watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [syz.5.314:7371] Modules linked in: irq event stamp: 11642271 hardirqs last enabled at (11642270): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:357 hardirqs last disabled at (11642271): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (11609880): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (11609880): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (11609880): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 softirqs last disabled at (11609883): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (11609883): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (11609883): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 CPU: 0 UID: 0 PID: 7371 Comm: syz.5.314 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:__asan_memset+0x7/0x50 mm/kasan/shadow.c:83 Code: 00 00 e9 1c e6 ff ff 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 41 56 <53> 48 89 d3 89 f5 49 89 fe 48 8b 4c 24 18 48 89 d6 ba 01 00 00 00 RSP: 0018:ffffc90000007360 EFLAGS: 00000246 RAX: 1ffff92000000e90 RBX: ffffc90000007480 RCX: 1ffff92000000e01 RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffffc90000007498 RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff817199f5 R12: ffffc90000007980 R13: ffffc90000007498 R14: ffffc90000007448 R15: ffffc90000007490 FS: 00007fce630066c0(0000) GS:ffff8881260cc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000034000 CR3: 000000004ee30000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: unwind_next_frame+0xc98/0x2390 arch/x86/kernel/unwind_orc.c:592 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:4161 [inline] slab_alloc_node mm/slub.c:4210 [inline] kmem_cache_alloc_node_noprof+0x1bb/0x3c0 mm/slub.c:4262 kmalloc_reserve+0xbd/0x290 net/core/skbuff.c:577 __alloc_skb+0x142/0x2d0 net/core/skbuff.c:668 skb_copy+0x188/0x800 net/core/skbuff.c:2131 mac80211_hwsim_tx_frame_no_nl+0xc85/0x1180 drivers/net/wireless/virtual/mac80211_hwsim.c:1866 mac80211_hwsim_tx_frame+0x1b5/0x200 drivers/net/wireless/virtual/mac80211_hwsim.c:2217 mac80211_hwsim_beacon_tx+0x3f6/0x860 drivers/net/wireless/virtual/mac80211_hwsim.c:2317 __iterate_interfaces+0x2a8/0x590 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:2347 __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+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_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:__schedule_loop kernel/sched/core.c:6845 [inline] RIP: 0010:schedule+0x160/0x360 kernel/sched/core.c:6860 Code: 00 7e df 8d 4c 89 f6 e8 ce 2a 47 f6 49 89 de 49 c1 ee 03 eb 09 48 f7 03 08 00 00 00 74 2c bf 01 00 00 00 e8 52 ca 39 f6 31 ff bb b1 ff ff bf 01 00 00 00 e8 f1 cb 39 f6 43 80 3c 2e 00 74 d5 RSP: 0018:ffffc90005767a20 EFLAGS: 00000246 RAX: 1ffff11005ffd65c RBX: ffff88802ffe9e00 RCX: ffffffff99806600 RDX: 0000000000000000 RSI: ffffffff8bc1ce00 RDI: 0000000000000000 RBP: 1ffff11005ffd3c3 R08: ffffffff8f7ed377 R09: 1ffffffff1efda6e R10: dffffc0000000000 R11: fffffbfff1efda6f R12: ffff88802ffe9e2c R13: dffffc0000000000 R14: 1ffff11005ffd3c0 R15: ffff88802ffeb088 futex_wait_queue+0x14b/0x200 kernel/futex/waitwake.c:369 __futex_wait+0x11e/0x2a0 kernel/futex/waitwake.c:668 futex_wait+0x104/0x360 kernel/futex/waitwake.c:696 do_futex+0x333/0x420 kernel/futex/syscalls.c:102 __do_sys_futex kernel/futex/syscalls.c:179 [inline] __se_sys_futex+0x36f/0x400 kernel/futex/syscalls.c:160 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: 0033:0x7fce6218e969 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:00007fce630060e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00007fce623b5fa8 RCX: 00007fce6218e969 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fce623b5fa8 RBP: 00007fce623b5fa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fce623b5fac R13: 0000000000000000 R14: 00007ffd0d3b1300 R15: 00007ffd0d3b13e8 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 7362 Comm: syz.7.311 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:arch_static_branch arch/x86/include/asm/jump_label.h:36 [inline] RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:149 [inline] RIP: 0010:wrmsr arch/x86/include/asm/msr.h:256 [inline] RIP: 0010:native_apic_msr_write+0x39/0x50 arch/x86/include/asm/apic.h:212 Code: 74 2a 83 ff 30 74 25 eb 10 81 ff d0 00 00 00 74 1b 81 