rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {
 } 2671 jiffies s: 12641 root: 0x0/.
rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {
 0-...D
 } 2670 jiffies s: 12645 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):

Sending NMI from CPU 1 to CPUs 0:
(ME) 11*512kB 
NMI backtrace for cpu 0
CPU: 0 PID: 20293 Comm: syz-executor.0 Not tainted 6.8.0-rc6-syzkaller-00190-ga788e53c05ae #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:__sanitizer_cov_trace_switch+0x3b/0x90 kernel/kcov.c:341
Code: 53 48 8b 46 08 48 83 f8 20 74 63 77 44 48 83 f8 08 74 53 48 83 f8 10 75 2f 41 bd 03 00 00 00 4c 8b 75 00 31 db 4d 85 f6 74 1e <48> 8b 74 dd 10 4c 89 e2 4c 89 ef 48 83 c3 01 48 8b 4c 24 28 e8 2c
RSP: 0018:ffffc90000006f38 EFLAGS: 00000002
RAX: 0000000000000000 RBX: 0000000000000009 RCX: ffffffff864fb82e
RDX: ffff888136860000 RSI: 0000000000000075 RDI: 0000000000000001
RBP: ffffffff87523520 R08: 0000000000000001 R09: 0000000000000075
R10: 0000000000000075 R11: 0000000000461ee8 R12: 0000000000000075
R13: 0000000000000001 R14: 000000000000000a R15: 0000000000000006
FS:  0000000000000000(0000) GS:ffff8881f6600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f00cb307000 CR3: 0000000007c9d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 format_decode+0x46e/0xba0 lib/vsprintf.c:2634
 vsnprintf+0x13d/0x1870 lib/vsprintf.c:2776
 sprintf+0xcd/0x100 lib/vsprintf.c:3028
 print_time kernel/printk/printk.c:1324 [inline]
 info_print_prefix+0x258/0x350 kernel/printk/printk.c:1350
 record_print_text+0x143/0x410 kernel/printk/printk.c:1399
 printk_get_next_message+0x2ce/0x7c0 kernel/printk/printk.c:2828
 console_emit_next_record kernel/printk/printk.c:2868 [inline]
 console_flush_all+0x3b3/0xd60 kernel/printk/printk.c:2967
 console_unlock+0x10c/0x260 kernel/printk/printk.c:3036
 vprintk_emit+0x17f/0x5f0 kernel/printk/printk.c:2303
 vprintk+0x7b/0x90 kernel/printk/printk_safe.c:45
 _printk+0xc8/0x100 kernel/printk/printk.c:2328
 show_free_areas+0x1672/0x2140 mm/show_mem.c:381
 __show_mem+0x34/0x140 mm/show_mem.c:406
 k_spec drivers/tty/vt/keyboard.c:667 [inline]
 k_spec+0xea/0x140 drivers/tty/vt/keyboard.c:656
 kbd_keycode drivers/tty/vt/keyboard.c:1524 [inline]
 kbd_event+0xcc8/0x17c0 drivers/tty/vt/keyboard.c:1543
 input_to_handler+0x382/0x4c0 drivers/input/input.c:132
 input_pass_values+0x5c9/0x840 drivers/input/input.c:161
 input_event_dispose+0x377/0x630 drivers/input/input.c:378
 input_handle_event+0x11c/0xd80 drivers/input/input.c:406
 input_repeat_key+0x251/0x340 drivers/input/input.c:2263
 call_timer_fn+0x193/0x590 kernel/time/timer.c:1700
 expire_timers kernel/time/timer.c:1751 [inline]
 __run_timers+0x759/0xaa0 kernel/time/timer.c:2038
 run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2051
 __do_softirq+0x20a/0x8c1 kernel/softirq.c:553
 invoke_softirq kernel/softirq.c:427 [inline]
 __irq_exit_rcu kernel/softirq.c:632 [inline]
 irq_exit_rcu+0xa7/0x110 kernel/softirq.c:644
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1076
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:_compound_head include/linux/page-flags.h:247 [inline]
RIP: 0010:PageSlab include/linux/page-flags.h:481 [inline]
RIP: 0010:page_table_check_clear.part.0+0x40/0x7f0 mm/page_table_check.c:74
Code: e3 06 e8 13 f6 ad ff 48 b8 00 00 00 00 00 ea ff ff 48 01 c3 4c 8d 6b 08 48 89 df e8 8a ef ff ff 4c 89 ea 49 89 c4 48 c1 ea 03 <48> b8 00 00 00 00 00 fc ff df 80 3c 02 00 0f 85 f3 06 00 00 48 8b
RSP: 0018:ffffc90006f77610 EFLAGS: 00000a06
RAX: ffff8881070dba10 RBX: ffffea00046afb40 RCX: ffffffff819fe0c4
RDX: 1ffffd40008d5f69 RSI: ffffffff819fe0e0 RDI: 0000000000000007
RBP: 000000000011abed R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000003 R12: ffff8881070dba10
