watchdog: BUG: soft lockup - CPU#0 stuck for 144s! [syz.0.30:6067] Modules linked in: irq event stamp: 13403713 hardirqs last enabled at (13403712): [] irqentry_exit+0x5dd/0x660 kernel/entry/common.c:219 hardirqs last disabled at (13403713): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1056 softirqs last enabled at (170994): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last enabled at (170994): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last enabled at (170994): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 softirqs last disabled at (170997): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (170997): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (170997): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 CPU: 0 UID: 0 PID: 6067 Comm: syz.0.30 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:ip6t_do_table+0x12e/0x1560 net/ipv6/netfilter/ip6_tables.c:267 Code: 20 01 00 00 48 85 c0 48 c7 c3 20 2a 7d 8c 48 0f 44 cb 48 89 4c 24 60 4d 8d 7e 10 4c 89 f8 48 c1 e8 03 48 89 84 24 b0 00 00 00 <42> 80 3c 28 00 74 08 4c 89 ff e8 93 a6 15 f8 4c 89 bc 24 b8 00 00 RSP: 0018:ffffc90000007680 EFLAGS: 00000a02 RAX: 1ffff92000000f32 RBX: ffffffff8c7d2a20 RCX: ffffffff8c7d2a20 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc900000077f0 RBP: ffffc90000007880 R08: ffffc900000077ef R09: 0000000000000000 R10: ffffc900000077d0 R11: fffff52000000efe R12: 0000000000000003 R13: dffffc0000000000 R14: ffffc90000007980 R15: ffffc90000007990 FS: 00007f326edb26c0(0000) GS:ffff8881260b0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055555e5975c8 CR3: 00000000321d8000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline] nf_hook_slow+0xc5/0x220 net/netfilter/core.c:623 nf_hook include/linux/netfilter.h:273 [inline] NF_HOOK include/linux/netfilter.h:316 [inline] ndisc_send_skb+0x13c5/0x1510 net/ipv6/ndisc.c:512 addrconf_rs_timer+0x369/0x670 net/ipv6/addrconf.c:4037 call_timer_fn+0x16e/0x590 kernel/time/timer.c:1748 expire_timers kernel/time/timer.c:1799 [inline] __run_timers kernel/time/timer.c:2373 [inline] __run_timer_base+0x61a/0x860 kernel/time/timer.c:2385 run_timer_base kernel/time/timer.c:2394 [inline] run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2404 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:__string_src include/trace/stages/stage5_get_offsets.h:-1 [inline] RIP: 0010:trace_event_get_offsets_lock_acquire include/trace/events/lock.h:24 [inline] RIP: 0010:do_perf_trace_lock_acquire include/trace/events/lock.h:24 [inline] RIP: 0010:perf_trace_lock_acquire+0xb6/0x410 include/trace/events/lock.h:24 Code: 00 00 00 00 00 48 89 74 24 30 48 8d 5e 18 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 b0 c6 89 00 48 8b 03 48 85 c0 <48> c7 c7 e0 1a 6b 8b 48 0f 45 f8 48 89 7c 24 28 e8 65 77 a7 09 49 RSP: 0018:ffffc90005116700 EFLAGS: 00000282 RAX: ffffffff8b6c1140 RBX: ffffffff8df41cd8 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8df41cc0 RDI: ffffffff8de0fe60 RBP: ffffc900051167f8 R08: 0000000000000002 R09: 0000000000000000 R10: ffffc900051169d8 R11: ffffffff81ad4ad0 R12: 1ffff92000a22ce8 R13: ffffffff8df41cc0 R14: ffffffff8de0fe60 R15: dffffc0000000000 __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 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] __do_kmalloc_node mm/slub.c:5652 [inline] __kmalloc_node_noprof+0x571/0x810 mm/slub.c:5658 kmalloc_array_node_noprof include/linux/slab.h:1075 [inline] alloc_slab_obj_exts+0x3e/0x100 mm/slub.c:2123 account_slab mm/slub.c:3202 [inline] allocate_slab+0x1cc/0x3b0 mm/slub.c:3267 new_slab mm/slub.c:3302 [inline] ___slab_alloc+0xf2b/0x1960 