rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P11023 1-.... } 2635 jiffies s: 228717 root: 0x2/T rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 15422 Comm: syz-executor Not tainted 6.10.0-rc5-next-20240624-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 RIP: 0010:io_serial_in+0x76/0xb0 drivers/tty/serial/8250/8250_port.c:406 Code: 90 ef 53 fc 89 e9 41 d3 e6 48 83 c3 40 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 b1 91 ba fc 44 03 33 44 89 f2 ec <0f> b6 c0 5b 41 5e 41 5f 5d c3 cc cc cc cc 89 e9 80 e1 07 38 c1 7c RSP: 0018:ffffc90000a18298 EFLAGS: 00000002 RAX: 1ffffffff2961100 RBX: ffffffff94b08a00 RCX: 0000000000000000 RDX: 00000000000003fd RSI: 0000000000000000 RDI: 0000000000000020 RBP: 0000000000000000 R08: ffffffff853f8326 R09: 1ffff11003f7b046 R10: dffffc0000000000 R11: ffffffff853f82e0 R12: dffffc0000000000 R13: ffffffff9481ce40 R14: 00000000000003fd R15: dffffc0000000000 FS: 0000555569186500(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f77a3b66ca3 CR3: 000000007058a000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: serial_in drivers/tty/serial/8250/8250.h:137 [inline] serial_lsr_in drivers/tty/serial/8250/8250.h:159 [inline] wait_for_lsr drivers/tty/serial/8250/8250_port.c:2068 [inline] serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3315 [inline] serial8250_console_write+0x1373/0x1ed0 drivers/tty/serial/8250/8250_port.c:3393 console_emit_next_record kernel/printk/printk.c:3030 [inline] console_flush_all+0x880/0xf50 kernel/printk/printk.c:3102 console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3173 vprintk_emit+0x7a1/0x900 kernel/printk/printk.c:2423 _printk+0xd5/0x120 kernel/printk/printk.c:2450 printk_stack_address arch/x86/kernel/dumpstack.c:72 [inline] show_trace_log_lvl+0x43a/0x520 arch/x86/kernel/dumpstack.c:285 sched_show_task+0x578/0x740 kernel/sched/core.c:7506 report_rtnl_holders+0x1ba/0x2d0 net/core/rtnetlink.c:104 call_timer_fn+0x18e/0x650 kernel/time/timer.c:1792 expire_timers kernel/time/timer.c:1843 [inline] __run_timers kernel/time/timer.c:2417 [inline] __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2428 run_timer_base kernel/time/timer.c:2437 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2447 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:format_decode+0x5ba/0x1bb0 lib/vsprintf.c:2575 Code: 89 e5 4d 89 e7 49 c1 ef 03 43 0f b6 04 37 84 c0 0f 85 bc 00 00 00 41 0f b6 5d 00 48 89 df 48 c7 c6 a0 6b 96 8f e8 b6 93 0c f6 <83> fb 2a 7e 24 83 fb 2b 74 60 83 fb 30 74 39 83 fb 2d 0f 85 f4 00 RSP: 0018:ffffc9000b75f520 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000075 RCX: 000000008bcb8d02 RDX: 0000000000000005 RSI: ffffffff8f966ba0 RDI: 0000000000000075 RBP: ffffc9000b75f610 R08: 0000000000000001 R09: ffffffff8b86e48a R10: 0000000000000005 R11: ffff88802be7bc00 R12: ffffffff8bcb8d62 R13: ffffffff8bcb8d62 R14: dffffc0000000000 R15: 1ffffffff17971ac vsnprintf+0x14f/0x1da0 lib/vsprintf.c:2776 sprintf+0xda/0x120 lib/vsprintf.c:3028 print_syslog kernel/printk/printk.c:1347 [inline] info_print_prefix+0xde/0x310 kernel/printk/printk.c:1377 get_record_print_text_size kernel/printk/printk.c:1517 [inline] find_first_fitting_seq+0x1b2/0x580 kernel/printk/printk.c:1546 syslog_print_all+0x1ae/0x7e0 kernel/printk/printk.c:1694 do_syslog+0x455/0x810 kernel/printk/printk.c:1772 __do_sys_syslog kernel/printk/printk.c:1850 [inline] __se_sys_syslog kernel/printk/printk.c:1848 [inline] __x64_sys_syslog+0x7c/0x90 kernel/printk/printk.c:1848 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f92dc175d39 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd5b02f468 EFLAGS: 00000246 ORIG_RAX: 0000000000000067 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f92dc175d39 RDX: 000000000000003f RSI: 00007ffd5b02f490 RDI: 0000000000000003 RBP: 0000000000000002 R08: 7fffffffffffffff R09: 00007ffd5b02f718 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd5b02f490 R13: 00007ffd5b02f718 R14: 0000000000000009 R15: 0000000000000009 rtnl_lock net/core/rtnetlink.c:147 [inline] rtnl_dumpit+0x1bd/0x300 net/core/rtnetlink.c:6585 netlink_dump+0x647/0xd80 net/netlink/af_netlink.c:2325 netlink_recvmsg+0x6bb/0x11d0 net/netlink/af_netlink.c:1983 sock_recvmsg_nosec net/socket.c:1046 [inline] sock_recvmsg+0x22f/0x280 net/socket.c:1068 ____sys_recvmsg+0x1db/0x470 net/socket.c:2816 ___sys_recvmsg net/socket.c:2858 [inline] __sys_recvmsg+0x2f0/0x3e0 net/socket.c:2888 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff3323f591e RSP: 002b:00007ffc2bfa6898 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 00007ffc2bfa79c0 RCX: 00007ff3323f591e RDX: 0000000000000000 RSI: 00007ffc2bfa78e0 RDI: 0000000000000018 RBP: 00007ffc2bfa7950 R08: 0000000000000000 R09: 0000000080000000 R10: 