Date: Mon, 23 Jul 2012 21:33:46 GMT From: Takanori Watanabe <takawata@init-main.com> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/170096: Dyanamically-attached network interface will crash with VIMAGE enabled kernel Message-ID: <201207232133.q6NLXkvE025692@red.freebsd.org> Resent-Message-ID: <201207232140.q6NLe9EW077190@freefall.freebsd.org>
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>Number: 170096 >Category: kern >Synopsis: Dyanamically-attached network interface will crash with VIMAGE enabled kernel >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: Mon Jul 23 21:40:09 UTC 2012 >Closed-Date: >Last-Modified: >Originator: Takanori Watanabe >Release: FreeBSD 10.0-CURRENT >Organization: >Environment: FreeBSD konata.init-main.com 10.0-CURRENT FreeBSD 10.0-CURRENT #7 r222214:238558M: Thu Jul 19 02:07:57 JST 2012 takawata@konata.init-main.com:/sys/i386/compile/LIEUTENANT i386 >Description: In VIMAGE network stack, curvnet macro is frequently referenced. It is actually reference td_vnet member in curthread structure. Usual user thread has valid pointer in td_vnet, but kernel thread, by which some dynamic interface attached, have initialized with NULL, so kernel will crash when curvnet is referenced. >How-To-Repeat: Plug dynamic network interface, like USB wlan, bluetooth or something, and kernel will crash where VNET() is refenced, like ng_make_node_common(); (I confirmed in USB only, but it may not limited in USB if my idea is correct.) >Fix: None yet. >Release-Note: >Audit-Trail: >Unformatted:
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