RBP: 00007f1237ef2fa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f1237ef3038 R14: 00007fff27cbd450 R15: 00007fff27cbd538 watchdog: BUG: soft lockup - CPU#0 stuck for 287s! [syz.4.447:2294] Modules linked in: CPU: 0 PID: 2294 Comm: syz.4.447 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:ffs arch/x86/include/asm/bitops.h:297 [inline] RIP: 0010:handle_softirqs+0x10d/0x560 kernel/softirq.c:571 Code: 08 85 e8 a6 c5 6f 03 65 66 c7 05 9c 40 c4 7e 00 00 48 c7 c7 60 2c 08 85 e8 90 c5 6f 03 65 44 89 35 a0 42 c3 7e fb 44 89 75 a4 ff ff ff ff 0f bc 45 a4 41 89 c5 41 ff c5 0f 85 c0 00 00 00 48 RSP: 0018:ffffc90000007f38 EFLAGS: 00000282 RAX: 0000000000000000 RBX: ffff88813f020002 RCX: bee8ec85346e6900 RDX: 1ffffffff0e18a00 RSI: ffffffff85082c60 RDI: ffffffff85638d80 RBP: ffffc90000007fc0 R08: ffffffff870c5008 R09: ffffffff870c5018 R10: ffffffff870c5003 R11: 1ffffffff0e18a00 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000002 R15: 000000000000000a FS: 00007f12366c46c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000100000000 CR3: 000000014160a000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __do_softirq kernel/softirq.c:621 [inline] invoke_softirq kernel/softirq.c:443 [inline] __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:670 irq_exit_rcu+0x9/0x10 kernel/softirq.c:682 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:preempt_schedule_irq+0xa5/0x120 kernel/sched/core.c:6942 Code: 44 24 20 00 02 00 00 43 c6 44 37 04 f8 74 0b 0f 0b 48 f7 03 08 00 00 00 74 4d bf 01 00 00 00 e8 21 8d 94 fc fb bf 01 00 00 00 76 e4 ff ff fa bf 01 00 00 00 e8 bb 8e 94 fc 65 48 8b 1d 13 37 RSP: 0018:ffffc90008e575a0 EFLAGS: 00000246 RAX: 1ffff11027e048be RBX: ffffc90008e57668 RCX: ffffffff870ccf00 RDX: 1ffffffff0e18a00 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffffc90008e57618 R08: ffffffff870c5008 R09: ffffffff870c5018 R10: ffffffff870c5003 R11: 1ffffffff0e18a00 R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920011caeb4 irqentry_exit_cond_resched+0x29/0x30 kernel/entry/common.c:398 irqentry_exit+0x37/0x40 kernel/entry/common.c:432 sysvec_apic_timer_interrupt+0x64/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:__sanitizer_cov_trace_pc+0x1/0x60 kernel/kcov.c:199 Code: 00 00 0f 0b 0f 1f 44 00 00 55 48 89 e5 53 48 89 fb e8 13 00 00 00 48 8b 3d 2c 94 7f 05 48 89 de e8 b4 bd 3e 00 5b 5d c3 00 55 <48> 89 e5 48 8b 45 08 65 48 8b 0d d0 a5 98 7e 65 8b 15 d1 a5 98 7e RSP: 0018:ffffc90008e57710 EFLAGS: 00000283 RAX: ffff8881085f5a88 RBX: ffffc90008e57908 RCX: 0000000000000000 RDX: ffffc90003f55000 RSI: 0000000000000095 RDI: 0000000000000000 RBP: ffffc90008e577f0 R08: ffff88813f023b5b R09: 1ffff11027e0476b R10: dffffc0000000000 R11: ffffed1027e0476c R12: 1ffff920011caeec R13: 1ffff920011caf21 R14: ffff88813f023b40 R15: dffffc0000000000 futex_wait+0x258/0x8f0 kernel/futex/core.c:2978 do_futex+0xdb1/0x2800 kernel/futex/core.c:4031 __do_sys_futex kernel/futex/core.c:4108 [inline] __se_sys_futex+0x135/0x330 kernel/futex/core.c:4089 __x64_sys_futex+0xe5/0x100 kernel/futex/core.c:4089 x64_sys_call+0x251/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:203 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f1237c6b159 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:00007f12366c40e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00007f1237ef2fa8 RCX: 00007f1237c6b159 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f1237ef2fa8 RBP: 00007f1237ef2fa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f1237ef3038 R14: 00007fff27cbd450 R15: 00007fff27cbd538 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline] NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline] NMI backtrace for cpu 1 skipped: idling at default_idle+0xf/0x20 arch/x86/kernel/process.c:729