The patch below does not apply to the 4.14-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-4.14.y git checkout FETCH_HEAD git cherry-pick -x c4d13222afd8a64bf11bc7ec68645496ee8b54b9 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2023072654-smother-blurred-0b03@gregkh' --subject-prefix 'PATCH 4.14.y' HEAD^..
Possible dependencies:
c4d13222afd8 ("ext4: fix to check return value of freeze_bdev() in ext4_shutdown()")
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From c4d13222afd8a64bf11bc7ec68645496ee8b54b9 Mon Sep 17 00:00:00 2001 From: Chao Yu chao@kernel.org Date: Tue, 6 Jun 2023 15:32:03 +0800 Subject: [PATCH] ext4: fix to check return value of freeze_bdev() in ext4_shutdown()
freeze_bdev() can fail due to a lot of reasons, it needs to check its reason before later process.
Fixes: 783d94854499 ("ext4: add EXT4_IOC_GOINGDOWN ioctl") Cc: stable@kernel.org Signed-off-by: Chao Yu chao@kernel.org Link: https://lore.kernel.org/r/20230606073203.1310389-1-chao@kernel.org Signed-off-by: Theodore Ts'o tytso@mit.edu
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index f9a430152063..55be1b8a6360 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -797,6 +797,7 @@ static int ext4_shutdown(struct super_block *sb, unsigned long arg) { struct ext4_sb_info *sbi = EXT4_SB(sb); __u32 flags; + int ret;
if (!capable(CAP_SYS_ADMIN)) return -EPERM; @@ -815,7 +816,9 @@ static int ext4_shutdown(struct super_block *sb, unsigned long arg)
switch (flags) { case EXT4_GOING_FLAGS_DEFAULT: - freeze_bdev(sb->s_bdev); + ret = freeze_bdev(sb->s_bdev); + if (ret) + return ret; set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); thaw_bdev(sb->s_bdev); break;