watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [syz.0.326:7127] Modules linked in: irq event stamp: 11858801 hardirqs last enabled at (11858800): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:310 hardirqs last disabled at (11858801): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1050 softirqs last enabled at (11855262): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (11855262): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (11855262): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 softirqs last disabled at (11855265): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (11855265): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (11855265): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 CPU: 0 UID: 0 PID: 7127 Comm: syz.0.326 Not tainted 6.16.0-rc3-syzkaller-g0768e980feb5 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:bpf_prog_inc_misses_counter+0x17/0xa0 kernel/bpf/syscall.c:2398 Code: 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 55 41 57 41 56 53 48 89 fb 49 be 00 00 00 00 00 fc ff df 04 a6 ef ff 48 83 c3 20 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 RSP: 0018:ffffc900000069f8 EFLAGS: 00000292 RAX: ffffffff81cb8bd2 RBX: ffffc9001b542000 RCX: ffff88807e338000 RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffffc9001b542000 RBP: ffffc90000006b18 R08: 0000000000000000 R09: ffffffff81cb84c7 R10: dffffc0000000000 R11: fffff91ffff94e05 R12: 0000000000000001 R13: 1ffff92000000d50 R14: dffffc0000000000 R15: ffff888077524840 FS: 00007f728ae2a6c0(0000) GS:ffff888125c22000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b31113ff8 CR3: 0000000031d62000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: bpf_prog_inc_misses_counters include/linux/bpf.h:3354 [inline] trace_call_bpf+0x796/0x850 kernel/trace/bpf_trace.c:124 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 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:4328 [inline] __kmalloc_noprof+0x27a/0x4f0 mm/slub.c:4340 kmalloc_noprof include/linux/slab.h:909 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] cfg80211_inform_single_bss_data+0x905/0x1ac0 net/wireless/scan.c:2339 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_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:rcu_read_unlock_special+0x87/0x4c0 kernel/rcu/tree_plugin.h:694 Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 a2 05 f8 10 41 f7 c6 00 00 f0 00 74 49 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b RSP: 0018:ffffc9000388f220 EFLAGS: 00000206 RAX: ef0bc020f4b7b700 RBX: 1ffff92000711e4c RCX: ef0bc020f4b7b700 RDX: 0000000000000006 RSI: ffffffff8d99645e RDI: ffffffff8be29180 RBP: ffffc9000388f320 R08: ffffffff8fa1d2f7 R09: 1ffffffff1f43a5e R10: dffffc0000000000 R11: fffffbfff1f43a5f R12: ffffffff8e144200 R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001 __rcu_read_unlock+0x84/0xe0 kernel/rcu/tree_plugin.h:438 rcu_read_unlock include/linux/rcupdate.h:873 [inline] trace_call_bpf+0x5ae/0x850 kernel/trace/bpf_trace.c:148 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 down_write+0x96/0x1f0 kernel/locking/rwsem.c:1577 kernfs_link_sibling+0x2fb/0x3e0 fs/kernfs/dir.c:394 kernfs_add_one+0x1e0/0x520 fs/kernfs/dir.c:810 __kernfs_create_file+0x22b/0x2e0 fs/kernfs/file.c:1068 sysfs_add_file_mode_ns+0x238/0x300 fs/sysfs/file.c:319 create_files fs/sysfs/group.c:76 [inline] internal_create_group+0x66d/0x1110 fs/sysfs/group.c:183 internal_create_groups fs/sysfs/group.c:223 [inline] sysfs_create_groups+0x59/0x120 fs/sysfs/group.c:249 device_add_groups drivers/base/core.c:2839 [inline] device_add_attrs+0x1c4/0x5a0 drivers/base/core.c:2914 device_add+0x496/0xb50 drivers/base/core.c:3646 netdev_register_kobject+0x156/0x2f0 net/core/net-sysfs.c:2336 register_netdevice+0x126c/0x1ae0 net/core/dev.c:11106 tun_set_iff+0x844/0xef0 drivers/net/tun.c:2781 __tun_chr_ioctl+0x788/0x1df0 drivers/net/tun.c:3048 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893 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: 0033:0x7f7289f8e929 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:00007f728ae2a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f728a1b5fa0 RCX: 00007f7289f8e929 RDX: 0000200000000080 RSI: 00000000400454ca RDI: 000000000000000d RBP: 00007f728a010ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f728a1b5fa0 R15: 00007ffdbaa375f8 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 7136 Comm: syz.3.328 Not tainted 6.16.0-rc3-syzkaller-g0768e980feb5 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:debug_smp_processor_id+0x0/0x20 lib/smp_processor_id.c:59 Code: c7 60 9f 1f 8e 4c 89 f6 e8 6d 67 88 f9 e9 66 ff ff ff cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 c7 c7 20 91 e2 8b 48 c7 c6 60 91 e2 8b eb 1c 66 66 RSP: 0018:ffffc90000a07d28 EFLAGS: 00000006 RAX: 0000000000010104 RBX: ffff88807d848440 RCX: ffffffff99ab2303 RDX: 0000000000010100 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc90000a07e58 