rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=15257, q=137 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294960572-4294950070), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g15257 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:25768 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x184c/0x4bd0 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0x147/0x320 kernel/sched/core.c:6848
 schedule_timeout+0x156/0x290 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x2db/0x1320 kernel/rcu/tree.c:2045
 rcu_gp_kthread+0xa3/0x3b0 kernel/rcu/tree.c:2247
 kthread+0x2ec/0x380 kernel/kthread.c:389
 ret_from_fork+0x47/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6550 Comm: syz.0.15 Not tainted 6.12.0-syzkaller-08756-g42d9e8b7ccdd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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+0x75/0x290 mm/kasan/generic.c:189
Code: 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 0f 85 c9 01 00 00 49 ff c3
RSP: 0018:ffffc90000a18b90 EFLAGS: 00000002
RAX: 0000000000000001 RBX: 1ffff92000143184 RCX: ffffffff8171815a
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90000a18c20
RBP: 0000000000000001 R08: ffffc90000a18c23 R09: 1ffff92000143184
R10: dffffc0000000000 R11: fffff52000143184 R12: ffff8880b872c880
R13: 1ffff92000143184 R14: dffffc0000000001 R15: fffff52000143185
FS:  00007f8576f756c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8576f54d58 CR3: 000000007af20000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
 atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1301 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:111 [inline]
 do_raw_spin_lock+0x14a/0x3a0 kernel/locking/spinlock_debug.c:116
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:120 [inline]
 _raw_spin_lock_irq+0xdb/0x120 kernel/locking/spinlock.c:170
 __run_hrtimer kernel/time/hrtimer.c:1743 [inline]
 __hrtimer_run_queues+0x66c/0xd30 kernel/time/hrtimer.c:1803
 hrtimer_interrupt+0x3ff/0xa30 kernel/time/hrtimer.c:1865
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x10c/0x400 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lockdep_unregister_key+0x567/0x600 kernel/locking/lockdep.c:6593
Code: a5 93 48 c7 c6 40 ba 70 81 e8 e5 c9 09 00 e8 30 de 09 00 e9 e5 fb ff ff e8 a6 3e eb 09 41 f7 c7 00 02 00 00 74 d0 fb 45 84 f6 <75> cf eb e0 0f 0b 45 31 f6 e9 64 ff ff ff 0f 0b e9 a5 fe ff ff 0f
RSP: 0018:ffffc900031ef0c0 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 1ffff9200063de20 RCX: ffffffff99bb4903
RDX: 0000000000000001 RSI: ffffffff8baadfa0 RDI: ffffffff8bfc0c20
RBP: ffffc900031ef188 R08: ffffffff93a5e52f R09: 1ffffffff274bca5
R10: dffffc0000000000 R11: fffffbfff274bca6 R12: ffffc900031ef100
R13: 1ffff9200063de1c R14: 0000000000000000 R15: 0000000000000202
 __qdisc_destroy+0x165/0x400 net/sched/sch_generic.c:1085
 taprio_attach+0x24a/0x390 net/sched/sch_taprio.c:2149
 qdisc_graft+0x1336/0x1660 net/sched/sch_api.c:1175
 tc_modify_qdisc+0xf41/0x1e30 net/sched/sch_api.c:1793
 rtnetlink_rcv_msg+0x73b/0xcf0 net/core/rtnetlink.c:6920
 netlink_rcv_skb+0x1df/0x430 net/netlink/af_netlink.c:2541
 netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline]
 netlink_unicast+0x7f2/0x990 net/netlink/af_netlink.c:1347
 netlink_sendmsg+0x8d9/0xcb0 net/netlink/af_netlink.c:1891
 sock_sendmsg_nosec net/socket.c:711 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:726
 ____sys_sendmsg+0x526/0x7d0 net/socket.c:2583
 ___sys_sendmsg net/socket.c:2637 [inline]
 __sys_sendmsg+0x265/0x350 net/socket.c:2669
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x7e/0x180 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f857617e819
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8576f75038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f8576335fa0 RCX: 00007f857617e819
RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
RBP: 00007f85761f175e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f8576335fa0 R15: 00007ffcbe09df78
 </TASK>