From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>,
Sasha Levin <sashal@kernel.org>,
ntfs3@lists.linux.dev
Subject: [PATCH AUTOSEL 6.5 10/52] fs/ntfs3: Do not allow to change label if volume is read-only
Date: Sun, 29 Oct 2023 18:52:57 -0400 [thread overview]
Message-ID: <20231029225441.789781-10-sashal@kernel.org> (raw)
In-Reply-To: <20231029225441.789781-1-sashal@kernel.org>
From: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
[ Upstream commit e52dce610a2d53bf2b5e94a8843c71cb73a91ea5 ]
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/ntfs3/super.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/fs/ntfs3/super.c b/fs/ntfs3/super.c
index 055c3764af26e..9d84f66e6a458 100644
--- a/fs/ntfs3/super.c
+++ b/fs/ntfs3/super.c
@@ -498,7 +498,12 @@ static ssize_t ntfs3_label_write(struct file *file, const char __user *buffer,
struct super_block *sb = pde_data(file_inode(file));
struct ntfs_sb_info *sbi = sb->s_fs_info;
ssize_t ret = count;
- u8 *label = kmalloc(count, GFP_NOFS);
+ u8 *label;
+
+ if (sb_rdonly(sb))
+ return -EROFS;
+
+ label = kmalloc(count, GFP_NOFS);
if (!label)
return -ENOMEM;
--
2.42.0
next prev parent reply other threads:[~2023-10-29 22:54 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20231029225441.789781-1-sashal@kernel.org>
2023-10-29 22:52 ` [PATCH AUTOSEL 6.5 02/52] fs/ntfs3: Add ckeck in ni_update_parent() Sasha Levin
2023-10-29 22:52 ` [PATCH AUTOSEL 6.5 03/52] fs/ntfs3: Write immediately updated ntfs state Sasha Levin
2023-10-29 22:52 ` [PATCH AUTOSEL 6.5 04/52] fs/ntfs3: Use kvmalloc instead of kmalloc(... __GFP_NOWARN) Sasha Levin
2023-10-29 22:52 ` [PATCH AUTOSEL 6.5 05/52] fs/ntfs3: Add more attributes checks in mi_enum_attr() Sasha Levin
2023-10-29 22:52 ` [PATCH AUTOSEL 6.5 06/52] fs/ntfs3: fix deadlock in mark_as_free_ex Sasha Levin
2023-10-29 22:52 ` [PATCH AUTOSEL 6.5 07/52] fs/ntfs3: Fix shift-out-of-bounds in ntfs_fill_super Sasha Levin
2023-10-29 22:52 ` [PATCH AUTOSEL 6.5 08/52] fs/ntfs3: Fix alternative boot searching Sasha Levin
2023-10-29 22:52 ` [PATCH AUTOSEL 6.5 09/52] fs/ntfs3: Add more info into /proc/fs/ntfs3/<dev>/volinfo Sasha Levin
2023-10-29 22:52 ` Sasha Levin [this message]
2023-10-29 22:52 ` [PATCH AUTOSEL 6.5 11/52] fs/ntfs3: Fix possible NULL-ptr-deref in ni_readpage_cmpr() Sasha Levin
2023-10-29 22:52 ` [PATCH AUTOSEL 6.5 12/52] fs/ntfs3: Fix NULL pointer dereference on error in attr_allocate_frame() Sasha Levin
2023-10-29 22:53 ` [PATCH AUTOSEL 6.5 13/52] fs/ntfs3: Fix possible null-pointer dereference in hdr_find_e() Sasha Levin
2023-10-29 22:53 ` [PATCH AUTOSEL 6.5 14/52] fs/ntfs3: Fix directory element type detection Sasha Levin
2023-10-29 22:53 ` [PATCH AUTOSEL 6.5 15/52] fs/ntfs3: Avoid possible memory leak Sasha Levin
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