Warning: Permanently added '10.128.0.133' (ECDSA) to the list of known hosts. executing program [ 70.844007][ T25] audit: type=1804 audit(1632116554.578:2): pid=6519 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor998" name="/root/cgroup.controllers" dev="sda1" ino=13859 res=1 errno=0 executing program [ 72.049207][ T25] audit: type=1804 audit(1632116555.788:3): pid=6520 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor998" name="/root/cgroup.controllers" dev="sda1" ino=13859 res=1 errno=0 [ 72.073073][ T6520] MPTCP: kernel_bind error, err=-98 [ 72.073124][ T6520] [ 72.080619][ T6520] ============================================ [ 72.086745][ T6520] WARNING: possible recursive locking detected [ 72.092874][ T6520] 5.15.0-rc1-syzkaller #0 Not tainted [ 72.098232][ T6520] -------------------------------------------- [ 72.104362][ T6520] syz-executor998/6520 is trying to acquire lock: [ 72.110761][ T6520] ffff8880795718a0 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_close+0x267/0x7b0 [ 72.119839][ T6520] [ 72.119839][ T6520] but task is already holding lock: [ 72.127190][ T6520] ffff8880787c8c60 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_close+0x23/0x7b0 [ 72.136151][ T6520] [ 72.136151][ T6520] other info that might help us debug this: [ 72.144191][ T6520] Possible unsafe locking scenario: [ 72.144191][ T6520] [ 72.151623][ T6520] CPU0 [ 72.154884][ T6520] ---- [ 72.158148][ T6520] lock(k-sk_lock-AF_INET); [ 72.162725][ T6520] lock(k-sk_lock-AF_INET); [ 72.167302][ T6520] [ 72.167302][ T6520] *** DEADLOCK *** [ 72.167302][ T6520] [ 72.175432][ T6520] May be due to missing lock nesting notation [ 72.175432][ T6520] [ 72.183735][ T6520] 3 locks held by syz-executor998/6520: [ 72.189270][ T6520] #0: ffffffff8d176c50 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 [ 72.197454][ T6520] #1: ffffffff8d176d08 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x3e0/0x580 [ 72.206411][ T6520] #2: ffff8880787c8c60 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_close+0x23/0x7b0 [ 72.215805][ T6520] [ 72.215805][ T6520] stack backtrace: [ 72.221768][ T6520] CPU: 1 PID: 6520 Comm: syz-executor998 Not tainted 5.15.0-rc1-syzkaller #0 [ 72.230519][ T6520] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.240562][ T6520] Call Trace: [ 72.243832][ T6520] dump_stack_lvl+0xcd/0x134 [ 72.248416][ T6520] __lock_acquire.cold+0x149/0x3ab [ 72.253528][ T6520] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 72.259500][ T6520] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 72.265481][ T6520] lock_acquire+0x1ab/0x510 [ 72.269981][ T6520] ? mptcp_close+0x267/0x7b0 [ 72.274565][ T6520] ? lock_release+0x720/0x720 [ 72.279235][ T6520] ? mptcp_close+0x23/0x7b0 [ 72.283738][ T6520] lock_sock_fast+0x36/0x100 [ 72.288322][ T6520] ? mptcp_close+0x267/0x7b0 [ 72.292908][ T6520] mptcp_close+0x267/0x7b0 [ 72.297326][ T6520] inet_release+0x12e/0x280 [ 72.301825][ T6520] sock_release+0x87/0x1b0 [ 72.306236][ T6520] mptcp_pm_nl_create_listen_socket+0x238/0x2c0 [ 72.312558][ T6520] ? mptcp_event_put_token_and_ssk+0x3a0/0x3a0 [ 72.318711][ T6520] ? rcu_read_lock_sched_held+0x3a/0x70 [ 72.324249][ T6520] mptcp_nl_cmd_add_addr+0x359/0x930 [ 72.329531][ T6520] ? mptcp_pm_create_subflow_or_signal_addr+0x2540/0x2540 [ 72.336639][ T6520] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.342871][ T6520] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x1b7/0x290 [ 72.350238][ T6520] ? genl_family_rcv_msg_attrs_parse.constprop.0+0xaf/0x290 [ 72.357521][ T6520] genl_family_rcv_msg_doit+0x228/0x320 [ 72.363063][ T6520] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x290/0x290 [ 72.370431][ T6520] ? mutex_lock_io_nested+0x1150/0x1150 [ 72.375975][ T6520] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.382212][ T6520] ? ns_capable+0xd9/0x100 [ 72.386624][ T6520] genl_rcv_msg+0x328/0x580 [ 72.391121][ T6520] ? genl_get_cmd+0x480/0x480 [ 72.395789][ T6520] ? mptcp_pm_create_subflow_or_signal_addr+0x2540/0x2540 [ 72.402896][ T6520] ? lock_release+0x720/0x720 [ 72.407569][ T6520] netlink_rcv_skb+0x153/0x420 [ 72.412324][ T6520] ? genl_get_cmd+0x480/0x480 [ 72.416993][ T6520] ? netlink_ack+0xa60/0xa60 [ 72.421576][ T6520] ? netlink_deliver_tap+0x1b1/0xc30 [ 72.426851][ T6520] ? _copy_from_iter+0x12b/0x1320 [ 72.431876][ T6520] genl_rcv+0x24/0x40 [ 72.435847][ T6520] netlink_unicast+0x533/0x7d0 [ 72.440602][ T6520] ? netlink_attachskb+0x890/0x890 [ 72.445706][ T6520] ? __virt_addr_valid+0x5d/0x2d0 [ 72.450726][ T6520] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 72.456960][ T6520] ? __phys_addr_symbol+0x2c/0x70 [ 72.461980][ T6520] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 72.467693][ T6520] ? __check_object_size+0x16e/0x3f0 [ 72.472976][ T6520] netlink_sendmsg+0x86d/0xdb0 [ 72.477732][ T6520] ? netlink_unicast+0x7d0/0x7d0 [ 72.482663][ T6520] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.488899][ T6520] ? netlink_unicast+0x7d0/0x7d0 [ 72.493825][ T6520] sock_sendmsg+0xcf/0x120 [ 72.498237][ T6520] sock_no_sendpage+0x101/0x150 [ 72.503089][ T6520] ? sk_page_frag_refill+0x1d0/0x1d0 [ 72.508375][ T6520] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 72.514352][ T6520] ? find_held_lock+0x2d/0x110 [ 72.519111][ T6520] kernel_sendpage.part.0+0x1a0/0x340 [ 72.524477][ T6520] sock_sendpage+0xe5/0x140 [ 72.528973][ T6520] ? __sock_recv_ts_and_drops+0x430/0x430 [ 72.534684][ T6520] pipe_to_sendpage+0x2ad/0x380 [ 72.539526][ T6520] ? propagate_umount+0x19f0/0x19f0 [ 72.544716][ T6520] ? __put_page+0xef/0x400 [ 72.549131][ T6520] __splice_from_pipe+0x43e/0x8a0 [ 72.554234][ T6520] ? propagate_umount+0x19f0/0x19f0 [ 72.559442][ T6520] generic_splice_sendpage+0xd4/0x140 [ 72.564808][ T6520] ? __do_sys_vmsplice+0x9d0/0x9d0 [ 72.569913][ T6520] ? security_file_permission+0xab/0xd0 [ 72.575452][ T6520] ? __do_sys_vmsplice+0x9d0/0x9d0 [ 72.580570][ T6520] direct_splice_actor+0x110/0x180 [ 72.585673][ T6520] splice_direct_to_actor+0x34b/0x8c0 [ 72.591039][ T6520] ? generic_file_splice_read+0x6d0/0x6d0 [ 72.596753][ T6520] ? do_splice_to+0x250/0x250 [ 72.601419][ T6520] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.607654][ T6520] ? security_file_permission+0xab/0xd0 [ 72.613192][ T6520] do_splice_direct+0x1b3/0x280 [ 72.618043][ T6520] ? splice_direct_to_actor+0x8c0/0x8c0 [ 72.623581][ T6520] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.629816][ T6520] ? security_file_permission+0xab/0xd0 [ 72.635357][ T6520] do_sendfile+0xae9/0x1240 [ 72.639854][ T6520] ? do_pwritev+0x270/0x270 [ 72.644347][ T6520] ? __context_tracking_exit+0xb8/0xe0 [ 72.649797][ T6520] ? lock_downgrade+0x6e0/0x6e0 [ 72.654642][ T6520] ? lock_downgrade+0x6e0/0x6e0 [ 72.659488][ T6520] __x64_sys_sendfile64+0x1cc/0x210 [ 72.664679][ T6520] ? __ia32_sys_sendfile+0x220/0x220 [ 72.669956][ T6520] ? syscall_enter_from_user_mode+0x21/0x70 [ 72.675846][ T6520] do_syscall_64+0x35/0xb0 [ 72.680258][ T6520] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 72.686150][ T6520] RIP: 0033:0x7f215cb69969 [ 72.690558][ T6520] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 72.710156][ T6520] RSP: 002b:00007ffc96bb3868 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 72.718557][ T6520] RAX: ffffffffffffffda RBX: 00007f215cbad072 RCX: 00007f215cb69969 [ 72.726520][ T6520] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000005 [ 72.734477][ T6520] RBP: 0000000000000000 R08: 00007ffc96bb3a08 R09: 00007ffc96bb3a08 [ 72.742435][ T6520] R10: 0000000100000002 R11: 0000000000000246 R12: 00007ffc96bb387c [ 72.750393][ T6520] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 executing program [ 73.659712][ T25] audit: type=1804 audit(1632116557.398:4): pid=6523 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor998" name="/root/cgroup.controllers" dev="sda1" ino=13859 res=1 errno=0 executing program [ 73.683713][ T6523] MPTCP: kernel_bind error, err=-98 [ 74.561761][ T25] audit: type=1804 audit(1632116558.298:5): pid=6524 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor998" name="/root/cgroup.controllers" dev="sda1" ino=13859 res=1 errno=0 executing program [ 74.590659][ T6524] MPTCP: kernel_bind error, err=-98 [ 75.453848][ T25] audit: type=1804 audit(1632116559.188:6): pid=6525 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor998" name="/root/cgroup.controllers" dev="sda1" ino=13859 res=1 errno=0 executing program [ 75.482655][ T6525] MPTCP: kernel_bind error, err=-98 [ 76.371068][ T25] audit: type=1804 audit(1632116560.108:7): pid=6526 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor998" name="/root/cgroup.controllers" dev="sda1" ino=13859 res=1 errno=0 executing program [ 76.378950][ T6526] MPTCP: kernel_bind error, err=-98 [ 77.294298][ T25] audit: type=1804 audit(1632116561.028:8): pid=6527 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor998" name="/root/cgroup.controllers" dev="sda1" ino=13859 res=1 errno=0 executing program [ 77.297260][ T6527] MPTCP: kernel_bind error, err=-98 [ 78.194070][ T25] audit: type=1804 audit(1632116561.928:9): pid=6528 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor998" name="/root/cgroup.controllers" dev="sda1" ino=13859 res=1 errno=0 executing program [ 78.197835][ T6528] MPTCP: kernel_bind error, err=-98 [ 79.068136][ T25] audit: type=1804 audit(1632116562.808:10): pid=6529 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor998" name="/root/cgroup.controllers" dev="sda1" ino=13859 res=1 errno=0 executing program [ 79.077708][ T6529] MPTCP: kernel_bind error, err=-98 [ 79.911701][ T25] audit: type=1804 audit(1632116563.648:11): pid=6530 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor998" name="/root/cgroup.controllers" dev="sda1" ino=13859 res=1 errno=0 executing program [ 79.920755][ T6530] MPTCP: kernel_bind error, err=-98 [ 80.789582][ T25] audit: type=1804 audit(1632116564.528:12): pid=6531 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor998" name="/root/cgroup.controllers" dev="sda1" ino=13859 res=1 errno=0 executing program [ 80.799957][ T6531] MPTCP: kernel_bind error, err=-98 [ 81.699928][ T25] audit: type=1804 audit(1632116565.438:13): pid=6532 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor998" name="/root/cgroup.controllers" dev="sda1" ino=13859 res=1 errno=0