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Filename Latest commit message Latest commit date
Chao Yu 5624a3c1b1 f2fs: fix to avoid dirent corruption
[ Upstream commit 53edb549565f55ccd0bdf43be3d66ce4c2d48b28 ]

As Al reported in link[1]:

f2fs_rename()
...
	if (old_dir != new_dir && !whiteout)
		f2fs_set_link(old_inode, old_dir_entry,
					old_dir_page, new_dir);
	else
		f2fs_put_page(old_dir_page, 0);

You want correct inumber in the ".." link.  And cross-directory
rename does move the source to new parent, even if you'd been asked
to leave a whiteout in the old place.

[1] https://lore.kernel.org/all/20231017055040.GN800259@ZenIV/

With below testcase, it may cause dirent corruption, due to it missed
to call f2fs_set_link() to update ".." link to new directory.
- mkdir -p dir/foo
- renameat2 -w dir/foo bar

[ASSERT] (__chk_dots_dentries:1421)  --> Bad inode number[0x4] for '..', parent parent ino is [0x3]
[FSCK] other corrupted bugs                           [Fail]

Fixes: 7e01e7ad74 ("f2fs: support RENAME_WHITEOUT")
Cc: Jan Kara <jack@suse.cz>
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Chao Yu <chao@kernel.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-01-25 14:34:27 -08:00
arch ARM: davinci: always select CONFIG_CPU_ARM926T 2024-01-25 14:34:26 -08:00
block
certs
crypto crypto: scomp - fix req->dst buffer overflow 2024-01-25 14:34:24 -08:00
Documentation
drivers media: pvrusb2: fix use after free on context disconnection 2024-01-25 14:34:26 -08:00
fs f2fs: fix to avoid dirent corruption 2024-01-25 14:34:27 -08:00
include drm/bridge: Fix typo in post_disable() description 2024-01-25 14:34:27 -08:00
init
ipc
kernel dma-mapping: clear dev->dma_mem to NULL after freeing it 2024-01-25 14:34:25 -08:00
lib
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net ip6_tunnel: fix NEXTHDR_FRAGMENT handling in ip6_tnl_parse_tlv_enc_lim() 2024-01-25 14:34:26 -08:00
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sound
tools selftests/net: fix grep checking for fib_nexthop_multiprefix 2024-01-25 14:34:25 -08:00
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