watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [syz.3.40:6040] Modules linked in: irq event stamp: 11567685 hardirqs last enabled at (11567684): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:357 hardirqs last disabled at (11567685): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (11544766): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (11544766): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (11544766): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 softirqs last disabled at (11544769): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (11544769): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (11544769): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 CPU: 1 UID: 0 PID: 6040 Comm: syz.3.40 Not tainted 6.15.0-rc4-syzkaller-g358b1c0f56eb #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 RIP: 0010:lock_acquire+0x175/0x360 kernel/locking/lockdep.c:5870 Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 eb 32 d7 10 <48> 3b 44 24 58 0f 85 f2 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e RSP: 0018:ffffc90000a082b8 EFLAGS: 00000206 RAX: 8414ae7fbdfccf00 RBX: 0000000000000000 RCX: 8414ae7fbdfccf00 RDX: 0000000000000000 RSI: ffffffff8d93512e RDI: ffffffff8bc1cde0 RBP: ffffffff817199f5 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff817199f5 R12: 0000000000000002 R13: ffffffff8df3b860 R14: 0000000000000000 R15: 0000000000000246 FS: 00007f87a38576c0(0000) GS:ffff8881261cc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c3221cd CR3: 00000000312b4000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: 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 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:2398 [inline] slab_free mm/slub.c:4656 [inline] kmem_cache_free+0x192/0x3f0 mm/slub.c:4758 kfree_skb_reason include/linux/skbuff.h:1279 [inline] kfree_skb include/linux/skbuff.h:1288 [inline] ip6_mc_input+0x9c3/0xbe0 net/ipv6/ip6_input.c:591 NF_HOOK+0x309/0x3a0 include/linux/netfilter.h:314 __netif_receive_skb_one_core net/core/dev.c:5887 [inline] __netif_receive_skb+0xd3/0x380 net/core/dev.c:6000 process_backlog+0x60e/0x14f0 net/core/dev.c:6352 __napi_poll+0xc4/0x480 net/core/dev.c:7324 napi_poll net/core/dev.c:7388 [inline] net_rx_action+0x6ea/0xdf0 net/core/dev.c:7510 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+0x16ea/0x4cd0 kernel/sched/core.c:6727 Code: f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 dc f5 ca f6 4d 89 27 4c 89 f7 4c 89 e6 e8 de 73 dc f5 48 89 c7 e8 76 18 3b f6 <31> ff 4d 39 e6 40 0f 95 c7 48 8b b4 24 c0 00 00 00 e8 c0 21 3b f6 RSP: 0018:ffffc9000500ebe0 EFLAGS: 00000282 RAX: 0000000000000000 RBX: ffff88802f2a338c RCX: 8414ae7fbdfccf00 RDX: 0000000000000000 RSI: ffffffff8d749fcc RDI: ffff888026209618 RBP: ffffc9000500edf0 R08: ffffffff8f7ed377 R09: 1ffffffff1efda6e R10: dffffc0000000000 R11: fffffbfff1efda6f R12: ffff88802f2a1e00 R13: dffffc0000000000 R14: ffff888026208000 R15: ffff8880b8939b50 preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:6947 preempt_schedule+0xae/0xc0 kernel/sched/core.c:6971 preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock_irqrestore+0xfd/0x110 kernel/locking/spinlock.c:194 rcu_preempt_deferred_qs_irqrestore+0x851/0xc40 kernel/rcu/tree_plugin.h:-1 rcu_read_unlock_special+0x3fe/0x4c0 kernel/rcu/tree_plugin.h:693 __rcu_read_unlock+0x84/0xe0 kernel/rcu/tree_plugin.h:438 rcu_read_unlock include/linux/rcupdate.h:873 [inline] class_rcu_destructor include/linux/rcupdate.h:1155 [inline] unwind_next_frame+0x19ae/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 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 alloc_vmap_area+0x251/0x24d0 mm/vmalloc.c:1986 __get_vm_area_node+0x1c5/0x2d0 mm/vmalloc.c:3137 __vmalloc_node_range_noprof+0x2f1/0x12c0 mm/vmalloc.c:3804 __vmalloc_node_noprof mm/vmalloc.c:3907 [inline] __vmalloc_noprof+0x7a/0x90 mm/vmalloc.c:3921 bpf_prog_alloc_no_stats+0x4a/0x4e0 kernel/bpf/core.c:104 bpf_prog_alloc+0x3c/0x1a0 kernel/bpf/core.c:146 bpf_prog_load+0x735/0x1930 kernel/bpf/syscall.c:2881 __sys_bpf+0x5f1/0x860 kernel/bpf/syscall.c:5834 __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: 0033:0x7f87a298e969 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:00007f87a3857038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f87a2bb5fa0 RCX: 00007f87a298e969 RDX: 0000000000000094 RSI: 0000200000000500 RDI: 0000000000000005 RBP: 00007f87a2a10ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f87a2bb5fa0 R15: 00007ffe81d8dd78 