watchdog: BUG: soft lockup - CPU#0 stuck for 113s! [syz.1.535:9363] Modules linked in: irq event stamp: 15593627 hardirqs last enabled at (15593626): [] irqentry_exit+0x59e/0x620 kernel/entry/common.c:242 hardirqs last disabled at (15593627): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1056 softirqs last enabled at (15413022): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last enabled at (15413022): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last enabled at (15413022): [] __irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723 softirqs last disabled at (15413025): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (15413025): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (15413025): [] __irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723 CPU: 0 UID: 0 PID: 9363 Comm: syz.1.535 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:unwind_get_return_address+0x0/0x90 arch/x86/kernel/unwind_orc.c:381 Code: f7 49 89 f7 e8 21 7a b9 00 4c 89 f7 4c 89 fe e9 29 ff ff ff e8 81 75 37 0a 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 41 57 41 56 53 48 89 fb 49 be 00 00 00 00 00 fc ff df RSP: 0000:ffffc90000007940 EFLAGS: 00000202 RAX: 00000000914dd801 RBX: ffffc90000007a00 RCX: 0000000000000101 RDX: 0000000000000002 RSI: ffffffff8def4bd1 RDI: ffffc90000007948 RBP: ffffc900000079d0 R08: ffffffff90118db7 R09: 1ffffffff20231b6 R10: dffffc0000000000 R11: fffffbfff20231b7 R12: ffff88807cd45b80 R13: 0000000000000000 R14: ffffffff81b0bfa0 R15: ffffc90000007948 FS: 00007fb8343d66c0(0000) GS:ffff888125463000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f356719e7d0 CR3: 000000002a96a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: arch_stack_walk+0xfb/0x150 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:57 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:78 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:584 poison_slab_object mm/kasan/common.c:253 [inline] __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285 kasan_slab_free include/linux/kasan.h:235 [inline] slab_free_hook mm/slub.c:2692 [inline] slab_free mm/slub.c:6168 [inline] kmem_cache_free+0x187/0x630 mm/slub.c:6298 pagetable_dtor include/linux/mm.h:3534 [inline] pagetable_dtor_free include/linux/mm.h:3541 [inline] __tlb_remove_table+0x68/0x290 include/asm-generic/tlb.h:221 __tlb_remove_table_free mm/mmu_gather.c:228 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0x5f/0x150 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+0x0/0x52d0 kernel/sched/core.c:6762 Code: 81 f6 45 89 f8 89 d9 48 8b 5c 24 08 e9 ee fe ff ff cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 RSP: 0000:ffffc90004d87948 EFLAGS: 00000202 RAX: 0000000000d12d9b RBX: ffff88807cd45b80 RCX: 0000000000000001 RDX: 0000000000000006 RSI: ffffffff8def4bd1 RDI: 0000000000000001 RBP: 0000000000000000 R08: ffffffff90118db7 R09: 1ffffffff20231b6 R10: dffffc0000000000 R11: fffffbfff20231b7 R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7235 irqentry_exit+0x599/0x620 kernel/entry/common.c:239 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:perf_trace_init+0xa2/0x2d0 kernel/trace/trace_event_perf.c:223 Code: e0 e8 7c 8e 0f 84 75 01 00 00 4c 89 24 24 4c 8d 63 30 4c 89 e0 48 c1 e8 03 42 0f b6 04 30 84 c0 0f 85 17 01 00 00 4d 63 24 24 <4c> 89 ff 4c 89 e6 e8 83 2a f6 ff 4d 39 e7 0f 85 a9 00 00 00 4c 8d RSP: 0018:ffffc90004d87a78 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffffff8fe4f240 RCX: 