INFO: task syz-executor.2:8857 blocked for more than 143 seconds. Not tainted 5.3.0+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28592 8857 8620 0x00000004 Call Trace: context_switch kernel/sched/core.c:3384 [inline] __schedule+0x76e/0x17d0 kernel/sched/core.c:4056 schedule+0xd9/0x260 kernel/sched/core.c:4123 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4182 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1103 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:652 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+0xfa/0x760 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413831 Code: eb a5 0f 1f 80 00 00 00 00 bf 7d 30 44 00 b9 09 00 00 00 48 89 ee f3 a6 74 1f bf 86 30 44 00 b9 11 00 00 00 48 89 ee f3 a6 75 <28> 48 c7 03 10 39 41 00 e9 70 ff ff ff 66 90 48 c7 03 80 3c 41 00 RSP: 002b:00007f16c67579c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f16c6757a58 RCX: 0000000000413831 RDX: 0000000000000000 RSI: 00007f16c6757a00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f16c6757a40 R13: 00000000004d0ae8 R14: 00000000004dfab0 R15: 00000000ffffffff INFO: task syz-executor.2:8868 blocked for more than 143 seconds. Not tainted 5.3.0+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D27840 8868 8620 0x00004004 Call Trace: context_switch kernel/sched/core.c:3384 [inline] __schedule+0x76e/0x17d0 kernel/sched/core.c:4056 schedule+0xd9/0x260 kernel/sched/core.c:4123 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4182 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1103 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:652 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+0xfa/0x760 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413831 Code: eb a5 0f 1f 80 00 00 00 00 bf 7d 30 44 00 b9 09 00 00 00 48 89 ee f3 a6 74 1f bf 86 30 44 00 b9 11 00 00 00 48 89 ee f3 a6 75 <28> 48 c7 03 10 39 41 00 e9 70 ff ff ff 66 90 48 c7 03 80 3c 41 00 RSP: 002b:00007f16c67369c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f16c6736a58 RCX: 0000000000413831 RDX: 0000000000000000 RSI: 00007f16c6736a00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f16c6736a40 R13: 00000000004d0ae8 R14: 00000000004dfab0 R15: 00000000ffffffff INFO: task syz-executor.3:8862 blocked for more than 144 seconds. Not tainted 5.3.0+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D28592 8862 8615 0x00000004 Call Trace: context_switch kernel/sched/core.c:3384 [inline] __schedule+0x76e/0x17d0 kernel/sched/core.c:4056 schedule+0xd9/0x260 kernel/sched/core.c:4123 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4182 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1103 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:652 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+0xfa/0x760 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413831 Code: eb a5 0f 1f 80 00 00 00 00 bf 7d 30 44 00 b9 09 00 00 00 48 89 ee f3 a6 74 1f bf 86 30 44 00 b9 11 00 00 00 48 89 ee f3 a6 75 <28> 48 c7 03 10 39 41 00 e9 70 ff ff ff 66 90 48 c7 03 80 3c 41 00 RSP: 002b:00007fc09de619c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fc09de61a58 RCX: 0000000000413831 RDX: 0000000000000000 RSI: 00007fc09de61a00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007fc09de61a40 R13: 00000000004d0ae8 R14: 00000000004dfab0 R15: 00000000ffffffff INFO: task syz-executor.3:8870 blocked for more than 145 seconds. Not tainted 5.3.0+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D27840 8870 8615 0x00000004 Call Trace: context_switch kernel/sched/core.c:3384 [inline] __schedule+0x76e/0x17d0 kernel/sched/core.c:4056 schedule+0xd9/0x260 kernel/sched/core.c:4123 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4182 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1103 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:652 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+0xfa/0x760 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413831 Code: eb a5 0f 1f 80 00 00 00 00 bf 7d 30 44 00 b9 09 00 00 00 48 89 ee f3 a6 74 1f bf 86 30 44 00 b9 11 00 00 00 48 89 ee f3 a6 75 <28> 48 c7 03 10 39 41 00 e9 70 ff ff ff 66 90 48 c7 03 80 3c 41 00 RSP: 002b:00007fc09de409c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fc09de40a58 RCX: 0000000000413831 RDX: 0000000000000000 RSI: 00007fc09de40a00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007fc09de40a40 R13: 00000000004d0ae8 R14: 00000000004dfab0 R15: 00000000ffffffff INFO: task syz-executor.1:8867 blocked for more than 145 seconds. Not tainted 5.3.0+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28592 8867 8618 0x00000004 Call Trace: context_switch kernel/sched/core.c:3384 [inline] __schedule+0x76e/0x17d0 kernel/sched/core.c:4056 schedule+0xd9/0x260 kernel/sched/core.c:4123 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4182 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1103 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:652 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+0xfa/0x760 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413831 Code: eb a5 0f 1f 80 00 00 00 00 bf 7d 30 44 00 b9 09 00 00 00 48 89 ee f3 a6 74 1f bf 86 30 44 00 b9 11 00 00 00 48 89 ee f3 a6 75 <28> 48 c7 03 10 39 41 00 e9 70 ff ff ff 66 90 48 c7 03 80 3c 41 00 RSP: 002b:00007f0e3b43a9c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f0e3b43aa58 RCX: 0000000000413831 RDX: 0000000000000000 RSI: 00007f0e3b43aa00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f0e3b43aa40 R13: 00000000004d0ae8 R14: 00000000004dfab0 R15: 00000000ffffffff INFO: task syz-executor.1:8872 blocked for more than 146 seconds. Not tainted 5.3.0+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D27840 8872 8618 0x00000004 