watchdog: BUG: soft lockup - CPU#0 stuck for 120s! [syz.4.34:6236] Modules linked in: irq event stamp: 23174883 hardirqs last enabled at (23174882): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 hardirqs last disabled at (23174883): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1088 softirqs last enabled at (23167092): [] __do_softirq kernel/softirq.c:612 [inline] softirqs last enabled at (23167092): [] invoke_softirq kernel/softirq.c:452 [inline] softirqs last enabled at (23167092): [] __irq_exit_rcu+0xc7/0x190 kernel/softirq.c:661 softirqs last disabled at (23167095): [] __do_softirq kernel/softirq.c:612 [inline] softirqs last disabled at (23167095): [] invoke_softirq kernel/softirq.c:452 [inline] softirqs last disabled at (23167095): [] __irq_exit_rcu+0xc7/0x190 kernel/softirq.c:661 CPU: 0 PID: 6236 Comm: syz.4.34 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:check_preemption_disabled+0x1/0x110 lib/smp_processor_id.c:13 Code: e9 6e ff ff ff cc cc cc cc f3 0f 1e fa 48 c7 c7 a0 6a fc 8a 48 c7 c6 e0 6a fc 8a eb 0c 66 2e 0f 1f 84 00 00 00 00 00 66 90 55 <41> 57 41 56 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 RSP: 0018:ffffc90000007e30 EFLAGS: 00000206 RAX: ffffffff8ca0a0c0 RBX: 0000000000000102 RCX: 0000000000000002 RDX: 0000000000000000 RSI: ffffffff8aa9b5e0 RDI: ffffffff8afc6b00 RBP: ffffc90000007f50 R08: ffffffff8e4a8d6f R09: 1ffffffff1c951ad R10: dffffc0000000000 R11: fffffbfff1c951ae R12: 0000000000000006 R13: 0000000000000003 R14: ffffffff8ca0a0f0 R15: 1ffffffff194141b FS: 00007f90a734a6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8c60a3a6b0 CR3: 000000005d1c6000 CR4: 00000000003506f0 Call Trace: kstat_incr_softirqs_this_cpu include/linux/kernel_stat.h:63 [inline] handle_softirqs+0x1f8/0x820 kernel/softirq.c:575 __do_softirq kernel/softirq.c:612 [inline] invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0xc7/0x190 kernel/softirq.c:661 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:on_stack arch/x86/include/asm/stacktrace.h:-1 [inline] RIP: 0010:stack_access_ok arch/x86/kernel/unwind_orc.c:393 [inline] RIP: 0010:deref_stack_reg+0x47/0x240 arch/x86/kernel/unwind_orc.c:403 Code: 00 00 00 00 fc ff df e8 17 c0 4a 00 49 8d 5f 08 48 89 d8 48 c1 e8 03 48 89 44 24 10 80 3c 28 00 74 08 48 89 df e8 49 1b a2 00 <48> 89 5c 24 18 4d 8b 77 08 49 8d 5f 10 49 89 dd 49 c1 ed 03 41 80 RSP: 0018:ffffc900041164b8 EFLAGS: 00000246 RAX: 1ffff92000822cbe RBX: ffffc900041165f0 RCX: 0000000000080000 RDX: ffffc9001a783000 RSI: 0000000000073ad0 RDI: 0000000000073ad1 RBP: dffffc0000000000 R08: ffff888076b93c00 R09: 0000000000000003 R10: 0000000000000004 R11: 0000000000000002 R12: ffffc900041165e8 R13: dffffc0000000000 R14: ffffffff8ed0e18e R15: ffffc900041165e8 unwind_next_frame+0x1789/0x2970 arch/x86/kernel/unwind_orc.c:648 arch_stack_walk+0x144/0x190 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 kasan_save_stack+0x3e/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xaf/0xc0 mm/kasan/generic.c:492 __call_rcu_common kernel/rcu/tree.c:2721 [inline] call_rcu+0x158/0x930 kernel/rcu/tree.c:2837 context_switch kernel/sched/core.c:5383 [inline] __schedule+0x14da/0x44d0 kernel/sched/core.c:6699 preempt_schedule_irq+0xb5/0x140 kernel/sched/core.c:7009 irqentry_exit+0x67/0x70 kernel/entry/common.c:438 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:seqcount_lockdep_reader_access+0x12a/0x180 include/linux/seqlock.h:105 Code: 45 ba ff 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 47 41 f7 c5 