watchdog: BUG: soft lockup - CPU#1 stuck for 122s! [syz.2.239:6665] Modules linked in: irq event stamp: 7786369 hardirqs last enabled at (7786368): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:310 hardirqs last disabled at (7786369): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1050 softirqs last enabled at (7747686): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (7747686): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (7747686): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 softirqs last disabled at (7747689): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (7747689): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (7747689): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 CPU: 1 UID: 0 PID: 6665 Comm: syz.2.239 Not tainted 6.15.0-syzkaller-gcd7312a78f36 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:kfree_skbmem+0x0/0x1c0 net/core/skbuff.c:1105 Code: 89 df 5b 41 5e eb 23 e8 7e 74 7a f8 eb f1 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <55> 41 57 41 56 53 48 89 fb 49 bf 00 00 00 00 00 fc ff df e8 48 74 RSP: 0018:ffffc90000a08b60 EFLAGS: 00000292 RAX: 0000000000000000 RBX: ffff88807aec0e40 RCX: 1ffff1100b098a5f RDX: ffff8880584c52fe RSI: ffffffff8d97cf77 RDI: ffff8880584c5280 RBP: ffff88807aec30a0 R08: ffffffff8fa101f7 R09: 1ffffffff1f4203e R10: dffffc0000000000 R11: fffffbfff1f4203f R12: dffffc0000000000 R13: ffff88806d5829d0 R14: ffff8880584c5280 R15: ffff88806d5829d0 FS: 00007f0c1ad856c0(0000) GS:ffff888125d54000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcd2c783338 CR3: 0000000033e82000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mac80211_hwsim_beacon_tx+0x3f0/0x860 drivers/net/wireless/virtual/mac80211_hwsim.c:2323 __iterate_interfaces+0x2a8/0x590 net/mac80211/util.c:761 ieee80211_iterate_active_interfaces_atomic+0xdb/0x180 net/mac80211/util.c:797 mac80211_hwsim_beacon+0xbb/0x1c0 drivers/net/wireless/virtual/mac80211_hwsim.c:2353 __run_hrtimer kernel/time/hrtimer.c:1761 [inline] __hrtimer_run_queues+0x529/0xc60 kernel/time/hrtimer.c:1825 hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1842 handle_softirqs+0x286/0x870 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xca/0x1f0 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:rmqueue_pcplist mm/page_alloc.c:3096 [inline] RIP: 0010:rmqueue mm/page_alloc.c:3140 [inline] RIP: 0010:get_page_from_freelist+0x63b/0x22c0 mm/page_alloc.c:3666 Code: 00 4e 8d 34 f5 60 2c ba 8d 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 00 09 0d 00 49 03 1e 48 89 df e8 45 61 51 09 <85> c0 0f 84 b7 01 00 00 48 85 db 4c 8b 74 24 30 0f 84 7f 02 00 00 RSP: 0018:ffffc9001bbff280 EFLAGS: 00000282 RAX: 0000000000000001 RBX: ffff8880b8741680 RCX: e21c864c584c4500 RDX: 0000000000000001 RSI: ffffffff8db69c35 RDI: ffffffff8be28800 RBP: ffffc9001bbff4f0 R08: 0000000000000000 R09: ffffffff8217265b R10: ffffc9001bbfefe0 R11: ffffffffa0201a10 R12: dffffc0000000000 R13: ffff88813fffd998 R14: ffffffff8dba2c68 R15: ffffc9001bbff55c __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959 __alloc_pages_noprof mm/page_alloc.c:4993 [inline] alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:4913 ___alloc_pages_bulk mm/kasan/shadow.c:344 [inline] __kasan_populate_vmalloc mm/kasan/shadow.c:368 [inline] kasan_populate_vmalloc+0xba/0x1a0 mm/kasan/shadow.c:417 alloc_vmap_area+0xd51/0x1490 mm/vmalloc.c:2084 __get_vm_area_node+0x1f8/0x300 mm/vmalloc.c:3179 __vmalloc_node_range_noprof+0x301/0x12f0 mm/vmalloc.c:3845 __vmalloc_node_noprof mm/vmalloc.c:3948 [inline] __vmalloc_noprof+0xb1/0xf0 mm/vmalloc.c:3962 bpf_prog_alloc_no_stats+0x4a/0x4e0 kernel/bpf/core.c:104 bpf_prog_alloc+0x3c/0x1a0 kernel/bpf/core.c:146 bpf_prog_load+0x735/0x1930 kernel/bpf/syscall.c:2882 __sys_bpf+0x5f1/0x860 kernel/bpf/syscall.c:5978 __do_sys_bpf kernel/bpf/syscall.c:6085 [inline] __se_sys_bpf kernel/bpf/syscall.c:6083 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6083 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0c19f8e929 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:00007f0c1ad85038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f0c1a1b6080 RCX: 00007f0c19f8e929 RDX: 0000000000000094 RSI: 0000200000000140 RDI: 0000000000000005 RBP: 00007f0c1a010b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f0c1a1b6080 R15: 00007ffefa0c1558 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 6671 Comm: kworker/u8:11 Not tainted 6.15.0-syzkaller-gcd7312a78f36 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline] RIP: 0010:smp_call_function_many_cond+0xf72/0x12d0 kernel/smp.c:885 Code: 01 31 ff e8 e0 7d 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 8b 79 0b 00 eb 37 f3 90 43 0f b6 04 2c 84 c0 75 10 <41> f7 07 01 00 00 00 74 1e e8 70 79 0b 00 eb e5 44 89 f9 80 e1 07 RSP: 0018:ffffc9001bc276a0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff8880b863cb40 RCX: ffff888034f23c00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9001bc27800 R08: ffffffff8fa101f7 R09: 1ffffffff1f4203e R10: dffffc0000000000 R11: fffffbfff1f4203f R12: 1ffff110170e828d R13: dffffc0000000000 R14: 0000000000000001 R15: ffff8880b8741468 FS: 0000000000000000(0000) GS:ffff888125c54000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056021c7825a0 CR3: 000000000df38000 CR4: 00000000003526f0 DR0: 0100000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1052 on_each_cpu include/linux/smp.h:71 [inline] smp_text_poke_sync_each_cpu arch/x86/kernel/alternative.c:2660 [inline] smp_text_poke_batch_finish+0x5e0/0x1100 arch/x86/kernel/alternative.c:2870 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_enable_cpuslocked+0x128/0x250 kernel/jump_label.c:210 static_key_enable+0x1a/0x20 kernel/jump_label.c:223 toggle_allocation_gate+0xad/0x240 mm/kfence/core.c:850 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245