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| author | Baokun Li <[email protected]> | 2022-10-26 04:23:09 +0000 |
|---|---|---|
| committer | Theodore Ts'o <[email protected]> | 2022-12-09 02:49:23 +0000 |
| commit | 63b1e9bccb71fe7d7e3ddc9877dbdc85e5d2d023 (patch) | |
| tree | 4ed38e687a8091cd17a1a9499802083fb2157dab /fs/ext4/fast_commit.c | |
| parent | ext4: add helper to check quota inums (diff) | |
| download | kernel-63b1e9bccb71fe7d7e3ddc9877dbdc85e5d2d023.tar.gz kernel-63b1e9bccb71fe7d7e3ddc9877dbdc85e5d2d023.zip | |
ext4: add EXT4_IGET_BAD flag to prevent unexpected bad inode
There are many places that will get unhappy (and crash) when ext4_iget()
returns a bad inode. However, if iget the boot loader inode, allows a bad
inode to be returned, because the inode may not be initialized. This
mechanism can be used to bypass some checks and cause panic. To solve this
problem, we add a special iget flag EXT4_IGET_BAD. Only with this flag
we'd be returning bad inode from ext4_iget(), otherwise we always return
the error code if the inode is bad inode.(suggested by Jan Kara)
Signed-off-by: Baokun Li <[email protected]>
Reviewed-by: Jason Yan <[email protected]>
Reviewed-by: Jan Kara <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Theodore Ts'o <[email protected]>
Cc: [email protected]
Diffstat (limited to 'fs/ext4/fast_commit.c')
0 files changed, 0 insertions, 0 deletions