mm/slub.c:4651 __slab_alloc+0x65/0x100 mm/slub.c:4774 __slab_alloc_node mm/slub.c:4850 [inline] slab_alloc_node mm/slub.c:5246 [inline] __do_kmalloc_node mm/slub.c:5651 [inline] __kmalloc_node_track_caller_noprof+0x5cb/0x810 mm/slub.c:5759 __do_krealloc mm/slub.c:7007 [inline] krealloc_node_align_noprof+0x1ae/0x3a0 mm/slub.c:7066 copy_array+0x71/0x100 kernel/bpf/verifier.c:1391 copy_stack_state kernel/bpf/verifier.c:1451 [inline] copy_func_state kernel/bpf/verifier.c:1732 [inline] copy_verifier_state+0x997/0xf90 kernel/bpf/verifier.c:1778 push_stack+0x19d/0x3a0 kernel/bpf/verifier.c:2131 check_cond_jmp_op+0x1840/0x2e20 kernel/bpf/verifier.c:16995 do_check_insn kernel/bpf/verifier.c:20437 [inline] do_check+0x58f5/0xeba0 kernel/bpf/verifier.c:20577 do_check_common+0x19cc/0x25b0 kernel/bpf/verifier.c:23860 do_check_main kernel/bpf/verifier.c:23943 [inline] bpf_check+0x5e7a/0x1c300 kernel/bpf/verifier.c:25250 bpf_prog_load+0x13ba/0x1a10 kernel/bpf/syscall.c:3088 __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: 0033:0x7f326df8f749 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:00007f326edb2038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f326e1e5fa0 RCX: 00007f326df8f749 RDX: 0000000000000048 RSI: 00002000000017c0 RDI: 0000000000000005 RBP: 00007f326e013f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f326e1e6038 R14: 00007f326e1e5fa0 R15: 00007ffcfc2736f8 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 1307 Comm: aoe_tx0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:record_print_text+0xc7/0x420 kernel/printk/printk.c:1415 Code: 89 d6 e8 bc 15 86 00 4c 89 f2 48 8b 02 48 89 44 24 10 4c 8d 70 10 4c 89 f0 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 db 02 00 00 <45> 0f b7 3e 48 8d 7a 10 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0 RSP: 0018:ffffc9000446ed40 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000004 RCX: ffff88802755bd00 RDX: ffffc9000446efc0 RSI: 0000000000000000 RDI: ffffc9000446efc0 RBP: ffffc9000446ee70 R08: ffff88802755bd00 R09: 0000000000000003 R10: 00000000ffffffff R11: 0000000000000000 R12: ffffc9000446ef40 R13: dffffc0000000000 R14: ffffc9000446ef50 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8881261b0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055555654a5c8 CR3: 0000000026ad0000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: printk_get_next_message+0x26d/0x7b0 kernel/printk/printk.c:3018 console_emit_next_record kernel/printk/printk.c:3083 [inline] console_flush_one_record kernel/printk/printk.c:3215 [inline] console_flush_all+0x514/0xb60 kernel/printk/printk.c:3289 __console_flush_and_unlock kernel/printk/printk.c:3319 [inline] console_unlock+0xbb/0x190 kernel/printk/printk.c:3359 vprintk_emit+0x4f8/0x5f0 kernel/printk/printk.c:2426 dev_vprintk_emit+0x337/0x3f0 drivers/base/core.c:4914 dev_printk_emit+0xe0/0x130 drivers/base/core.c:4925 __netdev_printk+0x3e1/0x480 net/core/dev.c:12901 netdev_warn+0x10a/0x160 net/core/dev.c:12954 ieee802154_subif_start_xmit+0x136/0x190 net/mac802154/tx.c:232 __netdev_start_xmit include/linux/netdevice.h:5272 [inline] netdev_start_xmit include/linux/netdevice.h:5281 [inline] xmit_one net/core/dev.c:3853 [inline] dev_hard_start_xmit+0x2cd/0x800 net/core/dev.c:3869 sch_direct_xmit+0x241/0x4b0 net/sched/sch_generic.c:347 __dev_xmit_skb net/core/dev.c:4169 [inline] __dev_queue_xmit+0x136f/0x3140 net/core/dev.c:4783 dev_queue_xmit include/linux/netdevice.h:3381 [inline] tx+0x6b/0x190 drivers/block/aoe/aoenet.c:62 kthread+0x1d0/0x3e0 drivers/block/aoe/aoecmd.c:1241 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246