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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-02-11 11:25:11 -0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-02-11 17:04:51 -0800 |
| commit | f1a3b98e73a9f811ab4882669043c50c0e0dc7b6 (patch) | |
| tree | 74c23b5caad0291e31676a7ee8b4cea4cda36f3c | |
| parent | 60a3b782b1aaf6e5f8c4f92e99302c48a26d475b (diff) | |
| download | op-kernel-dev-f1a3b98e73a9f811ab4882669043c50c0e0dc7b6.zip op-kernel-dev-f1a3b98e73a9f811ab4882669043c50c0e0dc7b6.tar.gz | |
f2fs: fix accessing wrong indexed data blocks
This patch fixes the following test.
This causes:
attempt to access beyond end of device
sdb2: rw=16384, want=14413962000, limit=16777216
The reason is:
- f2fs_write_begin
- f2fs_convert_inline_inode returns -ENOSPC
- f2fs_write_failed
- truncate_blocks
- truncate_partial_data_page
- find_data_page
- get_dnode_of_data returns wrong data index retrieved from inline_data
- f2fs_submit_page_bio(wrong data index)
- submit_bio(wrong data index)
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
| -rw-r--r-- | fs/f2fs/node.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index 1e354ff..97bd9d3 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -474,7 +474,7 @@ int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) { struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); struct page *npage[4]; - struct page *parent; + struct page *parent = NULL; int offset[4]; unsigned int noffset[4]; nid_t nids[4]; @@ -491,6 +491,14 @@ int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) if (IS_ERR(npage[0])) return PTR_ERR(npage[0]); } + + /* if inline_data is set, should not report any block indices */ + if (f2fs_has_inline_data(dn->inode) && index) { + err = -EINVAL; + f2fs_put_page(npage[0], 1); + goto release_out; + } + parent = npage[0]; if (level != 0) nids[1] = get_nid(parent, offset[0], true); |
