diff options
| author | Zhengchao Shao <shaozhengchao@huawei.com> | 2022-11-26 11:17:20 +0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-11-29 08:30:50 -0800 |
| commit | 9ed7bfc79542119ac0a9e1ce8a2a5285e43433e9 (patch) | |
| tree | 3d01462e2ffd50cdf2b0edeb4c1b4d0c512a944e /include/net/sctp | |
| parent | b85f628aa158a653c006e9c1405a117baef8c868 (diff) | |
sctp: fix memory leak in sctp_stream_outq_migrate()
When sctp_stream_outq_migrate() is called to release stream out resources,
the memory pointed to by prio_head in stream out is not released.
The memory leak information is as follows:
unreferenced object 0xffff88801fe79f80 (size 64):
comm "sctp_repo", pid 7957, jiffies 4294951704 (age 36.480s)
hex dump (first 32 bytes):
80 9f e7 1f 80 88 ff ff 80 9f e7 1f 80 88 ff ff ................
90 9f e7 1f 80 88 ff ff 90 9f e7 1f 80 88 ff ff ................
backtrace:
[<ffffffff81b215c6>] kmalloc_trace+0x26/0x60
[<ffffffff88ae517c>] sctp_sched_prio_set+0x4cc/0x770
[<ffffffff88ad64f2>] sctp_stream_init_ext+0xd2/0x1b0
[<ffffffff88aa2604>] sctp_sendmsg_to_asoc+0x1614/0x1a30
[<ffffffff88ab7ff1>] sctp_sendmsg+0xda1/0x1ef0
[<ffffffff87f765ed>] inet_sendmsg+0x9d/0xe0
[<ffffffff8754b5b3>] sock_sendmsg+0xd3/0x120
[<ffffffff8755446a>] __sys_sendto+0x23a/0x340
[<ffffffff87554651>] __x64_sys_sendto+0xe1/0x1b0
[<ffffffff89978b49>] do_syscall_64+0x39/0xb0
[<ffffffff89a0008b>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
Link: https://syzkaller.appspot.com/bug?exrid=29c402e56c4760763cc0
Fixes: 637784ade221 ("sctp: introduce priority based stream scheduler")
Reported-by: syzbot+29c402e56c4760763cc0@syzkaller.appspotmail.com
Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Reviewed-by: Xin Long <lucien.xin@gmail.com>
Link: https://lore.kernel.org/r/20221126031720.378562-1-shaozhengchao@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/net/sctp')
| -rw-r--r-- | include/net/sctp/stream_sched.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/net/sctp/stream_sched.h b/include/net/sctp/stream_sched.h index 01a70b27e026..65058faea4db 100644 --- a/include/net/sctp/stream_sched.h +++ b/include/net/sctp/stream_sched.h @@ -26,6 +26,8 @@ struct sctp_sched_ops { int (*init)(struct sctp_stream *stream); /* Init a stream */ int (*init_sid)(struct sctp_stream *stream, __u16 sid, gfp_t gfp); + /* free a stream */ + void (*free_sid)(struct sctp_stream *stream, __u16 sid); /* Frees the entire thing */ void (*free)(struct sctp_stream *stream); |