watchdog: BUG: soft lockup - CPU#1 stuck for 144s! [syz.3.479:7914] Modules linked in: irq event stamp: 13736839 hardirqs last enabled at (13736838): [] irqentry_exit+0x5dd/0x660 kernel/entry/common.c:219 hardirqs last disabled at (13736839): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1056 softirqs last enabled at (13190528): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last enabled at (13190528): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last enabled at (13190528): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 softirqs last disabled at (13190531): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (13190531): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (13190531): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 CPU: 1 UID: 0 PID: 7914 Comm: syz.3.479 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:__rcu_read_unlock+0x6/0xe0 kernel/rcu/tree_plugin.h:431 Code: c1 03 38 c1 7c dc 48 89 df e8 66 fa 7f 00 eb d2 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 57 <41> 56 41 55 41 54 53 49 bf 00 00 00 00 00 fc ff df 65 48 8b 3c 25 RSP: 0018:ffffc90000a08348 EFLAGS: 00000282 RAX: dce46ccddf019500 RBX: ffffffff9070dc01 RCX: dce46ccddf019500 RDX: 0000000000000002 RSI: ffffffff8d979ceb RDI: ffffffff8bc086e0 RBP: dffffc0000000000 R08: ffffc90000a07f97 R09: 0000000000000000 R10: ffffc90000a07f88 R11: fffff52000140ff3 R12: ffffc90000a08b28 R13: ffffc90000a01000 R14: ffffc90000a08428 R15: ffffffff81743f85 FS: 00007f0f573f66c0(0000) GS:ffff888125f34000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbe842dace0 CR3: 000000001b292000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: rcu_read_unlock include/linux/rcupdate.h:899 [inline] class_rcu_destructor include/linux/rcupdate.h:1195 [inline] unwind_next_frame+0x1ab6/0x23d0 arch/x86/kernel/unwind_orc.c:695 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:56 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:77 unpoison_slab_object mm/kasan/common.c:339 [inline] __kasan_mempool_unpoison_object+0x9f/0x130 mm/kasan/common.c:563 kasan_mempool_unpoison_object include/linux/kasan.h:390 [inline] napi_skb_cache_get+0x3c9/0x780 net/core/skbuff.c:305 __alloc_skb+0x214/0x430 net/core/skbuff.c:673 skb_copy+0x188/0x800 net/core/skbuff.c:2162 mac80211_hwsim_tx_frame_no_nl+0xcd3/0x11c0 drivers/net/wireless/virtual/mac80211_hwsim.c:1891 mac80211_hwsim_tx_frame+0x1b5/0x200 drivers/net/wireless/virtual/mac80211_hwsim.c:2264 mac80211_hwsim_beacon_tx+0x3e8/0x870 drivers/net/wireless/virtual/mac80211_hwsim.c:2365 __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/0x180 drivers/net/wireless/virtual/mac80211_hwsim.c:2395 __run_hrtimer kernel/time/hrtimer.c:1777 [inline] __hrtimer_run_queues+0x51c/0xc30 kernel/time/hrtimer.c:1841 hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1858 handle_softirqs+0x27d/0x850 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x1f0 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+0xb0/0x150 kernel/sched/core.c:7190 Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 10 00 00 00 74 64 bf 01 00 00 00 e8 8b d6 33 f6 e8 26 54 6c f6 fb bf 01 00 00 00 1b a8 ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24 RSP: 0018:ffffc9000bd7fb00 EFLAGS: 00000286 RAX: dce46ccddf019500 RBX: 0000000000000000 RCX: dce46ccddf019500 RDX: 0000000000000000 