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| author | Gao Xiang <hsiangkao@linux.alibaba.com> | 2022-09-09 05:39:48 +0300 |
|---|---|---|
| committer | Gao Xiang <hsiangkao@linux.alibaba.com> | 2022-09-20 02:59:32 +0300 |
| commit | 1dd73601a1cba37a0ed5f89a8662c90191df5873 (patch) | |
| tree | 657be8bb59e31a87bdbe5abbcfedd78c0c8c6eff /fs/erofs/fscache.c | |
| parent | 80e78fcce86de0288793a0ef0f6acf37656ee4cf (diff) | |
| download | linux-1dd73601a1cba37a0ed5f89a8662c90191df5873.tar.xz | |
erofs: fix order >= MAX_ORDER warning due to crafted negative i_size
As syzbot reported [1], the root cause is that i_size field is a
signed type, and negative i_size is also less than EROFS_BLKSIZ.
As a consequence, it's handled as fast symlink unexpectedly.
Let's fall back to the generic path to deal with such unusual i_size.
[1] https://lore.kernel.org/r/000000000000ac8efa05e7feaa1f@google.com
Reported-by: syzbot+f966c13b1b4fc0403b19@syzkaller.appspotmail.com
Fixes: 431339ba9042 ("staging: erofs: add inode operations")
Reviewed-by: Yue Hu <huyue2@coolpad.com>
Link: https://lore.kernel.org/r/20220909023948.28925-1-hsiangkao@linux.alibaba.com
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Diffstat (limited to 'fs/erofs/fscache.c')
0 files changed, 0 insertions, 0 deletions