INFO: task syz-executor3:25511 blocked for more than 143 seconds. Not tainted 5.5.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor3 D27632 25511 6167 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:00007f4a064a49c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000411231 RDX: 0000000000000000 RSI: 00007f4a064a4a00 RDI: 0000000000000007 RBP: 0000000000000007 R08: 00007f4a064a49d0 R09: 000000000072bf00 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f4a064a4a40 R13: 00000000004cc538 R14: 00000000004d9a08 R15: 00000000ffffffff INFO: task syz-executor1:25532 blocked for more than 143 seconds. Not tainted 5.5.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor1 D27632 25532 6169 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:00007f2f99f7f9c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000411231 RDX: 0000000000000000 RSI: 00007f2f99f7fa00 RDI: 0000000000000006 RBP: 0000000000000006 R08: 00007f2f99f7f9d0 R09: 000000000072bfa0 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f2f99f7fa40 R13: 00000000004cc538 R14: 00000000004d9a08 R15: 00000000ffffffff INFO: task syz-executor5:25516 blocked for more than 143 seconds. Not tainted 5.5.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D27632 25516 6171 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:00007f8b787279c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000411231 RDX: 0000000000000000 RSI: 00007f8b78727a00 RDI: 0000000000000007 RBP: 0000000000000007 R08: 00007f8b787279d0 R09: 000000000072bf00 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f8b78727a40 R13: 00000000004cc538 R14: 00000000004d9a08 R15: 00000000ffffffff INFO: task syz-executor4:25528 blocked for more than 144 seconds. Not tainted 5.5.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor4 D27648 25528 6178 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:00007fc2764f09c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000411231 RDX: 0000000000000000 RSI: 00007fc2764f0a00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 00007fc2764f09d0 R09: 000000000072bf00 R10: ffffffffffffffff R11: 0000000000000293 R12: 00007fc2764f0a40 R13: 00000000004cc538 R14: 00000000004d9a08 R15: 00000000ffffffff INFO: task syz-executor4:25544 blocked for more than 144 seconds. Not tainted 5.5.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor4 D28536 25544 6178 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:00007fc2764cf9c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fc2764cfa58 RCX: 0000000000411231 RDX: 0000000000000000 RSI: 00007fc2764cfa00 RDI: 0000000000000006 RBP: 0000000000000006 R08: 000000000000000b R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000293 R12: 00007fc2764cfa40 R13: 00000000004cc510 R14: 00000000004d99f0 R15: 00000000ffffffff INFO: task syz-executor2:25543 blocked for more than 144 seconds. Not tainted 5.5.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor2 D28536 25543 6166 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:00007fda9596c9c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000411231 RDX: 0000000000000000 RSI: 00007fda9596ca00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 00007fda9596c9d0 R09: 000000000072bf00 R10: 0000000000000000 R11: 0000000000000293 R12: 00007fda9596ca40 R13: 00000000004cc538 R14: 00000000004d9a08 R15: 00000000ffffffff INFO: task syz-executor2:25548 blocked for more than 145 seconds. Not tainted 5.5.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor2 D28536 25548 6166 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:00007fda9594b9c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fda9594ba58 RCX: 0000000000411231 RDX: 0000000000000000 RSI: 00007fda9594ba00 RDI: 0000000000000006 RBP: 0000000000000006 R08: 000000000000000b R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000293 R12: 00007fda9594ba40 R13: 00000000004cc510 R14: 00000000004d99f0 R15: 00000000ffffffff INFO: task syz-executor0:25547 blocked for more than 145 seconds. Not tainted 5.5.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D28536 25547 6177 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:00007eff5e8879c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000411231 RDX: 0000000000000000 RSI: 00007eff5e887a00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 00007eff5e8879d0 R09: 000000000072bf00 R10: 0000000000000000 R11: 0000000000000293 R12: 00007eff5e887a40 R13: 00000000004cc538 R14: 00000000004d9a08 R15: 00000000ffffffff INFO: task syz-executor0:25550 blocked for more than 145 seconds. Not tainted 5.5.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D28536 25550 6177 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:00007eff5e8669c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007eff5e866a58 RCX: 0000000000411231 RDX: 0000000000000000 RSI: 00007eff5e866a00 RDI: 0000000000000006 RBP: 0000000000000006 R08: 000000000000000b R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000293 R12: 00007eff5e866a40 R13: 00000000004cc510 R14: 00000000004d99f0 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/965: #0: ffffffff8839bc40 (rcu_read_lock){....