INFO: task syz-executor1:21377 blocked for more than 143 seconds. Not tainted 5.5.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor1 D26472 21377 6367 0x00004004 Call Trace: context_switch kernel/sched/core.c:3385 [inline] __schedule+0x856/0x1910 kernel/sched/core.c:4081 schedule+0xc3/0x2b0 kernel/sched/core.c:4155 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4214 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x8b5/0x1410 kernel/locking/mutex.c:1103 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118 genl_lock net/netlink/genetlink.c:33 [inline] ctrl_getfamily+0x2c0/0x400 net/netlink/genetlink.c:981 genl_family_rcv_msg_doit net/netlink/genetlink.c:672 [inline] genl_family_rcv_msg net/netlink/genetlink.c:717 [inline] genl_rcv_msg+0x5e1/0x10f0 net/netlink/genetlink.c:734 netlink_rcv_skb+0x13f/0x380 net/netlink/af_netlink.c:2477 genl_rcv+0x23/0x40 net/netlink/genetlink.c:745 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x463/0x6b0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x7b0/0xcb0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:639 [inline] sock_sendmsg+0xe6/0x110 net/socket.c:659 ____sys_sendmsg+0x603/0x980 net/socket.c:2330 ___sys_sendmsg+0xe4/0x160 net/socket.c:2384 __sys_sendmsg+0xd9/0x180 net/socket.c:2417 __do_sys_sendmsg net/socket.c:2426 [inline] __se_sys_sendmsg net/socket.c:2424 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2424 do_syscall_64+0xd0/0x600 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411231 Code: 01 4c 89 54 24 28 e9 6f fa ff ff 49 8b 7c 24 70 8b 35 43 c4 24 00 ff 15 ed 83 24 00 85 c0 0f 85 b3 fe ff ff 49 8b 7c 24 70 be <20> 13 41 00 ff 15 dd 83 24 00 85 c0 0f 85 9b fe ff ff 49 8b 7c 24 RSP: 002b:00007ff5bc3649c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000411231 RDX: 0000000000000000 RSI: 00007ff5bc364a00 RDI: 0000000000000007 RBP: 0000000000000007 R08: 00007ff5bc3649d0 R09: 000000000072bf00 R10: 0000000000000000 R11: 0000000000000293 R12: 00007ff5bc364a40 R13: 00000000004cc538 R14: 00000000004d9a08 R15: 00000000ffffffff INFO: task syz-executor2:21385 blocked for more than 143 seconds. Not tainted 5.5.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor2 D27648 21385 6368 0x00004004 Call Trace: context_switch kernel/sched/core.c:3385 [inline] __schedule+0x856/0x1910 kernel/sched/core.c:4081 schedule+0xc3/0x2b0 kernel/sched/core.c:4155 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4214 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x8b5/0x1410 kernel/locking/mutex.c:1103 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118 genl_lock net/netlink/genetlink.c:33 [inline] ctrl_getfamily+0x2c0/0x400 net/netlink/genetlink.c:981 genl_family_rcv_msg_doit net/netlink/genetlink.c:672 [inline] genl_family_rcv_msg net/netlink/genetlink.c:717 [inline] genl_rcv_msg+0x5e1/0x10f0 net/netlink/genetlink.c:734 netlink_rcv_skb+0x13f/0x380 net/netlink/af_netlink.c:2477 genl_rcv+0x23/0x40 net/netlink/genetlink.c:745 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x463/0x6b0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x7b0/0xcb0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:639 [inline] sock_sendmsg+0xe6/0x110 net/socket.c:659 ____sys_sendmsg+0x603/0x980 net/socket.c:2330 ___sys_sendmsg+0xe4/0x160 net/socket.c:2384 __sys_sendmsg+0xd9/0x180 net/socket.c:2417 __do_sys_sendmsg net/socket.c:2426 [inline] __se_sys_sendmsg net/socket.c:2424 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2424 do_syscall_64+0xd0/0x600 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411231 Code: 01 4c 89 54 24 28 e9 6f fa ff ff 49 8b 7c 24 70 8b 35 43 c4 24 00 ff 15 ed 83 24 00 85 c0 0f 85 b3 fe ff ff 49 8b 7c 24 70 be <20> 13 41 00 ff 15 dd 83 24 00 85 c0 0f 85 9b fe ff ff 49 8b 7c 24 RSP: 002b:00007f9868bc99c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000411231 RDX: 0000000000000000 RSI: 00007f9868bc9a00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 00007f9868bc99d0 R09: 000000000072bf00 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f9868bc9a40 R13: 00000000004cc538 R14: 00000000004d9a08 R15: 00000000ffffffff INFO: task syz-executor2:21402 blocked for more than 144 seconds. Not tainted 5.5.