Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
ext2: Fix fs corruption in ext2_get_xip_mem()
Commit 8e3dffc "Ext2: mark inode dirty after the function dquot_free_block_nodirty is called" unveiled a bug in __ext2_get_block() called from ext2_get_xip_mem(). That function called ext2_get_block() mistakenly asking it to map 0 blocks while 1 was intended. Before the above mentioned commit things worked out fine by luck but after that commit we started returning that we allocated 0 blocks while we in fact allocated 1 block and thus allocation was looping until all blocks in the filesystem were exhausted. Fix the problem by properly asking for one block and also add assertion in ext2_get_blocks() to catch similar problems. Reported-and-tested-by: Andiry Xu <[email protected]> Signed-off-by: Jan Kara <[email protected]>
- Loading branch information