watchdog: BUG: soft lockup - CPU#0 stuck for 122s! [syz.2.106:6300] Modules linked in: irq event stamp: 13173451 hardirqs last enabled at (13173450): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:214 hardirqs last disabled at (13173451): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1052 softirqs last enabled at (11607792): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last enabled at (11607792): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last enabled at (11607792): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 softirqs last disabled at (11607795): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (11607795): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (11607795): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 CPU: 0 UID: 0 PID: 6300 Comm: syz.2.106 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:unwind_next_frame+0x127/0x2390 arch/x86/kernel/unwind_orc.c:482 Code: 48 c7 c2 e0 70 68 8b e8 17 f3 29 00 4c 89 6c 24 70 48 89 5c 24 68 4d 8d 6e 50 4c 89 e8 48 c1 e8 03 48 89 44 24 38 80 3c 28 00 <74> 08 4c 89 ef e8 1f 8d b2 00 49 8b 5d 00 48 85 db 74 23 48 81 c3 RSP: 0018:ffffc90000007378 EFLAGS: 00000246 RAX: 1ffff92000000e93 RBX: ffffffff81c00706 RCX: 334267195a8a1200 RDX: 0000000000000000 RSI: ffffffff8bbf0e40 RDI: ffffffff8bbf0e00 RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff81738c45 R10: ffffc90000006f48 R11: fffff52000000deb R12: 1ffff92000000e89 R13: ffffc90000007498 R14: ffffc90000007448 R15: ffffffff81738c45 FS: 00007f9af0c536c0(0000) GS:ffff888126138000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9af0c31f98 CR3: 000000007bc18000 CR4: 00000000003526f0 Call Trace: 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 poison_kmalloc_redzone mm/kasan/common.c:400 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:417 kasan_kmalloc include/linux/kasan.h:262 [inline] __kmalloc_cache_noprof+0x3d5/0x6f0 mm/slub.c:5771 kmalloc_noprof include/linux/slab.h:957 [inline] dst_cow_metrics_generic+0x56/0x1c0 net/core/dst.c:193 dst_metrics_write_ptr include/net/dst.h:136 [inline] dst_metric_set include/net/dst.h:197 [inline] icmp6_dst_alloc+0x264/0x420 net/ipv6/route.c:3335 ndisc_send_skb+0x3f1/0x1510 net/ipv6/ndisc.c:491 addrconf_rs_timer+0x369/0x670 net/ipv6/addrconf.c:4037 call_timer_fn+0x17e/0x5f0 kernel/time/timer.c:1747 expire_timers kernel/time/timer.c:1798 [inline] __run_timers kernel/time/timer.c:2372 [inline] __run_timer_base+0x61a/0x860 kernel/time/timer.c:2384 run_timer_base kernel/time/timer.c:2393 [inline] run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2403 handle_softirqs+0x286/0x870 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:1052 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1052 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:__sanitizer_cov_trace_pc+0x46/0x70 kernel/kcov.c:222 Code: ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 7c 16 00 00 00 74 2c 8b 91 58 16 00 00 83 fa 02 75 21 48 8b 91 60 16 00 00 48 8b 32 <48> 8d 7e 01 8b 89 5c 16 00 00 48 39 cf 73 08 48 89 3a 48 89 44 f2 RSP: 0018:ffffc9000b726898 EFLAGS: 00000246 RAX: ffffffff81f1348b RBX: 1ffff920016e4d1c RCX: ffff888025359e40 RDX: ffffc9000dcc2000 RSI: 0000000000000e2e RDI: ffff8880581df6c0 RBP: ffffc9000b726970 R08: ffffc9000b726a17 R09: 0000000000000000 R10: ffffc9000b726a08 R11: fffff520016e4d43 R12: 0000000000000001 R13: dffffc0000000000 R14: ffff8880b8832970 R15: ffff8880581df6c0 perf_swevent_event+0x7b/0x5e0 kernel/events/core.c:10482 perf_tp_event+0x4f6/0x1380 kernel/events/core.c:11012 perf_trace_run_bpf_submit+0xee/0x170 kernel/events/core.c:10936 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: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+0x3e/0x60 