watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [syz.7.75:6357] Modules linked in: irq event stamp: 14821939 hardirqs last enabled at (14821938): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (14821939): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (14817146): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (14817146): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (14817146): [] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 softirqs last disabled at (14817149): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (14817149): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (14817149): [] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 CPU: 0 UID: 0 PID: 6357 Comm: syz.7.75 Not tainted 6.14.0-syzkaller-g06a22366d6a1 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:rcu_read_unlock_special+0x8a/0x570 kernel/rcu/tree_plugin.h:694 Code: f1 f1 f1 00 f2 f2 f2 49 89 04 14 66 41 c7 44 14 09 f3 f3 41 c6 44 14 0b f3 65 44 8b 3d 3f 0c bf 11 41 f7 c7 00 00 f0 00 74 44 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 22 00 00 00 00 66 42 c7 44 22 RSP: 0018:ffffc90000007b00 EFLAGS: 00000206 RAX: c7425fc026893a00 RBX: 1ffff92000000f68 RCX: ffffffff93689020 RDX: dffffc0000000000 RSI: ffffffff8e69b310 RDI: ffffffff8ca1b0e0 RBP: ffffc90000007bd8 R08: ffffffff905fcf77 R09: 1ffffffff20bf9ee R10: dffffc0000000000 R11: fffffbfff20bf9ef R12: 1ffff92000000f64 R13: ffff88801efb2260 R14: ffffc90000007b40 R15: ffffffff8ed42d00 FS: 00007f010a8d16c0(0000) GS:ffff888124f97000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fedc6778ab8 CR3: 000000007cec4000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __rcu_read_unlock+0xa1/0x110 kernel/rcu/tree_plugin.h:438 mac80211_hwsim_beacon+0xd4/0x1f0 drivers/net/wireless/virtual/mac80211_hwsim.c:2347 __run_hrtimer kernel/time/hrtimer.c:1791 [inline] __hrtimer_run_queues+0x5a6/0xd40 kernel/time/hrtimer.c:1855 hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1872 handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline] sysvec_irq_work+0xa3/0xc0 arch/x86/kernel/irq_work.c:17 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738 RIP: 0010:futex_read_inatomic kernel/futex/futex.h:-1 [inline] RIP: 0010:futex_get_value_locked kernel/futex/futex.h:281 [inline] RIP: 0010:futex_wait_setup+0xf5/0x2a0 kernel/futex/waitwake.c:623 Code: 0f b6 04 06 84 c0 0f 85 f5 00 00 00 41 ff 07 48 b8 00 f0 ff ff ff 7f 00 00 4c 89 e5 49 39 c4 4c 0f 47 e0 0f 01 cb 41 8b 04 24 <89> 04 24 e8 73 69 0c 00 0f 01 ca 41 b4 01 48 b8 00 00 00 00 00 fc RSP: 0018:ffffc9000429fa20 EFLAGS: 00040283 RAX: 0000000000000000 RBX: ffffc9000429fb80 RCX: 0000000000000001 RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc9000429f960 RBP: 00007f0109ba5fa8 R08: 0000000000000003 R09: fffff52000853f2c R10: dffffc0000000000 R11: fffff52000853f2c R12: 00007f0109ba5fa8 R13: 0000000000000000 R14: 1ffff11003df66b4 R15: ffff88801efb35a4 __futex_wait+0x13e/0x320 kernel/futex/waitwake.c:663 futex_wait+0x103/0x370 kernel/futex/waitwake.c:696 do_futex+0x37c/0x5a0 kernel/futex/syscalls.c:102 __do_sys_futex kernel/futex/syscalls.c:179 [inline] __se_sys_futex+0x436/0x4c0 kernel/futex/syscalls.c:160 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: 0033:0x7f010998d169 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:00007f010a8d10e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00007f0109ba5fa8 RCX: 00007f010998d169 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f0109ba5fa8 RBP: 00007f0109ba5fa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0109ba5fac R13: 0000000000000000 R14: 00007ffee5159b80 R15: 00007ffee5159c68 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 53 Comm: kworker/u8:3 Not tainted 6.14.0-syzkaller-g06a22366d6a1 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline] RIP: 0010:smp_call_function_many_cond+0x1bac/0x2d40 kernel/smp.c:885 Code: 03 84 c0 75 7e 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 c8 e2 0b 00 41 83 e4 01 4c 8b 64 24 68 75 07 e8 78 de 0b 00 eb 41 f3 90 <48> b8 00 00 00 00 00 fc ff df 0f b6 04 03 84 c0 75 11 41 f7 45 00 RSP: 0018:ffffc90000bf7640 EFLAGS: 00000293 RAX: ffffffff81b7792d RBX: 1ffff110170c823d RCX: ffff88801b760000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90000bf7840 R08: ffffffff81b778f8 R09: 1ffffffff20bf9ee R10: dffffc0000000000 R11: fffffbfff20bf9ef R12: ffff8880b873ad08 R13: ffff8880b86411e8 R14: ffff8880b873ad00 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888125097000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f57bd81f575 CR3: 000000000eb38000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1052 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:2455 [inline] text_poke_bp_batch+0x354/0xb30 arch/x86/kernel/alternative.c:2665 text_poke_flush arch/x86/kernel/alternative.c:2856 [inline] text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2863 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_enable_cpuslocked+0x136/0x260 kernel/jump_label.c:210 static_key_enable+0x1a/0x20 kernel/jump_label.c:223 toggle_allocation_gate+0xc0/0x250 mm/kfence/core.c:850 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xac3/0x18e0 kernel/workqueue.c:3319 worker_thread+0x870/0xd50 kernel/workqueue.c:3400 kthread+0x7b7/0x940 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