watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.5.607:8397] Modules linked in: irq event stamp: 10500837 hardirqs last enabled at (10500836): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:310 hardirqs last disabled at (10500837): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1050 softirqs last enabled at (266952): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (266952): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (266952): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 softirqs last disabled at (266955): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (266955): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (266955): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 CPU: 0 UID: 0 PID: 8397 Comm: syz.5.607 Not tainted 6.16.0-rc6-syzkaller-g42be23e8f2dc #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:do_perf_trace_lock include/trace/events/lock.h:50 [inline] RIP: 0010:perf_trace_lock+0x2f8/0x3b0 include/trace/events/lock.h:50 Code: 18 48 89 47 10 8b 94 24 80 00 00 00 4c 8b 4c 24 60 41 b8 01 00 00 00 44 89 f6 48 8b 4c 24 38 6a 00 ff 74 24 18 e8 88 2d 52 00 <48> 83 c4 10 4c 8b 64 24 20 48 c7 44 24 40 0e 36 e0 45 4b c7 04 3c RSP: 0018:ffffc90000006a70 EFLAGS: 00000282 RAX: 0000000000000000 RBX: ffffe8ffffcc0758 RCX: 0000000000000001 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000006b80 R08: 0000000000000000 R09: ffffffff81cb5957 R10: dffffc0000000000 R11: fffff91ffff980ee R12: ffffe8ffffcc076d R13: 000000000000000e R14: 000000000000002c R15: dffffc0000000000 FS: 00007f691c1616c0(0000) GS:ffff888125c1f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd4fddb7bac CR3: 0000000034b22000 CR4: 00000000003526f0 DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff1 DR7: 0000000000000600 Call Trace: __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:5882 rcu_lock_release include/linux/rcupdate.h:341 [inline] rcu_read_unlock include/linux/rcupdate.h:871 [inline] class_rcu_destructor include/linux/rcupdate.h:1155 [inline] unwind_next_frame+0x19a9/0x2390 arch/x86/kernel/unwind_orc.c:680 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 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x62/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2381 [inline] slab_free mm/slub.c:4643 [inline] kfree+0x18e/0x440 mm/slub.c:4842 ieee80211_inform_bss+0xbd9/0x10a0 net/mac80211/scan.c:160 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:rcu_lockdep_current_cpu_online+0xf1/0x120 kernel/rcu/tree.c:4008 Code: 7b 00 4c 85 3b 75 1a 48 c7 c7 80 4d 14 8e be 04 00 00 00 e8 a1 da 7b 00 83 3d 7a d9 6c 0c 00 74 16 b0 01 65 ff 0d 1f 9c f8 10 <74> 0f 5b 41 5e 41 5f e9 83 ef c9 09 cc 31 c0 eb e8 e8 89 32 8c ff RSP: 0018:ffffc9000f757030 EFLAGS: 00000202 RAX: 1ffffffff1c28801 RBX: ffffffff8e1444f0 RCX: 85f064c1a4c2b500 RDX: ffff888025a38000 RSI: ffffffff8be29f20 RDI: ffff8880b863afe8 RBP: ffffc9000f757158 R08: ffffc9000f7570ef R09: 0000000000000000 R10: ffffc9000f7570e0 R11: fffff52001eeae1e R12: 0000000000000001 R13: ffffc9000f7570e0 R14: dffffc0000000000 R15: 0000000000000001 rcu_read_lock_held_common kernel/rcu/update.c:113 [inline] rcu_read_lock_held+0x1e/0x50 kernel/rcu/update.c:349 bpf_prog_run_array include/linux/bpf.h:2260 [inline] trace_call_bpf+0x1f4/0x850 kernel/trace/bpf_trace.c:146 perf_trace_run_bpf_submit+0x78/0x170 kernel/events/core.c:10891 do_perf_trace_lock include/trace/events/lock.h:50 [inline] perf_trace_lock+0x2f8/0x3b0 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:5882 rcu_lock_release include/linux/rcupdate.h:341 [inline] rcu_read_unlock_sched include/linux/rcupdate.h:953 [inline] pfn_valid+0x3b2/0x490 include/linux/mmzone.h:2168 page_table_check_set+0x25/0x730 mm/page_table_check.c:105 page_table_check_ptes_set include/linux/page_table_check.h:76 [inline] set_ptes include/linux/pgtable.h:292 [inline] __copy_present_ptes mm/memory.c:973 [inline] copy_present_ptes mm/memory.c:1056 [inline] copy_pte_range mm/memory.c:1179 [inline] copy_pmd_range+0x4262/0x7000 mm/memory.c:1267 copy_pud_range mm/memory.c:1304 [inline] copy_p4d_range mm/memory.c:1328 [inline] copy_page_range+0xc46/0x1270 mm/memory.c:1416 dup_mmap+0xf57/0x1ac0 mm/mmap.c:1838 dup_mm kernel/fork.c:1477 [inline] copy_mm+0x13c/0x4b0 kernel/fork.c:1529 copy_process+0x16d3/0x3b80 kernel/fork.c:2169 kernel_clone+0x21e/0x870 kernel/fork.c:2599 __do_sys_clone kernel/fork.c:2742 [inline] __se_sys_clone kernel/fork.c:2726 [inline] __x64_sys_clone+0x18b/0x1e0 kernel/fork.c:2726 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: 0033:0x7f691b38e9a9 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:00007f691c160fe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007f691b5b5fa0 RCX: 00007f691b38e9a9 RDX: 00002000000000c0 RSI: 0000200000000180 RDI: 0000000008000000 RBP: 00007f691b410d69 R08: 0000200000000340 R09: 0000200000000340 R10: 0000200000000240 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f691b5b5fa0 R15: 00007ffdd855d428 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 3491 Comm: kworker/u8:7 Not tainted 6.16.0-rc6-syzkaller-g42be23e8f2dc #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+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:ffffc9000c6c76a0 EFLAGS: 00000293 RAX: ffffffff81b4bec0 RBX: ffff8880b873b200 RCX: ffff8880319e5a00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000c6c7800 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: 00007f15292e5000 CR3: 000000000df38000 CR4: 00000000003526f0 DR0: 0000200000000300 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