watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.2.170:6581] Modules linked in: irq event stamp: 9904771 hardirqs last enabled at (9904770): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:310 hardirqs last disabled at (9904771): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1050 softirqs last enabled at (2409564): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (2409564): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (2409564): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 softirqs last disabled at (2409567): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (2409567): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (2409567): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 CPU: 0 UID: 0 PID: 6581 Comm: syz.2.170 Not tainted 6.16.0-rc6-syzkaller-g95993dc3039e #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:__do_kmalloc_node mm/slub.c:4329 [inline] RIP: 0010:__kmalloc_noprof+0x282/0x4f0 mm/slub.c:4340 Code: 00 00 41 f6 44 24 09 80 0f 85 c5 00 00 00 f3 0f 1e fa 4c 89 e7 48 89 de 4c 89 fa 89 e9 e8 96 a5 0a 00 48 89 c3 41 8b 4c 24 18 <48> 8b 7c 24 08 48 89 c6 4c 89 fa 41 89 e8 41 b9 ff ff ff ff e8 f5 RSP: 0018:ffffc90000006e48 EFLAGS: 00000282 RAX: ffff888020f97800 RBX: ffff888020f97800 RCX: 0000000000000800 RDX: 000000002f28fb2a RSI: 0000000000000001 RDI: 000000009fd3eae4 RBP: 0000000000000920 R08: 000000001c4f5fce R09: 00000000ca7e8cd2 R10: 0000000000000013 R11: fffff91ffff95805 R12: ffff88801a441dc0 R13: ffff888020f97800 R14: 0000000000014900 R15: 00000000000003b8 FS: 00007fbefd3f76c0(0000) GS:ffff888125c1f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f19d8ee56c0 CR3: 0000000077578000 CR4: 00000000003526f0 Call Trace: kmalloc_noprof include/linux/slab.h:909 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] ieee802_11_parse_elems_full+0x152/0x2aa0 net/mac80211/parse.c:1011 ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2414 [inline] ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2421 [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+0xd05/0x1ac0 net/wireless/scan.c:2367 cfg80211_inform_bss_data+0x1fb/0x3b20 net/wireless/scan.c:3222 cfg80211_inform_bss_frame_data+0x3d7/0x730 net/wireless/scan.c:3313 ieee80211_bss_info_update+0x746/0x9e0 net/mac80211/scan.c:226 ieee80211_scan_rx+0x593/0xa20 net/mac80211/scan.c:355 __ieee80211_rx_handle_packet net/mac80211/rx.c:5183 [inline] ieee80211_rx_list+0x22fc/0x2d80 net/mac80211/rx.c:5420 ieee80211_rx_napi+0x1a8/0x3d0 net/mac80211/rx.c:5443 ieee80211_rx include/net/mac80211.h:5185 [inline] ieee80211_handle_queued_frames+0xe8/0x1f0 net/mac80211/main.c:441 tasklet_action_common+0x36c/0x580 kernel/softirq.c:829 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_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:strlen+0x2e/0x70 lib/string.c:420 Code: 41 57 41 56 41 54 53 48 c7 c0 ff ff ff ff 49 be 00 00 00 00 00 fc ff df 48 89 fb 49 89 c7 48 89 d8 48 c1 e8 03 42 0f b6 04 30 <84> c0 75 11 48 ff c3 49 8d 47 01 42 80 7c 3f 01 00 75 de eb 19 89 RSP: 0018:ffffc9000c2f6b58 EFLAGS: 00000a02 RAX: 0000000000000000 RBX: ffffffff8b8bdd81 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8e13f0e0 RDI: ffffffff8b8bdd80 RBP: ffffc9000c2f6c80 R08: 0000000000000002 R09: 0000000000000000 R10: dffffc0000000000 R11: fffff91ffff95405 R12: 1ffff9200185ed78 R13: ffffffff8e13f0e0 R14: dffffc0000000000 R15: 0000000000000000 __fortify_strlen include/linux/fortify-string.h:268 [inline] trace_event_get_offsets_lock_acquire include/trace/events/lock.h:24 [inline] do_perf_trace_lock_acquire include/trace/events/lock.h:24 [inline] perf_trace_lock_acquire+0xcb/0x410 include/trace/events/lock.h:24 __do_trace_lock_acquire include/trace/events/lock.h:24 [inline] trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0x311/0x360 kernel/locking/lockdep.c:5834 rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:841 [inline] trace_call_bpf+0xd4/0x850 kernel/trace/bpf_trace.c:-1 perf_trace_run_bpf_submit+0x78/0x170 kernel/events/core.c:10891 do_perf_trace_lock_acquire include/trace/events/lock.h:24 [inline] perf_trace_lock_acquire+0x335/0x410 include/trace/events/lock.h:24 __do_trace_lock_acquire include/trace/events/lock.h:24 [inline] trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0x311/0x360 kernel/locking/lockdep.c:5834 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 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4148 [inline] slab_alloc_node mm/slub.c:4197 [inline] kmem_cache_alloc_noprof+0x1c1/0x3c0 mm/slub.c:4204 lsm_inode_alloc security/security.c:755 [inline] security_inode_alloc+0x39/0x330 security/security.c:1697 inode_init_always_gfp+0x9ed/0xdc0 fs/inode.c:306 inode_init_always include/linux/fs.h:3281 [inline] alloc_inode+0x82/0x1b0 fs/inode.c:353 iget_locked+0xf0/0x570 fs/inode.c:1439 kernfs_get_inode+0x4f/0x780 fs/kernfs/inode.c:253 kernfs_iop_lookup+0x1f6/0x320 fs/kernfs/dir.c:1236 __lookup_slow+0x294/0x3d0 fs/namei.c:1817 lookup_slow+0x53/0x70 fs/namei.c:1834 walk_component+0x2d2/0x400 fs/namei.c:2138 lookup_last fs/namei.c:2639 [inline] path_lookupat+0x163/0x430 fs/namei.c:2663 do_o_path+0x97/0x1f0 fs/namei.c:4026 path_openat+0x311f/0x3830 fs/namei.c:4048 do_filp_open+0x1fa/0x410 fs/namei.c:4082 do_sys_openat2+0x121/0x1c0 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_openat fs/open.c:1468 [inline] __se_sys_openat fs/open.c:1463 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1463 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: 0033:0x7fbefd58e9a9 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:00007fbefd3f7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fbefd7b5fa0 RCX: 00007fbefd58e9a9 RDX: 0000000000200002 RSI: 0000200000000380 RDI: ffffffffffffff9c RBP: 00007fbefd610d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fbefd7b5fa0 R15: 00007ffdcdae11f8 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 6671 Comm: kworker/u8:19 Not tainted 6.16.0-rc6-syzkaller-g95993dc3039e #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline] RIP: 0010:smp_call_function_many_cond+0xf69/0x12d0 kernel/smp.c:885 Code: 00 45 8b 2f 44 89 ee 83 e6 01 31 ff e8 a0 6e 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 4b 6a 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 30 6a 0b RSP: 0018:ffffc900058476a0 EFLAGS: 00000293 RAX: ffffffff81b4bec0 RBX: ffff8880b873b200 RCX: ffff888025671e00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90005847800 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 1ffff110170c838d R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8880b8641c68 FS: 0000000000000000(0000) GS:ffff888125d1f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056412ecc1028 CR3: 000000000df38000 CR4: 00000000003526f0 DR0: 0000000000000000 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:2691 [inline] smp_text_poke_batch_finish+0x5e0/0x1100 arch/x86/kernel/alternative.c:2901 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+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245