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor2 D28536 21402 6368 0x00000004 Call Trace: context_switch kernel/sched/core.c:3385 [inline] __schedule+0x856/0x1910 kernel/sched/core.c:4081 schedule+0xc3/0x2b0 kernel/sched/core.c:4155 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4214 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x8b5/0x1410 kernel/locking/mutex.c:1103 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 netlink_rcv_skb+0x13f/0x380 net/netlink/af_netlink.c:2477 genl_rcv+0x23/0x40 net/netlink/genetlink.c:745 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x463/0x6b0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x7b0/0xcb0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:639 [inline] sock_sendmsg+0xe6/0x110 net/socket.c:659 ____sys_sendmsg+0x603/0x980 net/socket.c:2330 ___sys_sendmsg+0xe4/0x160 net/socket.c:2384 __sys_sendmsg+0xd9/0x180 net/socket.c:2417 __do_sys_sendmsg net/socket.c:2426 [inline] __se_sys_sendmsg net/socket.c:2424 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2424 do_syscall_64+0xd0/0x600 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411231 Code: 01 4c 89 54 24 28 e9 6f fa ff ff 49 8b 7c 24 70 8b 35 43 c4 24 00 ff 15 ed 83 24 00 85 c0 0f 85 b3 fe ff ff 49 8b 7c 24 70 be <20> 13 41 00 ff 15 dd 83 24 00 85 c0 0f 85 9b fe ff ff 49 8b 7c 24 RSP: 002b:00007f9868ba89c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f9868ba8a58 RCX: 0000000000411231 RDX: 0000000000000000 RSI: 00007f9868ba8a00 RDI: 0000000000000006 RBP: 0000000000000006 R08: 000000000000000b R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000293 R12: 00007f9868ba8a40 R13: 00000000004cc510 R14: 00000000004d99f0 R15: 00000000ffffffff INFO: task syz-executor2:21408 blocked for more than 144 seconds. Not tainted 5.5.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor2 D28408 21408 6368 0x00004004 Call Trace: context_switch kernel/sched/core.c:3385 [inline] __schedule+0x856/0x1910 kernel/sched/core.c:4081 schedule+0xc3/0x2b0 kernel/sched/core.c:4155 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4214 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x8b5/0x1410 kernel/locking/mutex.c:1103 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 netlink_rcv_skb+0x13f/0x380 net/netlink/af_netlink.c:2477 genl_rcv+0x23/0x40 net/netlink/genetlink.c:745 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x463/0x6b0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x7b0/0xcb0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:639 [inline] sock_sendmsg+0xe6/0x110 net/socket.c:659 ____sys_sendmsg+0x603/0x980 net/socket.c:2330 ___sys_sendmsg+0xe4/0x160 net/socket.c:2384 __sys_sendmsg+0xd9/0x180 net/socket.c:2417 __do_sys_sendmsg net/socket.c:2426 [inline] __se_sys_sendmsg net/socket.c:2424 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2424 do_syscall_64+0xd0/0x600 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411231 Code: 01 4c 89 54 24 28 e9 6f fa ff ff 49 8b 7c 24 70 8b 35 43 c4 24 00 ff 15 ed 83 24 00 85 c0 0f 85 b3 fe ff ff 49 8b 7c 24 70 be <20> 13 41 00 ff 15 dd 83 24 00 85 c0 0f 85 9b fe ff ff 49 8b 7c 24 RSP: 002b:00007f9868b879c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000411231 RDX: 0000000000000000 RSI: 00007f9868b87a00 RDI: 0000000000000009 RBP: 0000000000000009 R08: 00007f9868b879d0 R09: 000000000072c040 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f9868b87a40 R13: 00000000004cc538 R14: 00000000004d9a08 R15: 00000000ffffffff INFO: task syz-executor2:21417 blocked for more than 144 seconds. Not tainted 5.5.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor2 D28536 21417 6368 0x00004004 Call Trace: context_switch kernel/sched/core.c:3385 [inline] __schedule+0x856/0x1910 kernel/sched/core.c:4081 schedule+0xc3/0x2b0 kernel/sched/core.c:4155 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4214 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x8b5/0x1410 kernel/locking/mutex.c:1103 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 netlink_rcv_skb+0x13f/0x380 net/netlink/af_netlink.c:2477 genl_rcv+0x23/0x40 net/netlink/genetlink.c:745 