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 6037 Comm: syz.1.41 Not tainted 6.15.0-rc4-syzkaller-g358b1c0f56eb #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 RIP: 0010:find_held_lock kernel/locking/lockdep.c:-1 [inline] RIP: 0010:__lock_release kernel/locking/lockdep.c:5533 [inline] RIP: 0010:lock_release+0x12c/0x3e0 kernel/locking/lockdep.c:5887 Code: 24 83 f8 32 0f 83 44 02 00 00 4a 8d 1c ad 00 00 00 00 4c 01 eb 48 8d 6c dd 00 48 89 ef 4c 89 f6 e8 69 bf b7 09 44 89 64 24 14 <45> 89 e5 85 c0 0f 84 dd 00 00 00 48 85 ed 0f 84 19 01 00 00 83 7d RSP: 0018:ffffc90000007018 EFLAGS: 00000046 RAX: 0000000000000001 RBX: 0000000000000014 RCX: 84a9675edf94f700 RDX: ffffffff81eebadf RSI: ffffffff8df3b860 RDI: ffff888026120b90 RBP: ffff888026120b90 R08: ffffc90000006ff7 R09: 0000000000000000 R10: ffffc90000006fe0 R11: fffff52000000dff R12: 0000000000000004 R13: 0000000000000004 R14: ffffffff8df3b860 R15: ffff888026120000 FS: 0000000000000000(0000) GS:ffff8881260cc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f70b1fb6038 CR3: 000000007d0c4000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: rcu_lock_release include/linux/rcupdate.h:341 [inline] rcu_read_unlock include/linux/rcupdate.h:871 [inline] __perf_event_output kernel/events/core.c:8364 [inline] perf_event_output_forward+0x37f/0x430 kernel/events/core.c:8373 __perf_event_overflow+0x7cc/0xe10 kernel/events/core.c:10249 perf_swevent_hrtimer+0x3c2/0x540 kernel/events/core.c:11613 __run_hrtimer kernel/time/hrtimer.c:1761 [inline] __hrtimer_run_queues+0x4dd/0xc60 kernel/time/hrtimer.c:1825 hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1887 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:seqcount_lockdep_reader_access+0x17e/0x1c0 include/linux/seqlock.h:75 Code: 00 4d 85 e4 75 16 e8 01 4a 11 00 eb 15 e8 fa 49 11 00 e8 b5 62 a7 09 4d 85 e4 74 ea e8 eb 49 11 00 fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 3e 00 00 00 00 66 43 c7 44 3e 09 00 00 43 c6 44 3e 0b 00 RSP: 0018:ffffc90000007880 EFLAGS: 00000246 RAX: ffffffff81ae74e5 RBX: 0000000000000000 RCX: ffff888026120000 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000007928 R08: ffffffff8f7ed377 R09: 1ffffffff1efda6e R10: dffffc0000000000 R11: fffffbfff1efda6f R12: 0000000000000200 R13: ffff888059e778c0 R14: 1ffff92000000f10 R15: dffffc0000000000 ktime_get_with_offset+0x8c/0x2a0 kernel/time/timekeeping.c:793 ktime_get_boottime include/linux/timekeeping.h:105 [inline] ktime_get_boottime_ns include/linux/timekeeping.h:194 [inline] mac80211_hwsim_tx_frame_no_nl+0x6b3/0x1180 drivers/net/wireless/virtual/mac80211_hwsim.c:1810 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:zap_present_folio_ptes mm/memory.c:1509 [inline] RIP: 0010:zap_present_ptes mm/memory.c:1586 [inline] RIP: 0010:do_zap_pte_range mm/memory.c:1687 [inline] RIP: 0010:zap_pte_range mm/memory.c:1731 [inline] RIP: 0010:zap_pmd_range mm/memory.c:1823 [inline] RIP: 0010:zap_pud_range mm/memory.c:1852 [inline] RIP: 0010:zap_p4d_range mm/memory.c:1873 [inline] RIP: 0010:unmap_page_range+0x1586/0x4210 mm/memory.c:1894 Code: 0e b7 ff 4c 8b a4 24 98 00 00 00 ff 8c 24 e4 01 00 00 45 31 ff e9 76 01 00 00 4d 89 ec e8 d2 0e b7 ff 4c 8b 6c 24 40 4c 89 ee <48> 83 e6 20 31 ff e8 9f 13 b7 ff 4c 89 e8 48 83 e0 20 0f 85 c8 00 RSP: 0018:ffffc9000501f420 EFLAGS: 00000293 RAX: ffffffff8208affe RBX: 1ffffd40003822db RCX: ffff888026120000 RDX: 0000000000000000 RSI: 800000007045b007 RDI: 0000000000000000 RBP: ffffc9000501f6b0 R08: ffff88801dc15cbf R09: 1ffff11003b82b97 R10: dffffc0000000000 R11: ffffed1003b82b98 R12: dffffc0000000000 R13: 800000007045b007 R14: ffffea0001c116d8 R15: 0400000000000000 unmap_vmas+0x25d/0x3c0 mm/memory.c:1984 exit_mmap+0x245/0xba0 mm/mmap.c:1284 __mmput+0x118/0x420 kernel/fork.c:1379 exit_mm+0x1da/0x2c0 kernel/exit.c:589 do_exit+0x859/0x2550 kernel/exit.c:940 do_group_exit+0x21c/0x2d0 kernel/exit.c:1102 get_signal+0x125e/0x1310 kernel/signal.c:3034 arch_do_signal_or_restart+0x95/0x780 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x8b/0x120 kernel/entry/common.c:218 do_syscall_64+0x103/0x210 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5dca18e969 Code: Unable to access opcode bytes at 0x7f5dca18e93f. RSP: 002b:00007f5dc7ff6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: 0000000000000007 RBX: 00007f5dca3b5fa0 RCX: 00007f5dca18e969 RDX: 0000000000000000 RSI: 0000000400000002 RDI: 0000000000000010 RBP: 00007f5dca210ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f5dca3b5fa0 R15: 00007fff0699ed88