INFO: task syz-executor.0:10771 blocked for more than 143 seconds. Not tainted 5.2.0-rc4+ #45 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28560 10771 9061 0x00000004 Call Trace: context_switch kernel/sched/core.c:2818 [inline] __schedule+0x7cb/0x1560 kernel/sched/core.c:3445 schedule+0xa8/0x260 kernel/sched/core.c:3509 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3568 __mutex_lock_common kernel/locking/mutex.c:1003 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1073 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1088 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2482 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1307 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1333 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1922 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:665 ___sys_sendmsg+0x803/0x920 net/socket.c:2286 __sys_sendmsg+0x105/0x1d0 net/socket.c:2324 __do_sys_sendmsg net/socket.c:2333 [inline] __se_sys_sendmsg net/socket.c:2331 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2331 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413081 Code: 00 89 95 28 01 00 00 0f b6 15 97 67 24 00 88 95 34 01 00 00 48 8b 15 8e 67 24 00 89 95 2c 01 00 00 8b 15 7a 67 24 00 89 95 30 <01> 00 00 8b 15 fe a5 24 00 88 95 35 01 00 00 0f 84 d4 01 00 00 45 RSP: 002b:00007f770d12c9c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f770d12ca58 RCX: 0000000000413081 RDX: 0000000000000000 RSI: 00007f770d12ca00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f770d12ca40 R13: 00000000004cfad8 R14: 00000000004de7f0 R15: 00000000ffffffff INFO: task syz-executor.0:10780 blocked for more than 143 seconds. Not tainted 5.2.0-rc4+ #45 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D27808 10780 9061 0x00004004 Call Trace: context_switch kernel/sched/core.c:2818 [inline] __schedule+0x7cb/0x1560 kernel/sched/core.c:3445 schedule+0xa8/0x260 kernel/sched/core.c:3509 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3568 __mutex_lock_common kernel/locking/mutex.c:1003 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1073 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1088 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2482 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1307 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1333 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1922 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:665 ___sys_sendmsg+0x803/0x920 net/socket.c:2286 __sys_sendmsg+0x105/0x1d0 net/socket.c:2324 __do_sys_sendmsg net/socket.c:2333 [inline] __se_sys_sendmsg net/socket.c:2331 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2331 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413081 Code: 00 89 95 28 01 00 00 0f b6 15 97 67 24 00 88 95 34 01 00 00 48 8b 15 8e 67 24 00 89 95 2c 01 00 00 8b 15 7a 67 24 00 89 95 30 <01> 00 00 8b 15 fe a5 24 00 88 95 35 01 00 00 0f 84 d4 01 00 00 45 RSP: 002b:00007f770d10b9c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f770d10ba58 RCX: 0000000000413081 RDX: 0000000000000000 RSI: 00007f770d10ba00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f770d10ba40 R13: 00000000004cfad8 R14: 00000000004de7f0 R15: 00000000ffffffff INFO: task syz-executor.5:10774 blocked for more than 144 seconds. Not tainted 5.2.0-rc4+ #45 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D28560 10774 9058 0x00000004 Call Trace: context_switch kernel/sched/core.c:2818 [inline] __schedule+0x7cb/0x1560 kernel/sched/core.c:3445 schedule+0xa8/0x260 kernel/sched/core.c:3509 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3568 __mutex_lock_common kernel/locking/mutex.c:1003 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1073 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1088 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2482 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1307 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1333 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1922 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:665 ___sys_sendmsg+0x803/0x920 net/socket.c:2286 __sys_sendmsg+0x105/0x1d0 net/socket.c:2324 __do_sys_sendmsg net/socket.c:2333 [inline] __se_sys_sendmsg net/socket.c:2331 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2331 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413081 Code: 00 89 95 28 01 00 00 0f b6 15 97 67 24 00 88 95 34 01 00 00 48 8b 15 8e 67 24 00 89 95 2c 01 00 00 8b 15 7a 67 24 00 89 95 30 <01> 00 00 8b 15 fe a5 24 00 88 95 35 01 00 00 0f 84 d4 01 00 00 45 RSP: 002b:00007f8ea97919c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f8ea9791a58 