0000000000000101 R11: 0000000000000246 R12: 0000000000000f00 R13: 00007ffc2bfa78c4 R14: 00007ffc2bfa78e0 R15: 00007ffc2bfa78d0 DEBUG: waiting rtnl_mutex for 11572 jiffies. task:kworker/1:6 state:D stack:19600 pid:5150 tgid:5150 ppid:2 flags:0x00004000 Workqueue: events linkwatch_event Call Trace: context_switch kernel/sched/core.c:5249 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6597 __schedule_loop kernel/sched/core.c:6674 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6689 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6746 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 linkwatch_event+0xe/0x60 net/core/link_watch.c:276 process_one_work kernel/workqueue.c:3224 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3305 worker_thread+0x86d/0xd40 kernel/workqueue.c:3383 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 DEBUG: waiting rtnl_mutex for 11288 jiffies. task:syz.2.1919 state:D stack:25856 pid:15355 tgid:15352 ppid:11553 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5249 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6597 __schedule_loop kernel/sched/core.c:6674 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6689 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6746 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6723 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f0/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2597 ___sys_sendmsg net/socket.c:2651 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1471775d39 RSP: 002b:00007f14724c3048 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f1471904140 RCX: 00007f1471775d39 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000008 RBP: 00007f14717f6766 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f1471904140 R15: 00007ffc3068ed28 DEBUG: waiting rtnl_mutex for 11318 jiffies. task:kworker/u8:7 state:D stack:21008 pid:2439 tgid:2439 ppid:2 flags:0x00004000 Workqueue: ipv6_addrconf addrconf_verify_work Call Trace: context_switch kernel/sched/core.c:5249 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6597 __schedule_loop kernel/sched/core.c:6674 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6689 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6746 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 addrconf_verify_work+0x19/0x30 net/ipv6/addrconf.c:4733 process_one_work kernel/workqueue.c:3224 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3305 worker_thread+0x86d/0xd40 kernel/workqueue.c:3383 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 DEBUG: waiting rtnl_mutex for 11327 jiffies. task:syz.2.1919 state:D stack:25744 pid:15356 tgid:15352 ppid:11553 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5249 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6597 __schedule_loop kernel/sched/core.c:6674 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6689 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6746 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 nl80211_pre_doit+0x5f/0x8b0 net/wireless/nl80211.c:16451 genl_family_rcv_msg_doit net/netlink/genetlink.c:1110 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0xaaa/0xec0 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f0/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2597 ___sys_sendmsg net/socket.c:2651 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1471775d39 RSP: 002b:00007f14724a2048 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f1471904210 RCX: 00007f1471775d39 RDX: 0000000000000000 RSI: 0000000020000440 RDI: 0000000000000006 RBP: 00007f14717f6766 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f1471904210 R15: 00007ffc3068ed28 DEBUG: waiting rtnl_mutex for 11216 jiffies. task:syz.0.1921 state:D stack:25232 pid:15400 tgid:15397 ppid:10812 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5249 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6597 __schedule_loop kernel/sched/core.c:6674 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6689 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6746 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6723 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f0/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2597 ___sys_sendmsg net/socket.c:2651 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8796775d39 RSP: 002b:00007f87961de048 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f8796904070 RCX: 00007f8796775d39 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000008 RBP: 00007f87967f6766 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f8796904070 R15: 00007fff848b5c08 DEBUG: waiting rtnl_mutex for 11241 jiffies. task:syz.0.1921 state:D stack:24784 pid:15398 tgid:15397 ppid:10812 