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x463/0x6b0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x7b0/0xcb0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:639 [inline] sock_sendmsg+0xe6/0x110 net/socket.c:659 ____sys_sendmsg+0x603/0x980 net/socket.c:2330 ___sys_sendmsg+0xe4/0x160 net/socket.c:2384 __sys_sendmsg+0xd9/0x180 net/socket.c:2417 __do_sys_sendmsg net/socket.c:2426 [inline] __se_sys_sendmsg net/socket.c:2424 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2424 do_syscall_64+0xd0/0x600 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411231 Code: 01 4c 89 54 24 28 e9 6f fa ff ff 49 8b 7c 24 70 8b 35 43 c4 24 00 ff 15 ed 83 24 00 85 c0 0f 85 b3 fe ff ff 49 8b 7c 24 70 be <20> 13 41 00 ff 15 dd 83 24 00 85 c0 0f 85 9b fe ff ff 49 8b 7c 24 RSP: 002b:00007f9868b669c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f9868b66a58 RCX: 0000000000411231 RDX: 0000000000000000 RSI: 00007f9868b66a00 RDI: 000000000000000a RBP: 000000000000000a R08: 000000000000000b R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000293 R12: 00007f9868b66a40 R13: 00000000004cc510 R14: 00000000004d99f0 R15: 00000000ffffffff INFO: task syz-executor3:21400 blocked for more than 144 seconds. Not tainted 5.5.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor3 D28536 21400 6363 0x00000004 Call Trace: context_switch kernel/sched/core.c:3385 [inline] __schedule+0x856/0x1910 kernel/sched/core.c:4081 schedule+0xc3/0x2b0 kernel/sched/core.c:4155 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4214 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x8b5/0x1410 kernel/locking/mutex.c:1103 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 netlink_rcv_skb+0x13f/0x380 net/netlink/af_netlink.c:2477 genl_rcv+0x23/0x40 net/netlink/genetlink.c:745 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x463/0x6b0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x7b0/0xcb0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:639 [inline] sock_sendmsg+0xe6/0x110 net/socket.c:659 ____sys_sendmsg+0x603/0x980 net/socket.c:2330 ___sys_sendmsg+0xe4/0x160 net/socket.c:2384 __sys_sendmsg+0xd9/0x180 net/socket.c:2417 __do_sys_sendmsg net/socket.c:2426 [inline] __se_sys_sendmsg net/socket.c:2424 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2424 do_syscall_64+0xd0/0x600 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411231 Code: 01 4c 89 54 24 28 e9 6f fa ff ff 49 8b 7c 24 70 8b 35 43 c4 24 00 ff 15 ed 83 24 00 85 c0 0f 85 b3 fe ff ff 49 8b 7c 24 70 be <20> 13 41 00 ff 15 dd 83 24 00 85 c0 0f 85 9b fe ff ff 49 8b 7c 24 RSP: 002b:00007fe09f8669c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000411231 RDX: 0000000000000000 RSI: 00007fe09f866a00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 00007fe09f8669d0 R09: 000000000072bf00 R10: ffffffffffffffff R11: 0000000000000293 R12: 00007fe09f866a40 R13: 00000000004cc538 R14: 00000000004d9a08 R15: 00000000ffffffff INFO: task syz-executor3:21409 blocked for more than 145 seconds. Not tainted 5.5.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor3 D28536 21409 6363 0x00004004 Call Trace: context_switch kernel/sched/core.c:3385 [inline] __schedule+0x856/0x1910 kernel/sched/core.c:4081 schedule+0xc3/0x2b0 kernel/sched/core.c:4155 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4214 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x8b5/0x1410 kernel/locking/mutex.c:1103 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 netlink_rcv_skb+0x13f/0x380 net/netlink/af_netlink.c:2477 genl_rcv+0x23/0x40 net/netlink/genetlink.c:745 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x463/0x6b0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x7b0/0xcb0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:639 [inline] sock_sendmsg+0xe6/0x110 net/socket.c:659 ____sys_sendmsg+0x603/0x980 net/socket.c:2330 ___sys_sendmsg+0xe4/0x160 net/socket.c:2384 __sys_sendmsg+0xd9/0x180 net/socket.c:2417 __do_sys_sendmsg net/socket.c:2426 [inline] __se_sys_sendmsg net/socket.c:2424 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2424 do_syscall_64+0xd0/0x600 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411231 Code: 01 4c 89 54 24 28 e9 6f fa ff ff 49 8b 7c 24 70 8b 35 43 c4 24 00 ff 15 ed 83 24 00 85 c0 0f 85 b3 fe ff ff 49 8b 7c 24 70 be <20> 13 41 00 ff 15 dd 83 24 00 85 c0 0f 85 9b fe ff ff 49 8b 7c 24 RSP: 002b:00007fe09f8459c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fe09f845a58 RCX: 0000000000411231 RDX: 0000000000000000 RSI: 00007fe09f845a00 RDI: 0000000000000006 RBP: 0000000000000006 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007fe09f845a40 R13: 00000000004cc510 R14: 00000000004d99f0 R15: 00000000ffffffff INFO: task syz-executor3:21413 blocked for more than 145 seconds. Not tainted 5.5.