BACKPORT: f2fs: add a max block check for get_data_block_bmap

(cherry pick from commit 179448bfe4cd201e98e728391c6b01b25c849fe8)

This patch adds a max block check for get_data_block_bmap.

Trinity test program will send a block number as parameter into
ioctl_fibmap, which will be used in get_node_path(), when the block
number large than f2fs max blocks, it will trigger kernel bug.

Signed-off-by: Yunlei He <>
Signed-off-by: Xue Liu <>
[Jaegeuk Kim: fix missing condition, pointed by Chao Yu]
Signed-off-by: Jaegeuk Kim <>
Bug: 28271368
Change-Id: Ia5acae04522993d5b60a0bcb5ccc184c66532be8
3 files changed