rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...0: (350 ticks this GP) idle=825/1/0x4000000000000000 softirq=23566/23568 fqs=5247 
	(detected by 1, t=10502 jiffies, g=34093, q=1491)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 8491 Comm: syz.7.925 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:kasan_check_range+0x1b2/0x290 mm/kasan/generic.c:-1
Code: 01 f3 49 89 df 49 8d 5f 07 4d 85 ff 49 0f 49 df 48 83 e3 f8 49 29 df 74 0e 41 80 3b 00 75 69 49 ff c3 49 ff cf 75 f2 5b 41 5c <41> 5e 41 5f 5d c3 45 84 ff 0f 85 91 00 00 00 41 f7 c7 00 ff 00 00
RSP: 0018:ffffc900000078c0 EFLAGS: 00000056
RAX: 0000000000000001 RBX: 0000000000000015 RCX: ffffffff815d2a38
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff901d60c0
RBP: ffffc90000007b30 R08: ffffffff901d60c7 R09: 1ffffffff203ac18
R10: dffffc0000000000 R11: fffffbfff203ac19 R12: 000000009be2421a
R13: ffff88802ad83b80 R14: 1ffffffff203ac18 R15: 0000000000000001
FS:  00007f8b6d7c26c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000021c030 CR3: 000000005fba0000 CR4: 00000000003506f0
Call Trace:
 <IRQ>
 instrument_atomic_read include/linux/instrumented.h:71 [inline]
 test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
 hlock_class kernel/locking/lockdep.c:197 [inline]
 __lock_acquire+0x12e8/0x7d10 kernel/locking/lockdep.c:5009
 lock_acquire+0x19e/0x400 kernel/locking/lockdep.c:5623
 rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:313
 rcu_read_lock include/linux/rcupdate.h:740 [inline]
 advance_sched+0x6ca/0x940 net/sched/sch_taprio.c:769
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x4f2/0xb70 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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:memset_erms+0xb/0x10 arch/x86/lib/memset_64.S:65
Code: 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 f3 48 ab 89 d1 f3 aa 4c 89 c8 c3 90 49 89 f9 40 88 f0 48 89 d1 f3 aa <4c> 89 c8 c3 90 49 89 fa 40 0f b6 ce 48 b8 01 01 01 01 01 01 01 01
RSP: 0018:ffffc9000352fa98 EFLAGS: 00000202
RAX: ffffffff87da9100 RBX: ffffc9000352fb00 RCX: 0000000000000000
RDX: 0000000000000038 RSI: 0000000000000000 RDI: ffffc9000352fb38
RBP: ffffc9000352fc90 R08: ffffc9000352fb37 R09: ffffc9000352fb00
R10: dffffc0000000000 R11: fffff520006a5f67 R12: ffffc9000352fc00
R13: 1ffff920006a5f5c R14: f8f8f8f8f8f8f8f8 R15: dffffc0000000000
 __copy_msghdr_from_user net/socket.c:2324 [inline]
 copy_msghdr_from_user net/socket.c:2378 [inline]
 recvmsg_copy_msghdr net/socket.c:2630 [inline]
 ___sys_recvmsg+0x161/0x5c0 net/socket.c:2702
 do_recvmmsg+0x382/0x850 net/socket.c:2800
 __sys_recvmmsg net/socket.c:2879 [inline]
 __do_sys_recvmmsg net/socket.c:2902 [inline]
 __se_sys_recvmmsg net/socket.c:2895 [inline]
 __x64_sys_recvmmsg+0x195/0x250 net/socket.c:2895
 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: 0033:0x7f8b6f589e59
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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8b6d7c2028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f8b6f803090 RCX: 00007f8b6f589e59
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000003
RBP: 00007f8b6f61fd6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8b6f803128 R14: 00007f8b6f803090 R15: 00007ffcd70a3098
 </TASK>