rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-...D } 2680 jiffies s: 29917 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4495 Comm: syslogd Not tainted 6.7.0-rc1-syzkaller-00019-gc42d9eeef8e5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:26 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:67 [inline]
RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:127 [inline]
RIP: 0010:__raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline]
RIP: 0010:_raw_spin_lock_irq+0x88/0x120 kernel/locking/spinlock.c:170
Code: f1 f1 00 f3 f3 f3 4b 89 44 3d 00 4c 89 f3 48 c1 eb 03 42 80 3c 3b 00 74 08 4c 89 f7 e8 a1 27 c9 f6 48 c7 44 24 20 00 00 00 00 <9c> 8f 44 24 20 42 80 3c 3b 00 74 08 4c 89 f7 e8 e4 26 c9 f6 8b 44
RSP: 0018:ffffc900001f0cc0 EFLAGS: 00000046
RAX: f3f3f300f1f1f1f1 RBX: 1ffff9200003e19c RCX: ffff88806eb0d940
RDX: 0000000080010001 RSI: ffffffff8bbdf2e0 RDI: ffff8880b992b880
RBP: ffffc900001f0d50 R08: ffffffff817d5e88 R09: 1ffffffff1e01825
R10: dffffc0000000000 R11: fffffbfff1e01826 R12: ffff8880b992b880
R13: 1ffff9200003e198 R14: ffffc900001f0ce0 R15: dffffc0000000000
FS:  00007f7ad8bfd380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe38859d988 CR3: 00000000173bf000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __run_hrtimer kernel/time/hrtimer.c:1692 [inline]
 __hrtimer_run_queues+0x66c/0xd20 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x396/0x980 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
 __sysvec_apic_timer_interrupt+0x104/0x3a0 arch/x86/kernel/apic/apic.c:1082
 sysvec_apic_timer_interrupt+0x92/0xb0 arch/x86/kernel/apic/apic.c:1076
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:kasan_check_range+0x1b8/0x290 mm/kasan/generic.c:187
Code: 4d 01 fb 48 8d 5d 07 48 85 ed 48 0f 49 dd 48 83 e3 f8 48 29 dd 74 12 41 80 3b 00 0f 85 a2 00 00 00 49 ff c3 48 ff cd 75 ee 5b <41> 5c 41 5e 41 5f 5d c3 40 84 ed 75 5f f7 c5 00 ff 00 00 75 5c f7
RSP: 0018:ffffc90003157958 EFLAGS: 00000246
RAX: ffffffff84813701 RBX: 00000000000000bc RCX: ffffffff84813783
RDX: 0000000000000001 RSI: 00000000000000bc RDI: ffff8880496bc000
RBP: 0000000000000000 R08: ffff8880496bc0bb R09: 1ffff110092d7817
R10: dffffc0000000000 R11: ffffed10092d7818 R12: 0000000000000000
R13: ffff8880496bc000 R14: dffffc0000000001 R15: 0000000000000018
 instrument_copy_from_user_before include/linux/instrumented.h:129 [inline]
 copy_from_user_iter lib/iov_iter.c:54 [inline]
 iterate_ubuf include/linux/iov_iter.h:29 [inline]
 iterate_and_advance2 include/linux/iov_iter.h:245 [inline]
 iterate_and_advance include/linux/iov_iter.h:271 [inline]
 __copy_from_iter lib/iov_iter.c:268 [inline]
 copy_page_from_iter_atomic+0x2f3/0x1e80 lib/iov_iter.c:500
 generic_perform_write+0x392/0x630 mm/filemap.c:3926
 shmem_file_write_iter+0xfc/0x120 mm/shmem.c:2878
 call_write_iter include/linux/fs.h:2020 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x792/0xb20 fs/read_write.c:584
 ksys_write+0x1a0/0x2c0 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x45/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f7ad8d51bf2
Code: 89 c7 48 89 44 24 08 e8 7b 34 fa ff 48 8b 44 24 08 48 83 c4 28 c3 c3 64 8b 04 25 18 00 00 00 85 c0 75 20 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 6f 48 8b 15 07 a2 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffe28fb2dc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f7ad8d51bf2
RDX: 0000000000000113 RSI: 000055d3669d5c50 RDI: 0000000000000003
RBP: 000055d3669d5c50 R08: 0000000000000001 R09: 0000000000000000
R10: 00007f7ad8ef03a3 R11: 0000000000000246 R12: 0000000000000113
R13: 00007f7ad8bfd300 R14: 0000000000000005 R15: 000055d3669d5a60
 </TASK>