rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 1-...0: (1 GPs behind) idle=981/1/0x4000000000000000 softirq=33323/33326 fqs=5246 (detected by 0, t=10502 jiffies, g=45801, q=1012) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 10414 Comm: syz-executor.0 Not tainted 5.16.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__lock_acquire+0xcf1/0x5470 kernel/locking/lockdep.c:5030 Code: 03 38 d0 7c 08 84 d2 0f 85 ba 36 00 00 8b 35 12 52 37 0c 85 f6 0f 84 41 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 68 <48> c1 ea 03 80 3c 02 00 0f 85 80 36 00 00 48 8b 44 24 08 48 8b 14 RSP: 0018:ffffc90000dc0b88 EFLAGS: 00000002 RAX: dffffc0000000000 RBX: ffffffff8f4b0580 RCX: 0000000000006599 RDX: ffff88807e5d4450 RSI: 0000000000000001 RDI: ffffffff8f4b0598 RBP: b5c4ee40ac7a1114 R08: 0000000000000000 R09: ffffffff8ffb5bc7 R10: fffffbfff1ff6b78 R11: 0000000000000001 R12: ffff88807e5d4488 R13: ffff88807e5d3a00 R14: ffffffff8d93b368 R15: 0000000000000001 FS: 00007fe25fd44700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4e40467904 CR3: 000000001c62e000 CR4: 0000000000350ee0 Call Trace: lock_acquire kernel/locking/lockdep.c:5639 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5604 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:349 [inline] advance_sched+0x53/0x9a0 net/sched/sch_taprio.c:714 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x609/0xe50 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline] __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:194 Code: 74 24 10 e8 5a eb 0f f8 48 89 ef e8 12 61 10 f8 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 53 1b 03 f8 65 8b 05 3c a6 b5 76 85 c0 74 0a 5b 5d c3 e8 20 41 RSP: 0018:ffffc900049dfcb0 EFLAGS: 00000206 RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff1ff6c7e RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffff8880b9c2a600 R08: 0000000000000001 R09: ffffffff8ffb5a47 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000004 R13: 1bc16d1136a3bdff R14: 0000000000000000 R15: dffffc0000000000 clock_was_set+0x56d/0x790 kernel/time/hrtimer.c:970 do_settimeofday64 kernel/time/timekeeping.c:1326 [inline] do_settimeofday64+0x3b9/0x5b0 kernel/time/timekeeping.c:1293 do_sys_settimeofday64 kernel/time/time.c:195 [inline] do_sys_settimeofday64+0x1de/0x260 kernel/time/time.c:169 __do_sys_clock_settime kernel/time/posix-timers.c:1079 [inline] __se_sys_clock_settime kernel/time/posix-timers.c:1067 [inline] __x64_sys_clock_settime+0x1a1/0x280 kernel/time/posix-timers.c:1067 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fe2613cefe9 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe25fd44168 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3 RAX: ffffffffffffffda RBX: 00007fe2614e1f60 RCX: 00007fe2613cefe9 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000000 RBP: 00007fe26142908d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffeb7ab370f R14: 00007fe25fd44300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 03 38 add (%rax),%edi 2: d0 7c 08 84 sarb -0x7c(%rax,%rcx,1) 6: d2 0f rorb %cl,(%rdi) 8: 85 ba 36 00 00 8b test %edi,-0x74ffffca(%rdx) e: 35 12 52 37 0c xor $0xc375212,%eax 13: 85 f6 test %esi,%esi 15: 0f 84 41 01 00 00 je 0x15c 1b: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 22: fc ff df 25: 48 8b 54 24 68 mov 0x68(%rsp),%rdx * 2a: 48 c1 ea 03 shr $0x3,%rdx <-- trapping instruction 2e: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 32: 0f 85 80 36 00 00 jne 0x36b8 38: 48 8b 44 24 08 mov 0x8(%rsp),%rax 3d: 48 rex.W 3e: 8b .byte 0x8b 3f: 14 .byte 0x14