RBP: 0000000000000000 R08: 000000000000003d R09: 000000000000003d
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
watchdog: BUG: soft lockup - CPU#0 stuck for 246s! [syz-executor389:307]
Modules linked in:
CPU: 0 PID: 307 Comm: syz-executor389 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 <b8> 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: ffff888120f50280 RCX: 2bd5441925afa800
RDX: 1ffffffff0e18a00 RSI: ffffffff85082c60 RDI: ffffffff85638d80
RBP: ffffc90000007fc0 R08: ffffffff870c5008 R09: ffffffff870c5018
R10: ffffffff870c5003 R11: 1ffffffff0e18a00 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000280 R15: 000000000000000a
FS:  000055558dd633c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000012596c000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:_perf_ioctl kernel/events/core.c:5827 [inline]
RIP: 0010:perf_ioctl+0x1500/0x1e50 kernel/events/core.c:5886
Code: 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 40 02 00 00 0f 85 91 08 00 00 4c 89 f8 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 <e8> bb 0e dc ff 45 31 ff e9 6e ff ff ff e8 ae 0e dc ff 41 bf ea ff
RSP: 0018:ffffc90000797be0 EFLAGS: 00010246
RAX: ffffffff818dac5c RBX: 0000000000000000 RCX: ffff888120f58000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000797e80 R08: ffff888120e43807 R09: 1ffff110241c8700
R10: dffffc0000000000 R11: ffffed10241c8701 R12: 0000000040042408
R13: dffffc0000000000 R14: fffff520000f2f8c R15: ffffc900000ab000
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0x121/0x1a0 fs/ioctl.c:860
 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:860
 x64_sys_call+0x2f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
 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: 0033:0x7fd9ff69c489
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 d8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffeb6947348 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fd9ff69c489
RDX: 0000000000000025 RSI: 0000000040042408 RDI: 0000000000000024
RBP: 0000000000000000 R08: 000000000000003d R09: 000000000000003d
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
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