INFO: task syz.0.1144:10079 blocked for more than 143 seconds. Not tainted 6.14.0-syzkaller-05877-g1a9239bb4253 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.1144 state:D stack:28064 pid:10079 tgid:10078 ppid:5830 task_flags:0x400040 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5366 [inline] __schedule+0x1b18/0x50e0 kernel/sched/core.c:6747 __schedule_loop kernel/sched/core.c:6824 [inline] schedule+0x163/0x360 kernel/sched/core.c:6839 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6896 __mutex_lock_common kernel/locking/mutex.c:664 [inline] __mutex_lock+0x7fa/0x1000 kernel/locking/mutex.c:732 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x208/0x480 net/netlink/af_netlink.c:2534 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x7f8/0x9a0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x8c3/0xcd0 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:727 __sys_sendto+0x365/0x4c0 net/socket.c:2180 __do_sys_sendto net/socket.c:2187 [inline] __se_sys_sendto net/socket.c:2183 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2183 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ffbb4b8effc RSP: 002b:00007ffbb5a57ec0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007ffbb5a57fc0 RCX: 00007ffbb4b8effc RDX: 0000000000000024 RSI: 00007ffbb5a58010 RDI: 0000000000000008 RBP: 0000000000000000 R08: 00007ffbb5a57f14 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000008 R13: 00007ffbb5a57f68 R14: 00007ffbb5a58010 R15: 0000000000000000 INFO: task syz.0.1144:10087 blocked for more than 143 seconds. Not tainted 6.14.0-syzkaller-05877-g1a9239bb4253 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.1144 state:D stack:25136 pid:10087 tgid:10078 ppid:5830 task_flags:0x400140 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5366 [inline] __schedule+0x1b18/0x50e0 kernel/sched/core.c:6747 __schedule_loop kernel/sched/core.c:6824 [inline] schedule+0x163/0x360 kernel/sched/core.c:6839 schedule_timeout+0xb1/0x290 kernel/time/sleep_timeout.c:75 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common kernel/sched/completion.c:116 [inline] wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x360/0x630 kernel/sched/completion.c:148 __flush_workqueue+0x579/0x1280 kernel/workqueue.c:4000 nbd_disconnect_and_put+0xac/0x2d0 drivers/block/nbd.c:2242 nbd_genl_disconnect+0x4a2/0x7a0 drivers/block/nbd.c:2281 genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0xb38/0xf00 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x208/0x480 net/netlink/af_netlink.c:2534 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x7f8/0x9a0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x8c3/0xcd0 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:727 ____sys_sendmsg+0x523/0x860 net/socket.c:2566 ___sys_sendmsg net/socket.c:2620 [inline] __sys_sendmsg+0x271/0x360 net/socket.c:2652 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ffbb4b8d169 RSP: 002b:00007ffbb5a17038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007ffbb4da6160 RCX: 00007ffbb4b8d169 RDX: 00000000000000c0 RSI: 0000200000000280 RDI: 0000000000000006 RBP: 00007ffbb4c0e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ffbb4da6160 R15: 00007fffe4c70de8 INFO: task syz.1.1145:10088 blocked for more than 144 seconds. Not tainted 6.14.0-syzkaller-05877-g1a9239bb4253 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.1145 state:D stack:24712 pid:10088 tgid:10081 ppid:5829 task_flags:0x400140 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5366 [inline] __schedule+0x1b18/0x50e0 kernel/sched/core.c:6747 __schedule_loop kernel/sched/core.c:6824 [inline] schedule+0x163/0x360 kernel/sched/core.c:6839 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6896 __mutex_lock_common kernel/locking/mutex.c:664 [inline] __mutex_lock+0x7fa/0x1000 kernel/locking/mutex.c:732 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x208/0x480 net/netlink/af_netlink.c:2534 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x7f8/0x9a0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x8c3/0xcd0 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:727 __sys_sendto+0x365/0x4c0 net/socket.c:2180 __do_sys_sendto net/socket.c:2187 [inline] __se_sys_sendto net/socket.c:2183 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2183 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f19fbd8effc RSP: 002b:00007f19fcc8bec0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f19fcc8bfc0 RCX: 00007f19fbd8effc RDX: 0000000000000020 RSI: 00007f19fcc8c010 RDI: 0000000000000005 RBP: 0000000000000000 R08: 00007f19fcc8bf14 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000005 R13: 00007f19fcc8bf68 R14: 00007f19fcc8c010 R15: 0000000000000000 INFO: task syz.2.1150:10104 blocked for more than 144 seconds. Not tainted 6.14.0-syzkaller-05877-g1a9239bb4253 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.1150 state:D stack:27120 pid:10104 tgid:10103 ppid:5839 task_flags:0x400140 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5366 [inline] __schedule+0x1b18/0x50e0 kernel/sched/core.c:6747 __schedule_loop kernel/sched/core.c:6824 [inline] schedule+0x163/0x360 kernel/sched/core.c:6839 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6896 __mutex_lock_common kernel/locking/mutex.c:664 [inline] __mutex_lock+0x7fa/0x1000 kernel/locking/mutex.c:732 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x208/0x480 net/netlink/af_netlink.c:2534 