Date: Sat, 19 May 2018 04:09:58 +0000 (UTC) From: Matt Macy <mmacy@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r333842 - head/sys/kern Message-ID: <201805190409.w4J49wda022083@repo.freebsd.org>
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Author: mmacy Date: Sat May 19 04:09:58 2018 New Revision: 333842 URL: https://svnweb.freebsd.org/changeset/base/333842 Log: physio: avoid uninitialized variables Modified: head/sys/kern/kern_physio.c Modified: head/sys/kern/kern_physio.c ============================================================================== --- head/sys/kern/kern_physio.c Sat May 19 04:08:11 2018 (r333841) +++ head/sys/kern/kern_physio.c Sat May 19 04:09:58 2018 (r333842) @@ -51,6 +51,8 @@ physio(struct cdev *dev, struct uio *uio, int ioflag) vm_prot_t prot; csw = dev->si_devsw; + npages = 0; + sa = NULL; /* check if character device is being destroyed */ if (csw == NULL) return (ENXIO); @@ -177,7 +179,7 @@ physio(struct cdev *dev, struct uio *uio, int ioflag) error = EFAULT; goto doerror; } - if (pbuf) { + if (pbuf && sa) { pmap_qenter((vm_offset_t)sa, pages, npages); bp->bio_data = sa + poff;
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