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| author | Xin Long <lucien.xin@gmail.com> | 2019-03-08 15:49:16 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-03-08 11:24:33 -0800 |
| commit | 2e990dfd13974d9eae493006f42ffb48707970ef (patch) | |
| tree | e7a67cb4b585a70221c095359967e47177871dce /net/rxrpc/conn_client.c | |
| parent | ee60ad219f5c7c4fb2f047f88037770063ef785f (diff) | |
| download | lwn-2e990dfd13974d9eae493006f42ffb48707970ef.tar.gz lwn-2e990dfd13974d9eae493006f42ffb48707970ef.zip | |
sctp: remove sched init from sctp_stream_init
syzbot reported a NULL-ptr deref caused by that sched->init() in
sctp_stream_init() set stream->rr_next = NULL.
kasan: GPF could be caused by NULL-ptr deref or user memory access
RIP: 0010:sctp_sched_rr_dequeue+0xd3/0x170 net/sctp/stream_sched_rr.c:141
Call Trace:
sctp_outq_dequeue_data net/sctp/outqueue.c:90 [inline]
sctp_outq_flush_data net/sctp/outqueue.c:1079 [inline]
sctp_outq_flush+0xba2/0x2790 net/sctp/outqueue.c:1205
All sched info is saved in sout->ext now, in sctp_stream_init()
sctp_stream_alloc_out() will not change it, there's no need to
call sched->init() again, since sctp_outq_init() has already
done it.
Fixes: 5bbbbe32a431 ("sctp: introduce stream scheduler foundations")
Reported-by: syzbot+4c9934f20522c0efd657@syzkaller.appspotmail.com
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rxrpc/conn_client.c')
0 files changed, 0 insertions, 0 deletions