RSI: ffffffff8d792d97 RDI: 0000000000000001 RBP: ffffc9000bd7fba0 R08: ffffffff8f822377 R09: 1ffffffff1f0446e R10: dffffc0000000000 R11: fffffbfff1f0446f R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920017aff60 irqentry_exit+0x5d8/0x660 kernel/entry/common.c:216 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:kmem_cache_alloc_lru_noprof+0x0/0x6e0 mm/slub.c:5281 Code: e6 a7 16 ff e9 63 ff ff ff 90 0f 0b 90 eb bb 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 0f 1e fa 55 41 57 41 56 41 55 41 54 53 48 83 ec 38 89 d5 48 89 RSP: 0018:ffffc9000bd7fcb0 EFLAGS: 00000283 RAX: ffffffff82406da9 RBX: ffffc9000bd7fd80 RCX: 0000000000080000 RDX: 0000000000000cc0 RSI: ffff88801d69a798 RDI: ffff88801aec3780 RBP: ffffc9000bd7fe20 R08: ffffffff8c6f02e0 R09: 1ffff110036eba70 R10: dffffc0000000000 R11: ffffed10036eba71 R12: ffffc9000bd7fd80 R13: ffffffff8f377f28 R14: ffff88801d69a000 R15: ffff88801aec3780 __d_alloc+0x37/0x6f0 fs/dcache.c:1730 d_alloc_pseudo+0x21/0xc0 fs/dcache.c:1861 alloc_path_pseudo fs/file_table.c:363 [inline] alloc_file_pseudo+0xcc/0x210 fs/file_table.c:379 sock_alloc_file+0xb8/0x2e0 net/socket.c:483 sock_map_fd net/socket.c:513 [inline] __sys_socket+0x13d/0x1b0 net/socket.c:1756 __do_sys_socket net/socket.c:1761 [inline] __se_sys_socket net/socket.c:1759 [inline] __x64_sys_socket+0x7a/0x90 net/socket.c:1759 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0f5918f749 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:00007f0f573f6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007f0f593e5fa0 RCX: 00007f0f5918f749 RDX: 000000000000000c RSI: 0000000000000003 RDI: 0000000000000010 RBP: 00007f0f59213f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f0f593e6038 R14: 00007f0f593e5fa0 R15: 00007ffe00f15b18 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 7895 Comm: syz.8.477 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:trylock_clear_pending kernel/locking/qspinlock_paravirt.h:122 [inline] RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:431 [inline] RIP: 0010:__pv_queued_spin_lock_slowpath+0x6a6/0xb60 kernel/locking/qspinlock.c:325 Code: 8b 44 24 40 42 0f b6 04 30 84 c0 0f 85 42 01 00 00 c6 07 00 43 0f b6 04 37 84 c0 0f 85 60 01 00 00 c6 01 01 41 be 00 80 ff ff <66> c7 84 24 90 00 00 00 00 01 48 b8 00 00 00 00 00 fc ff df 48 8b RSP: 0018:ffffc90000007780 EFLAGS: 00000286 RAX: 0000000000000000 RBX: ffffffff8eb64ea0 RCX: 1ffffffff1d6c9d4 RDX: 0000000000000100 RSI: ffffffff8d792d97 RDI: ffff8880b863b854 RBP: ffffc90000007898 R08: ffffffff8f822377 R09: 1ffffffff1f0446e R10: dffffc0000000000 R11: fffffbfff1f0446f R12: 1ffffffff1bb58f0 R13: 0000000000000000 R14: 00000000ffff9269 R15: 1ffffffff1d6c9d4 FS: 00007fb0b27a06c0(0000) GS:ffff888125e34000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000563c9658c008 CR3: 0000000034f78000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:557 [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+0x718/0x11c0 drivers/net/wireless/virtual/mac80211_hwsim.c:1842 mac80211_hwsim_tx_frame+0x1b5/0x200 drivers/net/wireless/virtual/mac80211_hwsim.c:2264 mac80211_hwsim_beacon_tx+0x3e8/0x870 drivers/net/wireless/virtual/mac80211_hwsim.c:2365 __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/0x180 drivers/net/wireless/virtual/mac80211_hwsim.c:2395 __run_hrtimer kernel/time/hrtimer.c:1777 [inline] __hrtimer_run_queues+0x51c/0xc30 kernel/time/hrtimer.c:1841 hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1858 handle_softirqs+0x27d/0x850 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x1f0 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:lock_is_held_type+0x137/0x190 kernel/locking/lockdep.c:5945 Code: 01 75 44 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 75 4c 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 05 49 ba 22 07 <48> 3b 44 24 08 75 43 89 d8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f RSP: 0018:ffffc9000bab7018 EFLAGS: 00000206 RAX: 196f14088af16a00 RBX: 0000000000000000 RCX: 196f14088af16a00 RDX: 0000000000000000 RSI: ffffffff8d979ceb RDI: ffffffff8bc086e0 RBP: 00000000ffffffff R08: ffffffff8f822377 R09: 1ffffffff1f0446e R10: dffffc0000000000 R11: fffffbfff1f0446f R12: 0000000000000246 R13: ffff888027199e80 R14: ffffffff8df41a80 R15: 0000000000000001 lock_is_held include/linux/lockdep.h:249 [inline] schedule_debug kernel/sched/core.c:5835 [inline] __schedule+0x229/0x5000 kernel/sched/core.c:6740 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7190 irqentry_exit+0x5d8/0x660 kernel/entry/common.c:216 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:__put_partials+0x26/0x170 mm/slub.c:3856 Code: 90 90 90 90 48 85 f6 0f 84 53 01 00 00 55 41 57 41 56 41 55 41 54 53 48 83 ec 18 49 89 f7 49 89 fe 48 c7 44 24 08 00 00 00 00 <48> c7 04 24 00 00 00 00 45 31 ed 49 8b 07 49 8b 5f 10 48 c1 e8 3a RSP: 0018:ffffc9000bab7438 EFLAGS: 00000292 RAX: 196f14088af16a00 RBX: ffff88813ffa6780 RCX: 196f14088af16a00 RDX: 0000000000000007 RSI: ffffea0000ba5100 RDI: ffff88813ffa6780 RBP: 0000000000000001 R08: ffffffff8f822377 R09: 1ffffffff1f0446e R10: dffffc0000000000 R11: fffffbfff1f0446f R12: 0000000000000000 R13: 0000000000000286 R14: ffff88813ffa6780 R15: ffffea0000ba5100 put_cpu_partial+0x1f2/0x2d0 mm/slub.c:3961 __slab_free+0x288/0x2a0 mm/slub.c:5952 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x97/0x100 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:349 kasan_slab_alloc include/linux/kasan.h:252 [inline] slab_post_alloc_hook mm/slub.c:4953 [inline] slab_alloc_node mm/slub.c:5263 [inline] kmem_cache_alloc_node_noprof+0x43c/0x720 mm/slub.c:5315 preload_this_cpu_lock+0x49/0xc0 mm/vmalloc.c:1903 alloc_vmap_area+0x44f/0x14e0 mm/vmalloc.c:2073 __get_vm_area_node+0x1f8/0x300 mm/vmalloc.c:3219 __vmalloc_node_range_noprof+0x371/0x16a0 mm/vmalloc.c:4011 __vmalloc_node_noprof mm/vmalloc.c:4111 [inline] __vmalloc_noprof+0xd2/0x120 mm/vmalloc.c:4127 bpf_prog_alloc_no_stats+0x4a/0x500 kernel/bpf/core.c:106 bpf_prog_alloc+0x3c/0x1a0 kernel/bpf/core.c:155 bpf_prog_load+0x735/0x1a10 kernel/bpf/syscall.c:2992 __sys_bpf+0x5c3/0x8a0 kernel/bpf/syscall.c:6207 __do_sys_bpf kernel/bpf/syscall.c:6320 [inline] __se_sys_bpf kernel/bpf/syscall.c:6318 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6318 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb0b198f749 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:00007fb0b27a0038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fb0b1be5fa0 RCX: 00007fb0b198f749 RDX: 0000000000000094 RSI: 0000200000000f80 RDI: 0000000000000005 RBP: 00007fb0b1a13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fb0b1be6038 R14: 00007fb0b1be5fa0 R15: 00007ffde22d26e8