Date: Sun, 30 Dec 2012 20:55:37 -0600 From: Mike Karels <mike_karels@mcafee.com> To: <FreeBSD-gnats-submit@FreeBSD.org> Subject: kern/174849: bxe driver can hang kernel when reset Message-ID: <201212310255.qBV2tblh051125@mcafee.com> Resent-Message-ID: <201212310300.qBV300OJ047512@freefall.freebsd.org>
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>Number: 174849 >Category: kern >Synopsis: bxe driver can hang kernel when reset >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon Dec 31 03:00:00 UTC 2012 >Closed-Date: >Last-Modified: >Originator: Mike Karels >Release: FreeBSD 10.0-CURRENT amd64 >Organization: McAfee, Inc >Environment: System: FreeBSD freebsd-current.karels.net 10.0-CURRENT FreeBSD 10.0-CURRENT #1 r244048: Sun Dec 9 18:48:31 UTC 2012 root@snap.freebsd.org:/usr/obj/usr/src/sys/GENERIC amd64 >Description: Resetting the bxe driver can hang the kernel. Note: problem was found and fixed on a FreeBSD 8.2 derivative; the patch compiles with -current. >How-To-Repeat: ifconfig bxe0 down; ifconfig bxe0 up >Fix: --- if_bxe.c.orig 2012-12-22 19:56:36.000000000 -0600 +++ if_bxe.c 2012-12-22 20:17:12.000000000 -0600 @@ -9610,8 +9610,10 @@ __FUNCTION__, fp->index); BXE_FP_LOCK(fp); - while ((m = buf_ring_dequeue_sc(fp->br)) != NULL) + while ((m = buf_ring_dequeue_sc(fp->br)) != NULL) { m_freem(m); + fp->br = NULL; + } BXE_FP_UNLOCK(fp); } } >Release-Note: >Audit-Trail: >Unformatted:
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