watchdog: BUG: soft lockup - CPU#1 stuck for 144s! [syz.2.20:5965] Modules linked in: irq event stamp: 11200439 hardirqs last enabled at (11200438): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:357 hardirqs last disabled at (11200439): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (113322): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (113322): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (113322): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 softirqs last disabled at (113325): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (113325): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (113325): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 CPU: 1 UID: 0 PID: 5965 Comm: syz.2.20 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:rcu_read_lock_held_common kernel/rcu/update.c:346 [inline] RIP: 0010:rcu_read_lock_held+0x4/0x50 kernel/rcu/update.c:349 Code: 0d c3 cc cc cc cc cc 66 66 66 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 <53> e8 b6 25 b0 09 85 c0 74 26 31 db e8 5b 2d 01 00 84 c0 74 20 e8 RSP: 0018:ffffc90000a07f18 EFLAGS: 00000202 RAX: ffffffff81cadacb RBX: 0000000000000001 RCX: 0000000000000100 RDX: ffff888029875a00 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90000a08018 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff81cad457 R12: 0000000000000001 R13: 1ffff92000140ff0 R14: ffffffff81cad457 R15: ffff8880313a6100 FS: 00007ff760bf66c0(0000) GS:ffff8881261cc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000015a000 CR3: 000000002fa56000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: trace_call_bpf+0x734/0x850 kernel/trace/bpf_trace.c:124 perf_trace_run_bpf_submit+0x78/0x170 kernel/events/core.c:10788 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:5829 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:4341 [inline] __kmalloc_node_noprof+0x276/0x4e0 mm/slub.c:4347 kmalloc_array_node_noprof include/linux/slab.h:1020 [inline] alloc_slab_obj_exts mm/slub.c:1992 [inline] account_slab mm/slub.c:2595 [inline] allocate_slab+0x17c/0x3b0 mm/slub.c:2651 new_slab mm/slub.c:2686 [inline] ___slab_alloc+0xbfc/0x1480 mm/slub.c:3872 __slab_alloc mm/slub.c:3962 [inline] __slab_alloc_node mm/slub.c:4037 [inline] slab_alloc_node mm/slub.c:4198 [inline] kmem_cache_alloc_noprof+0x283/0x3c0 mm/slub.c:4217 dst_alloc+0x105/0x170 net/core/dst.c:89 ip6_dst_alloc net/ipv6/route.c:342 [inline] icmp6_dst_alloc+0x75/0x420 net/ipv6/route.c:3315 ndisc_send_skb+0x41f/0x1400 net/ipv6/ndisc.c:493 addrconf_rs_timer+0x369/0x670 net/ipv6/addrconf.c:4038 call_timer_fn+0x17b/0x5f0 kernel/time/timer.c:1789 expire_timers kernel/time/timer.c:1840 [inline] __run_timers kernel/time/timer.c:2414 [inline] __run_timer_base+0x61a/0x860 kernel/time/timer.c:2426 run_timer_base kernel/time/timer.c:2435 [inline] run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2445 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:rcu_read_lock_held_common kernel/rcu/update.c:346 [inline] RIP: 0010:rcu_read_lock_held+0x4/0x50 kernel/rcu/update.c:349 Code: 0d c3 cc cc cc cc cc 66 66 66 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 <53> e8 b6 25 b0 09 85 c0 74 26 31 db e8 5b 2d 01 00 84 c0 74 20 e8 RSP: 0018:ffffc900051f67d8 EFLAGS: 00000202 RAX: ffffffff81cad544 RBX: 0000000000000001 RCX: 0000000000000002 RDX: ffff888029875a00 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc900051f68d8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff81cad457 R12: 0000000000000001 R13: ffffc900051f6860 R14: ffff8880313a6100 R15: ffffffff8de0aa68 trace_call_bpf+0x1ad/0x850 kernel/trace/bpf_trace.c:146 perf_trace_run_bpf_submit+0x78/0x170 kernel/events/core.c:10788 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:5829 rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:841 [inline] is_bpf_text_address+0x47/0x2b0 kernel/bpf/core.c:772 kernel_text_address+0xa5/0xe0 kernel/extable.c:125 __kernel_text_address+0xd/0x40 kernel/extable.c:79 unwind_get_return_address+0x4d/0x90 arch/x86/kernel/unwind_orc.c:369 arch_stack_walk+0xfc/0x150 arch/x86/kernel/stacktrace.c:26 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] kfree+0x193/0x440 mm/slub.c:4855 free_func_state kernel/bpf/verifier.c:1657 [inline] free_verifier_state kernel/bpf/verifier.c:1667 [inline] pop_stack+0x28a/0x470 kernel/bpf/verifier.c:2010 do_check+0x70a2/0xd630 kernel/bpf/verifier.c:19655 do_check_common+0x168d/0x20b0 kernel/bpf/verifier.c:22776 do_check_main kernel/bpf/verifier.c:22867 [inline] bpf_check+0x13679/0x19a70 kernel/bpf/verifier.c:24033 bpf_prog_load+0x1318/0x1930 kernel/bpf/syscall.c:2971 __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: 0033:0x7ff762d8e969 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:00007ff760bf6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007ff762fb5fa0 RCX: 00007ff762d8e969 RDX: 0000000000000048 RSI: 0000200000000100 RDI: 0000000000000005 RBP: 00007ff762e10ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ff762fb5fa0 R15: 00007ffde43365a8 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 5970 Comm: syz.1.22 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:do_perf_trace_lock_acquire include/trace/events/lock.h:24 [inline] RIP: 0010:perf_trace_lock_acquire+0xf5/0x410 include/trace/events/lock.h:24 Code: 49 89 c5 49 8d 5e 60 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 48 58 84 00 48 8b 03 48 89 44 24 08 e8 fb 95 b8 09 <89> c3 83 f8 08 0f 83 7e 02 00 00 48 8d 1c dd 10 dc 96 8d 48 89 d8 RSP: 0018:ffffc90000006e60 EFLAGS: 00000082 RAX: 0000000000000000 RBX: ffffffff8de0aa60 RCX: ffbb25b99d473900 RDX: 0000000000000000 RSI: ffffffff8bc1cdc0 RDI: ffffffff8bc1cd80 RBP: ffffc90000006f60 R08: 0000000000000002 R09: 0000000000000001 R10: dffffc0000000000 R11: fffff52000000e08 R12: 1ffff92000000dd4 R13: 0000000000000010 R14: ffffffff8de0aa00 R15: dffffc0000000000 FS: 00007f803800a6c0(0000) GS:ffff8881260cc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe322ec358 CR3: 0000000031288000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __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:5829 seqcount_lockdep_reader_access+0xc9/0x1c0 include/linux/seqlock.h:72 ktime_get_update_offsets_now+0x60/0x3d0 kernel/time/timekeeping.c:2393 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: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: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+0x1315/0x2390 arch/x86/kernel/unwind_orc.c:494 Code: 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 8d 47 fc 48 0f 47 d8 RSP: 0018:ffffc90000007378 EFLAGS: 00000246 RAX: fffffffff209a6f1 RBX: ffffffff8f9468d0 RCX: dffffc0000000000 RDX: ffffffff8f946894 RSI: ffffffff901035c2 RDI: ffffffff8bc1cd80 RBP: ffffffff8f946894 R08: 0000000000000010 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff817199f5 R12: ffffffff819e0f06 R13: ffffffff8f946894 R14: ffffc90000007448 R15: ffffffff8f9468b0 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_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:preempt_schedule_notrace+0x4/0x110 kernel/sched/core.c:7012 Code: 41 5e 41 5f c3 cc cc cc cc cc 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> 48 89 e5 41 57 41 56 53 48 83 e4 e0 48 83 ec 60 65 48 8b 05 23 RSP: 0018:ffffc900052367b8 EFLAGS: 00000246 RAX: ffbb25b99d473900 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffffc90004c0b000 RSI: 0000000000016632 RDI: 0000000000016633 RBP: ffffc90005236808 R08: ffffc9000523662f R09: 0000000000000000 R10: ffffc90005236620 R11: ffffffffa0000808 R12: 0000000000000002 R13: ffffffff8df3b860 R14: 0000000000000000 R15: 0000000000000000 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:5829 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 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+0x79/0x90 mm/vmalloc.c:3940 bpf_prog_calc_tag+0xb9/0x620 kernel/bpf/core.c:303 resolve_pseudo_ldimm64+0xbc/0xc60 kernel/bpf/verifier.c:20086 bpf_check+0x1bfd/0x19a70 kernel/bpf/verifier.c:24007 bpf_prog_load+0x1318/0x1930 kernel/bpf/syscall.c:2971 __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: 0033:0x7f803718e969 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:00007f803800a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f80373b5fa0 RCX: 00007f803718e969 RDX: 0000000000000094 RSI: 0000200000000700 RDI: 0000000000000005 RBP: 00007f8037210ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f80373b5fa0 R15: 00007ffde19f9078