RCX: 0000000000413081 RDX: 0000000000000000 RSI: 00007f8ea9791a00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f8ea9791a40 R13: 00000000004cfad8 R14: 00000000004de7f0 R15: 00000000ffffffff INFO: task syz-executor.5:10779 blocked for more than 144 seconds. Not tainted 5.2.0-rc4+ #45 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D27808 10779 9058 0x00000004 Call Trace: context_switch kernel/sched/core.c:2818 [inline] __schedule+0x7cb/0x1560 kernel/sched/core.c:3445 schedule+0xa8/0x260 kernel/sched/core.c:3509 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3568 __mutex_lock_common kernel/locking/mutex.c:1003 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1073 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1088 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2482 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1307 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1333 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1922 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:665 ___sys_sendmsg+0x803/0x920 net/socket.c:2286 __sys_sendmsg+0x105/0x1d0 net/socket.c:2324 __do_sys_sendmsg net/socket.c:2333 [inline] __se_sys_sendmsg net/socket.c:2331 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2331 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413081 Code: 00 89 95 28 01 00 00 0f b6 15 97 67 24 00 88 95 34 01 00 00 48 8b 15 8e 67 24 00 89 95 2c 01 00 00 8b 15 7a 67 24 00 89 95 30 <01> 00 00 8b 15 fe a5 24 00 88 95 35 01 00 00 0f 84 d4 01 00 00 45 RSP: 002b:00007f8ea97709c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f8ea9770a58 RCX: 0000000000413081 RDX: 0000000000000000 RSI: 00007f8ea9770a00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f8ea9770a40 R13: 00000000004cfad8 R14: 00000000004de7f0 R15: 00000000ffffffff INFO: task syz-executor.1:10776 blocked for more than 145 seconds. Not tainted 5.2.0-rc4+ #45 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28560 10776 9055 0x00000004 Call Trace: context_switch kernel/sched/core.c:2818 [inline] __schedule+0x7cb/0x1560 kernel/sched/core.c:3445 schedule+0xa8/0x260 kernel/sched/core.c:3509 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3568 __mutex_lock_common kernel/locking/mutex.c:1003 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1073 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1088 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2482 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1307 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1333 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1922 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:665 ___sys_sendmsg+0x803/0x920 net/socket.c:2286 __sys_sendmsg+0x105/0x1d0 net/socket.c:2324 __do_sys_sendmsg net/socket.c:2333 [inline] __se_sys_sendmsg net/socket.c:2331 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2331 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413081 Code: 00 89 95 28 01 00 00 0f b6 15 97 67 24 00 88 95 34 01 00 00 48 8b 15 8e 67 24 00 89 95 2c 01 00 00 8b 15 7a 67 24 00 89 95 30 <01> 00 00 8b 15 fe a5 24 00 88 95 35 01 00 00 0f 84 d4 01 00 00 45 RSP: 002b:00007f38be2599c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f38be259a58 RCX: 0000000000413081 RDX: 0000000000000000 RSI: 00007f38be259a00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000004 R11: 0000000000000293 R12: 00007f38be259a40 R13: 00000000004cfad8 R14: 00000000004de7f0 R15: 00000000ffffffff INFO: task syz-executor.1:10781 blocked for more than 146 seconds. Not tainted 5.2.0-rc4+ #45 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D27808 10781 9055 0x00004004 Call Trace: context_switch kernel/sched/core.c:2818 [inline] __schedule+0x7cb/0x1560 kernel/sched/core.c:3445 schedule+0xa8/0x260 kernel/sched/core.c:3509 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3568 __mutex_lock_common kernel/locking/mutex.c:1003 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1073 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1088 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2482 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1307 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1333 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1922 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:665 ___sys_sendmsg+0x803/0x920 net/socket.c:2286 __sys_sendmsg+0x105/0x1d0 net/socket.c:2324 __do_sys_sendmsg net/socket.c:2333 [inline] __se_sys_sendmsg net/socket.c:2331 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2331 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413081 Code: 00 89 95 28 01 00 00 0f b6 15 97 67 24 00 88 95 34 01 00 00 48 8b 15 8e 67 24 00 89 95 2c 01 00 00 8b 15 7a 67 24 00 89 95 30 <01> 00 00 8b 15 fe a5 24 00 88 95 35 01 00 00 0f 84 d4 01 00 00 45 RSP: 002b:00007f38be2389c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f38be238a58 RCX: 0000000000413081 RDX: 0000000000000000 RSI: 00007f38be238a00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f38be238a40 R13: 00000000004cfad8 R14: 00000000004de7f0 R15: 00000000ffffffff INFO: task syz-executor.2:10778 blocked for more than 146 seconds. Not tainted 5.2.0-rc4+ #45 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D27696 10778 9063 0x00000004 Call Trace: context_switch kernel/sched/core.c:2818 [inline] __schedule+0x7cb/0x1560 kernel/sched/core.c:3445 schedule+0xa8/0x260 kernel/sched/core.c:3509 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3568 __mutex_lock_common kernel/locking/mutex.c:1003 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1073 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1088 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2482 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1307 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1333 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1922 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:665 ___sys_sendmsg+0x803/0x920 net/socket.c:2286 __sys_sendmsg+0x105/0x1d0 net/socket.c:2324 __do_sys_sendmsg net/socket.c:2333 [inline] __se_sys_sendmsg net/socket.c:2331 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2331 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413081 Code: 00 89 95 28 01 00 00 0f b6 15 97 67 24 00 88 95 34 01 00 00 48 8b 15 8e 67 24 00 89 95 2c 01 00 00 8b 15 7a 67 24 00 89 95 30 <01> 00 00 8b 15 fe a5 24 00 88 95 35 01 00 00 0f 84 d4 01 00 00 45 RSP: 002b:00007f1d49a979c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f1d49a97a58 RCX: 0000000000413081 RDX: 0000000000000000 RSI: 00007f1d49a97a00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000004 R11: 0000000000000293 R12: 00007f1d49a97a40 R13: 00000000004cfad8 R14: 00000000004de7f0 R15: 00000000ffffffff INFO: task syz-executor.2:10783 blocked for more than 147 seconds. Not tainted 5.2.0-rc4+ #45 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D27808 10783 9063 0x00000004 Call Trace: context_switch kernel/sched/core.c:2818 [inline] __schedule+0x7cb/0x1560 kernel/sched/core.c:3445 schedule+0xa8/0x260 kernel/sched/core.c:3509 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3568 __mutex_lock_common kernel/locking/mutex.c:1003 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1073 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1088 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2482 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1307 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1333 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1922 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:665 ___sys_sendmsg+0x803/0x920 net/socket.c:2286 __sys_sendmsg+0x105/0x1d0 net/socket.c:2324 __do_sys_sendmsg net/socket.c:2333 [inline] __se_sys_sendmsg net/socket.c:2331 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2331 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413081 Code: 00 89 95 28 01 00 00 0f b6 15 97 67 24 00 88 95 34 01 00 00 48 8b 15 8e 67 24 00 89 95 2c 01 00 00 8b 15 7a 67 24 00 89 95 30 <01> 00 00 8b 15 fe a5 24 00 88 95 35 01 00 00 0f 84 d4 01 00 00 45 RSP: 002b:00007f1d49a769c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f1d49a76a58 RCX: 0000000000413081 RDX: 0000000000000000 RSI: 00007f1d49a76a00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f1d49a76a40 R13: 00000000004cfad8 R14: 00000000004de7f0 R15: 00000000ffffffff INFO: task syz-executor.4:10785 blocked for more than 147 seconds. Not tainted 5.2.0-rc4+ #45 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D28560 10785 9062 0x00000004 Call Trace: context_switch kernel/sched/core.c:2818 [inline] __schedule+0x7cb/0x1560 kernel/sched/core.c:3445 schedule+0xa8/0x260 kernel/sched/core.c:3509 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3568 __mutex_lock_common kernel/locking/mutex.c:1003 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1073 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1088 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2482 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1307 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1333 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1922 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:665 ___sys_sendmsg+0x803/0x920 net/socket.c:2286 __sys_sendmsg+0x105/0x1d0 net/socket.c:2324 __do_sys_sendmsg net/socket.c:2333 [inline] __se_sys_sendmsg net/socket.c:2331 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2331 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413081 Code: 00 89 95 28 01 00 00 0f b6 15 97 67 24 00 88 95 34 01 00 00 48 8b 15 8e 67 24 00 89 95 2c 01 00 00 8b 15 7a 67 24 00 89 95 30 <01> 00 00 8b 15 fe a5 24 00 88 95 35 01 00 00 0f 84 d4 01 00 00 45 RSP: 002b:00007f62222a29c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f62222a2a58 RCX: 0000000000413081 RDX: 0000000000000000 RSI: 00007f62222a2a00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f62222a2a40 R13: 00000000004cfad8 R14: 00000000004de7f0 R15: 00000000ffffffff INFO: task syz-executor.4:10786 blocked for more than 148 seconds. Not tainted 5.2.0-rc4+ #45 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D27808 10786 9062 0x00004004 Call Trace: context_switch kernel/sched/core.c:2818 [inline] __schedule+0x7cb/0x1560 kernel/sched/core.c:3445 schedule+0xa8/0x260 kernel/sched/core.c:3509 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3568 __mutex_lock_common kernel/locking/mutex.c:1003 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1073 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1088 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2482 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1307 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1333 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1922 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:665 ___sys_sendmsg+0x803/0x920 net/socket.c:2286 __sys_sendmsg+0x105/0x1d0 net/socket.c:2324 __do_sys_sendmsg net/socket.c:2333 [inline] __se_sys_sendmsg net/socket.c:2331 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2331 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413081 Code: 00 89 95 28 01 00 00 0f b6 15 97 67 24 00 88 95 34 01 00 00 48 8b 15 8e 67 24 00 89 95 2c 01 00 00 8b 15 7a 67 24 00 89 95 30 <01> 00 00 8b 15 fe a5 24 00 88 95 35 01 00 00 0f 84 d4 01 00 00 45 RSP: 002b:00007f62222819c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f6222281a58 RCX: 0000000000413081 RDX: 0000000000000000 RSI: 00007f6222281a00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f6222281a40 R13: 00000000004cfad8 R14: 00000000004de7f0 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1043: #0: 0000000020eafeda (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:5149 1 lock held by rsyslogd/8917: #0: 0000000054af85bd (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:801 2 locks held by getty/9007: #0: 0000000050eacb10 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000009e0b2601 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/9008: #0: 000000002e675e08 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000f7c29320 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/9009: #0: 00000000976c8d1e (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000a11bbea7 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/9010: #0: 00000000a20b08cb (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 0000000083c7c2ee (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/9011: #0: 000000008d278b38 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000f4cb23e5 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/9012: #0: 00000000a7fb0692 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 0000000077932231 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/9013: #0: 0000000044b79054 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000d4fd52bf (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 4 locks held by syz-executor.3/10770: 2 locks held by syz-executor.0/10771: #0: 00000000aed9629e (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 000000002cfba0e9 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 000000002cfba0e9 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 2 locks held by syz-executor.0/10780: #0: 00000000aed9629e (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 000000002cfba0e9 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 000000002cfba0e9 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 2 locks held by syz-executor.5/10774: #0: 00000000aed9629e (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 000000002cfba0e9 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 000000002cfba0e9 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 2 locks held by syz-executor.5/10779: #0: 00000000aed9629e (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 000000002cfba0e9 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 000000002cfba0e9 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 2 locks held by syz-executor.1/10776: #0: 00000000aed9629e (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 000000002cfba0e9 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 000000002cfba0e9 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 2 locks held by syz-executor.1/10781: #0: 00000000aed9629e (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 000000002cfba0e9 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 000000002cfba0e9 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 2 locks held by syz-executor.2/10778: #0: 00000000aed9629e (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 000000002cfba0e9 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 000000002cfba0e9 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 2 locks held by syz-executor.2/10783: #0: 00000000aed9629e (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 000000002cfba0e9 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 000000002cfba0e9 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 2 locks held by syz-executor.4/10785: #0: 00000000aed9629e (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 000000002cfba0e9 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 000000002cfba0e9 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 2 locks held by syz-executor.4/10786: #0: 00000000aed9629e (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 000000002cfba0e9 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 000000002cfba0e9 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1043 Comm: khungtaskd Not tainted 5.2.0-rc4+ #45 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:205 [inline] watchdog+0x9b7/0xec0 kernel/hung_task.c:289 kthread+0x354/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 1 to CPUs 0: INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.219 msecs NMI backtrace for cpu 0 CPU: 0 PID: 10770 Comm: syz-executor.3 Not tainted 5.2.0-rc4+ #45 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x11/0x20 kernel/kcov.c:189 Code: bf 03 00 00 00 48 89 e5 48 8b 4d 08 e8 d8 fe ff ff 5d c3 66 0f 1f 44 00 00 55 89 f2 89 fe bf 05 00 00 00 48 89 e5 48 8b 4d 08 ba fe ff ff 5d c3 0f 1f 84 00 00 00 00 00 55 48 89 f2 48 89 fe RSP: 0018:ffff8880a8b86c90 EFLAGS: 00000246 RAX: ffff88808cb1a5c0 RBX: 0000000000000001 RCX: ffffffff8335612e RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000005 RBP: ffff8880a8b86c90 R08: ffff88808cb1a5c0 R09: 0000000000000004 R10: ffffed1015d06bdf R11: ffff8880ae835efb R12: 0000000000000000 R13: ffff888092410f80 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007f29b77e8700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 0000000096712000 CR4: 00000000001406f0 Call Trace: check_preemption_disabled lib/smp_processor_id.c:16 [inline] debug_smp_processor_id+0x2e/0x280 lib/smp_processor_id.c:57 rcu_dynticks_curr_cpu_in_eqs+0x17/0xb0 kernel/rcu/tree.c:290 rcu_is_watching+0x10/0x30 kernel/rcu/tree.c:872 rcu_read_unlock include/linux/rcupdate.h:643 [inline] tipc_sk_lookup+0x6c1/0xc00 net/tipc/socket.c:2811 tipc_nl_publ_dump+0x1f8/0xd70 net/tipc/socket.c:3617 __tipc_nl_compat_dumpit.isra.0+0x21a/0x930 net/tipc/netlink_compat.c:206 tipc_nl_compat_publ_dump net/tipc/netlink_compat.c:997 [inline] tipc_nl_compat_sk_dump+0x54d/0x970 net/tipc/netlink_compat.c:1049 __tipc_nl_compat_dumpit.isra.0+0x320/0x930 net/tipc/netlink_compat.c:215 tipc_nl_compat_dumpit+0x207/0x4c0 net/tipc/netlink_compat.c:286 tipc_nl_compat_handle net/tipc/netlink_compat.c:1248 [inline] tipc_nl_compat_recv+0x5df/0xae0 net/tipc/netlink_compat.c:1286 genl_family_rcv_msg+0x74b/0xf90 net/netlink/genetlink.c:629 genl_rcv_msg+0xca/0x16c net/netlink/genetlink.c:654 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2482 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1307 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1333 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1922 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:665 ___sys_sendmsg+0x803/0x920 net/socket.c:2286 __sys_sendmsg+0x105/0x1d0 net/socket.c:2324 __do_sys_sendmsg net/socket.c:2333 [inline] __se_sys_sendmsg net/socket.c:2331 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2331 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459279 Code: fd b7 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 b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f29b77e7c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459279 RDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000004 RBP: 000000000075bfc0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f29b77e86d4 R13: 00000000004cdcb0 R14: 00000000004dbd48 R15: 00000000ffffffff