R13: ffffea00046afb48 R14: 0000000000000001 R15: dffffc0000000000
 page_table_check_clear mm/page_table_check.c:68 [inline]
 __page_table_check_pte_clear+0x318/0x570 mm/page_table_check.c:158
 page_table_check_pte_clear include/linux/page_table_check.h:49 [inline]
 ptep_get_and_clear_full arch/x86/include/asm/pgtable.h:1302 [inline]
 zap_pte_range mm/memory.c:1452 [inline]
 zap_pmd_range mm/memory.c:1597 [inline]
 zap_pud_range mm/memory.c:1626 [inline]
 zap_p4d_range mm/memory.c:1647 [inline]
 unmap_page_range+0x1410/0x2250 mm/memory.c:1668
 unmap_single_vma+0x194/0x2b0 mm/memory.c:1714
 unmap_vmas+0x22f/0x490 mm/memory.c:1758
 exit_mmap+0x1c1/0xb50 mm/mmap.c:3279
 __mmput kernel/fork.c:1343 [inline]
 mmput+0xdb/0x420 kernel/fork.c:1365
 exit_mm kernel/exit.c:569 [inline]
 do_exit+0x9a5/0x2a50 kernel/exit.c:858
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1020
 get_signal+0x23b5/0x2790 kernel/signal.c:2893
 arch_do_signal_or_restart+0x90/0x7f0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
 syscall_exit_to_user_mode+0x144/0x250 kernel/entry/common.c:212
 do_syscall_64+0xe0/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7efdf587ab0b
Code: Unable to access opcode bytes at 0x7efdf587aae1.
RSP: 002b:00007efdf4bf9fa0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007efdf587ab0b
RDX: 0000000000000000 RSI: 0000000000005501 RDI: 0000000000000003
RBP: 00007efdf4bfb070 R08: 0000000000000010 R09: 00302e6364755f79
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007efdf4bfa040 R14: 0000000020000040 R15: 00007efdf5acdb88
 </TASK>
(M) 6*1024kB (ME) 7*2048kB (UME) 705*4096kB (M) = 2943332kB
Node 0 hugepages_total=4 hugepages_free=4 hugepages_surp=0 hugepages_size=2048kB
51843 total pagecache pages
0 pages in swap cache
Free swap  = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly
369995 pages reserved
Mem-Info:
active_anon:537 inactive_anon:11897 isolated_anon:0
 active_file:5291 inactive_file:41740 isolated_file:0
 unevictable:0 dirty:18 writeback:0
 slab_reclaimable:4891 slab_unreclaimable:77609
 mapped:14308 shmem:4812 pagetables:432
 sec_pagetables:0 bounce:0
 kernel_misc_reclaimable:0
 free:1461631 free_pcp:2411 free_cma:0
Node 0 active_anon:2148kB inactive_anon:47588kB active_file:21164kB inactive_file:166960kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:57232kB dirty:72kB writeback:0kB shmem:19248kB writeback_tmp:0kB kernel_stack:4092kB pagetables:1728kB sec_pagetables:0kB all_unreclaimable? no
Node 0 DMA free:15360kB boost:0kB min:20kB low:32kB high:44kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 2812 6727 6727
Node 0 DMA32 free:2879448kB boost:0kB min:4380kB low:7256kB high:10132kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2882936kB mlocked:0kB bounce:0kB free_pcp:3488kB local_pcp:64kB free_cma:0kB
lowmem_reserve[]: 0 0 3915 3915
Node 0 Normal free:2951716kB boost:0kB min:6100kB low:10108kB high:14116kB reserved_highatomic:0KB active_anon:2148kB inactive_anon:47588kB active_file:21164kB inactive_file:166960kB unevictable:0kB writepending:72kB present:5242880kB managed:4009928kB mlocked:0kB bounce:0kB free_pcp:6156kB local_pcp:2664kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15360kB
Node 0 DMA32: 2*4kB (M) 0*8kB 1*16kB (M) 2*32kB (M) 2*64kB (M) 2*128kB (M) 2*256kB (M) 2*512kB (M) 2*1024kB (M) 2*2048kB (M) 701*4096kB (M) = 2879448kB
Node 0 Normal: 945*4kB (UME) 696*8kB (UME) 274*16kB (UME) 260*32kB (UME) 40*64kB (UME) 32*128kB (UME) 30*256kB (UME) 12*512kB (UM) 7*1024kB (UME) 7*2048kB (UME) 705*4096kB (M) = 2951716kB
Node 0 hugepages_total=4 hugepages_free=4 hugepages_surp=0 hugepages_size=2048kB
51843 total pagecache pages
0 pages in swap cache
Free swap  = 124996kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly
369995 pages reserved