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x7f8/0x9a0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x8c3/0xcd0 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:727 __sys_sendto+0x365/0x4c0 net/socket.c:2180 __do_sys_sendto net/socket.c:2187 [inline] __se_sys_sendto net/socket.c:2183 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2183 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4556f8effc RSP: 002b:00007f4557ebcec0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f4557ebcfc0 RCX: 00007f4556f8effc RDX: 0000000000000028 RSI: 00007f4557ebd010 RDI: 0000000000000004 RBP: 0000000000000000 R08: 00007f4557ebcf14 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000004 R13: 00007f4557ebcf68 R14: 00007f4557ebd010 R15: 0000000000000000 INFO: task syz.2.1150:10108 blocked for more than 144 seconds. Not tainted 6.14.0-syzkaller-05877-g1a9239bb4253 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.1150 state:D stack:28064 pid:10108 tgid:10103 ppid:5839 task_flags:0x400040 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5366 [inline] __schedule+0x1b18/0x50e0 kernel/sched/core.c:6747 __schedule_loop kernel/sched/core.c:6824 [inline] schedule+0x163/0x360 kernel/sched/core.c:6839 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6896 __mutex_lock_common kernel/locking/mutex.c:664 [inline] __mutex_lock+0x7fa/0x1000 kernel/locking/mutex.c:732 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x208/0x480 net/netlink/af_netlink.c:2534 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x7f8/0x9a0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x8c3/0xcd0 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:727 __sys_sendto+0x365/0x4c0 net/socket.c:2180 __do_sys_sendto net/socket.c:2187 [inline] __se_sys_sendto net/socket.c:2183 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2183 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4556f8effc RSP: 002b:00007f4557e9bec0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f4557e9bfc0 RCX: 00007f4556f8effc RDX: 0000000000000024 RSI: 00007f4557e9c010 RDI: 0000000000000004 RBP: 0000000000000000 R08: 00007f4557e9bf14 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000004 R13: 00007f4557e9bf68 R14: 00007f4557e9c010 R15: 0000000000000000 INFO: task syz.4.1152:10120 blocked for more than 145 seconds. Not tainted 6.14.0-syzkaller-05877-g1a9239bb4253 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.4.1152 state:D stack:27744 pid:10120 tgid:10119 ppid:5836 task_flags:0x400140 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5366 [inline] __schedule+0x1b18/0x50e0 kernel/sched/core.c:6747 __schedule_loop kernel/sched/core.c:6824 [inline] schedule+0x163/0x360 kernel/sched/core.c:6839 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6896 __mutex_lock_common kernel/locking/mutex.c:664 [inline] __mutex_lock+0x7fa/0x1000 kernel/locking/mutex.c:732 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x208/0x480 net/netlink/af_netlink.c:2534 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x7f8/0x9a0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x8c3/0xcd0 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:727 __sys_sendto+0x365/0x4c0 net/socket.c:2180 __do_sys_sendto net/socket.c:2187 [inline] __se_sys_sendto net/socket.c:2183 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2183 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1c8cb8effc RSP: 002b:00007f1c8da77ec0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f1c8da77fc0 RCX: 00007f1c8cb8effc RDX: 0000000000000020 RSI: 00007f1c8da78010 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007f1c8da77f14 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 00007f1c8da77f68 R14: 00007f1c8da78010 R15: 0000000000000000 INFO: task syz.4.1152:10121 blocked for more than 145 seconds. Not tainted 6.14.0-syzkaller-05877-g1a9239bb4253 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.4.1152 state:D stack:27744 pid:10121 tgid:10119 ppid:5836 task_flags:0x400140 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5366 [inline] __schedule+0x1b18/0x50e0 kernel/sched/core.c:6747 __schedule_loop kernel/sched/core.c:6824 [inline] schedule+0x163/0x360 kernel/sched/core.c:6839 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6896 __mutex_lock_common kernel/locking/mutex.c:664 [inline] __mutex_lock+0x7fa/0x1000 kernel/locking/mutex.c:732 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x208/0x480 net/netlink/af_netlink.c:2534 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x7f8/0x9a0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x8c3/0xcd0 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:727 __sys_sendto+0x365/0x4c0 net/socket.c:2180 __do_sys_sendto net/socket.c:2187 [inline] __se_sys_sendto net/socket.c:2183 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2183 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1c8cb8effc RSP: 002b:00007f1c8da56ec0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f1c8da56fc0 RCX: 00007f1c8cb8effc RDX: 0000000000000020 RSI: 00007f1c8da57010 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007f1c8da56f14 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 00007f1c8da56f68 R14: 00007f1c8da57010 R15: 0000000000000000 INFO: task syz.4.1152:10122 blocked for more than 145 seconds. Not tainted 6.14.0-syzkaller-05877-g1a9239bb4253 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.4.1152 