| commit | a969a632cbe7165d448a5528806ad120c2599397 | [log] [tgz] |
|---|---|---|
| author | Davide Caratti <dcaratti@redhat.com> | Wed Dec 16 19:33:29 2020 +0100 |
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | Wed Jan 06 14:56:48 2021 +0100 |
| tree | c4a18f0225ed32c971dcd29e88a4ebb7cc2239fe | |
| parent | b1313fe517ca3703119dcc99ef3bbf75ab42bcfb [diff] |
net/sched: sch_taprio: reset child qdiscs before freeing them
[ Upstream commit 44d4775ca51805b376a8db5b34f650434a08e556 ]
syzkaller shows that packets can still be dequeued while taprio_destroy()
is running. Let sch_taprio use the reset() function to cancel the advance
timer and drop all skbs from the child qdiscs.
Fixes: 5a781ccbd19e ("tc: Add support for configuring the taprio scheduler")
Link: https://syzkaller.appspot.com/bug?id=f362872379bf8f0017fb667c1ab158f2d1e764ae
Reported-by: syzbot+8971da381fb5a31f542d@syzkaller.appspotmail.com
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Acked-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Link: https://lore.kernel.org/r/63b6d79b0e830ebb0283e020db4df3cdfdfb2b94.1608142843.git.dcaratti@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>