ext4: Fix the NULL reference in double_down_write_data_sem()

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If EXT4_IOC_MOVE_EXT ioctl is called with NULL donor_fd, fget() in
ext4_ioctl() gets inappropriate file structure for donor; so we need
to do this check earlier, before calling double_down_write_data_sem().

Signed-off-by: Akira Fujita <a-fujita@rs.jp.nec.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

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Akira Fujita 2010-03-04 00:34:58 -05:00 • committed by Theodore Ts'o

parent 5fd5249aa3

commit 7247c0caa2

1 changed files with 8 additions and 8 deletions

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fs/ext4/move_extent.c

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