Module Name: src Committed By: hannken Date: Mon Feb 13 08:39:40 UTC 2023
Modified Files: src/sys/fs/union: union_vfsops.c Log Message: When mounting a union file system set its lower mount only on success. Reported-by: syzbot+b81b69971581b4f4d...@syzkaller.appspotmail.com To generate a diff of this commit: cvs rdiff -u -r1.86 -r1.87 src/sys/fs/union/union_vfsops.c Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.
Modified files: Index: src/sys/fs/union/union_vfsops.c diff -u src/sys/fs/union/union_vfsops.c:1.86 src/sys/fs/union/union_vfsops.c:1.87 --- src/sys/fs/union/union_vfsops.c:1.86 Mon Feb 6 10:33:32 2023 +++ src/sys/fs/union/union_vfsops.c Mon Feb 13 08:39:40 2023 @@ -1,4 +1,4 @@ -/* $NetBSD: union_vfsops.c,v 1.86 2023/02/06 10:33:32 hannken Exp $ */ +/* $NetBSD: union_vfsops.c,v 1.87 2023/02/13 08:39:40 hannken Exp $ */ /* * Copyright (c) 1994 The Regents of the University of California. @@ -77,7 +77,7 @@ */ #include <sys/cdefs.h> -__KERNEL_RCSID(0, "$NetBSD: union_vfsops.c,v 1.86 2023/02/06 10:33:32 hannken Exp $"); +__KERNEL_RCSID(0, "$NetBSD: union_vfsops.c,v 1.87 2023/02/13 08:39:40 hannken Exp $"); #include <sys/param.h> #include <sys/systm.h> @@ -255,15 +255,16 @@ union_mount(struct mount *mp, const char mp->mnt_data = um; vfs_getnewfsid(mp); - error = vfs_set_lowermount(mp, um->um_uppervp->v_mount); - if (error) - goto bad; error = set_statvfs_info(path, UIO_USERSPACE, NULL, UIO_USERSPACE, mp->mnt_op->vfs_name, mp, l); if (error) goto bad; + error = vfs_set_lowermount(mp, um->um_uppervp->v_mount); + if (error) + goto bad; + switch (um->um_op) { case UNMNT_ABOVE: cp = "<above>:";