INFO: task syz-executor.5:14048 blocked for more than 143 seconds. Not tainted 5.3.0-rc8+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D27968 14048 8915 0x00004004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x755/0x1580 kernel/sched/core.c:3880 schedule+0xd9/0x260 kernel/sched/core.c:3947 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4006 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 ovs_lock net/openvswitch/datapath.c:105 [inline] ovs_dp_cmd_new+0x5d9/0xe30 net/openvswitch/datapath.c:1642 genl_family_rcv_msg+0x74b/0xf90 net/netlink/genetlink.c:629 genl_rcv_msg+0xca/0x170 net/netlink/genetlink.c:654 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x8a5/0xd60 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:657 ___sys_sendmsg+0x803/0x920 net/socket.c:2311 __sys_sendmsg+0x105/0x1d0 net/socket.c:2356 __do_sys_sendmsg net/socket.c:2365 [inline] __se_sys_sendmsg net/socket.c:2363 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2363 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4598e9 Code: 24 18 0f b6 05 2f d1 3b 01 3c 01 76 0a 48 8b 6c 24 18 48 83 c4 20 c3 75 07 e8 63 08 fd ff 0f 0b c6 05 11 d1 3b 01 01 48 b8 00 <00> 00 00 00 00 f0 7f 48 89 04 24 e8 a7 dd fa ff f2 0f 10 44 24 08 RSP: 002b:00007f7de7115c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000006 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7de71166d4 R13: 00000000004c7777 R14: 00000000004dcfd8 R15: 00000000ffffffff INFO: task syz-executor.5:14049 blocked for more than 143 seconds. Not tainted 5.3.0-rc8+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D27968 14049 8915 0x00004004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x755/0x1580 kernel/sched/core.c:3880 schedule+0xd9/0x260 kernel/sched/core.c:3947 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4006 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 ovs_lock net/openvswitch/datapath.c:105 [inline] ovs_dp_cmd_new+0x5d9/0xe30 net/openvswitch/datapath.c:1642 genl_family_rcv_msg+0x74b/0xf90 net/netlink/genetlink.c:629 genl_rcv_msg+0xca/0x170 net/netlink/genetlink.c:654 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x8a5/0xd60 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:657 ___sys_sendmsg+0x803/0x920 net/socket.c:2311 __sys_sendmsg+0x105/0x1d0 net/socket.c:2356 __do_sys_sendmsg net/socket.c:2365 [inline] __se_sys_sendmsg net/socket.c:2363 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2363 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4598e9 Code: 24 18 0f b6 05 2f d1 3b 01 3c 01 76 0a 48 8b 6c 24 18 48 83 c4 20 c3 75 07 e8 63 08 fd ff 0f 0b c6 05 11 d1 3b 01 01 48 b8 00 <00> 00 00 00 00 f0 7f 48 89 04 24 e8 a7 dd fa ff f2 0f 10 44 24 08 RSP: 002b:00007f7de70f4c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000007 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7de70f56d4 R13: 00000000004c7777 R14: 00000000004dcfd8 R15: 00000000ffffffff INFO: task syz-executor.5:14051 blocked for more than 144 seconds. Not tainted 5.3.0-rc8+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D28216 14051 8915 0x00000004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x755/0x1580 kernel/sched/core.c:3880 schedule+0xd9/0x260 kernel/sched/core.c:3947 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4006 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 ovs_lock net/openvswitch/datapath.c:105 [inline] ovs_dp_cmd_set+0x55/0x2d0 net/openvswitch/datapath.c:1759 genl_family_rcv_msg+0x74b/0xf90 net/netlink/genetlink.c:629 genl_rcv_msg+0xca/0x170 net/netlink/genetlink.c:654 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x8a5/0xd60 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:657 ___sys_sendmsg+0x803/0x920 net/socket.c:2311 __sys_sendmsg+0x105/0x1d0 net/socket.c:2356 __do_sys_sendmsg net/socket.c:2365 [inline] __se_sys_sendmsg net/socket.c:2363 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2363 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4598e9 Code: 24 18 0f b6 05 2f d1 3b 01 3c 01 76 0a 48 8b 6c 24 18 48 83 c4 20 c3 75 07 e8 63 08 fd ff 0f 0b c6 05 11 d1 3b 01 01 48 b8 00 <00> 00 00 00 00 f0 7f 48 89 04 24 e8 a7 dd fa ff f2 0f 10 44 24 08 RSP: 002b:00007f7de70d3c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7de70d46d4 R13: 00000000004c7777 R14: 00000000004dcfd8 R15: 00000000ffffffff INFO: task syz-executor.5:14065 blocked for more than 144 seconds. Not tainted 5.3.0-rc8+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D27968 14065 8915 0x00000004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x755/0x1580 kernel/sched/core.c:3880 schedule+0xd9/0x260 kernel/sched/core.c:3947 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4006 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 ovs_lock net/openvswitch/datapath.c:105 [inline] ovs_dp_cmd_new+0x5d9/0xe30 net/openvswitch/datapath.c:1642 genl_family_rcv_msg+0x74b/0xf90 net/netlink/genetlink.c:629 genl_rcv_msg+0xca/0x170 net/netlink/genetlink.c:654 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x8a5/0xd60 