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor3 D28224 21413 6363 0x00004004 Call Trace: context_switch kernel/sched/core.c:3385 [inline] __schedule+0x856/0x1910 kernel/sched/core.c:4081 schedule+0xc3/0x2b0 kernel/sched/core.c:4155 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4214 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x8b5/0x1410 kernel/locking/mutex.c:1103 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 netlink_rcv_skb+0x13f/0x380 net/netlink/af_netlink.c:2477 genl_rcv+0x23/0x40 net/netlink/genetlink.c:745 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x463/0x6b0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x7b0/0xcb0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:639 [inline] sock_sendmsg+0xe6/0x110 net/socket.c:659 ____sys_sendmsg+0x603/0x980 net/socket.c:2330 ___sys_sendmsg+0xe4/0x160 net/socket.c:2384 __sys_sendmsg+0xd9/0x180 net/socket.c:2417 __do_sys_sendmsg net/socket.c:2426 [inline] __se_sys_sendmsg net/socket.c:2424 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2424 do_syscall_64+0xd0/0x600 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411231 Code: 01 4c 89 54 24 28 e9 6f fa ff ff 49 8b 7c 24 70 8b 35 43 c4 24 00 ff 15 ed 83 24 00 85 c0 0f 85 b3 fe ff ff 49 8b 7c 24 70 be <20> 13 41 00 ff 15 dd 83 24 00 85 c0 0f 85 9b fe ff ff 49 8b 7c 24 RSP: 002b:00007fe09f8249c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000411231 RDX: 0000000000000000 RSI: 00007fe09f824a00 RDI: 0000000000000009 RBP: 0000000000000009 R08: 00007fe09f8249d0 R09: 000000000072c040 R10: 0000000000000000 R11: 0000000000000293 R12: 00007fe09f824a40 R13: 00000000004cc538 R14: 00000000004d9a08 R15: 00000000ffffffff INFO: task syz-executor3:21419 blocked for more than 145 seconds. Not tainted 5.5.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor3 D28536 21419 6363 0x00004004 Call Trace: context_switch kernel/sched/core.c:3385 [inline] __schedule+0x856/0x1910 kernel/sched/core.c:4081 schedule+0xc3/0x2b0 kernel/sched/core.c:4155 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4214 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x8b5/0x1410 kernel/locking/mutex.c:1103 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 netlink_rcv_skb+0x13f/0x380 net/netlink/af_netlink.c:2477 genl_rcv+0x23/0x40 net/netlink/genetlink.c:745 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x463/0x6b0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x7b0/0xcb0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:639 [inline] sock_sendmsg+0xe6/0x110 net/socket.c:659 ____sys_sendmsg+0x603/0x980 net/socket.c:2330 ___sys_sendmsg+0xe4/0x160 net/socket.c:2384 __sys_sendmsg+0xd9/0x180 net/socket.c:2417 __do_sys_sendmsg net/socket.c:2426 [inline] __se_sys_sendmsg net/socket.c:2424 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2424 do_syscall_64+0xd0/0x600 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411231 Code: 01 4c 89 54 24 28 e9 6f fa ff ff 49 8b 7c 24 70 8b 35 43 c4 24 00 ff 15 ed 83 24 00 85 c0 0f 85 b3 fe ff ff 49 8b 7c 24 70 be <20> 13 41 00 ff 15 dd 83 24 00 85 c0 0f 85 9b fe ff ff 49 8b 7c 24 RSP: 002b:00007fe09f8039c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fe09f803a58 RCX: 0000000000411231 RDX: 0000000000000000 RSI: 00007fe09f803a00 RDI: 000000000000000a RBP: 000000000000000a R08: 000000000000000b R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000293 R12: 00007fe09f803a40 R13: 00000000004cc510 R14: 00000000004d99f0 R15: 00000000ffffffff INFO: task syz-executor4:21404 blocked for more than 146 seconds. Not tainted 5.5.