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5249 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6597 __schedule_loop kernel/sched/core.c:6674 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6689 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6746 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 nl80211_pre_doit+0x5f/0x8b0 net/wireless/nl80211.c:16451 genl_family_rcv_msg_doit net/netlink/genetlink.c:1110 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0xaaa/0xec0 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f0/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2597 ___sys_sendmsg net/socket.c:2651 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8796775d39 RSP: 002b:00007f87961ff048 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f8796903fa0 RCX: 00007f8796775d39 RDX: 0000000000000000 RSI: 0000000020000440 RDI: 0000000000000006 RBP: 00007f87967f6766 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f8796903fa0 R15: 00007fff848b5c08 DEBUG: waiting rtnl_mutex for 10784 jiffies. task:kworker/1:7 state:D stack:17800 pid:5151 tgid:5151 ppid:2 flags:0x00004000 Workqueue: events_power_efficient reg_check_chans_work Call Trace: context_switch kernel/sched/core.c:5249 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6597 __schedule_loop kernel/sched/core.c:6674 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6689 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6746 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 reg_check_chans_work+0x99/0xfd0 net/wireless/reg.c:2480 process_one_work kernel/workqueue.c:3224 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3305 worker_thread+0x86d/0xd40 kernel/workqueue.c:3383 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 DEBUG: waiting rtnl_mutex for 10761 jiffies. task:kworker/0:4 state:D stack:18344 pid:5101 tgid:5101 ppid:2 flags:0x00004000 Workqueue: events switchdev_deferred_process_work Call Trace: context_switch kernel/sched/core.c:5249 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6597 __schedule_loop kernel/sched/core.c:6674 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6689 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6746 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104 process_one_work kernel/workqueue.c:3224 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3305 worker_thread+0x86d/0xd40 kernel/workqueue.c:3383 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 DEBUG: waiting rtnl_mutex for 2846 jiffies. task:syz-executor state:D stack:24992 pid:15425 tgid:15425 ppid:1 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5249 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6597 __schedule_loop kernel/sched/core.c:6674 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6689 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6746 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6723 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f0/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 __sys_sendto+0x3a4/0x4f0 net/socket.c:2204 __do_sys_sendto net/socket.c:2216 [inline] __se_sys_sendto net/socket.c:2212 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2212 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0ddb577acc RSP: 002b:00007ffe73665380 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f0ddc234620 RCX: 00007f0ddb577acc RDX: 0000000000000028 RSI: 00007f0ddc234670 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffe736653d4 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000000 R14: 00007f0ddc234670 R15: 0000000000000000 DEBUG: waiting rtnl_mutex for 2876 jiffies. task:syz-executor state:D stack:24992 pid:15426 tgid:15426 ppid:1 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5249 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6597 __schedule_loop kernel/sched/core.c:6674 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6689 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6746 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6723 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f0/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 __sys_sendto+0x3a4/0x4f0 net/socket.c:2204 __do_sys_sendto net/socket.c:2216 [inline] __se_sys_sendto net/socket.c:2212 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2212 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd57f177acc RSP: 002b:00007ffcd8365710 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fd57fe34620 RCX: 00007fd57f177acc RDX: 0000000000000028 RSI: 00007fd57fe34670 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffcd8365764 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000000 R14: 00007fd57fe34670 R15: 0000000000000000 DEBUG: waiting rtnl_mutex for 2905 jiffies. task:syz-executor