rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 1-...0: (1 GPs behind) idle=5cb/1/0x4000000000000000 softirq=10036/10037 fqs=5250 (detected by 0, t=10502 jiffies, g=12421, q=1188) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5190 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:__kasan_check_write+0x6/0x10 mm/kasan/shadow.c:37 Code: 31 a1 a2 8b 48 89 de e8 c8 38 db 07 31 ed eb d7 00 00 cc cc 89 f6 48 8b 0c 24 31 d2 e9 43 ef ff ff 0f 1f 00 89 f6 48 8b 0c 24 01 00 00 00 e9 30 ef ff ff 55 41 56 53 48 89 d3 89 f5 49 89 fe RSP: 0018:ffffc90000dd0bb8 EFLAGS: 00000056 RAX: 00000000ffffff01 RBX: ffff88805ba112e8 RCX: ffffffff815d4d6d RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90000dd0c00 RBP: ffffc90000dd0c70 R08: dffffc0000000000 R09: ffffed100b74225e R10: ffffed100b74225e R11: 1ffff1100b74225d R12: ffff88805ba112f8 R13: ffff88805ba112f0 R14: 1ffff1100b74225f R15: 1ffff1100b74225e FS: 000055558b394500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4c76eb2ca0 CR3: 000000005b384000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: instrument_atomic_read_write include/linux/instrumented.h:101 [inline] atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:512 [inline] queued_spin_lock include/asm-generic/qspinlock.h:82 [inline] do_raw_spin_lock+0x11d/0x280 kernel/locking/spinlock_debug.c:115 spin_lock include/linux/spinlock.h:364 [inline] advance_sched+0x47/0x940 net/sched/sch_taprio.c:716 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x53d/0xc40 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x3bb/0x8d0 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline] __sysvec_apic_timer_interrupt+0x137/0x4a0 arch/x86/kernel/apic/apic.c:1114 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:__unwind_start+0x5c5/0x740 arch/x86/kernel/unwind_orc.c:-1 Code: 08 4c 89 e7 e8 bc 97 87 00 48 8b 44 24 10 49 39 04 24 0f 87 14 fb ff ff 48 89 df e8 95 db ff ff 48 be 00 00 00 00 00 fc ff df <48> 8b 04 24 0f b6 04 30 84 c0 75 0e 83 3b 00 0f 85 4a ff ff ff e9 RSP: 0018:ffffc900039ffa88 EFLAGS: 00000296 RAX: 0000000080000001 RBX: ffffc900039ffae8 RCX: 0000000080000000 RDX: ffffc900039ffb01 RSI: dffffc0000000000 RDI: 00000000ffffffff RBP: 1ffff9200073ff5e R08: dffffc0000000000 R09: ffffc900039ffb38 R10: fffff5200073ff69 R11: 1ffff9200073ff67 R12: ffffc900039ffb20 R13: ffffc900039ffaf8 R14: 1ffff9200073ff5f R15: ffffc900039ffaf0 unwind_start arch/x86/include/asm/unwind.h:60 [inline] arch_stack_walk+0xda/0x140 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122 kasan_save_stack+0x35/0x60 mm/kasan/common.c:38 kasan_record_aux_stack+0xb8/0x100 mm/kasan/generic.c:348 task_work_add+0x2f/0x1d0 kernel/task_work.c:38 fput_many+0xde/0x1a0 fs/file_table.c:367 filp_close+0x10e/0x150 fs/open.c:1371 __do_sys_close fs/open.c:1384 [inline] __se_sys_close fs/open.c:1382 [inline] __x64_sys_close+0x34/0x70 fs/open.c:1382 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: 0033:0x7f4c76ed8dca Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 43 91 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 a3 91 02 00 8b 44 24 RSP: 002b:00007ffd705c7ed0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f4c76ed8dca RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007f4c76f5cadc R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000004 R13: 00007ffd705c7f10 R14: 000000000001d04f R15: 00007ffd705c8480