Call Trace: context_switch kernel/sched/core.c:3384 [inline] __schedule+0x76e/0x17d0 kernel/sched/core.c:4056 schedule+0xd9/0x260 kernel/sched/core.c:4123 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4182 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1103 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:652 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+0xfa/0x760 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413831 Code: eb a5 0f 1f 80 00 00 00 00 bf 7d 30 44 00 b9 09 00 00 00 48 89 ee f3 a6 74 1f bf 86 30 44 00 b9 11 00 00 00 48 89 ee f3 a6 75 <28> 48 c7 03 10 39 41 00 e9 70 ff ff ff 66 90 48 c7 03 80 3c 41 00 RSP: 002b:00007f0e3b4199c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f0e3b419a58 RCX: 0000000000413831 RDX: 0000000000000000 RSI: 00007f0e3b419a00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f0e3b419a40 R13: 00000000004d0ae8 R14: 00000000004dfab0 R15: 00000000ffffffff INFO: task syz-executor.0:8866 blocked for more than 146 seconds. Not tainted 5.3.0+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28592 8866 8622 0x00000004 Call Trace: context_switch kernel/sched/core.c:3384 [inline] __schedule+0x76e/0x17d0 kernel/sched/core.c:4056 schedule+0xd9/0x260 kernel/sched/core.c:4123 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4182 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1103 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:652 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+0xfa/0x760 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413831 Code: eb a5 0f 1f 80 00 00 00 00 bf 7d 30 44 00 b9 09 00 00 00 48 89 ee f3 a6 74 1f bf 86 30 44 00 b9 11 00 00 00 48 89 ee f3 a6 75 <28> 48 c7 03 10 39 41 00 e9 70 ff ff ff 66 90 48 c7 03 80 3c 41 00 RSP: 002b:00007fa466e919c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fa466e91a58 RCX: 0000000000413831 RDX: 0000000000000000 RSI: 00007fa466e91a00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007fa466e91a40 R13: 00000000004d0ae8 R14: 00000000004dfab0 R15: 00000000ffffffff INFO: task syz-executor.0:8873 blocked for more than 147 seconds. Not tainted 5.3.0+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D27840 8873 8622 0x00000004 Call Trace: context_switch kernel/sched/core.c:3384 [inline] __schedule+0x76e/0x17d0 kernel/sched/core.c:4056 schedule+0xd9/0x260 kernel/sched/core.c:4123 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4182 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1103 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:652 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+0xfa/0x760 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413831 Code: eb a5 0f 1f 80 00 00 00 00 bf 7d 30 44 00 b9 09 00 00 00 48 89 ee f3 a6 74 1f bf 86 30 44 00 b9 11 00 00 00 48 89 ee f3 a6 75 <28> 48 c7 03 10 39 41 00 e9 70 ff ff ff 66 90 48 c7 03 80 3c 41 00 RSP: 002b:00007fa466e709c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fa466e70a58 RCX: 0000000000413831 RDX: 0000000000000000 RSI: 00007fa466e70a00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007fa466e70a40 R13: 00000000004d0ae8 R14: 00000000004dfab0 R15: 00000000ffffffff INFO: task syz-executor.4:8871 blocked for more than 147 seconds. Not tainted 5.3.0+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D28592 8871 8623 0x00000004 Call Trace: context_switch kernel/sched/core.c:3384 [inline] __schedule+0x76e/0x17d0 kernel/sched/core.c:4056 schedule+0xd9/0x260 kernel/sched/core.c:4123 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4182 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1103 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:652 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+0xfa/0x760 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413831 Code: eb a5 0f 1f 80 00 00 00 00 bf 7d 30 44 00 b9 09 00 00 00 48 89 ee f3 a6 74 1f bf 86 30 44 00 b9 11 00 00 00 48 89 ee f3 a6 75 <28> 48 c7 03 10 39 41 00 e9 70 ff ff ff 66 90 48 c7 03 80 3c 41 00 RSP: 002b:00007f2eefc0b9c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f2eefc0ba58 RCX: 0000000000413831 RDX: 0000000000000000 RSI: 00007f2eefc0ba00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f2eefc0ba40 R13: 00000000004d0ae8 R14: 00000000004dfab0 R15: 00000000ffffffff INFO: task syz-executor.4:8874 blocked for more than 148 seconds. Not tainted 5.3.0+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D27840 8874 8623 0x00000004 Call Trace: context_switch kernel/sched/core.c:3384 [inline] __schedule+0x76e/0x17d0 kernel/sched/core.c:4056 schedule+0xd9/0x260 kernel/sched/core.c:4123 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4182 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1103 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:652 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+0xfa/0x760 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413831 Code: eb a5 0f 1f 80 00 00 00 00 bf 7d 30 44 00 b9 09 00 00 00 48 89 ee f3 a6 74 1f bf 86 30 44 00 b9 11 00 00 00 48 89 ee f3 a6 75 <28> 48 c7 03 10 39 41 00 e9 70 ff ff ff 66 90 48 c7 03 80 3c 41 00 RSP: 002b:00007f2eefbea9c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f2eefbeaa58 RCX: 0000000000413831 RDX: 0000000000000000 RSI: 00007f2eefbeaa00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f2eefbeaa40 R13: 00000000004d0ae8 R14: 00000000004dfab0 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1063: #0: ffffffff88fab280 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:5337 1 lock held by rsyslogd/8482: #0: ffff8880a8345ba0 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:801 2 locks held by getty/8572: #0: ffff8880a4ca0c50 