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:657 ___sys_sendmsg+0x803/0x920 net/socket.c:2311 __sys_sendmsg+0x105/0x1d0 net/socket.c:2356 __do_sys_sendmsg net/socket.c:2365 [inline] __se_sys_sendmsg net/socket.c:2363 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2363 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4598e9 Code: Bad RIP value. RSP: 002b:00007f7de70b2c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000007 RBP: 000000000075c118 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7de70b36d4 R13: 00000000004c7777 R14: 00000000004dcfd8 R15: 00000000ffffffff INFO: task syz-executor.5:14066 blocked for more than 145 seconds. Not tainted 5.3.0-rc8+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D27968 14066 8915 0x00000004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x755/0x1580 kernel/sched/core.c:3880 schedule+0xd9/0x260 kernel/sched/core.c:3947 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4006 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 ovs_lock net/openvswitch/datapath.c:105 [inline] ovs_dp_cmd_new+0x5d9/0xe30 net/openvswitch/datapath.c:1642 genl_family_rcv_msg+0x74b/0xf90 net/netlink/genetlink.c:629 genl_rcv_msg+0xca/0x170 net/netlink/genetlink.c:654 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x8a5/0xd60 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:657 ___sys_sendmsg+0x803/0x920 net/socket.c:2311 __sys_sendmsg+0x105/0x1d0 net/socket.c:2356 __do_sys_sendmsg net/socket.c:2365 [inline] __se_sys_sendmsg net/socket.c:2363 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2363 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4598e9 Code: Bad RIP value. RSP: 002b:00007f7de7091c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000006 RBP: 000000000075c1c0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7de70926d4 R13: 00000000004c7777 R14: 00000000004dcfd8 R15: 00000000ffffffff INFO: task syz-executor.0:14053 blocked for more than 145 seconds. Not tainted 5.3.0-rc8+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D25624 14053 8898 0x00004004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x755/0x1580 kernel/sched/core.c:3880 schedule+0xd9/0x260 kernel/sched/core.c:3947 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4006 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 ovs_lock net/openvswitch/datapath.c:105 [inline] ovs_dp_cmd_new+0x5d9/0xe30 net/openvswitch/datapath.c:1642 genl_family_rcv_msg+0x74b/0xf90 net/netlink/genetlink.c:629 genl_rcv_msg+0xca/0x170 net/netlink/genetlink.c:654 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x8a5/0xd60 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:657 ___sys_sendmsg+0x803/0x920 net/socket.c:2311 __sys_sendmsg+0x105/0x1d0 net/socket.c:2356 __do_sys_sendmsg net/socket.c:2365 [inline] __se_sys_sendmsg net/socket.c:2363 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2363 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4598e9 Code: Bad RIP value. RSP: 002b:00007f195f337c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000004 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f195f3386d4 R13: 00000000004c7777 R14: 00000000004dcfd8 R15: 00000000ffffffff INFO: task syz-executor.0:14072 blocked for more than 146 seconds. Not tainted 5.3.0-rc8+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D27968 14072 8898 0x00000004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x755/0x1580 kernel/sched/core.c:3880 schedule+0xd9/0x260 kernel/sched/core.c:3947 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4006 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 ovs_lock net/openvswitch/datapath.c:105 [inline] ovs_dp_cmd_new+0x5d9/0xe30 net/openvswitch/datapath.c:1642 genl_family_rcv_msg+0x74b/0xf90 net/netlink/genetlink.c:629 genl_rcv_msg+0xca/0x170 net/netlink/genetlink.c:654 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x8a5/0xd60 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:657 ___sys_sendmsg+0x803/0x920 net/socket.c:2311 __sys_sendmsg+0x105/0x1d0 net/socket.c:2356 __do_sys_sendmsg net/socket.c:2365 [inline] __se_sys_sendmsg net/socket.c:2363 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2363 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4598e9 Code: Bad RIP value. RSP: 002b:00007f195f2f5c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000004 RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f195f2f66d4 R13: 00000000004c7777 R14: 00000000004dcfd8 R15: 00000000ffffffff INFO: task syz-executor.2:14056 blocked for more than 146 seconds. Not tainted 5.3.0-rc8+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D25576 14056 8903 0x00004004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x755/0x1580 kernel/sched/core.c:3880 schedule+0xd9/0x260 kernel/sched/core.c:3947 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4006 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 ovs_lock net/openvswitch/datapath.c:105 [inline] ovs_dp_cmd_new+0x5d9/0xe30 net/openvswitch/datapath.c:1642 genl_family_rcv_msg+0x74b/0xf90 net/netlink/genetlink.c:629 