watchdog: BUG: soft lockup - CPU#0 stuck for 144s! [syz.6.1065:10177] Modules linked in: irq event stamp: 12411269 hardirqs last enabled at (12411268): [] irqentry_exit+0x5dd/0x660 kernel/entry/common.c:219 hardirqs last disabled at (12411269): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1056 softirqs last enabled at (12313736): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last enabled at (12313736): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last enabled at (12313736): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 softirqs last disabled at (12313739): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (12313739): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (12313739): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 CPU: 0 UID: 0 PID: 10177 Comm: syz.6.1065 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:filter_match_preds+0xc9a/0x3ce0 kernel/trace/trace_events_filter.c:-1 Code: 41 39 dd 75 27 e8 16 4b f6 ff 4c 89 f8 48 c1 e8 03 48 bb 00 00 00 00 00 fc ff df 0f b6 04 18 84 c0 0f 85 f7 21 00 00 45 8b 2f 14 e8 ef 4a f6 ff 48 bb 00 00 00 00 00 fc ff df 44 8b 6c 24 1c RSP: 0018:ffffc900000071e8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff88802fe03d00 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff88805c72c680 R08: ffff88802fe03d00 R09: 0000000000000006 R10: 0000000000000006 R11: 0000000000000100 R12: 0000000000000004 R13: 0000000000000001 R14: ffff88805c72c684 R15: ffff88805c72c680 FS: 00007f650e8376c0(0000) GS:ffff8881260b1000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2968e07440 CR3: 000000003ad28000 CR4: 00000000003526f0 DR0: 0000200000000240 DR1: 0000000000000000 DR2: 0000200000000300 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: perf_tp_filter_match kernel/events/core.c:10972 [inline] perf_tp_event_match kernel/events/core.c:10989 [inline] perf_tp_event+0x545/0x1380 kernel/events/core.c:11072 perf_trace_run_bpf_submit+0xee/0x170 kernel/events/core.c:11007 do_perf_trace_lock include/trace/events/lock.h:50 [inline] perf_trace_lock+0x2f8/0x3b0 include/trace/events/lock.h:50 __do_trace_lock_release include/trace/events/lock.h:69 [inline] trace_lock_release include/trace/events/lock.h:69 [inline] lock_release+0x389/0x3b0 kernel/locking/lockdep.c:5879 rcu_lock_release include/linux/rcupdate.h:341 [inline] rcu_read_unlock include/linux/rcupdate.h:897 [inline] class_rcu_destructor include/linux/rcupdate.h:1195 [inline] unwind_next_frame+0x19a9/0x2390 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:56 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:77 __kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:587 kasan_save_free_info mm/kasan/kasan.h:406 [inline] poison_slab_object mm/kasan/common.c:252 [inline] __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:284 kasan_slab_free include/linux/kasan.h:234 [inline] slab_free_hook mm/slub.c:2540 [inline] __rcu_free_sheaf_prepare+0x123/0x2a0 mm/slub.c:2763 rcu_free_sheaf+0x1f/0x130 mm/slub.c:6221 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xd70/0x1870 kernel/rcu/tree.c:2857 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:ringbuf_avail_data_sz kernel/bpf/ringbuf.c:318 [inline] RIP: 0010:____bpf_ringbuf_query kernel/bpf/ringbuf.c:648 [inline] RIP: 0010:bpf_ringbuf_query+0x138/0x220 kernel/bpf/ringbuf.c:640 Code: c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 b0 a5 41 00 48 8b 03 eb 73 48 8d bb 00 10 00 00 48 89 f8 48 c1 e8 03 42 80 3c 38 00 <74> 05 e8 91 a5 41 00 4c 8b a3 00 10 00 00 4c 8d b3 84 00 00 00 4c RSP: 0018:ffffc9000b80f328 EFLAGS: 00000246 RAX: 1ffff92001770400 RBX: ffffc9000bb81000 RCX: 0000000000000007 RDX: ffffffff81e587ef RSI: ffffffff8dfe08e0 RDI: ffffc9000bb82000 RBP: ffffc9000b80f350 R08: ffff88802fe03d00 R09: 0000000000000005 R10: 0000000000000004 R11: 0000000000000002 R12: ffffc900044c7000 R13: dffffc0000000000 R14: 0000000000000000 R15: dffffc0000000000 bpf_prog_861ea19392865dfd+0x3a/0x40 