ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 watchdog: BUG: soft lockup - CPU#0 stuck for 245s! [kworker/u8:3:53] Modules linked in: irq event stamp: 6065448 hardirqs last enabled at (6065447): [] irqentry_exit+0x3b/0x90 kernel/entry/common.c:357 hardirqs last disabled at (6065448): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (6065446): [] softirq_handle_end kernel/softirq.c:407 [inline] softirqs last enabled at (6065446): [] handle_softirqs+0x5be/0x8e0 kernel/softirq.c:589 softirqs last disabled at (6065223): [] __do_softirq kernel/softirq.c:595 [inline] softirqs last disabled at (6065223): [] invoke_softirq kernel/softirq.c:435 [inline] softirqs last disabled at (6065223): [] __irq_exit_rcu+0x109/0x170 kernel/softirq.c:662 CPU: 0 UID: 0 PID: 53 Comm: kworker/u8:3 Not tainted 6.14.0-syzkaller-10764-gaa918db707fb #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+0x4cc/0x1290 kernel/smp.c:885 Code: 00 f3 90 41 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 de 0b 00 00 8b 43 08 31 ff 83 e0 01 41 89 c5 89 c6 e8 e7 1e 0c 00 45 85 ed <75> d0 e8 ad 23 0c 00 e8 a8 23 0c 00 8b 2c 24 bf 07 00 00 00 83 c5 RSP: 0018:ffffc90000be7938 EFLAGS: 00000202 RAX: 0000000000000000 RBX: ffff8880b853f880 RCX: ffffffff81af0389 RDX: ffff888020ea1e00 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffed10170a7f11 R13: 0000000000000001 R14: dffffc0000000000 R15: ffff8880b843b180 FS: 0000000000000000(0000) GS:ffff8881249da000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000000e182000 CR4: 0000000000350ef0 Call Trace: on_each_cpu_cond_mask+0x40/0x90 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+0x220/0x760 arch/x86/kernel/alternative.c:2665 text_poke_flush arch/x86/kernel/alternative.c:2856 [inline] text_poke_flush arch/x86/kernel/alternative.c:2853 [inline] text_poke_finish+0x30/0x40 arch/x86/kernel/alternative.c:2863 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 jump_label_update+0x1d7/0x400 kernel/jump_label.c:920 static_key_enable_cpuslocked+0x1b7/0x270 kernel/jump_label.c:210 static_key_enable+0x1a/0x20 kernel/jump_label.c:223 toggle_allocation_gate mm/kfence/core.c:850 [inline] toggle_allocation_gate+0xfa/0x280 mm/kfence/core.c:842 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400 kthread+0x3c5/0x780 kernel/kthread.c:464 ret_from_fork+0x48/0x80 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 CPU: 1 UID: 0 PID: 7813 Comm: syz.1.669 Not tainted 6.14.0-syzkaller-10764-gaa918db707fb #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:210 Code: 96 63 53 00 48 89 df 5b e9 ad ac 58 00 be 03 00 00 00 5b e9 a2 90 0f 03 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 8b 34 24 65 48 8b 15 c8 38 e9 11 65 8b 05 d9 38 e9 RSP: 0018:ffffc90000a08e10 EFLAGS: 00000046 RAX: 0000000000010002 RBX: ffff8880b8527940 RCX: 0000000000000000 RDX: ffff8880320e0000 RSI: ffffffff81a8290d RDI: 0000000000000001 RBP: ffff88805a673340 R08: 0000000000000000 R09: fffff520001411a8 R10: ffffffff9acf91bb R11: ffffffff9acf91b8 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88805a673340 R15: 0000000000000001 FS: 00007fd977e276c0(0000) GS:ffff888124ada000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000003c80 CR3: 0000000031fe4000 CR4: 0000000000350ef0 Call Trace: trace_hrtimer_start include/trace/events/timer.h:222 [inline] debug_activate kernel/time/hrtimer.c:487 [inline] enqueue_hrtimer+0x32/0x3b0 kernel/time/hrtimer.c:1090 __run_hrtimer kernel/time/hrtimer.c:1808 [inline] __hrtimer_run_queues+0x8ff/0xad0 kernel/time/hrtimer.c:1855 hrtimer_interrupt+0x397/0x8e0 kernel/time/hrtimer.c:1917 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] __sysvec_apic_timer_interrupt+0x10b/0x3f0 arch/x86/kernel/apic/apic.c:1055 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194 Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 c6 30 29 f6 48 89 df e8 6e 84 29 f6 f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 01 00 00 00 e8 55 f2 19 f6 65 8b 05 ee 98 35 08 85 c0 74 16 5b RSP: 0018:ffffc900049b7ca8 EFLAGS: 00000246 RAX: 0000000000000002 RBX: ffff8880b8427840 RCX: 0000000000000007 RDX: 0000000000000000 RSI: ffffffff8dbdf78c RDI: ffffffff8bf40760 RBP: 0000000000000283 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff9085b817 R11: 0000000000000000 R12: 0000000000000000 R13: 1bc16d40fb315329 R14: dffffc0000000000 R15: ffff8880b8427840 clock_was_set+0x599/0x870 kernel/time/hrtimer.c:974 do_settimeofday64+0x331/0x4f0 kernel/time/timekeeping.c:1395 do_sys_settimeofday64+0x1dc/0x260 kernel/time/time.c:195 __do_sys_clock_settime kernel/time/posix-timers.c:1140 [inline] __se_sys_clock_settime kernel/time/posix-timers.c:1124 [inline] __x64_sys_clock_settime+0x1c1/0x2a0 kernel/time/posix-timers.c:1124 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd976f8d169 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:00007fd977e27038 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3 RAX: ffffffffffffffda RBX: 00007fd9771a5fa0 RCX: 00007fd976f8d169 RDX: 0000000000000000 RSI: 0000200000003c80 RDI: 0000000000000000 RBP: 00007fd97700e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fd9771a5fa0 R15: 00007ffda8e81aa8