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(parent: 9a01b56) | patch
f2fs: fix negative value for lseek offset
authorJaegeuk Kim <jaegeuk@kernel.org>
Mon, 8 Sep 2014 17:59:43 +0000 (10:59 -0700)
committerJaegeuk Kim <jaegeuk@kernel.org>
Tue, 9 Sep 2014 21:46:36 +0000 (14:46 -0700)
commit0b4c5afde9b57c08b55d26725d228d5314cfc57a
treef034d99b62dd117b135c82061cf1f64d2d0b68aetree | snapshot (tar.gz zip)
parent9a01b56b1a79e210e9d2d67c9b18906d31d536c4commit | diff
f2fs: fix negative value for lseek offset

If application throws negative value of lseek with SEEK_DATA|SEEK_HOLE,
previous f2fs went into BUG_ON in get_dnode_of_data, which was reported
by Tommi Rantala.

He could make a simple code to detect this having:
lseek(fd, -17595150933902LL, SEEK_DATA);

This patch should resolve that bug.

Reported-by: Tommi Rentala <tt.rantala@gmail.com>
[Jaegeuk Kim: relocate the condition as suggested by Chao]
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
fs/f2fs/file.c diff | blob | blame | history