state:D stack:24992 pid:15429 tgid:15429 ppid:15424 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5249 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6597 __schedule_loop kernel/sched/core.c:6674 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6689 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6746 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6723 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f0/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 __sys_sendto+0x3a4/0x4f0 net/socket.c:2204 __do_sys_sendto net/socket.c:2216 [inline] __se_sys_sendto net/socket.c:2212 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2212 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f68da177acc RSP: 002b:00007ffead75d900 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f68dae34620 RCX: 00007f68da177acc RDX: 0000000000000028 RSI: 00007f68dae34670 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffead75d954 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000000 R14: 00007f68dae34670 R15: 0000000000000000 DEBUG: waiting rtnl_mutex for 2931 jiffies. task:syz-executor state:D stack:24496 pid:15434 tgid:15434 ppid:15423 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5249 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6597 __schedule_loop kernel/sched/core.c:6674 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6689 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6746 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6723 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f0/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 __sys_sendto+0x3a4/0x4f0 net/socket.c:2204 __do_sys_sendto net/socket.c:2216 [inline] __se_sys_sendto net/socket.c:2212 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2212 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3774577acc RSP: 002b:00007ffe51b63e60 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f3775234620 RCX: 00007f3774577acc RDX: 0000000000000028 RSI: 00007f3775234670 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffe51b63eb4 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000000 R14: 00007f3775234670 R15: 0000000000000000 DEBUG: waiting rtnl_mutex for 2668 jiffies. task:syz-executor state:D stack:24992 pid:15442 tgid:15442 ppid:15441 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5249 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6597 __schedule_loop kernel/sched/core.c:6674 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6689 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6746 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6723 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f0/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 __sys_sendto+0x3a4/0x4f0 net/socket.c:2204 __do_sys_sendto net/socket.c:2216 [inline] __se_sys_sendto net/socket.c:2212 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2212 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f75f9b77acc RSP: 002b:00007ffc3b8ba9a0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f75fa834620 RCX: 00007f75f9b77acc RDX: 0000000000000028 RSI: 00007f75fa834670 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffc3b8ba9f4 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000000 R14: 00007f75fa834670 R15: 0000000000000000 Showing all locks held in the system: 1 lock held by pool_workqueue_/3: #0: ffffffff8e33a9f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline] #0: ffffffff8e33a9f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:959 5 locks held by kworker/u8:0/11: #0: ffff888015edd948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3199 [inline] #0: ffff888015edd948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3305 #1: ffffc90000107d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3200 [inline] #1: ffffc90000107d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3305 #2: ffffffff8f5ec210 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:594 #3: ffffffff8f5f8ac8 (rtnl_mutex){+.+.}-{3:3}, at: default_device_exit_batch+0xe9/0xa90 net/core/dev.c:11796 #4: ffffffff8e33a9f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline] #4: ffffffff8e33a9f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:959 3 locks held by kworker/u8:7/2439: #0: ffff888029e0b948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3199 [inline] #0: ffff888029e0b948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3305 #1: ffffc90009207d00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3200 [inline] #1: ffffc90009207d00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3305 #2: ffffffff8f5f8ac8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x19/0x30 net/ipv6/addrconf.c:4733 2 locks held by dhcpcd/4760: #0: ffff88807f7f6678 (nlk_cb_mutex-ROUTE){+.