mm/kasan/common.c:56 kasan_record_aux_stack+0xbd/0xd0 mm/kasan/generic.c:559 __call_rcu_common kernel/rcu/tree.c:3123 [inline] call_rcu+0x157/0x9c0 kernel/rcu/tree.c:3243 context_switch kernel/sched/core.c:5328 [inline] __schedule+0x17a0/0x4cc0 kernel/sched/core.c:6929 preempt_schedule_notrace+0xd1/0x110 kernel/sched/core.c:7206 preempt_schedule_notrace_thunk+0x16/0x30 arch/x86/entry/thunk.S:13 class_preempt_notrace_destructor include/linux/preempt.h:471 [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:5831 rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:867 [inline] is_bpf_text_address+0x47/0x2b0 kernel/bpf/core.c:744 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:56 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:77 poison_kmalloc_redzone mm/kasan/common.c:400 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:417 kasan_kmalloc include/linux/kasan.h:262 [inline] __kmalloc_cache_noprof+0x3d5/0x6f0 mm/slub.c:5771 kmalloc_noprof include/linux/slab.h:957 [inline] kzalloc_noprof include/linux/slab.h:1094 [inline] ref_tracker_alloc+0x133/0x460 lib/ref_tracker.c:271 __netns_tracker_alloc include/net/net_namespace.h:362 [inline] netns_tracker_alloc include/net/net_namespace.h:371 [inline] get_net_track include/net/net_namespace.h:388 [inline] sk_alloc+0x1b1/0x370 net/core/sock.c:2307 smc_sock_alloc net/smc/af_smc.c:414 [inline] __smc_create+0xed/0x280 net/smc/af_smc.c:3379 __sock_create+0x4b3/0x9f0 net/socket.c:1605 sock_create net/socket.c:1663 [inline] __sys_socket_create net/socket.c:1700 [inline] __sys_socket+0xd7/0x1b0 net/socket.c:1747 __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/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f9aefd8f749 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:00007f9af0c53038 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007f9aeffe6090 RCX: 00007f9aefd8f749 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 000000000000002b RBP: 00007f9aefe13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f9aeffe6128 R14: 00007f9aeffe6090 R15: 00007ffe34fb7918 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 6295 Comm: syz.1.105 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:clockevents_program_event+0x94/0x360 kernel/time/clockevents.c:-1 Code: 0f 85 3f 02 00 00 44 8b 65 00 4c 89 e7 48 c7 c6 00 93 f6 8d e8 dd f2 0e 00 49 83 fc 01 74 0d 41 83 fc 03 75 14 e8 4c ed 0e 00 1f e8 45 ed 0e 00 45 31 f6 e9 b7 01 00 00 80 3d b5 e0 b5 0d 01 RSP: 0018:ffffc90000a088a8 EFLAGS: 00000006 RAX: ffffffff81b11974 RBX: ffff8880b8923900 RCX: ffff888024483c80 RDX: 0000000000010100 RSI: ffffffff8df69300 RDI: 0000000000000003 RBP: ffff8880b8923938 R08: ffff888024483c80 R09: 0000000000000002 R10: 0000000000000003 R11: 0000000000010100 R12: 0000000000000003 R13: dffffc0000000000 R14: 0000003940559467 R15: 1ffff11017124727 FS: 00007ff02ac576c0(0000) GS:ffff888126238000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005627dfc99168 CR3: 0000000077d8a000 CR4: 00000000003526f0 Call Trace: hrtimer_interrupt+0x620/0xaa0 kernel/time/hrtimer.c:1916 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1041 [inline] __sysvec_apic_timer_interrupt+0x10b/0x410 arch/x86/kernel/apic/apic.c:1058 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1052 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:lock_acquire+0x175/0x360 kernel/locking/lockdep.c:5872 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 2b 2a d1 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:ffffc90000a08b00 EFLAGS: 00000206 RAX: 5d3f5d90d6c98500 RBX: 0000000000000000 RCX: 5d3f5d90d6c98500 RDX: 0000000000000000 RSI: ffffffff8d8f5dca RDI: ffffffff8bbf0e60 RBP: ffffffff81ad5c8e R08: 0000000000000000 R09: