Author: mmokhi (ports committer) Date: Fri Mar 10 10:09:44 2017 New Revision: 314996 URL: https://svnweb.freebsd.org/changeset/base/314996
Log: Fix NULL pointer dereference and panic with shm file pread/pwrite. PR: 217429 Reported by: Tim Newsham <tim.newsham@nccgroup.trust> Reviewed by: kib Approved by: dchagin MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D9844 Modified: head/sys/kern/sys_generic.c Modified: head/sys/kern/sys_generic.c ============================================================================== --- head/sys/kern/sys_generic.c Fri Mar 10 09:58:10 2017 (r314995) +++ head/sys/kern/sys_generic.c Fri Mar 10 10:09:44 2017 (r314996) @@ -334,7 +334,8 @@ kern_preadv(td, fd, auio, offset) return (error); if (!(fp->f_ops->fo_flags & DFLAG_SEEKABLE)) error = ESPIPE; - else if (offset < 0 && fp->f_vnode->v_type != VCHR) + else if (offset < 0 && + (fp->f_vnode == NULL || fp->f_vnode->v_type != VCHR)) error = EINVAL; else error = dofileread(td, fd, fp, auio, offset, FOF_OFFSET); @@ -548,7 +549,8 @@ kern_pwritev(td, fd, auio, offset) return (error); if (!(fp->f_ops->fo_flags & DFLAG_SEEKABLE)) error = ESPIPE; - else if (offset < 0 && fp->f_vnode->v_type != VCHR) + else if (offset < 0 && + (fp->f_vnode == NULL || fp->f_vnode->v_type != VCHR)) error = EINVAL; else error = dofilewrite(td, fd, fp, auio, offset, FOF_OFFSET); _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