state:D stack:27552 pid:10122 tgid:10119 ppid:5836 task_flags:0x400140 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5366 [inline] __schedule+0x1b18/0x50e0 kernel/sched/core.c:6747 __schedule_loop kernel/sched/core.c:6824 [inline] schedule+0x163/0x360 kernel/sched/core.c:6839 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6896 __mutex_lock_common kernel/locking/mutex.c:664 [inline] __mutex_lock+0x7fa/0x1000 kernel/locking/mutex.c:732 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x208/0x480 net/netlink/af_netlink.c:2534 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x7f8/0x9a0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x8c3/0xcd0 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:727 __sys_sendto+0x365/0x4c0 net/socket.c:2180 __do_sys_sendto net/socket.c:2187 [inline] __se_sys_sendto net/socket.c:2183 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2183 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1c8cb8effc RSP: 002b:00007f1c8da35ec0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f1c8da35fc0 RCX: 00007f1c8cb8effc RDX: 0000000000000024 RSI: 00007f1c8da36010 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007f1c8da35f14 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 00007f1c8da35f68 R14: 00007f1c8da36010 R15: 0000000000000000 INFO: task syz.4.1152:10123 blocked for more than 146 seconds. Not tainted 6.14.0-syzkaller-05877-g1a9239bb4253 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.4.1152 state:D stack:27744 pid:10123 tgid:10119 ppid:5836 task_flags:0x400140 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5366 [inline] __schedule+0x1b18/0x50e0 kernel/sched/core.c:6747 __schedule_loop kernel/sched/core.c:6824 [inline] schedule+0x163/0x360 kernel/sched/core.c:6839 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6896 __mutex_lock_common kernel/locking/mutex.c:664 [inline] __mutex_lock+0x7fa/0x1000 kernel/locking/mutex.c:732 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x208/0x480 net/netlink/af_netlink.c:2534 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x7f8/0x9a0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x8c3/0xcd0 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:727 __sys_sendto+0x365/0x4c0 net/socket.c:2180 __do_sys_sendto net/socket.c:2187 [inline] __se_sys_sendto net/socket.c:2183 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2183 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1c8cb8effc RSP: 002b:00007f1c8da14ec0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f1c8da14fc0 RCX: 00007f1c8cb8effc RDX: 0000000000000020 RSI: 00007f1c8da15010 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007f1c8da14f14 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 00007f1c8da14f68 R14: 00007f1c8da15010 R15: 0000000000000000 INFO: task syz.3.1158:10143 blocked for more than 146 seconds. Not tainted 6.14.0-syzkaller-05877-g1a9239bb4253 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.1158 state:D stack:26864 pid:10143 tgid:10141 ppid:5828 task_flags:0x400040 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5366 [inline] __schedule+0x1b18/0x50e0 kernel/sched/core.c:6747 __schedule_loop kernel/sched/core.c:6824 [inline] schedule+0x163/0x360 kernel/sched/core.c:6839 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6896 __mutex_lock_common kernel/locking/mutex.c:664 [inline] __mutex_lock+0x7fa/0x1000 kernel/locking/mutex.c:732 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x208/0x480 net/netlink/af_netlink.c:2534 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x7f8/0x9a0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x8c3/0xcd0 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:727 __sys_sendto+0x365/0x4c0 net/socket.c:2180 __do_sys_sendto net/socket.c:2187 [inline] __se_sys_sendto net/socket.c:2183 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2183 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3234d8effc RSP: 002b:00007f3235bacec0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f3235bacfc0 RCX: 00007f3234d8effc RDX: 0000000000000020 RSI: 00007f3235bad010 RDI: 0000000000000007 RBP: 0000000000000000 R08: 00007f3235bacf14 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000007 R13: 00007f3235bacf68 R14: 00007f3235bad010 R15: 0000000000000000 Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings INFO: task syz.3.1158:10144 blocked for more than 146 seconds. Not tainted 6.14.0-syzkaller-05877-g1a9239bb4253 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.1158 state:D stack:27744 pid:10144 tgid:10141 ppid:5828 task_flags:0x400040 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5366 [inline] __schedule+0x1b18/0x50e0 kernel/sched/core.c:6747 __schedule_loop kernel/sched/core.c:6824 [inline] schedule+0x163/0x360 kernel/sched/core.c:6839 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6896 __mutex_lock_common kernel/locking/mutex.c:664 [inline] __mutex_lock+0x7fa/0x1000 kernel/locking/mutex.c:732 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x208/0x480 net/netlink/af_netlink.c:2534 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x7f8/0x9a0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x8c3/0xcd0 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:727 __sys_sendto+0x365/0x4c0 net/socket.c:2180 __do_sys_sendto net/socket.c:2187 [inline] __se_sys_sendto net/socket.c:2183 