INFO: task syz-executor.2:8025 blocked for more than 143 seconds. Not tainted 5.1.0-rc1+ #34 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D26800 8025 7782 0x00000004 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3620 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 netlink_rcv_skb+0x17a/0x460 net/netlink/af_netlink.c:2485 genl_rcv+0x29/0x40 net/netlink/genetlink.c:637 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x536/0x720 net/netlink/af_netlink.c:1336 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1925 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 ___sys_sendmsg+0x806/0x930 net/socket.c:2137 __sys_sendmsg+0x105/0x1d0 net/socket.c:2175 __do_sys_sendmsg net/socket.c:2184 [inline] __se_sys_sendmsg net/socket.c:2182 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2182 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4120e1 Code: 65 00 31 d2 be 53 25 44 00 bf 52 37 44 00 ff 15 a5 75 24 00 b9 e0 96 65 00 31 d2 be d2 31 44 00 bf 52 37 44 00 ff 15 8e 75 24 <00> 48 8b 3d 87 b5 24 00 e8 92 8e ff ff 31 c0 48 83 c4 08 c3 66 66 RSP: 002b:00007fd9d70919c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fd9d7091a58 RCX: 00000000004120e1 RDX: 0000000000000000 RSI: 00007fd9d7091a00 RDI: 0000000000000007 RBP: 0000000000000007 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007fd9d7091a40 R13: 00000000004cdae0 R14: 00000000004dbe60 R15: 00000000ffffffff INFO: task syz-executor.2:8035 blocked for more than 143 seconds. Not tainted 5.1.0-rc1+ #34 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28808 8035 7782 0x00000004 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3620 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 netlink_rcv_skb+0x17a/0x460 net/netlink/af_netlink.c:2485 genl_rcv+0x29/0x40 net/netlink/genetlink.c:637 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x536/0x720 net/netlink/af_netlink.c:1336 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1925 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 ___sys_sendmsg+0x806/0x930 net/socket.c:2137 __sys_sendmsg+0x105/0x1d0 net/socket.c:2175 __do_sys_sendmsg net/socket.c:2184 [inline] __se_sys_sendmsg net/socket.c:2182 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2182 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458209 Code: Bad RIP value. RSP: 002b:00007fd9d7070c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458209 RDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000006 RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd9d70716d4 R13: 00000000004cbcb8 R14: 00000000004d9400 R15: 00000000ffffffff INFO: task syz-executor.5:8031 blocked for more than 144 seconds. Not tainted 5.1.0-rc1+ #34 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D27752 8031 7780 0x00000004 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3620 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 netlink_rcv_skb+0x17a/0x460 net/netlink/af_netlink.c:2485 genl_rcv+0x29/0x40 net/netlink/genetlink.c:637 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x536/0x720 net/netlink/af_netlink.c:1336 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1925 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 ___sys_sendmsg+0x806/0x930 net/socket.c:2137 __sys_sendmsg+0x105/0x1d0 net/socket.c:2175 __do_sys_sendmsg net/socket.c:2184 [inline] __se_sys_sendmsg net/socket.c:2182 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2182 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458209 Code: Bad RIP value. RSP: 002b:00007f0f0f6f2c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458209 RDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000004 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0f0f6f36d4 R13: 00000000004cbcb8 R14: 00000000004d9400 R15: 00000000ffffffff INFO: task syz-executor.5:8041 blocked for more than 144 seconds. Not tainted 5.1.0-rc1+ #34 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D28808 8041 7780 0x00000004 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3620 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 netlink_rcv_skb+0x17a/0x460 net/netlink/af_netlink.c:2485 genl_rcv+0x29/0x40 net/netlink/genetlink.c:637 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x536/0x720 net/netlink/af_netlink.c:1336 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1925 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 ___sys_sendmsg+0x806/0x930 net/socket.c:2137 __sys_sendmsg+0x105/0x1d0 net/socket.c:2175 __do_sys_sendmsg net/socket.c:2184 [inline] __se_sys_sendmsg net/socket.c:2182 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2182 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4120e1 Code: 65 00 31 d2 be 53 25 44 00 bf 52 37 44 00 ff 15 a5 75 24 00 b9 e0 96 65 00 31 d2 be d2 31 44 00 bf 52 37 44 00 ff 15 8e 75 24 <00> 48 8b 3d 87 b5 24 00 e8 92 8e ff ff 31 c0 48 83 c4 08 c3 66 66 RSP: 002b:00007f0f0f6d19c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f0f0f6d1a58 RCX: 00000000004120e1 RDX: 0000000000000000 RSI: 00007f0f0f6d1a00 RDI: 0000000000000007 RBP: 0000000000000007 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f0f0f6d1a40 R13: 00000000004cdae0 R14: 00000000004dbe60 R15: 00000000ffffffff INFO: task syz-executor.5:8042 blocked for more than 145 seconds. Not tainted 5.1.0-rc1+ #34 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D28808 8042 7780 0x00000004 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3620 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 netlink_rcv_skb+0x17a/0x460 net/netlink/af_netlink.c:2485 genl_rcv+0x29/0x40 net/netlink/genetlink.c:637 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x536/0x720 net/netlink/af_netlink.c:1336 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1925 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 ___sys_sendmsg+0x806/0x930 net/socket.c:2137 __sys_sendmsg+0x105/0x1d0 net/socket.c:2175 __do_sys_sendmsg net/socket.c:2184 [inline] __se_sys_sendmsg net/socket.c:2182 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2182 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458209 Code: Bad RIP value. RSP: 002b:00007f0f0f6b0c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458209 RDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000006 RBP: 000000000073c040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0f0f6b16d4 R13: 00000000004cbcb8 R14: 00000000004d9400 R15: 00000000ffffffff INFO: task syz-executor.3:8028 blocked for more than 145 seconds. Not tainted 5.1.0-rc1+ #34 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D28808 8028 7776 0x00000004 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3620 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 netlink_rcv_skb+0x17a/0x460 net/netlink/af_netlink.c:2485 genl_rcv+0x29/0x40 net/netlink/genetlink.c:637 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x536/0x720 net/netlink/af_netlink.c:1336 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1925 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 ___sys_sendmsg+0x806/0x930 net/socket.c:2137 __sys_sendmsg+0x105/0x1d0 net/socket.c:2175 __do_sys_sendmsg net/socket.c:2184 [inline] __se_sys_sendmsg net/socket.c:2182 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2182 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4120e1 Code: 65 00 31 d2 be 53 25 44 00 bf 52 37 44 00 ff 15 a5 75 24 00 b9 e0 96 65 00 31 d2 be d2 31 44 00 bf 52 37 44 00 ff 15 8e 75 24 <00> 48 8b 3d 87 b5 24 00 e8 92 8e ff ff 31 c0 48 83 c4 08 c3 66 66 RSP: 002b:00007f90ee6b49c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f90ee6b4a58 RCX: 00000000004120e1 RDX: 0000000000000000 RSI: 00007f90ee6b4a00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f90ee6b4a40 R13: 00000000004cdae0 R14: 00000000004dbe60 R15: 00000000ffffffff INFO: task syz-executor.3:8037 blocked for more than 146 seconds. Not tainted 5.1.0-rc1+ #34 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D28056 8037 7776 0x00000004 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3620 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 netlink_rcv_skb+0x17a/0x460 net/netlink/af_netlink.c:2485 genl_rcv+0x29/0x40 net/netlink/genetlink.c:637 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x536/0x720 net/netlink/af_netlink.c:1336 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1925 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 ___sys_sendmsg+0x806/0x930 net/socket.c:2137 __sys_sendmsg+0x105/0x1d0 net/socket.c:2175 __do_sys_sendmsg net/socket.c:2184 [inline] __se_sys_sendmsg net/socket.c:2182 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2182 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4120e1 Code: 65 00 31 d2 be 53 25 44 00 bf 52 37 44 00 ff 15 a5 75 24 00 b9 e0 96 65 00 31 d2 be d2 31 44 00 bf 52 37 44 00 ff 15 8e 75 24 <00> 48 8b 3d 87 b5 24 00 e8 92 8e ff ff 31 c0 48 83 c4 08 c3 66 66 RSP: 002b:00007f90ee6939c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f90ee693a58 RCX: 00000000004120e1 RDX: 0000000000000000 RSI: 00007f90ee693a00 RDI: 0000000000000008 RBP: 0000000000000008 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f90ee693a40 R13: 00000000004cdae0 R14: 00000000004dbe60 R15: 00000000ffffffff INFO: task syz-executor.1:8033 blocked for more than 147 seconds. Not tainted 5.1.0-rc1+ #34 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28808 8033 7783 0x00000004 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3620 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 netlink_rcv_skb+0x17a/0x460 net/netlink/af_netlink.c:2485 genl_rcv+0x29/0x40 net/netlink/genetlink.c:637 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x536/0x720 net/netlink/af_netlink.c:1336 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1925 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 ___sys_sendmsg+0x806/0x930 net/socket.c:2137 __sys_sendmsg+0x105/0x1d0 net/socket.c:2175 __do_sys_sendmsg net/socket.c:2184 [inline] __se_sys_sendmsg net/socket.c:2182 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2182 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4120e1 Code: Bad RIP value. RSP: 002b:00007f27d95649c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f27d9564a58 RCX: 00000000004120e1 RDX: 0000000000000000 RSI: 00007f27d9564a00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f27d9564a40 R13: 00000000004cdae0 R14: 00000000004dbe60 R15: 00000000ffffffff INFO: task syz-executor.1:8039 blocked for more than 147 seconds. Not tainted 5.1.0-rc1+ #34 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28056 8039 7783 0x00000004 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3620 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 netlink_rcv_skb+0x17a/0x460 net/netlink/af_netlink.c:2485 genl_rcv+0x29/0x40 net/netlink/genetlink.c:637 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x536/0x720 net/netlink/af_netlink.c:1336 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1925 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 ___sys_sendmsg+0x806/0x930 net/socket.c:2137 __sys_sendmsg+0x105/0x1d0 net/socket.c:2175 __do_sys_sendmsg net/socket.c:2184 [inline] __se_sys_sendmsg net/socket.c:2182 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2182 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4120e1 Code: 65 00 31 d2 be 53 25 44 00 bf 52 37 44 00 ff 15 a5 75 24 00 b9 e0 96 65 00 31 d2 be d2 31 44 00 bf 52 37 44 00 ff 15 8e 75 24 <00> 48 8b 3d 87 b5 24 00 e8 92 8e ff ff 31 c0 48 83 c4 08 c3 66 66 RSP: 002b:00007f27d95439c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f27d9543a58 RCX: 00000000004120e1 RDX: 0000000000000000 RSI: 00007f27d9543a00 RDI: 0000000000000008 RBP: 0000000000000008 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f27d9543a40 R13: 00000000004cdae0 R14: 00000000004dbe60 R15: 00000000ffffffff INFO: task syz-executor.4:8038 blocked for more than 