,0,c03678d3,33e,c6d50d00,...) at _mtx_lock_flags+0xd1 netisr_clearqdrops(c3cbca48,2,42,0) at netisr_clearqdrops+0x66e netisr_queue_src(1,0,c6d50d00,c3cbca8c,c01817ce,...) at netisr_queue_src+0xa7 netisr_queue(1,c6d50d00,df,0,c3cbcaa0,...) at netisr_queue+0x20 if_simloop(c3ece400,c6d50d00,2,0,c019df3f,...) at if_simloop+0xfe looutput(c3ece400,c6d50d00,c3cbcb20,c3cbcb18,c00c71a8,...) at looutput+0x141 ip_output(c6d50d00,0,0,0,0,...) at ip_output+0x9cc tcp_output(c6d56c58,c036e08b,b5,c6d56eb0,c03cd320,...) at tcp_output+0x1540 tcp_timer_delack(c6d56c58,0,c035a3de,176,c03cd354,...) at tcp_timer_delack+0xe5 softclock(c03cd320,c3cbccc8,c00c8fb4,c03d1040,c3ee8cb8,...) at softclock+0x24a intr_event_execute_handlers(c3eeb7f8,c3ee8c80,c03547f6,4fc,c3ee8cf0,...) at intr_event_execute_handlers+0x125 intr_event_add_handler(c3eea050,c3cbcd38,c0354565,343,c3eeb7f8,...) at intr_event_add_handler+0x41f fork_exit(c00b2750,c3eea050,c3cbcd38) at fork_exit+0xb8 fork_trampoline() at fork_trampoline+0x8 --- trap 0, eip = 0, esp = 0xc3cbcd70, ebp = 0 --- >How-To-Repeat: FreeBSD 8.0 i386 is running as Xen (version 3.0, arch x86_64) guest (DomU). Install nginx, php5, mysql, and phpmyadmin from ports. On the other box run siege-2.70 http stress test tool. >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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