watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [syz.0.43:6110] Modules linked in: irq event stamp: 13915603 hardirqs last enabled at (13915602): [] irqentry_exit+0x59c/0x620 kernel/entry/common.c:219 hardirqs last disabled at (13915603): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1056 softirqs last enabled at (42460): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last enabled at (42460): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last enabled at (42460): [] __irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723 softirqs last disabled at (42463): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (42463): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (42463): [] __irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723 CPU: 1 UID: 0 PID: 6110 Comm: syz.0.43 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026 RIP: 0010:__string_src include/trace/stages/stage5_get_offsets.h:16 [inline] RIP: 0010:trace_event_get_offsets_lock include/trace/events/lock.h:50 [inline] RIP: 0010:do_perf_trace_lock include/trace/events/lock.h:50 [inline] RIP: 0010:perf_trace_lock+0xb6/0x3f0 include/trace/events/lock.h:50 Code: 80 00 00 00 00 00 00 00 48 89 74 24 30 48 8d 5e 18 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 9d 70 8b 00 48 8b 03 <48> 85 c0 48 c7 c7 c0 1a 8b 8b 48 0f 45 f8 48 89 7c 24 28 e8 22 b9 RSP: 0018:ffffc90000a081c0 EFLAGS: 00000246 RAX: ffffffff8cab2620 RBX: ffff888020778180 RCX: ffff88802c443d00 RDX: ffffffff8ac572a9 RSI: ffff888020778168 RDI: ffffffff8e20fe20 RBP: ffffc90000a082b0 R08: ffffffff8fc25a77 R09: 1ffffffff1f84b4e R10: dffffc0000000000 R11: fffffbfff1f84b4f R12: dffffc0000000000 R13: ffffffff8ac572a9 R14: ffffffff8e20fe20 R15: 1ffff92000141040 FS: 00007f6fb09a96c0(0000) GS:ffff888125b0b000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30c17ff8 CR3: 000000006b172000 CR4: 00000000003526f0 DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 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+0x379/0x3a0 kernel/locking/lockdep.c:5879 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:165 [inline] _raw_spin_unlock_bh+0x1b/0x40 kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:396 [inline] cfg80211_inform_single_bss_data+0x13b9/0x1ab0 net/wireless/scan.c:2389 cfg80211_inform_bss_data+0x233/0x3bb0 net/wireless/scan.c:3228 cfg80211_inform_bss_frame_data+0x3c7/0x710 net/wireless/scan.c:3319 ieee80211_bss_info_update+0x794/0xa40 net/mac80211/scan.c:230 ieee80211_scan_rx+0x593/0xa20 net/mac80211/scan.c:359 __ieee80211_rx_handle_packet net/mac80211/rx.c:5287 [inline] ieee80211_rx_list+0x2508/0x3050 net/mac80211/rx.c:5544 ieee80211_rx_napi+0x1b1/0x3e0 net/mac80211/rx.c:5567 ieee80211_rx include/net/mac80211.h:5216 [inline] ieee80211_handle_queued_frames+0xe8/0x1e0 net/mac80211/main.c:452 tasklet_action_common+0x2da/0x4b0 kernel/softirq.c:925 handle_softirqs+0x22a/0x7c0 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:preempt_schedule_irq+0x48/0xa0 kernel/sched/core.c:7190 Code: 49 be 00 00 00 00 00 fc ff df eb 09 48 f7 03 10 00 00 00 74 53 bf 01 00 00 00 e8 43 1b 1b f6 e8 5e aa 53 f6 fb bf 01 00 00 00 e3 a9 ff ff 9c 58 fa a9 00 02 00 00 74 05 e8 e4 ab 53 f6 bf 01 RSP: 0018:ffffc9000b837a90 EFLAGS: 00000206 RAX: 000000000000a5dd RBX: 0000000000000000 RCX: 0000000000000001 