148 seconds. Not tainted 5.1.0-rc1+ #34 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D28808 8038 7778 0x00000004 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3620 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 netlink_rcv_skb+0x17a/0x460 net/netlink/af_netlink.c:2485 genl_rcv+0x29/0x40 net/netlink/genetlink.c:637 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x536/0x720 net/netlink/af_netlink.c:1336 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1925 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 ___sys_sendmsg+0x806/0x930 net/socket.c:2137 __sys_sendmsg+0x105/0x1d0 net/socket.c:2175 __do_sys_sendmsg net/socket.c:2184 [inline] __se_sys_sendmsg net/socket.c:2182 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2182 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4120e1 Code: 65 00 31 d2 be 53 25 44 00 bf 52 37 44 00 ff 15 a5 75 24 00 b9 e0 96 65 00 31 d2 be d2 31 44 00 bf 52 37 44 00 ff 15 8e 75 24 <00> 48 8b 3d 87 b5 24 00 e8 92 8e ff ff 31 c0 48 83 c4 08 c3 66 66 RSP: 002b:00007f7d12d1d9c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f7d12d1da58 RCX: 00000000004120e1 RDX: 0000000000000000 RSI: 00007f7d12d1da00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000004 R11: 0000000000000293 R12: 00007f7d12d1da40 R13: 00000000004cdae0 R14: 00000000004dbe60 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1042: #0: 0000000077320f31 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:5061 1 lock held by rsyslogd/7642: #0: 000000008313b96a (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:801 2 locks held by getty/7732: #0: 0000000020f5eb32 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000919fd427 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/7733: #0: 00000000e4154b5f (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000b540df7d (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/7734: #0: 00000000f03dde7a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000122e2c7e (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/7735: #0: 00000000327773f5 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000d782421f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/7736: #0: 000000005b87733d (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 0000000002d767f2 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/7737: #0: 00000000264ad94a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000004230163d (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/7738: #0: 000000009795e94c (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000815c4568 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 3 locks held by syz-executor.0/8024: 2 locks held by syz-executor.2/8025: #0: 0000000036e70b4b (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:636 #1: 00000000edb9e0a9 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000edb9e0a9 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 2 locks held by syz-executor.2/8035: #0: 0000000036e70b4b (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:636 #1: 00000000edb9e0a9 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000edb9e0a9 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 2 locks held by syz-executor.5/8031: #0: 0000000036e70b4b (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:636 #1: 00000000edb9e0a9 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000edb9e0a9 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 2 locks held by syz-executor.5/8041: #0: 0000000036e70b4b (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:636 #1: 00000000edb9e0a9 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000edb9e0a9 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 2 locks held by syz-executor.5/8042: #0: 0000000036e70b4b (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:636 #1: 00000000edb9e0a9 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000edb9e0a9 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 2 locks held by syz-executor.3/8028: #0: 0000000036e70b4b (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:636 #1: 00000000edb9e0a9 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000edb9e0a9 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 2 locks held by syz-executor.3/8037: #0: 0000000036e70b4b (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:636 #1: 00000000edb9e0a9 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000edb9e0a9 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 2 locks held by syz-executor.1/8033: #0: 0000000036e70b4b (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:636 #1: 00000000edb9e0a9 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000edb9e0a9 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 2 locks held by syz-executor.1/8039: #0: 0000000036e70b4b (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:636 #1: 00000000edb9e0a9 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000edb9e0a9 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 2 locks held by syz-executor.4/8038: #0: 0000000036e70b4b (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:636 #1: 00000000edb9e0a9 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000edb9e0a9 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 2 locks held by syz-executor.4/8040: #0: 0000000036e70b4b (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:636 #1: 00000000edb9e0a9 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000edb9e0a9 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1042 Comm: khungtaskd Not tainted 5.1.0-rc1+ #34 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+0x172/0x1f0 lib/dump_stack.c:113 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1be/0x236 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:204 [inline] watchdog+0x9b7/0xec0 kernel/hung_task.c:288 kthread+0x357/0x430 kernel/kthread.c:253 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 0 to CPUs 1: