From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Thu, 16 Jun 2022 12:57:05 +0000 (+0200)
Subject: 4.19-stable patches
X-Git-Tag: v5.4.200~86
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=4cd8254e1c7f0373d6b8612e2edbb7773a1534a9;p=thirdparty%2Fkernel%2Fstable-queue.git

4.19-stable patches

added patches:
	9p-missing-chunk-of-fs-9p-don-t-update-file-type-when-updating-file-attributes.patch
---

diff --git a/queue-4.19/9p-missing-chunk-of-fs-9p-don-t-update-file-type-when-updating-file-attributes.patch b/queue-4.19/9p-missing-chunk-of-fs-9p-don-t-update-file-type-when-updating-file-attributes.patch
new file mode 100644
index 00000000000..86552bada49
--- /dev/null
+++ b/queue-4.19/9p-missing-chunk-of-fs-9p-don-t-update-file-type-when-updating-file-attributes.patch
@@ -0,0 +1,41 @@
+From b577d0cd2104fdfcf0ded3707540a12be8ddd8b0 Mon Sep 17 00:00:00 2001
+From: Al Viro <viro@zeniv.linux.org.uk>
+Date: Sun, 31 Jan 2021 14:37:39 -0500
+Subject: 9p: missing chunk of "fs/9p: Don't update file type when updating file attributes"
+
+From: Al Viro <viro@zeniv.linux.org.uk>
+
+commit b577d0cd2104fdfcf0ded3707540a12be8ddd8b0 upstream.
+
+In commit 45089142b149 Aneesh had missed one (admittedly, very unlikely
+to hit) case in v9fs_stat2inode_dotl().  However, the same considerations
+apply there as well - we have no business whatsoever to change ->i_rdev
+or the file type.
+
+Cc: Tadeusz Struk <tadeusz.struk@linaro.org>
+Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ fs/9p/vfs_inode_dotl.c |   10 +++-------
+ 1 file changed, 3 insertions(+), 7 deletions(-)
+
+--- a/fs/9p/vfs_inode_dotl.c
++++ b/fs/9p/vfs_inode_dotl.c
+@@ -656,14 +656,10 @@ v9fs_stat2inode_dotl(struct p9_stat_dotl
+ 		if (stat->st_result_mask & P9_STATS_NLINK)
+ 			set_nlink(inode, stat->st_nlink);
+ 		if (stat->st_result_mask & P9_STATS_MODE) {
+-			inode->i_mode = stat->st_mode;
+-			if ((S_ISBLK(inode->i_mode)) ||
+-						(S_ISCHR(inode->i_mode)))
+-				init_special_inode(inode, inode->i_mode,
+-								inode->i_rdev);
++			mode = stat->st_mode & S_IALLUGO;
++			mode |= inode->i_mode & ~S_IALLUGO;
++			inode->i_mode = mode;
+ 		}
+-		if (stat->st_result_mask & P9_STATS_RDEV)
+-			inode->i_rdev = new_decode_dev(stat->st_rdev);
+ 		if (!(flags & V9FS_STAT2INODE_KEEP_ISIZE) &&
+ 		    stat->st_result_mask & P9_STATS_SIZE)
+ 			v9fs_i_size_write(inode, stat->st_size);