+.}-{3:3}, at: netlink_dump+0xcb/0xd80 net/netlink/af_netlink.c:2271 #1: ffffffff8f5f8ac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:147 [inline] #1: ffffffff8f5f8ac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_dumpit+0x1bd/0x300 net/core/rtnetlink.c:6585 2 locks held by getty/4855: #0: ffff88802a5b40a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211 3 locks held by kworker/0:4/5101: #0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3199 [inline] #0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3305 #1: ffffc900037e7d00 (deferred_process_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3200 [inline] #1: ffffc900037e7d00 (deferred_process_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3305 #2: ffffffff8f5f8ac8 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104 3 locks held by kworker/1:6/5150: #0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3199 [inline] #0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3305 #1: ffffc90003f67d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3200 [inline] #1: ffffc90003f67d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3305 #2: ffffffff8f5f8ac8 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276 3 locks held by kworker/1:7/5151: #0: ffff888015081948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3199 [inline] #0: ffff888015081948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3305 #1: ffffc90003f77d00 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3200 [inline] #1: ffffc90003f77d00 ((reg_check_chans).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3305 #2: ffffffff8f5f8ac8 (rtnl_mutex){+.+.}-{3:3}, at: reg_check_chans_work+0x99/0xfd0 net/wireless/reg.c:2480 3 locks held by kworker/u9:0/9885: #0: ffff88802e7b2148 ((wq_completion)hci3){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3199 [inline] #0: ffff88802e7b2148 ((wq_completion)hci3){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3305 #1: ffffc90004087d00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3200 [inline] #1: ffffc90004087d00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3305 #2: ffff88806fe08d88 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x1ec/0x400 net/bluetooth/hci_sync.c:309 3 locks held by kworker/1:3/11023: 1 lock held by syz-executor/15292: #0: ffffffff8f5f8ac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6723 1 lock held by syz.2.1919/15355: #0: ffffffff8f5f8ac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6723 2 locks held by syz.2.1919/15356: #0: ffffffff8f662230 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8f5f8ac8 (rtnl_mutex){+.+.}-{3:3}, at: nl80211_pre_doit+0x5f/0x8b0 net/wireless/nl80211.c:16451 2 locks held by syz.0.1921/15398: #0: ffffffff8f662230 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8f5f8ac8 (rtnl_mutex){+.+.}-{3:3}, at: nl80211_pre_doit+0x5f/0x8b0 net/wireless/nl80211.c:16451 1 lock held by syz.0.1921/15400: #0: ffffffff8f5f8ac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6723 3 locks held by syz-executor/15422: #0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 kernel/time/timer.c:1789 #1: ffffffff8e335620 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:333 [inline] #1: ffffffff8e335620 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:845 [inline] #1: ffffffff8e335620 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 net/core/rtnetlink.c:95 #2: ffffffff8e335620 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:333 [inline] #2: ffffffff8e335620 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:845 [inline] #2: ffffffff8e335620 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6688 1 lock held by syz-executor/15425: #0: ffffffff8f5f8ac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6723 1 lock held by syz-executor/15426: #0: ffffffff8f5f8ac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6723 1 lock held by syz-executor/15429: #0: ffffffff8f5f8ac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6723 1 lock held by syz-executor/15434: #0: ffffffff8f5f8ac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6723 1 lock held by syz-executor/15442: #0: ffffffff8f5f8ac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6723 3 locks held by syz-executor/15444: #0: ffff88802f39a420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409 #1: ffff88807df603f8 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:834 [inline] #1: ffff88807df603f8 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: filename_create+0x260/0x540 fs/namei.c:3917 #2: ffff88802f39e950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x203f/0x22a0 fs/jbd2/transaction.c:463 =============================================