ffffffff81ad5c8e R10: ffffc90000a08be8 R11: fffff5200014117f R12: 0000000000000000 R13: ffffc90000a08be0 R14: 0000000000000001 R15: 0000000000000246 call_timer_fn+0xdb/0x5f0 kernel/time/timer.c:1744 expire_timers kernel/time/timer.c:1798 [inline] __run_timers kernel/time/timer.c:2372 [inline] __run_timer_base+0x61a/0x860 kernel/time/timer.c:2384 run_timer_base kernel/time/timer.c:2393 [inline] run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2403 handle_softirqs+0x286/0x870 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:1052 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1052 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:32 [inline] RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:109 [inline] RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:127 [inline] RIP: 0010:lock_is_held_type+0x68/0x190 kernel/locking/lockdep.c:5936 Code: 00 00 65 4c 8b 2c 25 08 80 6e 92 41 83 bd 2c 0b 00 00 00 0f 85 d8 00 00 00 89 f5 49 89 fe 48 c7 04 24 00 00 00 00 9c 8f 04 24 <4c> 8b 24 24 fa 48 c7 c7 0b 34 72 8d e8 07 17 00 00 65 ff 05 10 db RSP: 0018:ffffc9000b5e6b78 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 00000000ffffffff RCX: ffff888024483c80 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff8df3d7a0 RBP: 00000000ffffffff R08: ffffffff8f7cee77 R09: 1ffffffff1ef9dce R10: dffffc0000000000 R11: fffffbfff1ef9dcf R12: ffff888126238000 R13: ffff888024483c80 R14: ffffffff8df3d7a0 R15: 1ffff11017127558 lock_is_held include/linux/lockdep.h:249 [inline] schedule_debug kernel/sched/core.c:5905 [inline] __schedule+0x290/0x4cc0 kernel/sched/core.c:6806 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7256 irqentry_exit+0x6f/0x90 kernel/entry/common.c:211 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:should_fail_ex+0x5/0x560 lib/fault-inject.c:125 Code: 8e 4c 89 f2 31 c9 e8 8a 8f c9 ff e9 75 fe ff ff 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 55 <41> 57 41 56 41 55 41 54 53 48 83 ec 18 89 14 24 49 89 f6 48 89 fb RSP: 0018:ffffc9000b5e6f40 EFLAGS: 00000287 RAX: 0000000000000001 RBX: ffffc9000b5e7000 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffffffff8e060a00 RBP: 0000000000000000 R08: ffffc9000b5e6b97 R09: 0000000000000000 R10: ffffc9000b5e6b88 R11: fffff520016bcd73 R12: 1ffff920016bcdfb R13: 0000000000002cc2 R14: 0000000000000000 R15: 1ffff920016bce00 prepare_alloc_pages+0x213/0x610 mm/page_alloc.c:4958 __alloc_frozen_pages_noprof+0x123/0x370 mm/page_alloc.c:5172 __alloc_pages_noprof mm/page_alloc.c:5217 [inline] alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137 alloc_pages_bulk_mempolicy_noprof+0x341/0x1650 mm/mempolicy.c:2724 vm_area_alloc_pages mm/vmalloc.c:3622 [inline] __vmalloc_area_node mm/vmalloc.c:3724 [inline] __vmalloc_node_range_noprof+0x745/0x12d0 mm/vmalloc.c:3897 __vmalloc_node_noprof mm/vmalloc.c:3960 [inline] vmalloc_noprof+0xb2/0xf0 mm/vmalloc.c:3993 bpf_prog_calc_tag+0x4c/0x370 kernel/bpf/core.c:304 resolve_pseudo_ldimm64+0xbc/0xc60 kernel/bpf/verifier.c:21048 bpf_check+0x1cf7/0x1c3b0 kernel/bpf/verifier.c:25209 bpf_prog_load+0x13ba/0x1a10 kernel/bpf/syscall.c:3098 __sys_bpf+0x507/0x860 kernel/bpf/syscall.c:6174 __do_sys_bpf kernel/bpf/syscall.c:6284 [inline] __se_sys_bpf kernel/bpf/syscall.c:6282 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6282 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff029d8f749 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:00007ff02ac57038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007ff029fe5fa0 RCX: 00007ff029d8f749 RDX: 0000000000000094 RSI: 00002000000001c0 RDI: 0000000000000005 RBP: 00007ff029e13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ff029fe6038 R14: 00007ff029fe5fa0 R15: 00007ffec0f71a88