2.6.31-stable review patch. If anyone has any objections, please let us know. ------------------ From: Steve French commit 8e6c0332d5032aef2d3bc8f41771f999112c8c66 upstream. Fixes bugzilla.kernel.org bug number 14641 Lookup called during network boot (network root filesystem for diskless workstation) has case where nd is null in lookup. This patch fixes that in cifs_lookup. (Shirish noted that 2.6.30 and 2.6.31 stable need the same check) Signed-off-by: Shirish Pargaonkar Acked-by: Jeff Layton Tested-by: Vladimir Stavrinov Signed-off-by: Steve French Signed-off-by: Greg Kroah-Hartman --- fs/cifs/dir.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/fs/cifs/dir.c +++ b/fs/cifs/dir.c @@ -648,7 +648,7 @@ cifs_lookup(struct inode *parent_dir_ino * O_EXCL: optimize away the lookup, but don't hash the dentry. Let * the VFS handle the create. */ - if (nd->flags & LOOKUP_EXCL) { + if (nd && (nd->flags & LOOKUP_EXCL)) { d_instantiate(direntry, NULL); return 0; } @@ -680,7 +680,7 @@ cifs_lookup(struct inode *parent_dir_ino * reduction in network traffic in the other paths. */ if (pTcon->unix_ext) { - if (!(nd->flags & (LOOKUP_PARENT | LOOKUP_DIRECTORY)) && + if (nd && !(nd->flags & (LOOKUP_PARENT | LOOKUP_DIRECTORY)) && (nd->flags & LOOKUP_OPEN) && !pTcon->broken_posix_open && (nd->intent.open.flags & O_CREAT)) { rc = cifs_posix_open(full_path, &newInode, -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/