watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [syz.9.173:6933] Modules linked in: irq event stamp: 14045595 hardirqs last enabled at (14045594): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:214 hardirqs last disabled at (14045595): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1052 softirqs last enabled at (11063374): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last enabled at (11063374): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last enabled at (11063374): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 softirqs last disabled at (11063377): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (11063377): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (11063377): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 CPU: 1 UID: 0 PID: 6933 Comm: syz.9.173 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xa8/0x110 kernel/locking/spinlock.c:194 Code: 74 05 e8 8b 4e 7e f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 d3 7c 46 f6 65 8b 05 dc 08 25 07 85 c0 74 40 48 c7 04 24 0e 36 RSP: 0018:ffffc90000a08380 EFLAGS: 00000206 RAX: 193137fe4a5fc600 RBX: 0000000000000a02 RCX: 193137fe4a5fc600 RDX: 0000000000000002 RSI: ffffffff8d70ed15 RDI: 0000000000000001 RBP: ffffc90000a08418 R08: ffffffff8f7cee77 R09: 1ffffffff1ef9dce R10: dffffc0000000000 R11: fffffbfff1ef9dcf R12: dffffc0000000000 R13: ffff88805dc9da08 R14: ffff88804e8286d0 R15: 1ffff92000141070 FS: 00007f1839e826c0(0000) GS:ffff888126238000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fba12dd4f98 CR3: 00000000796d0000 CR4: 00000000003526f0 Call Trace: spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] wiphy_work_queue+0x1ea/0x390 net/wireless/core.c:1699 __ieee80211_queue_skb_to_iface+0xf1/0x280 net/mac80211/rx.c:233 ieee80211_queue_skb_to_iface net/mac80211/rx.c:255 [inline] ieee80211_rx_h_mgmt+0x493/0x650 net/mac80211/rx.c:4066 ieee80211_rx_handlers+0x668c/0xb760 net/mac80211/rx.c:4141 ieee80211_invoke_rx_handlers net/mac80211/rx.c:4171 [inline] ieee80211_prepare_and_rx_handle+0x3116/0x6770 net/mac80211/rx.c:5039 __ieee80211_rx_handle_packet net/mac80211/rx.c:5312 [inline] ieee80211_rx_list+0x230b/0x2c10 net/mac80211/rx.c:5451 ieee80211_rx_napi+0x1a8/0x3d0 net/mac80211/rx.c:5474 ieee80211_rx include/net/mac80211.h:5214 [inline] ieee80211_handle_queued_frames+0xe8/0x1f0 net/mac80211/main.c:453 tasklet_action_common+0x36c/0x580 kernel/softirq.c:925 handle_softirqs+0x286/0x870 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1052 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:preempt_schedule_irq+0xb0/0x150 kernel/sched/core.c:7256 Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 10 00 00 00 74 64 bf 01 00 00 00 e8 ab e6 47 f6 e8 e6 b9 7f f6 fb bf 01 00 00 00 5b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24 RSP: 0018:ffffc90004a1fa00 EFLAGS: 00000286 RAX: 193137fe4a5fc600 RBX: 0000000000000000 RCX: 193137fe4a5fc600 RDX: 0000000000000006 RSI: ffffffff8d70ed15 RDI: 0000000000000001 RBP: ffffc90004a1faa0 R08: ffffffff8f7cee77 R09: 1ffffffff1ef9dce R10: dffffc0000000000 R11: fffffbfff1ef9dcf R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000943f40 irqentry_exit+0x6f/0x90 kernel/entry/common.c:211 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:lock_acquire+0x175/0x360 kernel/locking/lockdep.c:5872 Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 0b 2a d1 10 <48> 3b 44 24 58 0f 85 f2 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e RSP: 0018:ffffc90004a1fb68 EFLAGS: 00000206 RAX: 193137fe4a5fc600 RBX: 0000000000000000 RCX: 193137fe4a5fc600 RDX: 0000000000000000 RSI: ffffffff8d8f5a0a RDI: ffffffff8bbf0de0 RBP: ffffffff821821cd R08: 0000000000000000 R09: ffffffff821821cd R10: 000000000000000c R11: ffffffff81ac31b0 R12: 0000000000000000 R13: ffffffff8e058960 R14: 0000000000000001 R15: 0000000000000246 fs_reclaim_acquire+0x99/0x100 mm/page_alloc.c:4286 might_alloc include/linux/sched/mm.h:318 [inline] slab_pre_alloc_hook mm/slub.c:4929 [inline] slab_alloc_node mm/slub.c:5264 [inline] __do_kmalloc_node mm/slub.c:5649 [inline] __kmalloc_noprof+0x9c/0x7f0 mm/slub.c:5662 kmalloc_noprof include/linux/slab.h:961 [inline] kzalloc_noprof include/linux/slab.h:1094 [inline] lsm_blob_alloc security/security.c:690 [inline] lsm_sock_alloc security/security.c:4922 [inline] security_sk_alloc+0x52/0x390 security/security.c:4938 sk_prot_alloc+0x101/0x220 net/core/sock.c:2242 sk_alloc+0x3a/0x370 net/core/sock.c:2295 __netlink_create+0x65/0x260 net/netlink/af_netlink.c:628 netlink_create+0x3ca/0x590 net/netlink/af_netlink.c:686 __sock_create+0x4b3/0x9f0 net/socket.c:1605 sock_create net/socket.c:1663 [inline] __sys_socket_create net/socket.c:1700 [inline] __sys_socket+0xd7/0x1b0 net/socket.c:1747 __do_sys_socket net/socket.c:1761 [inline] __se_sys_socket net/socket.c:1759 [inline] __x64_sys_socket+0x7a/0x90 net/socket.c:1759 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1838f8f749 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:00007f1839e82038 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007f18391e5fa0 RCX: 00007f1838f8f749 RDX: 000000000000000c RSI: 0000000000000003 RDI: 0000000000000010 RBP: 00007f1839013f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f18391e6038 R14: 00007f18391e5fa0 R15: 00007ffc3a6741d8 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 6923 Comm: syz.7.171 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:36 [inline] RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:139 [inline] RIP: 0010:wrmsrq arch/x86/include/asm/msr.h:199 [inline] RIP: 0010:native_apic_msr_write+0x39/0x50 arch/x86/include/asm/apic.h:212 Code: 74 2a 83 ff 30 74 25 eb 10 81 ff d0 00 00 00 74 1b 81 ff e0 00 00 00 74 13 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <66> 90 e9 10 c0 d7 09 cc f3 0f 1e fa 89 f6 31 d2 e9 f2 ed 50 03 66 RSP: 0018:ffffc90000007248 EFLAGS: 00000046 RAX: 0000000000000083 RBX: ffff8880b8823900 RCX: 0000000000000838 RDX: 0000000000000000 RSI: 0000000000000083 RDI: 0000000000000838 RBP: 0000000000000000 R08: ffffc90000006d97 R09: 0000000000000000 R10: ffffc90000006d88 R11: ffffffff8170d4c0 R12: 000000001000614e R13: dffffc0000000000 R14: 0000000000000083 R15: 0000000000000020 FS: 00007f230627a6c0(0000) GS:ffff888126138000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555570d775c8 CR3: 000000004b5c8000 CR4: 00000000003526f0 DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: apic_write arch/x86/include/asm/apic.h:409 [inline] lapic_next_event+0x11/0x20 arch/x86/kernel/apic/apic.c:416 clockevents_program_event+0x1cf/0x360 kernel/time/clockevents.c:334 hrtimer_interrupt+0x620/0xaa0 kernel/time/hrtimer.c:1916 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1041 [inline] __sysvec_apic_timer_interrupt+0x10b/0x410 arch/x86/kernel/apic/apic.c:1058 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1052 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:__read_once_word_nocheck+0x3/0x10 include/asm-generic/rwonce.h:67 Code: b2 00 48 ba 00 00 00 00 00 fc ff df e9 88 fc ff ff 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 07 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc900000074b0 EFLAGS: 00000202 RAX: ffffffff8184cefa RBX: ffffc90000007f58 RCX: 1ffff92000000e01 RDX: ffffffff900b8ac2 RSI: 0000000000000002 RDI: ffffc90000007f58 RBP: 1ffff92000000eb2 R08: 0000000000000001 R09: ffffffff81738c45 R10: ffffc900000070c8 R11: ffffffff81ac31b0 R12: ffffc90000008000 R13: 1ffff92000000eb3 R14: ffffc90000007588 R15: ffffc90000000000 deref_stack_reg arch/x86/kernel/unwind_orc.c:406 [inline] unwind_next_frame+0xc3c/0x2390 arch/x86/kernel/unwind_orc.c:585 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 ref_tracker_alloc+0x17d/0x460 lib/ref_tracker.c:277 __netdev_tracker_alloc include/linux/netdevice.h:4375 [inline] netdev_hold include/linux/netdevice.h:4404 [inline] dst_init+0xd9/0x450 net/core/dst.c:52 dst_alloc+0x12a/0x170 net/core/dst.c:93 ip6_dst_alloc net/ipv6/route.c:342 [inline] icmp6_dst_alloc+0x75/0x420 net/ipv6/route.c:3322 ndisc_send_skb+0x3f1/0x1510 net/ipv6/ndisc.c:491 addrconf_rs_timer+0x369/0x670 net/ipv6/addrconf.c:4037 call_timer_fn+0x17e/0x5f0 kernel/time/timer.c:1747 expire_timers kernel/time/timer.c:1798 [inline] __run_timers kernel/time/timer.c:2372 [inline] __run_timer_base+0x61a/0x860 kernel/time/timer.c:2384 run_timer_base kernel/time/timer.c:2393 [inline] run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2403 handle_softirqs+0x286/0x870 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1052 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:find_stack lib/stackdepot.c:602 [inline] RIP: 0010:stack_depot_save_flags+0x1a5/0x860 lib/stackdepot.c:668 Code: 0b 90 31 c0 e9 bb 02 00 00 31 f6 4c 89 54 24 18 e8 60 04 c8 ff 4c 8b 54 24 18 8b 74 24 04 85 db 75 5d 4d 8b 3f 4d 39 e7 74 52 <41> 39 6f 10 75 f2 45 39 57 14 75 ec 31 c0 49 8b 0c c6 49 3b 4c c7 RSP: 0018:ffffc9000490ed88 EFLAGS: 00010287 RAX: ffff88823ae00000 RBX: 0000000000000000 RCX: 0000000000294c60 RDX: 00000000bf46438b RSI: 0000000000000000 RDI: 000000003f7844ef RBP: 000000002a7294c6 R08: 000000008736e791 R09: 00000000f4fb2e82 R10: 0000000000000007 R11: fffff52000921d0b R12: ffff88823b094c60 R13: 0000000000000007 R14: ffffc9000490edf0 R15: ffff8880248b6060 kasan_save_stack+0x4d/0x60 mm/kasan/common.c:57 kasan_record_aux_stack+0xbd/0xd0 mm/kasan/generic.c:559 __call_rcu_common kernel/rcu/tree.c:3123 [inline] call_rcu+0x157/0x9c0 kernel/rcu/tree.c:3243 context_switch kernel/sched/core.c:5328 [inline] __schedule+0x17a0/0x4cc0 kernel/sched/core.c:6929 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7256 irqentry_exit+0x6f/0x90 kernel/entry/common.c:211 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:lock_acquire+0x185/0x360 kernel/locking/lockdep.c:5872 Code: 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 0b 2a d1 10 48 3b 44 24 58 0f 85 f2 00 00 00 48 83 c4 60 5b <41> 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 65 8b 05 35 6a d1 10 RSP: 0018:ffffc9000490f500 EFLAGS: 00000282 RAX: 69c523a9369cde00 RBX: ffffffff816a29b4 RCX: 69c523a9369cde00 RDX: 0000000000000001 RSI: ffffffff8d8f5a0a RDI: ffffffff8bbf0de0 RBP: ffffffff81738c45 R08: 0000000000000000 R09: ffffffff81738c45 R10: ffffc9000490f148 R11: fffff52000921e2b R12: 0000000000000002 R13: ffffffff8df3d6e0 R14: 0000000000000000 R15: 0000000000000246 rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:867 [inline] class_rcu_constructor include/linux/rcupdate.h:1195 [inline] unwind_next_frame+0xc2/0x2390 arch/x86/kernel/unwind_orc.c:479 __unwind_start+0x5b9/0x760 arch/x86/kernel/unwind_orc.c:758 unwind_start arch/x86/include/asm/unwind.h:64 [inline] arch_stack_walk+0xe4/0x150 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:56 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:77 unpoison_slab_object mm/kasan/common.c:342 [inline] __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:368 kasan_slab_alloc include/linux/kasan.h:252 [inline] slab_post_alloc_hook mm/slub.c:4978 [inline] slab_alloc_node mm/slub.c:5288 [inline] kmem_cache_alloc_noprof+0x367/0x6e0 mm/slub.c:5295 taskstats_tgid_alloc kernel/taskstats.c:576 [inline] taskstats_exit+0x14a/0xa30 kernel/taskstats.c:615 do_exit+0x630/0x2300 kernel/exit.c:941 do_group_exit+0x21c/0x2d0 kernel/exit.c:1107 get_signal+0x1285/0x1340 kernel/signal.c:3034 arch_do_signal_or_restart+0xa0/0x790 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop+0x72/0x130 kernel/entry/common.c:40 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline] do_syscall_64+0x2bd/0xfa0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f230538f749 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:00007f230627a0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f23055e6098 RCX: 00007f230538f749 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f23055e6098 RBP: 00007f23055e6090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f23055e6128 R14: 00007fff1b99ad90 R15: 00007fff1b99ae78