Hello, syzbot found the following issue on: HEAD commit: b2d229d4ddb1 Linux 5.18-rc3 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17e439b8f00000 kernel config: https://syzkaller.appspot.com/x/.config?x=2197cd22d3971cc5 dashboard link: https://syzkaller.appspot.com/bug?extid=29c402e56c4760763cc0 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17daf0af700000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10ae4d5cf00000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+29c402e56c4760763cc0@xxxxxxxxxxxxxxxxxxxxxxxxx executing program executing program BUG: memory leak unreferenced object 0xffff88810b472a00 (size 64): comm "syz-executor206", pid 3601, jiffies 4294944661 (age 12.290s) hex dump (first 32 bytes): 00 2a 47 0b 81 88 ff ff 00 2a 47 0b 81 88 ff ff .*G......*G..... 10 2a 47 0b 81 88 ff ff 10 2a 47 0b 81 88 ff ff .*G......*G..... backtrace: [<ffffffff83fa1634>] kmalloc include/linux/slab.h:581 [inline] [<ffffffff83fa1634>] sctp_sched_prio_new_head net/sctp/stream_sched_prio.c:33 [inline] [<ffffffff83fa1634>] sctp_sched_prio_get_head net/sctp/stream_sched_prio.c:77 [inline] [<ffffffff83fa1634>] sctp_sched_prio_set+0x2c4/0x370 net/sctp/stream_sched_prio.c:159 [<ffffffff83f9b6a6>] sctp_stream_init_ext+0x86/0xf0 net/sctp/stream.c:176 [<ffffffff83f86e0e>] sctp_sendmsg_to_asoc+0xc8e/0xdb0 net/sctp/socket.c:1807 [<ffffffff83f8f77f>] sctp_sendmsg+0x99f/0x1030 net/sctp/socket.c:2027 [<ffffffff83b7a315>] inet_sendmsg+0x45/0x70 net/ipv4/af_inet.c:819 [<ffffffff837cb3e6>] sock_sendmsg_nosec net/socket.c:705 [inline] [<ffffffff837cb3e6>] sock_sendmsg+0x56/0x80 net/socket.c:725 [<ffffffff837ce38c>] __sys_sendto+0x15c/0x200 net/socket.c:2040 [<ffffffff837ce456>] __do_sys_sendto net/socket.c:2052 [inline] [<ffffffff837ce456>] __se_sys_sendto net/socket.c:2048 [inline] [<ffffffff837ce456>] __x64_sys_sendto+0x26/0x30 net/socket.c:2048 [<ffffffff8451da45>] do_syscall_x64 arch/x86/entry/common.c:50 [inline] [<ffffffff8451da45>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 [<ffffffff84600068>] entry_SYSCALL_64_after_hwframe+0x44/0xae --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