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90005f772e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8573: #0: ffff88808653a1d0 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90005f832e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8574: #0: ffff8880a1876c50 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90005f7b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8575: #0: ffff8880a4ca14d0 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90005f732e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8576: #0: ffff88808c17e310 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90005f632e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8577: #0: ffff8880a4ca03d0 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90005f7f2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/8578: #0: ffff8880a577eb50 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: ffffc90005f512e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by syz-executor.5/8854: 2 locks held by syz-executor.2/8857: #0: ffffffff899ef5e8 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: ffffffff899ef6a0 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff899ef6a0 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:652 2 locks held by syz-executor.2/8868: #0: ffffffff899ef5e8 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: ffffffff899ef6a0 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff899ef6a0 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:652 2 locks held by syz-executor.3/8862: #0: ffffffff899ef5e8 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: ffffffff899ef6a0 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff899ef6a0 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:652 2 locks held by syz-executor.3/8870: #0: ffffffff899ef5e8 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: ffffffff899ef6a0 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff899ef6a0 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:652 2 locks held by syz-executor.1/8867: #0: ffffffff899ef5e8 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: ffffffff899ef6a0 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff899ef6a0 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:652 2 locks held by syz-executor.1/8872: #0: ffffffff899ef5e8 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: ffffffff899ef6a0 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff899ef6a0 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:652 2 locks held by syz-executor.0/8866: #0: ffffffff899ef5e8 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: ffffffff899ef6a0 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff899ef6a0 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:652 2 locks held by syz-executor.0/8873: #0: ffffffff899ef5e8 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: ffffffff899ef6a0 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff899ef6a0 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:652 2 locks held by syz-executor.4/8871: #0: ffffffff899ef5e8 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: ffffffff899ef6a0 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff899ef6a0 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:652 2 locks held by syz-executor.4/8874: #0: ffffffff899ef5e8 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: ffffffff899ef6a0 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff899ef6a0 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:652 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1063 Comm: khungtaskd Not tainted 5.3.0+ #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 CPU: 0 PID: 8854 Comm: syz-executor.5 Not tainted 5.3.0+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:756 [inline] RIP: 0010:lock_acquire+0x20b/0x410 kernel/locking/lockdep.c:4490 Code: 94 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 d3 01 00 00 48 83 3d 81 5c 9a 07 00 0f 84 53 01 00 00 48 8b 7d c8 57 9d <0f> 1f 44 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 65 8b RSP: 0018:ffff88809658ecb0 EFLAGS: 00000286 RAX: 1ffffffff11e630c RBX: ffff888093d5e500 RCX: ffffffff81585c71 RDX: dffffc0000000000 RSI: 0000000000000008 RDI: 0000000000000286 RBP: ffff88809658ecf8 R08: 1ffffffff14ef12c R09: fffffbfff14ef12d R10: ffff888093d5ee10 R11: ffff888093d5e500 R12: ffffffff88fab280 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 FS: 00007fee81961700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 0000000094f2f000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_lock_acquire include/linux/rcupdate.h:208 [inline] rcu_read_lock include/linux/rcupdate.h:599 [inline] rhashtable_lookup_fast include/linux/rhashtable.h:670 [inline] tipc_sk_lookup+0x289/0xbf0 net/tipc/socket.c:2807 tipc_nl_publ_dump+0x1f8/0xd60 net/tipc/socket.c:3616 __tipc_nl_compat_dumpit.isra.0+0x21a/0x930 net/tipc/netlink_compat.c:207 tipc_nl_compat_publ_dump net/tipc/netlink_compat.c:1002 [inline] tipc_nl_compat_sk_dump+0x54d/0x970 net/tipc/netlink_compat.c:1054 __tipc_nl_compat_dumpit.isra.0+0x320/0x930 net/tipc/netlink_compat.c:216 tipc_nl_compat_dumpit+0x24c/0x510 net/tipc/netlink_compat.c:288 tipc_nl_compat_handle net/tipc/netlink_compat.c:1253 [inline] tipc_nl_compat_recv+0x5a0/0xae0 net/tipc/netlink_compat.c:1291 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+0xfa/0x760 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459a29 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:00007fee81960c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459a29 RDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000004 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fee819616d4 R13: 00000000004cecc0 R14: 00000000004dcff0 R15: 00000000ffffffff