0000000000080000 RDX: ffffc9000e670000 RSI: 0000000000002cee RDI: 0000000000002cef RBP: 0000000000000002 R08: ffffffff90118db7 R09: 1ffffffff20231b6 R10: dffffc0000000000 R11: fffffbfff20231b7 R12: 0000000000000f93 R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000149 perf_tp_event_init+0x8d/0x120 kernel/events/core.c:11273 perf_try_init_event+0x17f/0x870 kernel/events/core.c:13032 perf_init_event kernel/events/core.c:13130 [inline] perf_event_alloc+0x1444/0x2e30 kernel/events/core.c:13405 __do_sys_perf_event_open kernel/events/core.c:13927 [inline] __se_sys_perf_event_open+0x7a9/0x1d60 kernel/events/core.c:13808 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb83359c799 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb8343d6028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007fb833816090 RCX: 00007fb83359c799 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000180 RBP: 00007fb833632c99 R08: 000000000000000b R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007fb833816128 R14: 00007fb833816090 R15: 00007fff86bfe338 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 1299 Comm: aoe_tx0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:number+0x2e9/0xf80 lib/vsprintf.c:509 Code: 00 00 0f b6 03 0a 44 24 28 88 84 24 80 00 00 00 b8 01 00 00 00 e9 43 01 00 00 41 0f b6 df bf 0a 00 00 00 89 de e8 b7 ae 1b f6 <83> fb 0a 75 24 e8 6d aa 1b f6 48 8d 9c 24 80 00 00 00 48 89 df 4c RSP: 0018:ffffc90005076b20 EFLAGS: 00000293 RAX: ffffffff8ba9f339 RBX: 000000000000000a RCX: 0000000000000000 RDX: ffff888028823d00 RSI: 000000000000000a RDI: 000000000000000a RBP: ffffc90005076c40 R08: ffffc90005076bb7 R09: 0000000000000000 R10: ffffc90005076ba0 R11: fffff52000a0ed77 R12: 00000000000001fc R13: 00000000000001fc R14: ffffc90005076f21 R15: 0000000005ffff0a FS: 0000000000000000(0000) GS:ffff888125563000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f30e704afe8 CR3: 000000003544c000 CR4: 00000000003526f0 Call Trace: vsnprintf+0x8e5/0xee0 lib/vsprintf.c:2912 sprintf+0xe7/0x140 lib/vsprintf.c:3111 print_time kernel/printk/printk.c:1359 [inline] info_print_prefix+0x16b/0x360 kernel/printk/printk.c:1385 record_print_text+0x176/0x450 kernel/printk/printk.c:1434 printk_get_next_message+0x29c/0x880 kernel/printk/printk.c:3072 console_emit_next_record kernel/printk/printk.c:3137 [inline] console_flush_one_record kernel/printk/printk.c:3269 [inline] console_flush_all+0x501/0xb20 kernel/printk/printk.c:3343 __console_flush_and_unlock kernel/printk/printk.c:3373 [inline] console_unlock+0xd1/0x1c0 kernel/printk/printk.c:3413 vprintk_emit+0x485/0x560 kernel/printk/printk.c:2479 dev_vprintk_emit+0x355/0x420 drivers/base/core.c:4913 dev_printk_emit+0xee/0x140 drivers/base/core.c:4924 __netdev_printk+0x3e1/0x480 net/core/dev.c:12934 netdev_warn+0x11e/0x180 net/core/dev.c:12987 ieee802154_subif_start_xmit+0x136/0x190 net/mac802154/tx.c:232 __netdev_start_xmit include/linux/netdevice.h:5292 [inline] netdev_start_xmit include/linux/netdevice.h:5301 [inline] xmit_one net/core/dev.c:3871 [inline] dev_hard_start_xmit+0x2d8/0x870 net/core/dev.c:3887 sch_direct_xmit+0x251/0x4c0 net/sched/sch_generic.c:347 __dev_xmit_skb net/core/dev.c:4186 [inline] __dev_queue_xmit+0x1550/0x3890 net/core/dev.c:4802 dev_queue_xmit include/linux/netdevice.h:3384 [inline] tx+0x6b/0x190 drivers/block/aoe/aoenet.c:62 kthread+0x1e0/0x3f0 drivers/block/aoe/aoecmd.c:1241 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245