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| author |   Chao Yu <yuchao0@huawei.com> | 2020-11-02 17:36:58 +0800 |
|---|---|---|
| committer |   Jaegeuk Kim <jaegeuk@kernel.org> | 2020-11-02 08:33:01 -0800 |
| commit | 7a6e59d719ef0ec9b3d765cba3ba98ee585cbde3 (patch) | |
| tree | 35614d1fb71dc7ba2a990406c5f6e62e9383d89a /fs/f2fs | |
| parent | f2fs: call f2fs_get_meta_page_retry for nat page (diff) | |
| download | linux-dev-7a6e59d719ef0ec9b3d765cba3ba98ee585cbde3.tar.xz linux-dev-7a6e59d719ef0ec9b3d765cba3ba98ee585cbde3.zip | |
f2fs: fix to seek incorrect data offset in inline data file
As kitestramuort reported:
F2FS-fs (nvme0n1p4): access invalid blkaddr:1598541474
[ 25.725898] ------------[ cut here ]------------
[ 25.725903] WARNING: CPU: 6 PID: 2018 at f2fs_is_valid_blkaddr+0x23a/0x250
[ 25.725923] Call Trace:
[ 25.725927] ? f2fs_llseek+0x204/0x620
[ 25.725929] ? ovl_copy_up_data+0x14f/0x200
[ 25.725931] ? ovl_copy_up_inode+0x174/0x1e0
[ 25.725933] ? ovl_copy_up_one+0xa22/0xdf0
[ 25.725936] ? ovl_copy_up_flags+0xa6/0xf0
[ 25.725938] ? ovl_aio_cleanup_handler+0xd0/0xd0
[ 25.725939] ? ovl_maybe_copy_up+0x86/0xa0
[ 25.725941] ? ovl_open+0x22/0x80
[ 25.725943] ? do_dentry_open+0x136/0x350
[ 25.725945] ? path_openat+0xb7e/0xf40
[ 25.725947] ? __check_sticky+0x40/0x40
[ 25.725948] ? do_filp_open+0x70/0x100
[ 25.725950] ? __check_sticky+0x40/0x40
[ 25.725951] ? __check_sticky+0x40/0x40
[ 25.725953] ? __x64_sys_openat+0x1db/0x2c0
[ 25.725955] ? do_syscall_64+0x2d/0x40
[ 25.725957] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
llseek() reports invalid block address access, the root cause is if
file has inline data, f2fs_seek_block() will access inline data regard
as block address index in inode block, which should be wrong, fix it.
Reported-by: kitestramuort <kitestramuort@autistici.org>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
| -rw-r--r-- | fs/f2fs/file.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index ee861c6d9ff0..fe39e591e5b4 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -412,9 +412,14 @@ static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) goto fail; /* handle inline data case */ - if (f2fs_has_inline_data(inode) && whence == SEEK_HOLE) { - data_ofs = isize; - goto found; + if (f2fs_has_inline_data(inode)) { + if (whence == SEEK_HOLE) { + data_ofs = isize; + goto found; + } else if (whence == SEEK_DATA) { + data_ofs = offset; + goto found; + } } pgofs = (pgoff_t)(offset >> PAGE_SHIFT); |