genl_rcv_msg+0xca/0x170 net/netlink/genetlink.c:654 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x8a5/0xd60 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:657 ___sys_sendmsg+0x803/0x920 net/socket.c:2311 __sys_sendmsg+0x105/0x1d0 net/socket.c:2356 __do_sys_sendmsg net/socket.c:2365 [inline] __se_sys_sendmsg net/socket.c:2363 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2363 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4598e9 Code: Bad RIP value. RSP: 002b:00007f78bb459c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000004 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f78bb45a6d4 R13: 00000000004c7777 R14: 00000000004dcfd8 R15: 00000000ffffffff INFO: task syz-executor.2:14077 blocked for more than 146 seconds. Not tainted 5.3.0-rc8+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D27432 14077 8903 0x00000004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x755/0x1580 kernel/sched/core.c:3880 schedule+0xd9/0x260 kernel/sched/core.c:3947 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4006 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 ovs_lock net/openvswitch/datapath.c:105 [inline] ovs_dp_cmd_new+0x5d9/0xe30 net/openvswitch/datapath.c:1642 genl_family_rcv_msg+0x74b/0xf90 net/netlink/genetlink.c:629 genl_rcv_msg+0xca/0x170 net/netlink/genetlink.c:654 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x8a5/0xd60 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:657 ___sys_sendmsg+0x803/0x920 net/socket.c:2311 __sys_sendmsg+0x105/0x1d0 net/socket.c:2356 __do_sys_sendmsg net/socket.c:2365 [inline] __se_sys_sendmsg net/socket.c:2363 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2363 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4598e9 Code: Bad RIP value. RSP: 002b:00007f78bb417c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000004 RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f78bb4186d4 R13: 00000000004c7777 R14: 00000000004dcfd8 R15: 00000000ffffffff INFO: task syz-executor.3:14079 blocked for more than 147 seconds. Not tainted 5.3.0-rc8+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D27432 14079 21658 0x00004004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x755/0x1580 kernel/sched/core.c:3880 schedule+0xd9/0x260 kernel/sched/core.c:3947 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4006 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 ovs_lock net/openvswitch/datapath.c:105 [inline] ovs_dp_cmd_new+0x5d9/0xe30 net/openvswitch/datapath.c:1642 genl_family_rcv_msg+0x74b/0xf90 net/netlink/genetlink.c:629 genl_rcv_msg+0xca/0x170 net/netlink/genetlink.c:654 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x8a5/0xd60 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:657 ___sys_sendmsg+0x803/0x920 net/socket.c:2311 __sys_sendmsg+0x105/0x1d0 net/socket.c:2356 __do_sys_sendmsg net/socket.c:2365 [inline] __se_sys_sendmsg net/socket.c:2363 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2363 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4598e9 Code: Bad RIP value. RSP: 002b:00007fbfc8536c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000005 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbfc85376d4 R13: 00000000004c7777 R14: 00000000004dcfd8 R15: 00000000ffffffff Showing all locks held in the system: 5 locks held by kworker/u4:1/21: #0: 000000006bde7abb ((wq_completion)netns){+.+.}, at: __write_once_size include/linux/compiler.h:226 [inline] #0: 000000006bde7abb ((wq_completion)netns){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 000000006bde7abb ((wq_completion)netns){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline] #0: 000000006bde7abb ((wq_completion)netns){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline] #0: 000000006bde7abb ((wq_completion)netns){+.+.}, at: set_work_data kernel/workqueue.c:620 [inline] #0: 000000006bde7abb ((wq_completion)netns){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:647 [inline] #0: 000000006bde7abb ((wq_completion)netns){+.+.}, at: process_one_work+0x88b/0x1740 kernel/workqueue.c:2240 #1: 00000000ac0bbbbb (net_cleanup_work){+.+.}, at: process_one_work+0x8c1/0x1740 kernel/workqueue.c:2244 #2: 000000009ca97720 (pernet_ops_rwsem){++++}, at: cleanup_net+0xae/0xa60 net/core/net_namespace.c:556 #3: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_lock net/openvswitch/datapath.c:105 [inline] #3: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_exit_net+0x206/0xc30 net/openvswitch/datapath.c:2421 #4: 0000000017a5ab5c (rcu_state.barrier_mutex){+.+.}, at: rcu_barrier+0x47/0x310 kernel/rcu/tree.c:2830 1 lock held by khungtaskd/1056: #0: 000000009255f8dd (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:5256 1 lock held by rsyslogd/8770: #0: 0000000031b6872a (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:801 2 locks held by getty/8860: #0: 0000000009362ec5 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: 00000000cde2e0d6 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8861: #0: 00000000f3c77415 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: 0000000035e9e7c4 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8862: #0: 00000000b4298f3f (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: 00000000a9101bfe (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8863: #0: 00000000dd8e6088 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: 00000000dca98b4a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8864: #0: 00000000b5961e6d (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: 000000005affcc68 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8865: #0: 00000000ba3594f9 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: 00000000ca55e2ef (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8866: #0: 000000007d06dc7d (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: 000000006e149f8b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by syz-executor.5/14048: #0: 00000000884737e6 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_lock net/openvswitch/datapath.c:105 [inline] #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_dp_cmd_new+0x5d9/0xe30 net/openvswitch/datapath.c:1642 2 locks held by syz-executor.5/14049: #0: 00000000884737e6 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_lock net/openvswitch/datapath.c:105 [inline] #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_dp_cmd_new+0x5d9/0xe30 net/openvswitch/datapath.c:1642 2 locks held by syz-executor.5/14051: #0: 00000000884737e6 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_lock net/openvswitch/datapath.c:105 [inline] #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_dp_cmd_set+0x55/0x2d0 net/openvswitch/datapath.c:1759 2 locks held by syz-executor.5/14065: #0: 00000000884737e6 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_lock net/openvswitch/datapath.c:105 [inline] #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_dp_cmd_new+0x5d9/0xe30 net/openvswitch/datapath.c:1642 2 locks held by syz-executor.5/14066: #0: 00000000884737e6 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_lock net/openvswitch/datapath.c:105 [inline] #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_dp_cmd_new+0x5d9/0xe30 net/openvswitch/datapath.c:1642 2 locks held by syz-executor.0/14053: #0: 00000000884737e6 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_lock net/openvswitch/datapath.c:105 [inline] #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_dp_cmd_new+0x5d9/0xe30 net/openvswitch/datapath.c:1642 2 locks held by syz-executor.0/14072: #0: 00000000884737e6 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_lock net/openvswitch/datapath.c:105 [inline] #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_dp_cmd_new+0x5d9/0xe30 net/openvswitch/datapath.c:1642 2 locks held by syz-executor.2/14056: #0: 00000000884737e6 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_lock net/openvswitch/datapath.c:105 [inline] #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_dp_cmd_new+0x5d9/0xe30 net/openvswitch/datapath.c:1642 2 locks held by syz-executor.2/14077: #0: 00000000884737e6 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_lock net/openvswitch/datapath.c:105 [inline] #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_dp_cmd_new+0x5d9/0xe30 net/openvswitch/datapath.c:1642 2 locks held by syz-executor.3/14079: #0: 00000000884737e6 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_lock net/openvswitch/datapath.c:105 [inline] #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_dp_cmd_new+0x5d9/0xe30 net/openvswitch/datapath.c:1642 2 locks held by syz-executor.3/14083: #0: 00000000884737e6 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_lock net/openvswitch/datapath.c:105 [inline] #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_dp_cmd_new+0x5d9/0xe30 net/openvswitch/datapath.c:1642 2 locks held by syz-executor.3/14084: #0: 00000000884737e6 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_lock net/openvswitch/datapath.c:105 [inline] #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_dp_cmd_new+0x5d9/0xe30 net/openvswitch/datapath.c:1642 2 locks held by syz-executor.3/14093: #0: 00000000884737e6 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_lock net/openvswitch/datapath.c:105 [inline] #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_dp_cmd_new+0x5d9/0xe30 net/openvswitch/datapath.c:1642 2 locks held by syz-executor.1/14109: #0: 00000000884737e6 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_lock net/openvswitch/datapath.c:105 [inline] #1: 00000000410264e9 (ovs_mutex){+.+.}, at: ovs_dp_cmd_new+0x5d9/0xe30 net/openvswitch/datapath.c:1642 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1056 Comm: khungtaskd Not tainted 5.3.0-rc8+ #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+0x172/0x1f0 lib/dump_stack.c:113 nmi_cpu_backtrace.cold+0x70/0xb2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x23b/0x28b 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+0x9d0/0xef0 kernel/hung_task.c:289 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60