bpf_dispatcher_nop_func include/linux/bpf.h:1376 [inline] __bpf_prog_run include/linux/filter.h:712 [inline] bpf_prog_run include/linux/filter.h:730 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2075 [inline] bpf_trace_run4+0x3f2/0x4b0 kernel/trace/bpf_trace.c:2118 __do_trace_mm_page_alloc include/trace/events/kmem.h:180 [inline] trace_mm_page_alloc+0x113/0x140 include/trace/events/kmem.h:180 __alloc_frozen_pages_noprof+0x1d6/0x370 mm/page_alloc.c:5205 __alloc_pages_noprof mm/page_alloc.c:5217 [inline] alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137 ___alloc_pages_bulk mm/kasan/shadow.c:345 [inline] __kasan_populate_vmalloc mm/kasan/shadow.c:370 [inline] kasan_populate_vmalloc+0xd1/0x270 mm/kasan/shadow.c:435 alloc_vmap_area+0xd4e/0x1470 mm/vmalloc.c:2098 __get_vm_area_node+0x1f8/0x300 mm/vmalloc.c:3193 __vmalloc_node_range_noprof+0x30c/0x12d0 mm/vmalloc.c:3857 __vmalloc_node_noprof mm/vmalloc.c:3960 [inline] __vmalloc_noprof+0xb1/0xf0 mm/vmalloc.c:3974 bpf_prog_alloc_no_stats+0x4a/0x4d0 kernel/bpf/core.c:106 bpf_prog_alloc+0x3c/0x1a0 kernel/bpf/core.c:153 bpf_prog_load+0x735/0x1a10 kernel/bpf/syscall.c:2992 __sys_bpf+0x507/0x860 kernel/bpf/syscall.c:6164 __do_sys_bpf kernel/bpf/syscall.c:6274 [inline] __se_sys_bpf kernel/bpf/syscall.c:6272 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6272 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: 0033:0x7f650d98f749 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:00007f650e837038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f650dbe6090 RCX: 00007f650d98f749 RDX: 0000000000000048 RSI: 000020000000e000 RDI: 0000000000000005 RBP: 00007f650da13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f650dbe6128 R14: 00007f650dbe6090 R15: 00007fff8f9fa828 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 10171 Comm: syz.8.1067 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:seqcount_lockdep_reader_access+0xcf/0x1c0 include/linux/seqlock.h:72 Code: 3a e8 65 39 12 00 48 83 c3 08 4c 8b 75 08 48 89 df 31 f6 31 d2 b9 02 00 00 00 41 b8 01 00 00 00 45 31 c9 41 56 e8 81 18 ef ff <48> 83 c4 08 48 89 df 4c 89 f6 e8 52 49 ef ff eb 42 e8 2b 39 12 00 RSP: 0018:ffffc90000a07ed8 EFLAGS: 00000086 RAX: 90205b5c39896b00 RBX: ffffffff99867508 RCX: 90205b5c39896b00 RDX: 00000000937fbd00 RSI: ffffffff8d952009 RDI: ffffffff8bbfc660 RBP: ffffc90000a07fa0 R08: ffffffff81af1265 R09: ffffffff99867508 R10: ffffc90000a07ac8 R11: fffff52000140f5b R12: dffffc0000000000 R13: 0000000000000000 R14: ffffffff81af1265 R15: 1ffff92000140fdc FS: 00007f5271c636c0(0000) GS:ffff8881261b1000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2968d8de9c CR3: 000000004f418000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: ktime_get+0x45/0x200 kernel/time/timekeeping.c:824 clockevents_program_event+0xe8/0x350 kernel/time/clockevents.c:326 hrtimer_interrupt+0x620/0xaa0 kernel/time/hrtimer.c:1916 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1045 [inline] __sysvec_apic_timer_interrupt+0x102/0x3e0 arch/x86/kernel/apic/apic.c:1062 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1056 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline] RIP: 0010:write_comp_data kernel/kcov.c:246 [inline] RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x28/0x90 kernel/kcov.c:321 Code: 90 90 f3 0f 1e fa 48 8b 04 24 65 48 8b 0c 25 08 f0 76 92 65 8b 15 d8 a0 b5 10 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 57 <83> b9 6c 16 00 00 00 74 4e 8b 91 48 16 00 00 83 fa 03 75 43 48 8b RSP: 0018:ffffc90000a08248 EFLAGS: 00000246 RAX: ffffffff81f24387 RBX: 0000000000000102 RCX: ffff88807c045b80 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000a08300 R08: 0000000000000002 R09: 0000000000000000 R10: ffffc90000a08598 R11: ffffffff81ad4ad0 R12: 1ffff92000141000 R13: dffffc0000000000 R14: ffff88807c045b80 R15: dffffc0000000000 interrupt_context_level include/linux/preempt.h:96 [inline] get_recursion_context kernel/events/internal.h:215 [inline] perf_swevent_get_recursion_context+0x57/0x100 kernel/events/core.c:10688 perf_trace_buf_alloc+0x43/0x280 kernel/trace/trace_event_perf.c:410 do_perf_trace_lock_acquire include/trace/events/lock.h:24 [inline] perf_trace_lock_acquire+0x196/0x410 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+0x2fb/0x340 kernel/locking/lockdep.c:5831 rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:867 [inline] class_rcu_constructor include/linux/rcupdate.h:1195 [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:56 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:77 unpoison_slab_object mm/kasan/common.c:342 [inline] __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:368 kasan_slab_alloc include/linux/kasan.h:252 [inline] slab_post_alloc_hook mm/slub.c:4948 [inline] slab_alloc_node mm/slub.c:5258 [inline] kmem_cache_alloc_noprof+0x367/0x6f0 mm/slub.c:5265 skb_clone+0x212/0x3a0 net/core/skbuff.c:2087 llc_rcv+0x699/0xd00 net/llc/llc_input.c:208 __netif_receive_skb_one_core net/core/dev.c:6137 [inline] __netif_receive_skb+0x164/0x380 net/core/dev.c:6250 process_backlog+0x622/0x1500 net/core/dev.c:6602 __napi_poll+0xae/0x320 net/core/dev.c:7666 napi_poll net/core/dev.c:7729 [inline] net_rx_action+0x672/0xe50 net/core/dev.c:7881 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:schedule_debug kernel/sched/core.c:5815 [inline] RIP: 0010:__schedule+0x19b/0x5000 kernel/sched/core.c:6740 Code: f6 48 8b 1b 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 6c 11 dd f6 48 81 3b 9d 6e ac 57 <0f> 85 5b 19 00 00 45 85 ed 7f 54 49 8d 5e 18 48 89 d8 48 c1 e8 03 RSP: 0018:ffffc90004c56fc0 EFLAGS: 00000246 RAX: 1ffff9200098a000 RBX: ffffc90004c50000 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: ffffffff8bbfc640 RDI: ffffffff8bbfc600 RBP: ffffc90004c571d0 R08: ffffffff8f805a77 R09: 1ffffffff1f00b4e R10: dffffc0000000000 R11: fffffbfff1f00b4f R12: ffff8881261b1000 R13: 0000000000000001 R14: ffff88807c045b80 R15: 1ffff11017127658 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7190 irqentry_exit+0x5d8/0x660 kernel/entry/common.c:216 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:688 RIP: 0010:put_cpu_partial+0x234/0x2d0 mm/slub.c:3960 Code: 41 5c 41 5d 41 5e 41 5f 5d e9 18 68 2f 09 cc 90 0f 0b 90 e9 e7 fe ff ff e8 19 80 2c 09 41 f7 c5 00 02 00 00 74 b2 fb 4d 85 ff <75> b1 eb ba e8 03 80 2c 09 e9 4f fe ff ff 90 0f 0b 90 e9 66 ff ff RSP: 0018:ffffc90004c57398 EFLAGS: 00000286 RAX: 90205b5c39896b00 RBX: ffff88801a027140 RCX: 90205b5c39896b00 RDX: 0000000000000007 RSI: ffffffff8d76bd39 RDI: ffffffff8bbfc660 RBP: 0000000000000001 R08: ffffffff8f805a77 R09: 1ffffffff1f00b4e R10: dffffc0000000000 R11: fffffbfff1f00b4f R12: 0000000000000001 R13: 0000000000000282 R14: ffff8880b893f050 R15: ffffea000137b000 __slab_free+0x288/0x2a0 mm/slub.c:5947 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:352 kasan_slab_alloc include/linux/kasan.h:252 [inline] slab_post_alloc_hook mm/slub.c:4948 [inline] slab_alloc_node mm/slub.c:5258 [inline] __do_kmalloc_node mm/slub.c:5651 [inline] __kvmalloc_node_noprof+0x573/0x910 mm/slub.c:7128 kvmalloc_array_node_noprof include/linux/slab.h:1122 [inline] compute_postorder+0x7f/0x970 kernel/bpf/verifier.c:18404 bpf_check+0x20d4/0x1c300 kernel/bpf/verifier.c:25231 bpf_prog_load+0x13ba/0x1a10 kernel/bpf/syscall.c:3088 __sys_bpf+0x507/0x860 kernel/bpf/syscall.c:6164 __do_sys_bpf kernel/bpf/syscall.c:6274 [inline] __se_sys_bpf kernel/bpf/syscall.c:6272 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6272 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: 0033:0x7f5270d8f749 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:00007f5271c63038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f5270fe5fa0 RCX: 00007f5270d8f749 RDX: 0000000000000048 RSI: 00002000000017c0 RDI: 0000000000000005 RBP: 00007f5270e13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f5270fe6038 R14: 00007f5270fe5fa0 R15: 00007fffb460de18