00 02 00 00 74 01 fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 27 00 00 00 00 66 43 c7 44 27 09 00 00 43 c6 44 27 0b 00 RSP: 0018:ffffc90004116e20 EFLAGS: 00000206 RAX: 68f05c1c144ba100 RBX: ffff88813fffa7c8 RCX: 68f05c1c144ba100 RDX: dffffc0000000000 RSI: ffffffff8aaabce0 RDI: ffffffff8afc6b00 RBP: ffffc90004116ee0 R08: ffffffff8e4a8d6f R09: 1ffffffff1c951ad R10: dffffc0000000000 R11: fffffbfff1c951ae R12: dffffc0000000000 R13: 0000000000000a02 R14: ffffffff81d1aa6f R15: 1ffff92000822dc4 read_seqbegin include/linux/seqlock.h:893 [inline] zone_span_seqbegin include/linux/memory_hotplug.h:134 [inline] page_outside_zone_boundaries mm/page_alloc.c:448 [inline] bad_range+0x5f/0x280 mm/page_alloc.c:467 rmqueue mm/page_alloc.c:2818 [inline] get_page_from_freelist+0x193b/0x19f0 mm/page_alloc.c:3188 __alloc_pages+0x1e3/0x460 mm/page_alloc.c:4457 __alloc_pages_bulk+0x4a4/0x950 mm/page_alloc.c:4405 vm_area_alloc_pages mm/vmalloc.c:3055 [inline] __vmalloc_area_node mm/vmalloc.c:3158 [inline] __vmalloc_node_range+0x721/0x1320 mm/vmalloc.c:3339 __vmalloc_node mm/vmalloc.c:3404 [inline] vzalloc+0x79/0x90 mm/vmalloc.c:3477 bpf_check+0x221/0xe970 kernel/bpf/verifier.c:20347 bpf_prog_load+0x11cb/0x16d0 kernel/bpf/syscall.c:2750 __sys_bpf+0x55a/0x800 kernel/bpf/syscall.c:5473 __do_sys_bpf kernel/bpf/syscall.c:5577 [inline] __se_sys_bpf kernel/bpf/syscall.c:5575 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5575 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f90a658f6c9 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:00007f90a734a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f90a67e6180 RCX: 00007f90a658f6c9 RDX: 0000000000000090 RSI: 0000200000000000 RDI: 0000000000000005 RBP: 00007f90a6611f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f90a67e6218 R14: 00007f90a67e6180 R15: 00007ffe07256368 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 137 Comm: kworker/u4:5 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:csd_lock_wait kernel/smp.c:311 [inline] RIP: 0010:smp_call_function_many_cond+0xde4/0x1130 kernel/smp.c:855 Code: 89 ee 83 e6 01 31 ff e8 da d6 0a 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 15 d3 0a 00 eb 38 f3 90 42 0f b6 04 2b <84> c0 75 11 41 f7 04 24 01 00 00 00 74 1e e8 f9 d2 0a 00 eb e4 44 RSP: 0018:ffffc90002d57780 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 1ffff110171c8791 RCX: ffff88801a7dda00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90002d57900 R08: ffffffff90da8507 R09: 1ffffffff21b50a0 R10: dffffc0000000000 R11: fffffbfff21b50a1 R12: ffff8880b8e43c88 R13: dffffc0000000000 R14: ffff8880b8f3d348 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00002000000f1000 CR3: 000000000cb30000 CR4: 00000000003506e0 Call Trace: on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1022 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:2222 [inline] text_poke_bp_batch+0x318/0x930 arch/x86/kernel/alternative.c:2432 text_poke_flush arch/x86/kernel/alternative.c:2623 [inline] text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2630 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_enable_cpuslocked+0x123/0x240 kernel/jump_label.c:207 static_key_enable+0x1a/0x20 kernel/jump_label.c:220 toggle_allocation_gate+0xaa/0x250 mm/kfence/core.c:831 process_one_work kernel/workqueue.c:2634 [inline] process_scheduled_works+0xa45/0x15b0 kernel/workqueue.c:2711 worker_thread+0xa55/0xfc0 kernel/workqueue.c:2792 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293