f2fs: check position in move range ioctl

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When the move range ioctl is used, check the input and output position and
ensure that it is a non-negative value. Without this check
f2fs_get_dnode_of_data may hit a memmory bug.

Signed-off-by: Dan Robertson <dan@dlrobertson.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

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Dan Robertson 2020-08-30 21:45:23 +00:00 • committed by Jaegeuk Kim

parent 335cac8b25

commit aad1383cbf

1 changed files with 3 additions and 0 deletions

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fs/f2fs/file.c

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