watchdog: BUG: soft lockup - CPU#0 stuck for 144s! [syz.0.133:6424] Modules linked in: irq event stamp: 11139447 hardirqs last enabled at (11139446): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:357 hardirqs last disabled at (11139447): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (6745008): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (6745008): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (6745008): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 softirqs last disabled at (6745011): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (6745011): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (6745011): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 CPU: 0 UID: 0 PID: 6424 Comm: syz.0.133 Not tainted 6.15.0-rc4-syzkaller-gb4432656b36e #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:lock_acquire+0x175/0x360 kernel/locking/lockdep.c:5870 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 eb 32 d7 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:ffffc90000006918 EFLAGS: 00000206 RAX: 0f293953adc28700 RBX: 0000000000000000 RCX: 0f293953adc28700 RDX: 0000000000000000 RSI: ffffffff8d9350da RDI: ffffffff8bc1cde0 RBP: ffffffff817199f5 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff817199f5 R12: 0000000000000002 R13: ffffffff8df3b860 R14: 0000000000000000 R15: 0000000000000246 FS: 00007ff0357be6c0(0000) GS:ffff8881260cc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc9e7ba8670 CR3: 000000002f87a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:841 [inline] class_rcu_constructor include/linux/rcupdate.h:1155 [inline] unwind_next_frame+0xc2/0x2390 arch/x86/kernel/unwind_orc.c:479 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __do_kmalloc_node mm/slub.c:4341 [inline] __kmalloc_noprof+0x27a/0x4f0 mm/slub.c:4353 kmalloc_noprof include/linux/slab.h:909 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] ieee802_11_parse_elems_full+0x152/0x2b20 net/mac80211/parse.c:1013 ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2402 [inline] ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2409 [inline] ieee80211_inform_bss+0x10c/0x10a0 net/mac80211/scan.c:79 rdev_inform_bss net/wireless/rdev-ops.h:418 [inline] cfg80211_inform_single_bss_data+0xd02/0x1ac0 net/wireless/scan.c:2367 cfg80211_inform_bss_data+0x1f6/0x3ad0 net/wireless/scan.c:3222 cfg80211_inform_bss_frame_data+0x362/0x700 net/wireless/scan.c:3317 ieee80211_bss_info_update+0x746/0x9e0 net/mac80211/scan.c:226 ieee80211_scan_rx+0x527/0x9b0 net/mac80211/scan.c:340 __ieee80211_rx_handle_packet net/mac80211/rx.c:5179 [inline] ieee80211_rx_list+0x22fc/0x2d80 net/mac80211/rx.c:5416 ieee80211_rx_napi+0x1a8/0x3d0 net/mac80211/rx.c:5439 ieee80211_rx include/net/mac80211.h:5179 [inline] ieee80211_handle_queued_frames+0xe8/0x1f0 net/mac80211/main.c:441 tasklet_action_common+0x369/0x580 kernel/softirq.c:829 handle_softirqs+0x283/0x870 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_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:strlen+0x4/0x70 lib/string.c:417 Code: cc cc 89 f9 80 e1 07 38 c1 7c db e8 96 e8 cf f6 eb d4 90 0f 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <41> 57 41 56 41 54 53 48 c7 c0 ff ff ff ff 49 be 00 00 00 00 00 fc RSP: 0018:ffffc9001a4377d8 EFLAGS: 00000286 RAX: ffffffff8b6bb960 RBX: ffffffff8df3b878 RCX: 0f293953adc28700 RDX: ffffffff822a2ab9 RSI: ffffffff8df3b860 RDI: ffffffff8b6bb960 RBP: ffffc9001a4378d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff822a2ab9 R12: 1ffff92003486f04 R13: ffffffff822a2ab9 R14: ffffffff8de0ab40 R15: dffffc0000000000 _Z16__fortify_strlenPKcU25pass_dynamic_object_size1 include/linux/fortify-string.h:268 [inline] trace_event_get_offsets_lock include/trace/events/lock.h:50 [inline] do_perf_trace_lock include/trace/events/lock.h:50 [inline] perf_trace_lock+0xc2/0x3b0 include/trace/events/lock.h:50 __do_trace_lock_release include/trace/events/lock.h:69 [inline] trace_lock_release include/trace/events/lock.h:69 [inline] lock_release+0x3b2/0x3e0 kernel/locking/lockdep.c:5877 rcu_lock_release include/linux/rcupdate.h:341 [inline] rcu_read_unlock include/linux/rcupdate.h:871 [inline] percpu_ref_put_many include/linux/percpu-refcount.h:337 [inline] percpu_ref_put+0xf9/0x180 include/linux/percpu-refcount.h:351 css_put include/linux/cgroup_refcnt.h:79 [inline] obj_cgroup_charge_pages+0x138/0x1c0 mm/memcontrol.c:2702 obj_cgroup_charge+0x3e1/0x6f0 mm/memcontrol.c:3006 __memcg_slab_post_alloc_hook+0x1b7/0x820 mm/memcontrol.c:3067 memcg_slab_post_alloc_hook mm/slub.c:2197 [inline] slab_post_alloc_hook mm/slub.c:4171 [inline] slab_alloc_node mm/slub.c:4210 [inline] __do_kmalloc_node mm/slub.c:4340 [inline] __kmalloc_node_noprof+0x33a/0x4e0 mm/slub.c:4347 kmalloc_node_noprof include/linux/slab.h:932 [inline] __bpf_map_area_alloc kernel/bpf/syscall.c:390 [inline] bpf_map_area_alloc+0x5e/0x120 kernel/bpf/syscall.c:403 dev_map_alloc+0x29/0x540 kernel/bpf/devmap.c:167 map_create+0x900/0x1150 kernel/bpf/syscall.c:1476 __sys_bpf+0x67e/0x860 kernel/bpf/syscall.c:5816 __do_sys_bpf kernel/bpf/syscall.c:5941 [inline] __se_sys_bpf kernel/bpf/syscall.c:5939 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5939 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff03498e969 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:00007ff0357be038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007ff034bb5fa0 RCX: 00007ff03498e969 RDX: 0000000000000048 RSI: 0000200000000400 RDI: 0000000000000000 RBP: 00007ff034a10ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ff034bb5fa0 R15: 00007fff0b3e6dd8 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 5971 Comm: kworker/u8:9 Not tainted 6.15.0-rc4-syzkaller-gb4432656b36e #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+0xe69/0x11c0 kernel/smp.c:885 Code: 00 45 8b 2f 44 89 ee 83 e6 01 31 ff e8 20 6d 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 cb 68 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 b0 68 0b RSP: 0018:ffffc9000519f700 EFLAGS: 00000293 RAX: ffffffff81b45620 RBX: ffff8880b893ad40 RCX: ffff88807c0e0000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000519f860 R08: ffffffff8f7ed377 R09: 1ffffffff1efda6e R10: dffffc0000000000 R11: fffffbfff1efda6f R12: 1ffff11017108245 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8880b8841228 FS: 0000000000000000(0000) GS:ffff8881261cc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f28ac6e5000 CR3: 000000000dd36000 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+0x319/0x940 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+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+0xadb/0x17a0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x70e/0x8a0 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