RDX: 0000000000000006 RSI: ffffffff8d9b8102 RDI: 0000000000000001 RBP: 0000000000000000 R08: ffffffff8fc25a77 R09: 1ffffffff1f84b4e R10: dffffc0000000000 R11: fffffbfff1f84b4f R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000 irqentry_exit+0x597/0x620 kernel/entry/common.c:216 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:lock_release+0xd/0x3a0 kernel/locking/lockdep.c:5876 Code: 00 00 00 e9 0e ff ff ff 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 41 57 41 56 41 55 41 54 <53> 48 83 ec 30 49 89 f5 49 89 fe 65 48 8b 05 80 15 22 11 48 89 44 RSP: 0018:ffffc9000b837bb0 EFLAGS: 00000246 RAX: 1ffff92001706f8d RBX: ffff88802c443d00 RCX: 0000000000000000 RDX: 0000000000000006 RSI: ffffffff81f4a341 RDI: ffff888033d180a8 RBP: ffffc9000b837cf0 R08: ffffffff8fc25a77 R09: 1ffffffff1f84b4e R10: dffffc0000000000 R11: fffffbfff1f84b4f R12: 1ffff92001706f84 R13: dffffc0000000000 R14: ffffc9000b837c60 R15: ffff888033d18040 __mutex_unlock_slowpath+0xd3/0x7d0 kernel/locking/mutex.c:938 __do_sys_perf_event_open kernel/events/core.c:13823 [inline] __se_sys_perf_event_open+0x1941/0x1d60 kernel/events/core.c:13462 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6fafb9acb9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6fb09a9028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f6fafe15fa0 RCX: 00007f6fafb9acb9 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 00002000000003c0 RBP: 00007f6fafc08bf7 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007f6fafe16038 R14: 00007f6fafe15fa0 R15: 00007ffe2f5fe978 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 15 Comm: ksoftirqd/0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026 RIP: 0010:bpf_set_run_ctx include/linux/bpf.h:2384 [inline] RIP: 0010:bpf_prog_run_array include/linux/bpf.h:2422 [inline] RIP: 0010:trace_call_bpf+0x316/0xb70 kernel/trace/bpf_trace.c:145 Code: 10 31 ff 89 de e8 ba 64 f4 ff 85 db 0f 84 e9 05 00 00 e8 6d 60 f4 ff 49 8d 9f 50 18 00 00 48 89 d8 48 c1 e8 03 48 89 44 24 68 <42> 80 3c 28 00 74 08 48 89 df e8 4b b7 5b 00 4c 89 7c 24 38 4c 89 RSP: 0018:ffffc900001479e0 EFLAGS: 00000806 RAX: 1ffff110039d4aaa RBX: ffff88801cea5550 RCX: ffff88801cea3d00 RDX: 0000000000000100 RSI: 0000000080000101 RDI: 0000000000000000 RBP: ffffc90000147af8 R08: ffffc90000147a8f R09: 0000000000000000 R10: ffffc90000147a80 R11: fffff52000028f52 R12: ffff88805d7f8000 R13: dffffc0000000000 R14: ffff88801cea4180 R15: ffff88801cea3d00 FS: 0000000000000000(0000) GS:ffff888125a0b000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055dac6c06a38 CR3: 00000000213c6000 CR4: 00000000003526f0 DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: perf_trace_run_bpf_submit+0x78/0x170 kernel/events/core.c:11000 do_perf_trace_preemptirq_template include/trace/events/preemptirq.h:14 [inline] perf_trace_preemptirq_template+0x268/0x340 include/trace/events/preemptirq.h:14 __do_trace_irq_enable include/trace/events/preemptirq.h:40 [inline] trace_irq_enable+0xd4/0x100 include/trace/events/preemptirq.h:40 trace_hardirqs_on+0x18/0x40 kernel/trace/trace_preemptirq.c:73 handle_softirqs+0x158/0x7c0 kernel/softirq.c:606 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x726/0x8b0 kernel/kthread.c:463 ret_from_fork+0x51b/0xa40 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246