Date: Fri, 7 Feb 2003 22:39:28 -0800 (PST) From: Arun Sharma <adsharma@sharma-home.net> To: FreeBSD-gnats-submit@FreeBSD.org Cc: smp@FreeBSD.org Subject: kern/48081: Enabling mutex profiling panics the kernel Message-ID: <20030208063928.9D5F13B@astra.mirabella.net>
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>Number: 48081 >Category: kern >Synopsis: Enabling mutex profiling panics the kernel >Confidential: no >Severity: non-critical >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Fri Feb 07 22:40:06 PST 2003 >Closed-Date: >Last-Modified: >Originator: Arun Sharma >Release: FreeBSD 5.0-CURRENT i386 >Organization: >Environment: System: FreeBSD astra.mirabella.net 5.0-CURRENT FreeBSD 5.0-CURRENT #0: Sat Jan 25 18:25:49 PST 2003 root@astra.mirabella.net:/usr/src/sys/i386/compile/astra i386 >Description: Enabling mutex profiling panics the kernel. >How-To-Repeat: # sysctl debug.mutex.profiling.enable=1 # sysctl debug.mutex >Fix: The problem is caused by holding the mprof_mtx and calling printf, which results in a blockable malloc(). >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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