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor4 D28536 21404 6359 0x00000004 Call Trace: context_switch kernel/sched/core.c:3385 [inline] __schedule+0x856/0x1910 kernel/sched/core.c:4081 schedule+0xc3/0x2b0 kernel/sched/core.c:4155 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4214 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x8b5/0x1410 kernel/locking/mutex.c:1103 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 netlink_rcv_skb+0x13f/0x380 net/netlink/af_netlink.c:2477 genl_rcv+0x23/0x40 net/netlink/genetlink.c:745 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x463/0x6b0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x7b0/0xcb0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:639 [inline] sock_sendmsg+0xe6/0x110 net/socket.c:659 ____sys_sendmsg+0x603/0x980 net/socket.c:2330 ___sys_sendmsg+0xe4/0x160 net/socket.c:2384 __sys_sendmsg+0xd9/0x180 net/socket.c:2417 __do_sys_sendmsg net/socket.c:2426 [inline] __se_sys_sendmsg net/socket.c:2424 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2424 do_syscall_64+0xd0/0x600 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411231 Code: 01 4c 89 54 24 28 e9 6f fa ff ff 49 8b 7c 24 70 8b 35 43 c4 24 00 ff 15 ed 83 24 00 85 c0 0f 85 b3 fe ff ff 49 8b 7c 24 70 be <20> 13 41 00 ff 15 dd 83 24 00 85 c0 0f 85 9b fe ff ff 49 8b 7c 24 RSP: 002b:00007f1e41b029c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000411231 RDX: 0000000000000000 RSI: 00007f1e41b02a00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 00007f1e41b029d0 R09: 000000000072bf00 R10: ffffffffffffffff R11: 0000000000000293 R12: 00007f1e41b02a40 R13: 00000000004cc538 R14: 00000000004d9a08 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/752: #0: ffffffff8839bd00 (rcu_read_lock){....}, at: debug_show_all_locks+0x5b/0x275 kernel/locking/lockdep.c:5333 1 lock held by rsyslogd/6118: #0: ffff8881d1ee1860 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xa3/0xc0 fs/file.c:801 2 locks held by getty/6240: #0: ffff8881bfc11090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90004cd52e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x17d0 drivers/tty/n_tty.c:2156 2 locks held by getty/6241: #0: ffff8881c1cce090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90004d052e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x17d0 drivers/tty/n_tty.c:2156 2 locks held by getty/6242: #0: ffff8881c3af5090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90004cdd2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x17d0 drivers/tty/n_tty.c:2156 2 locks held by getty/6243: #0: ffff8881c2784090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90004ce52e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x17d0 drivers/tty/n_tty.c:2156 2 locks held by getty/6244: #0: ffff8881bc67e090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90004cf12e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x17d0 drivers/tty/n_tty.c:2156 2 locks held by getty/6245: #0: ffff8881c3871090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90004d012e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x17d0 drivers/tty/n_tty.c:2156 2 locks held by getty/6246: #0: ffff8881cf58f090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90004ccd2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x17d0 drivers/tty/n_tty.c:2156 2 locks held by syz-executor1/21377: #0: ffffffff88d6ad68 (cb_lock){++++}, at: ctrl_getfamily+0x2b2/0x400 net/netlink/genetlink.c:980 #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: ctrl_getfamily+0x2c0/0x400 net/netlink/genetlink.c:981 3 locks held by syz-executor1/21390: 2 locks held by syz-executor2/21385: #0: ffffffff88d6ad68 (cb_lock){++++}, at: ctrl_getfamily+0x2b2/0x400 net/netlink/genetlink.c:980 #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: ctrl_getfamily+0x2c0/0x400 net/netlink/genetlink.c:981 2 locks held by syz-executor2/21402: #0: ffffffff88d6ad68 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor2/21408: #0: ffffffff88d6ad68 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor2/21417: #0: ffffffff88d6ad68 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor3/21400: #0: ffffffff88d6ad68 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor3/21409: #0: ffffffff88d6ad68 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor3/21413: #0: ffffffff88d6ad68 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor3/21419: #0: ffffffff88d6ad68 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor4/21404: #0: ffffffff88d6ad68 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor4/21410: #0: ffffffff88d6ad68 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor4/21414: #0: ffffffff88d6ad68 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor4/21421: #0: ffffffff88d6ad68 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor5/21407: #0: ffffffff88d6ad68 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor5/21412: #0: ffffffff88d6ad68 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor5/21416: #0: ffffffff88d6ad68 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor5/21425: #0: ffffffff88d6ad68 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor0/21406: #0: ffffffff88d6ad68 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor0/21411: #0: ffffffff88d6ad68 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor0/21415: #0: ffffffff88d6ad68 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor0/21423: #0: ffffffff88d6ad68 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d6ae20 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 752 Comm: khungtaskd Not tainted 5.5.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x12d/0x187 lib/dump_stack.c:118 nmi_cpu_backtrace.cold.7+0x4b/0x84 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x18b/0x1b7 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline] watchdog+0x611/0xc50 kernel/hung_task.c:289 kthread+0x334/0x3f0 kernel/kthread.c:255 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 21390 Comm: syz-executor1 Not tainted 5.5.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:tipc_nl_publ_dump+0x289/0xca0 net/tipc/socket.c:3684 Code: 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 ce 09 00 00 41 8b 47 04 89 85 9c fe ff ff 31 c0 45 85 ed 74 48 <48> ba 00 00 00 00 00 fc ff df 48 03 95 a0 fe ff ff 48 c7 02 00 00 RSP: 0018:ffff8881d75a6d90 EFLAGS: 00000246 RAX: 00000000ffffffea RBX: ffff8881bb74b480 RCX: 0000000000000000 RDX: 1ffffffff1065b8b RSI: ffffffff8839bd00 RDI: 0000000000000286 RBP: ffff8881d75a6f38 R08: 0000000000000003 R09: ffff8881da27e950 R10: fffffbfff11ef780 R11: ffffffff88f7bc07 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8881b51e0018 FS: 00007ff5bc323700(0000) GS:ffff8881db000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000440 CR3: 00000001c030d000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __tipc_nl_compat_dumpit.isra.11+0x327/0xc10 net/tipc/netlink_compat.c:224 tipc_nl_compat_publ_dump net/tipc/netlink_compat.c:1022 [inline] tipc_nl_compat_sk_dump+0x4ed/0x990 net/tipc/netlink_compat.c:1074 __tipc_nl_compat_dumpit.isra.11+0x44c/0xc10 net/tipc/netlink_compat.c:235 tipc_nl_compat_dumpit+0x1e6/0x4c0 net/tipc/netlink_compat.c:308 tipc_nl_compat_handle net/tipc/netlink_compat.c:1248 [inline] tipc_nl_compat_recv+0x45a/0xa70 net/tipc/netlink_compat.c:1311 genl_family_rcv_msg_doit net/netlink/genetlink.c:672 [inline] genl_family_rcv_msg net/netlink/genetlink.c:717 [inline] genl_rcv_msg+0x5e1/0x10f0 net/netlink/genetlink.c:734 netlink_rcv_skb+0x13f/0x380 net/netlink/af_netlink.c:2477 genl_rcv+0x23/0x40 net/netlink/genetlink.c:745 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x463/0x6b0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x7b0/0xcb0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:639 [inline] sock_sendmsg+0xe6/0x110 net/socket.c:659 ____sys_sendmsg+0x603/0x980 net/socket.c:2330 ___sys_sendmsg+0xe4/0x160 net/socket.c:2384 __sys_sendmsg+0xd9/0x180 net/socket.c:2417 __do_sys_sendmsg net/socket.c:2426 [inline] __se_sys_sendmsg net/socket.c:2424 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2424 do_syscall_64+0xd0/0x600 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4577a9 Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ff5bc322c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004577a9 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000005 RBP: 000000000072c040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff5bc3236d4 R13: 00000000004c4211 R14: 00000000004d70f8 R15: 00000000ffffffff