R08: ffffc90000a07def R09: 0000000000000000 R10: ffffc90000a07de0 R11: fffff52000140fbe R12: dffffc0000000000 R13: 1ffff1100fb09088 R14: ffff888077524800 R15: ffffffff8e00df08 FS: 00007f00cc5ec6c0(0000) GS:ffff888125d22000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055ef32e79158 CR3: 0000000029fea000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: migrate_disable+0x6d/0x190 kernel/sched/core.c:2396 bpf_prog_run_array include/linux/bpf.h:2267 [inline] trace_call_bpf+0x229/0x850 kernel/trace/bpf_trace.c:146 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 seqcount_lockdep_reader_access+0xc9/0x1c0 include/linux/seqlock.h:72 ktime_get_update_offsets_now+0x60/0x3d0 kernel/time/timekeeping.c:2427 hrtimer_update_base kernel/time/hrtimer.c:640 [inline] hrtimer_interrupt+0x132/0xaa0 kernel/time/hrtimer.c:1869 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1039 [inline] __sysvec_apic_timer_interrupt+0x10b/0x410 arch/x86/kernel/apic/apic.c:1056 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1050 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:80 [inline] RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:102 [inline] RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:227 [inline] RIP: 0010:unwind_next_frame+0x130e/0x2390 arch/x86/kernel/unwind_orc.c:494 Code: c1 e8 3f 48 01 c8 48 83 e0 fe 4c 8d 3c 45 00 00 00 00 49 01 ef 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 <84> c0 75 27 49 63 07 4c 01 f8 49 8d 4f 04 4c 39 e0 48 0f 46 e9 49 RSP: 0018:ffffc90000a083d8 EFLAGS: 00000a03 RAX: 0000000000000000 RBX: ffffffff8fb61ca4 RCX: dffffc0000000000 RDX: ffffffff8fb61c84 RSI: ffffffff90322850 RDI: ffffffff8be29120 RBP: ffffffff8fb61c84 R08: 0000000000000009 R09: ffffffff81729af5 R10: ffffc90000a08140 R11: ffffffffa0201a48 R12: ffffffff8185ad78 R13: ffffffff8fb61c84 R14: ffffc90000a084a8 R15: ffffffff8fb61c94 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_node_noprof+0x1bb/0x3c0 mm/slub.c:4249 kmalloc_reserve+0xbd/0x290 net/core/skbuff.c:579 __alloc_skb+0x142/0x2d0 net/core/skbuff.c:670 __netdev_alloc_skb+0x108/0x970 net/core/skbuff.c:734 netdev_alloc_skb include/linux/skbuff.h:3414 [inline] dev_alloc_skb include/linux/skbuff.h:3427 [inline] __ieee80211_beacon_get+0xeeb/0x17b0 net/mac80211/tx.c:5471 ieee80211_beacon_get_tim+0xb4/0x2b0 net/mac80211/tx.c:5593 ieee80211_beacon_get include/net/mac80211.h:5638 [inline] mac80211_hwsim_beacon_tx+0x3ce/0x860 drivers/net/wireless/virtual/mac80211_hwsim.c:2319 __iterate_interfaces+0x2ab/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_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:finish_task_switch+0x26b/0x950 kernel/sched/core.c:5264 Code: 0f 84 3c 01 00 00 48 85 db 0f 85 63 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 2f b8 de 09 e8 2a f4 35 00 fb 4c 8b 65 c0 <49> 8d bc 24 18 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0 RSP: 0018:ffffc90004e96758 EFLAGS: 00000282 RAX: 8fd7dcc7c7938b00 RBX: 0000000000000000 RCX: 8fd7dcc7c7938b00 RDX: 0000000000000000 RSI: ffffffff8d99645e RDI: ffffffff8be29180 RBP: ffffc90004e967b0 R08: ffffffff8fa1d2f7 R09: 1ffffffff1f43a5e R10: dffffc0000000000 R11: fffffbfff1f43a5f R12: ffff88807d848000 R13: dffffc0000000000 R14: ffff888078978000 R15: ffff8880b873ab98 context_switch kernel/sched/core.c:5399 [inline] __schedule+0x16fd/0x4d00 kernel/sched/core.c:6785 preempt_schedule_notrace+0xd1/0x110 kernel/sched/core.c:7058 preempt_schedule_notrace_thunk+0x16/0x30 arch/x86/entry/thunk.S:13 class_preempt_notrace_destructor include/linux/preempt.h:482 [inline] __do_trace_lock_acquire include/trace/events/lock.h:24 [inline] trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0x347/0x360 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 save_stack+0xf5/0x1f0 mm/page_owner.c:156 __reset_page_owner+0x71/0x1f0 mm/page_owner.c:308 reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1248 [inline] __free_frozen_pages+0xc71/0xe70 mm/page_alloc.c:2706 __kasan_populate_vmalloc mm/kasan/shadow.c:383 [inline] kasan_populate_vmalloc+0x18a/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+0xb2/0xf0 mm/vmalloc.c:3981 bpf_prog_calc_tag+0xb9/0x620 kernel/bpf/core.c:307 resolve_pseudo_ldimm64+0xbc/0xc50 kernel/bpf/verifier.c:20493 bpf_check+0x1c58/0x1d2e0 kernel/bpf/verifier.c:24628 bpf_prog_load+0x1318/0x1930 kernel/bpf/syscall.c:2972 __sys_bpf+0x528/0x870 kernel/bpf/syscall.c:6022 __do_sys_bpf kernel/bpf/syscall.c:6132 [inline] __se_sys_bpf kernel/bpf/syscall.c:6130 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6130 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: 0033:0x7f00cb78e929 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:00007f00cc5ec038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f00cb9b6160 RCX: 00007f00cb78e929 RDX: 0000000000000048 RSI: 00002000000054c0 RDI: 0000000000000005 RBP: 00007f00cb810ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f00cb9b6160 R15: 00007fff14ed1368