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2183 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3234d8effc RSP: 002b:00007f3235b8bec0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f3235b8bfc0 RCX: 00007f3234d8effc RDX: 0000000000000020 RSI: 00007f3235b8c010 RDI: 0000000000000005 RBP: 0000000000000000 R08: 00007f3235b8bf14 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000005 R13: 00007f3235b8bf68 R14: 00007f3235b8c010 R15: 0000000000000000 Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings Showing all locks held in the system: 1 lock held by khungtaskd/31: #0: ffffffff8ed3a260 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #0: ffffffff8ed3a260 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #0: ffffffff8ed3a260 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x30/0x180 kernel/locking/lockdep.c:6761 2 locks held by kworker/u9:0/55: #0: ffff888035bb8948 ((wq_completion)nbd0-recv){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline] #0: ffff888035bb8948 ((wq_completion)nbd0-recv){+.+.}-{0:0}, at: process_scheduled_works+0x990/0x18e0 kernel/workqueue.c:3319 #1: ffffc9000100fc60 ((work_completion)(&args->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline] #1: ffffc9000100fc60 ((work_completion)(&args->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9cb/0x18e0 kernel/workqueue.c:3319 2 locks held by getty/5590: #0: ffff88814daed0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x53d/0x16b0 drivers/tty/n_tty.c:2211 2 locks held by kworker/u8:11/6891: #0: ffff8880b8739b18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:595 #1: ffffc90003edfc60 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline] #1: ffffc90003edfc60 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9cb/0x18e0 kernel/workqueue.c:3319 2 locks held by syz.0.1144/10079: #0: ffffffff90149950 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 3 locks held by syz.0.1144/10087: #0: ffffffff90149950 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 #2: ffff888029d17998 (&nbd->config_lock){+.+.}-{4:4}, at: nbd_disconnect_and_put+0x30/0x2d0 drivers/block/nbd.c:2234 2 locks held by syz.1.1145/10088: #0: ffffffff90149950 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 2 locks held by syz.2.1150/10104: #0: ffffffff90149950 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 2 locks held by syz.2.1150/10108: #0: ffffffff90149950 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 2 locks held by syz.4.1152/10120: #0: ffffffff90149950 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 2 locks held by syz.4.1152/10121: #0: ffffffff90149950 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 2 locks held by syz.4.1152/10122: #0: ffffffff90149950 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 2 locks held by syz.4.1152/10123: #0: ffffffff90149950 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 2 locks held by syz.3.1158/10143: #0: ffffffff90149950 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 2 locks held by syz.3.1158/10144: #0: ffffffff90149950 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 2 locks held by syz-executor/10148: #0: ffffffff90149950 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 2 locks held by syz-executor/10150: #0: ffffffff90149950 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 2 locks held by syz-executor/10166: #0: ffffffff90149950 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 2 locks held by syz-executor/10168: #0: ffffffff90149950 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 2 locks held by syz-executor/10183: #0: ffffffff90149950 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 2 locks held by syz-executor/10199: #0: ffffffff90149950 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 2 locks held by syz-executor/10201: #0: ffffffff90149950 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 2 locks held by syz-executor/10217: #0: ffffffff90149950 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 2 locks held by syz-executor/10219: #0: ffffffff90149950 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 2 locks held by syz-executor/10234: #0: ffffffff90149950 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 2 locks held by syz-executor/10244: #0: ffffffff90149950 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 2 locks held by syz-executor/10246: #0: ffffffff90149950 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 2 locks held by syz-executor/10262: #0: ffffffff90149950 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 2 locks held by syz-executor/10264: #0: ffffffff90149950 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 2 locks held by syz-executor/10279: #0: ffffffff90149950 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff90149808 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x125/0xf00 net/netlink/genetlink.c:1209 ============================================= NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.14.0-syzkaller-05877-g1a9239bb4253 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 nmi_cpu_backtrace+0x4ab/0x4e0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:236 [inline] watchdog+0x1058/0x10a0 kernel/hung_task.c:399 kthread+0x7a9/0x920 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline] NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline] NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:111