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author | Shigeru Yoshida <syoshida@redhat.com> | 2022-08-23 19:32:05 +0900 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-01-04 11:28:55 +0100 |
commit | 2600c80ea7b39f987c3fa89287e73d62e322bbbd (patch) | |
tree | ba17f3c8fa5c16f3b269d774b65eb2e88f59a00a /fs/ntfs3 | |
parent | 1621734cd3047f7979da1d7d5c5444d583d8b0ed (diff) | |
download | linux-2600c80ea7b39f987c3fa89287e73d62e322bbbd.tar.gz |
fs/ntfs3: Fix memory leak on ntfs_fill_super() error path
[ Upstream commit 51e76a232f8c037f1d9e9922edc25b003d5f3414 ] syzbot reported kmemleak as below: BUG: memory leak unreferenced object 0xffff8880122f1540 (size 32): comm "a.out", pid 6664, jiffies 4294939771 (age 25.500s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 ed ff ed ff 00 00 00 00 ................ backtrace: [<ffffffff81b16052>] ntfs_init_fs_context+0x22/0x1c0 [<ffffffff8164aaa7>] alloc_fs_context+0x217/0x430 [<ffffffff81626dd4>] path_mount+0x704/0x1080 [<ffffffff81627e7c>] __x64_sys_mount+0x18c/0x1d0 [<ffffffff84593e14>] do_syscall_64+0x34/0xb0 [<ffffffff84600087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd This patch fixes this issue by freeing mount options on error path of ntfs_fill_super(). Reported-by: syzbot+9d67170b20e8f94351c8@syzkaller.appspotmail.com Signed-off-by: Shigeru Yoshida <syoshida@redhat.com> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'fs/ntfs3')
-rw-r--r-- | fs/ntfs3/super.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ntfs3/super.c b/fs/ntfs3/super.c index a0cea3b7526e..170682c2bf67 100644 --- a/fs/ntfs3/super.c +++ b/fs/ntfs3/super.c @@ -1281,6 +1281,7 @@ out: * Free resources here. * ntfs_fs_free will be called with fc->s_fs_info = NULL */ + put_mount_options(sbi->options); put_ntfs(sbi); sb->s_fs_info = NULL; |