rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-...D } 2634 jiffies s: 545 root: 0x1/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5074 Comm: syz-executor458 Not tainted 6.8.0-rc3-syzkaller-00862-g0f37666d87d2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:86 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0x70/0x290 mm/kasan/generic.c:189 Code: ff df 4e 8d 1c 13 49 ff c8 4d 89 c1 49 c1 e9 03 49 be 01 00 00 00 00 fc ff df 4f 8d 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 <48> 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd 41 80 3b 00 RSP: 0018:ffffc90000007778 EFLAGS: 00000083 RAX: 0000000000000001 RBX: 1ffffffff2592484 RCX: ffffffff8171840a RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff92c92420 RBP: 0000000000000001 R08: ffffffff92c92427 R09: 1ffffffff2592484 R10: dffffc0000000000 R11: fffffbfff2592484 R12: 0000000000000001 R13: dffffc0000000000 R14: dffffc0000000001 R15: fffffbfff2592485 FS: 0000555556030380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1adf8173b0 CR3: 000000001cf78000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: instrument_atomic_read include/linux/instrumented.h:68 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] hlock_class kernel/locking/lockdep.c:228 [inline] mark_lock+0x9a/0x350 kernel/locking/lockdep.c:4656 mark_usage kernel/locking/lockdep.c:4599 [inline] __lock_acquire+0xc09/0x1fd0 kernel/locking/lockdep.c:5091 lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 debug_objects_fill_pool+0x9f/0x9b0 lib/debugobjects.c:614 debug_object_activate+0x135/0x510 lib/debugobjects.c:704 debug_hrtimer_activate kernel/time/hrtimer.c:422 [inline] debug_activate kernel/time/hrtimer.c:477 [inline] enqueue_hrtimer+0x30/0x320 kernel/time/hrtimer.c:1087 __run_hrtimer kernel/time/hrtimer.c:1705 [inline] __hrtimer_run_queues+0x6b4/0xd00 kernel/time/hrtimer.c:1752 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1814 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline] __sysvec_apic_timer_interrupt+0x107/0x3a0 arch/x86/kernel/apic/apic.c:1082 sysvec_apic_timer_interrupt+0x92/0xb0 arch/x86/kernel/apic/apic.c:1076 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194 Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 1e 8f 83 f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 c3 fa f1 f5 65 8b 05 34 71 91 74 85 c0 74 43 48 c7 04 24 0e 36 RSP: 0018:ffffc90003b3eb40 EFLAGS: 00000206 RAX: 633745a029aa1400 RBX: 1ffff92000767d6c RCX: ffffffff8171840a RDX: dffffc0000000000 RSI: ffffffff8baab5e0 RDI: 0000000000000001 RBP: ffffc90003b3ebd0 R08: ffffffff92c924e7 R09: 1ffffffff259249c R10: dffffc0000000000 R11: fffffbfff259249d R12: dffffc0000000000 R13: 1ffff92000767d68 R14: ffffc90003b3eb60 R15: 0000000000000246 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] taprio_change+0x339b/0x42d0 net/sched/sch_taprio.c:1973 taprio_init+0x9da/0xc80 net/sched/sch_taprio.c:2114 qdisc_create+0x9d4/0x1190 net/sched/sch_api.c:1355 tc_modify_qdisc+0xa26/0x1e40 net/sched/sch_api.c:1776 rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6606 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367 netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f1adf7c9de9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd229d3658 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f1adf7c9de9 RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 00000000000f4240 R08: 0000000000000000 R09: 0000000100000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd229d36b0 R13: 0000000000000001 R14: 00007ffd229d36b0 R15: 0000000000000003 INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.422 msecs