gfs2: Don't leave s_fs_info pointing to freed memory in init_sbd

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commit 4c62bd9cea upstream.

When alloc_percpu() fails, sdp gets freed but sb->s_fs_info still points
to the same address. Move the assignment after that error check so that
s_fs_info can only point to a valid sdp or NULL, which is checked for
later in the error path, in gfs2_kill_super().

Reported-by: syzbot+dcb8b3587445007f5808@syzkaller.appspotmail.com
Signed-off-by: Andrew Price <anprice@redhat.com>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Andrew Price 2018-10-08 07:52:43 -05:00 • committed by Greg Kroah-Hartman

parent cd947138e8

commit 331bd738eb

1 changed files with 1 additions and 1 deletions

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fs/gfs2/ops_fstype.c

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