}, at: debug_show_all_locks+0x5b/0x275 kernel/locking/lockdep.c:5334 1 lock held by rsyslogd/5923: #0: ffff8881c442b860 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xa3/0xc0 fs/file.c:801 2 locks held by getty/6045: #0: ffff8881cdb30090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90004cb12e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x17d0 drivers/tty/n_tty.c:2156 2 locks held by getty/6046: #0: ffff8881baf5d090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90004cb92e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x17d0 drivers/tty/n_tty.c:2156 2 locks held by getty/6047: #0: ffff8881bdfab090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90004cd12e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x17d0 drivers/tty/n_tty.c:2156 2 locks held by getty/6048: #0: ffff8881c2fde090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90004cc12e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x17d0 drivers/tty/n_tty.c:2156 2 locks held by getty/6049: #0: ffff8881bb045090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90004cd92e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x17d0 drivers/tty/n_tty.c:2156 2 locks held by getty/6050: #0: ffff8881bcebe090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90004cc92e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x17d0 drivers/tty/n_tty.c:2156 2 locks held by getty/6051: #0: ffff8881c6142090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90004a292e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x1ee/0x17d0 drivers/tty/n_tty.c:2156 2 locks held by syz-executor3/25511: #0: ffffffff88d67668 (cb_lock){++++}, at: ctrl_getfamily+0x2b2/0x400 net/netlink/genetlink.c:980 #1: ffffffff88d67720 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d67720 (genl_mutex){+.+.}, at: ctrl_getfamily+0x2c0/0x400 net/netlink/genetlink.c:981 2 locks held by syz-executor1/25532: #0: ffffffff88d67668 (cb_lock){++++}, at: ctrl_getfamily+0x2b2/0x400 net/netlink/genetlink.c:980 #1: ffffffff88d67720 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d67720 (genl_mutex){+.+.}, at: ctrl_getfamily+0x2c0/0x400 net/netlink/genetlink.c:981 2 locks held by syz-executor5/25516: #0: ffffffff88d67668 (cb_lock){++++}, at: ctrl_getfamily+0x2b2/0x400 net/netlink/genetlink.c:980 #1: ffffffff88d67720 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d67720 (genl_mutex){+.+.}, at: ctrl_getfamily+0x2c0/0x400 net/netlink/genetlink.c:981 3 locks held by syz-executor5/25539: 2 locks held by syz-executor4/25528: #0: ffffffff88d67668 (cb_lock){++++}, at: ctrl_getfamily+0x2b2/0x400 net/netlink/genetlink.c:980 #1: ffffffff88d67720 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d67720 (genl_mutex){+.+.}, at: ctrl_getfamily+0x2c0/0x400 net/netlink/genetlink.c:981 2 locks held by syz-executor4/25544: #0: ffffffff88d67668 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d67720 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d67720 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor4/25549: #0: ffffffff88d67668 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d67720 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d67720 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor4/25553: #0: ffffffff88d67668 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d67720 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d67720 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor2/25543: #0: ffffffff88d67668 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d67720 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d67720 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor2/25548: #0: ffffffff88d67668 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d67720 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d67720 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor2/25551: #0: ffffffff88d67668 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d67720 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d67720 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor2/25555: #0: ffffffff88d67668 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d67720 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d67720 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor0/25547: #0: ffffffff88d67668 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d67720 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d67720 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor0/25550: #0: ffffffff88d67668 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d67720 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d67720 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor0/25552: #0: ffffffff88d67668 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d67720 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d67720 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 2 locks held by syz-executor0/25557: #0: ffffffff88d67668 (cb_lock){++++}, at: genl_rcv+0x14/0x40 net/netlink/genetlink.c:744 #1: ffffffff88d67720 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff88d67720 (genl_mutex){+.+.}, at: genl_rcv_msg+0x66e/0x10f0 net/netlink/genetlink.c:732 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 965 Comm: khungtaskd Not tainted 5.5.0-rc2-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: 25539 Comm: syz-executor5 Not tainted 5.5.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:arch_local_save_flags arch/x86/include/asm/paravirt.h:747 [inline] RIP: 0010:arch_local_irq_save arch/x86/include/asm/paravirt.h:769 [inline] RIP: 0010:lock_acquire+0x9d/0x410 kernel/locking/lockdep.c:4480 Code: b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 34 03 00 00 48 83 3d 6b 85 e0 06 00 0f 84 c1 02 00 00 9c 58 <0f> 1f 44 00 00 48 c7 c7 20 df 32 88 48 89 45 c8 48 b8 00 00 00 00 RSP: 0018:ffff8881bcd4ec10 EFLAGS: 00000286 RAX: 0000000000000286 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 1ffffffff1065be2 RSI: 0000000000000000 RDI: ffffffff8832df10 RBP: ffff8881bcd4ec58 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: 1ffff110379a9d9b R12: 0000000000000000 R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f8b786e6700(0000) GS:ffff8881db000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 00000001b09e1000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_lock_acquire include/linux/rcupdate.h:208 [inline] rcu_read_lock include/linux/rcupdate.h:617 [inline] net_generic include/net/netns/generic.h:44 [inline] tipc_sk_lookup+0xdd/0x8c0 net/tipc/socket.c:2885 tipc_nl_publ_dump+0x2df/0xca0 net/tipc/socket.c:3699 __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:00007f8b786e5c78 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: 00007f8b786e66d4 R13: 00000000004c4211 R14: 00000000004d70f8 R15: 00000000ffffffff