ff e0 00 00 00 74 13 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <66> 90 c3 cc cc cc cc cc f3 0f 1e fa 89 f6 31 d2 e9 72 0a 7e 03 66 RSP: 0018:ffffc90000a08518 EFLAGS: 00000046 RAX: 0000000000000167 RBX: ffff8880b8923500 RCX: 0000000000000838 RDX: 0000000000000000 RSI: 0000000000000167 RDI: 0000000000000838 RBP: 0000000000000000 R08: ffffc90000a0820f R09: 0000000000000000 R10: ffffc90000a08200 R11: ffffffff816f2250 R12: 00000000100058eb R13: dffffc0000000000 R14: 0000000000000167 R15: 0000000000000020 FS: 00007fab67dfd6c0(0000) GS:ffff8881261cc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa948400036 CR3: 00000000120b4000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: apic_write arch/x86/include/asm/apic.h:405 [inline] lapic_next_event+0x11/0x20 arch/x86/kernel/apic/apic.c:415 clockevents_program_event+0x1cc/0x360 kernel/time/clockevents.c:334 hrtimer_interrupt+0x620/0xaa0 kernel/time/hrtimer.c:1900 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] __sysvec_apic_timer_interrupt+0x108/0x410 arch/x86/kernel/apic/apic.c:1055 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:430 [inline] RIP: 0010:__pv_queued_spin_lock_slowpath+0x6ce/0xb60 kernel/locking/qspinlock.c:325 Code: ff ff 66 c7 84 24 90 00 00 00 00 01 48 b8 00 00 00 00 00 fc ff df 48 8b 4c 24 20 0f b6 04 01 84 c0 75 46 80 3b 00 74 09 f3 90 <41> ff c6 75 d3 eb 4b 48 89 df be 02 00 00 00 e8 3e 3a c9 f6 48 8d RSP: 0018:ffffc90000a08780 EFLAGS: 00000206 RAX: 0000000000000000 RBX: ffffffff8eb593a0 RCX: 1ffffffff1d6b274 RDX: 0000000000000100 RSI: ffffffff8d749f78 RDI: ffff8880b893aa94 RBP: ffffc90000a08898 R08: ffffffff8f7ed377 R09: 1ffffffff1efda6e R10: dffffc0000000000 R11: fffffbfff1efda6f R12: 1ffffffff1bb48a4 R13: 0000000000000000 R14: 00000000ffffc257 R15: 1ffffffff1d6b274 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:572 [inline] queued_spin_lock_slowpath+0x43/0x50 arch/x86/include/asm/qspinlock.h:51 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x21f/0x290 kernel/locking/spinlock_debug.c:116 spin_lock include/linux/spinlock.h:351 [inline] mac80211_hwsim_tx_frame_no_nl+0x71a/0x1180 drivers/net/wireless/virtual/mac80211_hwsim.c:1817 mac80211_hwsim_tx_frame+0x1b5/0x200 drivers/net/wireless/virtual/mac80211_hwsim.c:2217 mac80211_hwsim_beacon_tx+0x3f6/0x860 drivers/net/wireless/virtual/mac80211_hwsim.c:2317 __iterate_interfaces+0x2a8/0x590 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:2347 __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+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:spin_unlock include/linux/spinlock.h:391 [inline] RIP: 0010:__text_poke+0x929/0xbf0 arch/x86/kernel/alternative.c:2330 Code: 9d 52 59 00 90 0f 0b 90 e9 c9 fe ff ff e8 8f 52 59 00 e8 4a 6b ef 09 4d 85 e4 74 dc e8 80 52 59 00 fb 48 8b bc 24 e0 00 00 00 62 ed f1 09 e8 ed 71 ef 09 89 c3 31 ff 89 c6 e8 a2 56 59 00 85 RSP: 0018:ffffc9000578f380 EFLAGS: 00000246 RAX: ffffffff81666c50 RBX: 0000000000000000 RCX: 0000000000080000 RDX: ffffc9001d7dc000 RSI: 000000000007ffff RDI: ffff88801a07b060 RBP: ffffc9000578f4d0 R08: ffffffff8f7ed377 R09: 1ffffffff1efda6e R10: dffffc0000000000 R11: fffffbfff1efda6f R12: 0000000000000200 R13: dffffc0000000000 R14: ffffffff894e06c5 R15: 1ffff92000af1e80 text_poke arch/x86/kernel/alternative.c:2354 [inline] text_poke_bp_batch+0x76b/0x940 arch/x86/kernel/alternative.c:2743 text_poke_bp+0xaf/0x100 arch/x86/kernel/alternative.c:2892 __static_call_transform+0x4b5/0x760 arch/x86/kernel/static_call.c:111 arch_static_call_transform+0x98/0xc0 arch/x86/kernel/static_call.c:-1 __static_call_update+0x3c3/0x5d0 kernel/static_call_inline.c:209 bpf_dispatcher_update kernel/bpf/dispatcher.c:126 [inline] bpf_dispatcher_change_prog+0xa4c/0xc90 kernel/bpf/dispatcher.c:168 bpf_prog_test_run_xdp+0x84a/0xf90 net/bpf/test_run.c:1336 bpf_prog_test_run+0x2a9/0x340 kernel/bpf/syscall.c:4427 __sys_bpf+0x4a4/0x860 kernel/bpf/syscall.c:5852 __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: 0033:0x7fab66f8e969 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:00007fab67dfd038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fab671b6080 RCX: 00007fab66f8e969 RDX: 0000000000000048 RSI: 0000200000000600 RDI: 000000000000000a RBP: 00007fab67010ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fab671b6080 R15: 00007ffceddaef98