Date: Mon, 12 Dec 2016 15:22:22 +0000 (UTC) From: Edward Tomasz Napierala <trasz@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r309891 - head/sys/kern Message-ID: <201612121522.uBCFMMmm088698@repo.freebsd.org>
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Author: trasz Date: Mon Dec 12 15:22:21 2016 New Revision: 309891 URL: https://svnweb.freebsd.org/changeset/base/309891 Log: Avoid dereferencing NULL pointers in devtoname(). I've seen it panic, called from ufs_print() in DDB. MFC after: 1 month Modified: head/sys/kern/kern_conf.c Modified: head/sys/kern/kern_conf.c ============================================================================== --- head/sys/kern/kern_conf.c Mon Dec 12 15:17:56 2016 (r309890) +++ head/sys/kern/kern_conf.c Mon Dec 12 15:22:21 2016 (r309891) @@ -1230,6 +1230,9 @@ const char * devtoname(struct cdev *dev) { + if (dev == NULL) + return (NULL); + return (dev->si_name); }
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