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| author | NeilBrown <neilb@suse.com> | 2017-06-23 22:08:43 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-06-29 11:00:28 (GMT) |
| commit | bc6eecff3d9594b2d5b9f41d4b480dba720e00ca (patch) | |
| tree | 6273bead2889740c2bf337a5a740248b09edbb5d /lib | |
| parent | 4b660fcbc64ebd8a9a0acd12f15e3dc1ab0480b2 (diff) | |
| download | linux-bc6eecff3d9594b2d5b9f41d4b480dba720e00ca.tar.xz | |
autofs: sanity check status reported with AUTOFS_DEV_IOCTL_FAIL
commit 9fa4eb8e490a28de40964b1b0e583d8db4c7e57c upstream.
If a positive status is passed with the AUTOFS_DEV_IOCTL_FAIL ioctl,
autofs4_d_automount() will return
ERR_PTR(status)
with that status to follow_automount(), which will then dereference an
invalid pointer.
So treat a positive status the same as zero, and map to ENOENT.
See comment in systemd src/core/automount.c::automount_send_ready().
Link: http://lkml.kernel.org/r/871sqwczx5.fsf@notabene.neil.brown.name
Signed-off-by: NeilBrown <neilb@suse.com>
Cc: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions