INFO: task syz-executor.0:15876 blocked for more than 140 seconds. Not tainted 5.0.0-rc8+ #2 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28672 15876 8058 0x00000004 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 schedule+0x92/0x180 kernel/sched/core.c:3529 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3587 __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:2477 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:1917 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 ___sys_sendmsg+0x806/0x930 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411e51 Code: 30 44 00 b9 08 00 00 00 48 89 ee f3 a6 74 2a bf 60 30 44 00 b9 09 00 00 00 48 89 ee f3 a6 75 29 48 c7 03 90 1c 41 00 31 c0 48 <83> c4 08 5b 5d c3 66 0f 1f 84 00 00 00 00 00 48 c7 03 b0 20 41 00 RSP: 002b:00007f56ddec89c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f56ddec8a58 RCX: 0000000000411e51 RDX: 0000000000000000 RSI: 00007f56ddec8a00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f56ddec8a40 R13: 00000000004cd770 R14: 00000000004dbab0 R15: 00000000ffffffff INFO: task syz-executor.0:15883 blocked for more than 140 seconds. Not tainted 5.0.0-rc8+ #2 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D27920 15883 8058 0x00000004 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 schedule+0x92/0x180 kernel/sched/core.c:3529 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3587 __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:2477 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:1917 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 ___sys_sendmsg+0x806/0x930 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411e51 Code: 30 44 00 b9 08 00 00 00 48 89 ee f3 a6 74 2a bf 60 30 44 00 b9 09 00 00 00 48 89 ee f3 a6 75 29 48 c7 03 90 1c 41 00 31 c0 48 <83> c4 08 5b 5d c3 66 0f 1f 84 00 00 00 00 00 48 c7 03 b0 20 41 00 RSP: 002b:00007f56ddea79c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f56ddea7a58 RCX: 0000000000411e51 RDX: 0000000000000000 RSI: 00007f56ddea7a00 RDI: 0000000000000008 RBP: 0000000000000008 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f56ddea7a40 R13: 00000000004cd770 R14: 00000000004dbab0 R15: 00000000ffffffff INFO: task syz-executor.4:15870 blocked for more than 140 seconds. Not tainted 5.0.0-rc8+ #2 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D27616 15870 8066 0x00000004 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 schedule+0x92/0x180 kernel/sched/core.c:3529 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3587 __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:2477 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:1917 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 ___sys_sendmsg+0x806/0x930 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: Bad RIP value. RSP: 002b:00007f55658b6c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457e29 RDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000004 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f55658b76d4 R13: 00000000004cb948 R14: 00000000004d9050 R15: 00000000ffffffff INFO: task syz-executor.4:15887 blocked for more than 140 seconds. Not tainted 5.0.0-rc8+ #2 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D28672 15887 8066 0x00000004 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 schedule+0x92/0x180 kernel/sched/core.c:3529 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3587 __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:2477 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:1917 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 ___sys_sendmsg+0x806/0x930 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411e51 Code: 30 44 00 b9 08 00 00 00 48 89 ee f3 a6 74 2a bf 60 30 44 00 b9 09 00 00 00 48 89 ee f3 a6 75 29 48 c7 03 90 1c 41 00 31 c0 48 <83> c4 08 5b 5d c3 66 0f 1f 84 00 00 00 00 00 48 c7 03 b0 20 41 00 RSP: 002b:00007f55658749c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f5565874a58 RCX: 0000000000411e51 RDX: 0000000000000000 RSI: 00007f5565874a00 RDI: 0000000000000006 RBP: 0000000000000006 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f5565874a40 R13: 00000000004cd770 R14: 00000000004dbab0 R15: 00000000ffffffff INFO: task syz-executor.4:15888 blocked for more than 140 seconds. Not tainted 5.0.0-rc8+ #2 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D28672 15888 8066 0x00000004 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 schedule+0x92/0x180 kernel/sched/core.c:3529 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3587 __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:2477 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:1917 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 ___sys_sendmsg+0x806/0x930 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: Bad RIP value. RSP: 002b:00007f5565853c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457e29 RDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000004 RBP: 000000000073c0e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f55658546d4 R13: 00000000004cb948 R14: 00000000004d9050 R15: 00000000ffffffff INFO: task syz-executor.2:15875 blocked for more than 140 seconds. Not tainted 5.0.0-rc8+ #2 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28672 15875 8061 0x00000004 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 schedule+0x92/0x180 kernel/sched/core.c:3529 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3587 __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:2477 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:1917 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 ___sys_sendmsg+0x806/0x930 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411e51 Code: 30 44 00 b9 08 00 00 00 48 89 ee f3 a6 74 2a bf 60 30 44 00 b9 09 00 00 00 48 89 ee f3 a6 75 29 48 c7 03 90 1c 41 00 31 c0 48 <83> c4 08 5b 5d c3 66 0f 1f 84 00 00 00 00 00 48 c7 03 b0 20 41 00 RSP: 002b:00007f2de49f89c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f2de49f8a58 RCX: 0000000000411e51 RDX: 0000000000000000 RSI: 00007f2de49f8a00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f2de49f8a40 R13: 00000000004cd770 R14: 00000000004dbab0 R15: 00000000ffffffff INFO: task syz-executor.2:15882 blocked for more than 140 seconds. Not tainted 5.0.0-rc8+ #2 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D27920 15882 8061 0x00000004 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 schedule+0x92/0x180 kernel/sched/core.c:3529 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3587 __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:2477 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:1917 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 ___sys_sendmsg+0x806/0x930 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411e51 Code: 30 44 00 b9 08 00 00 00 48 89 ee f3 a6 74 2a bf 60 30 44 00 b9 09 00 00 00 48 89 ee f3 a6 75 29 48 c7 03 90 1c 41 00 31 c0 48 <83> c4 08 5b 5d c3 66 0f 1f 84 00 00 00 00 00 48 c7 03 b0 20 41 00 RSP: 002b:00007f2de49d79c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f2de49d7a58 RCX: 0000000000411e51 RDX: 0000000000000000 RSI: 00007f2de49d7a00 RDI: 0000000000000008 RBP: 0000000000000008 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f2de49d7a40 R13: 00000000004cd770 R14: 00000000004dbab0 R15: 00000000ffffffff INFO: task syz-executor.3:15878 blocked for more than 140 seconds. Not tainted 5.0.0-rc8+ #2 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D28672 15878 8059 0x00000004 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 schedule+0x92/0x180 kernel/sched/core.c:3529 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3587 __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:2477 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:1917 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 ___sys_sendmsg+0x806/0x930 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411e51 Code: 30 44 00 b9 08 00 00 00 48 89 ee f3 a6 74 2a bf 60 30 44 00 b9 09 00 00 00 48 89 ee f3 a6 75 29 48 c7 03 90 1c 41 00 31 c0 48 <83> c4 08 5b 5d c3 66 0f 1f 84 00 00 00 00 00 48 c7 03 b0 20 41 00 RSP: 002b:00007f63a632d9c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f63a632da58 RCX: 0000000000411e51 RDX: 0000000000000000 RSI: 00007f63a632da00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f63a632da40 R13: 00000000004cd770 R14: 00000000004dbab0 R15: 00000000ffffffff INFO: task syz-executor.3:15884 blocked for more than 140 seconds. Not tainted 5.0.0-rc8+ #2 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D27920 15884 8059 0x00000004 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 schedule+0x92/0x180 kernel/sched/core.c:3529 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3587 __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:2477 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:1917 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 ___sys_sendmsg+0x806/0x930 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411e51 Code: 30 44 00 b9 08 00 00 00 48 89 ee f3 a6 74 2a bf 60 30 44 00 b9 09 00 00 00 48 89 ee f3 a6 75 29 48 c7 03 90 1c 41 00 31 c0 48 <83> c4 08 5b 5d c3 66 0f 1f 84 00 00 00 00 00 48 c7 03 b0 20 41 00 RSP: 002b:00007f63a630c9c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f63a630ca58 RCX: 0000000000411e51 RDX: 0000000000000000 RSI: 00007f63a630ca00 RDI: 0000000000000008 RBP: 0000000000000008 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f63a630ca40 R13: 00000000004cd770 R14: 00000000004dbab0 R15: 00000000ffffffff INFO: task syz-executor.1:15881 blocked for more than 140 seconds. Not tainted 5.0.0-rc8+ #2 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28672 15881 8063 0x00000004 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 schedule+0x92/0x180 kernel/sched/core.c:3529 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3587 __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:2477 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:1917 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 ___sys_sendmsg+0x806/0x930 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411e51 Code: 30 44 00 b9 08 00 00 00 48 89 ee f3 a6 74 2a bf 60 30 44 00 b9 09 00 00 00 48 89 ee f3 a6 75 29 48 c7 03 90 1c 41 00 31 c0 48 <83> c4 08 5b 5d c3 66 0f 1f 84 00 00 00 00 00 48 c7 03 b0 20 41 00 RSP: 002b:00007f830938d9c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f830938da58 RCX: 0000000000411e51 RDX: 0000000000000000 RSI: 00007f830938da00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f830938da40 R13: 00000000004cd770 R14: 00000000004dbab0 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1040: #0: 0000000063c6c3dd (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:4389 1 lock held by rsyslogd/7891: #0: 000000004a7f0cb3 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:795 2 locks held by getty/8015: #0: 00000000959615f3 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 0000000093211ce3 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/8016: #0: 000000002c9f8cdb (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000d9ecc933 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/8017: #0: 000000005b28b8b2 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000a504c693 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/8018: #0: 000000000e096416 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000e2296ec4 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/8019: #0: 0000000006fa68c0 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000db868501 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/8020: #0: 000000004272c4a7 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000e981a32b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/8021: #0: 000000000c94d316 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000005750e7e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by syz-executor.5/15868: 2 locks held by syz-executor.0/15876: #0: 000000003e5c5076 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:636 #1: 00000000b3ac1dcc (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000b3ac1dcc (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 2 locks held by syz-executor.0/15883: #0: 000000003e5c5076 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:636 #1: 00000000b3ac1dcc (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000b3ac1dcc (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 2 locks held by syz-executor.4/15870: #0: 000000003e5c5076 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:636 #1: 00000000b3ac1dcc (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000b3ac1dcc (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 2 locks held by syz-executor.4/15887: #0: 000000003e5c5076 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:636 #1: 00000000b3ac1dcc (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000b3ac1dcc (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 2 locks held by syz-executor.4/15888: #0: 000000003e5c5076 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:636 #1: 00000000b3ac1dcc (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000b3ac1dcc (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 2 locks held by syz-executor.2/15875: #0: 000000003e5c5076 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:636 #1: 00000000b3ac1dcc (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000b3ac1dcc (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 2 locks held by syz-executor.2/15882: #0: 000000003e5c5076 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:636 #1: 00000000b3ac1dcc (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000b3ac1dcc (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 2 locks held by syz-executor.3/15878: #0: 000000003e5c5076 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:636 #1: 00000000b3ac1dcc (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000b3ac1dcc (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 2 locks held by syz-executor.3/15884: #0: 000000003e5c5076 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:636 #1: 00000000b3ac1dcc (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000b3ac1dcc (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 2 locks held by syz-executor.1/15881: #0: 000000003e5c5076 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:636 #1: 00000000b3ac1dcc (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000b3ac1dcc (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 2 locks held by syz-executor.1/15885: #0: 000000003e5c5076 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:636 #1: 00000000b3ac1dcc (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000b3ac1dcc (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:624 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1040 Comm: khungtaskd Not tainted 5.0.0-rc8+ #2 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:203 [inline] watchdog+0x9df/0xee0 kernel/hung_task.c:287 kthread+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 0 to CPUs 1: INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.406 msecs NMI backtrace for cpu 1 CPU: 1 PID: 15868 Comm: syz-executor.5 Not tainted 5.0.0-rc8+ #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 kernel/kcov.c:94 Code: e5 08 41 bc f4 ff ff ff e8 11 9f ea ff 48 c7 05 72 fd e5 08 00 00 00 00 e9 c8 e9 ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 <55> 48 89 e5 48 8b 75 08 65 48 8b 04 25 40 ee 01 00 65 8b 15 98 0e RSP: 0018:ffff88808120ecf0 EFLAGS: 00000293 RAX: ffff8880a4a2c340 RBX: ffff88809b9e6e28 RCX: ffffffff83296b20 RDX: 0000000000000000 RSI: ffffffff83296b38 RDI: ffff88809b9e6e28 RBP: ffff88808120ed00 R08: ffff8880a4a2c340 R09: ffffed1015d25bd0 R10: ffffed1015d25bcf R11: ffff8880ae92de7b R12: ffff88809b9e6e28 R13: 0000000000000001 R14: 0000000000000000 R15: ffff88809b49c0c0 FS: 00007f57a86a9700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 00000000919fe000 CR4: 00000000001406e0 Call Trace: lockdep_rht_mutex_is_held+0x70/0x90 lib/rhashtable.c:54 __rhashtable_lookup include/linux/rhashtable.h:490 [inline] rhashtable_lookup include/linux/rhashtable.h:534 [inline] rhashtable_lookup_fast include/linux/rhashtable.h:560 [inline] tipc_sk_lookup+0xa3d/0xbe0 net/tipc/socket.c:2792 tipc_nl_publ_dump+0x1fb/0xd70 net/tipc/socket.c:3596 __tipc_nl_compat_dumpit.isra.0+0x220/0x930 net/tipc/netlink_compat.c:206 tipc_nl_compat_publ_dump net/tipc/netlink_compat.c:977 [inline] tipc_nl_compat_sk_dump+0x54a/0x970 net/tipc/netlink_compat.c:1028 __tipc_nl_compat_dumpit.isra.0+0x32c/0x930 net/tipc/netlink_compat.c:215 tipc_nl_compat_dumpit+0x1f4/0x440 net/tipc/netlink_compat.c:280 tipc_nl_compat_handle net/tipc/netlink_compat.c:1227 [inline] tipc_nl_compat_recv+0x5e5/0xae0 net/tipc/netlink_compat.c:1265 genl_family_rcv_msg+0x6e1/0xd90 net/netlink/genetlink.c:601 genl_rcv_msg+0xca/0x16c net/netlink/genetlink.c:626 netlink_rcv_skb+0x17a/0x460 net/netlink/af_netlink.c:2477 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:1917 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 ___sys_sendmsg+0x806/0x930 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 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 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f57a86a8c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457e29 RDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000006 RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f57a86a96d4 R13: 00000000004cb948 R14: 00000000004d9050 R15: 00000000ffffffff