rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (10500 ticks this GP) idle=b9c4/1/0x4000000000000000 softirq=266280/266280 fqs=0
rcu: 	(t=10501 jiffies g=317629 q=232 ncpus=2)
rcu: rcu_preempt kthread timer wakeup didn't happen for 10500 jiffies! g317629 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=254674
rcu: rcu_preempt kthread starved for 10501 jiffies! g317629 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
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:I stack:28800 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5381 [inline]
 __schedule+0xc9a/0x5880 kernel/sched/core.c:6710
 schedule+0xde/0x1a0 kernel/sched/core.c:6786
 schedule_timeout+0x14e/0x2b0 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x190/0x910 kernel/rcu/tree.c:1609
 rcu_gp_kthread+0x23a/0x360 kernel/rcu/tree.c:1808
 kthread+0x344/0x440 kernel/kthread.c:389
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 22793 Comm: syz-executor.2 Not tainted 6.4.0-syzkaller-11311-g24be4d0b46bb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
RIP: 0010:check_preemption_disabled+0x9/0x170 lib/smp_processor_id.c:13
Code: 0f 1f 44 00 00 0f 0b 0f 1f 44 00 00 5b e9 6f fb ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 41 56 41 55 49 89 f5 41 54 <55> 48 89 fd 53 0f 1f 44 00 00 65 44 8b 25 11 c1 e4 75 65 8b 1d 06
RSP: 0018:ffffc90000007c40 EFLAGS: 00000083
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff816640b5
RDX: fffffbfff1d53c63 RSI: ffffffff8ac78ae0 RDI: ffffffff8ac78b20
RBP: 1ffff92000000f91 R08: 0000000000000000 R09: fffffbfff1d53c62
R10: ffffffff8ea9e317 R11: 0000000000000001 R12: ffffffff923e55d8
R13: ffffffff8ac78ae0 R14: 1ffff92000000fad R15: ffff8880430be340
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1c852d56be CR3: 00000000857fb000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
 rcu_is_watching+0x12/0xb0 kernel/rcu/tree.c:695
 trace_lock_release include/trace/events/lock.h:69 [inline]
 lock_release+0x4fb/0x670 kernel/locking/lockdep.c:5772
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
 _raw_spin_unlock_irqrestore+0x1a/0x70 kernel/locking/spinlock.c:194
 debug_object_deactivate lib/debugobjects.c:805 [inline]
 debug_object_deactivate+0x268/0x300 lib/debugobjects.c:771
 debug_hrtimer_deactivate kernel/time/hrtimer.c:427 [inline]
 debug_deactivate kernel/time/hrtimer.c:483 [inline]
 __run_hrtimer kernel/time/hrtimer.c:1656 [inline]
 __hrtimer_run_queues+0x3fd/0xc00 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x320/0x7b0 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1098 [inline]
 __sysvec_apic_timer_interrupt+0x14a/0x430 arch/x86/kernel/apic/apic.c:1115
 sysvec_apic_timer_interrupt+0x92/0xc0 arch/x86/kernel/apic/apic.c:1109
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:debug_lockdep_rcu_enabled+0x27/0x30 kernel/rcu/update.c:319
Code: 00 00 00 f3 0f 1e fa 8b 05 3e fe 8a 04 85 c0 74 21 8b 05 3c 32 8b 04 85 c0 74 17 65 48 8b 04 25 80 b9 03 00 8b 80 c4 0a 00 00 <85> c0 0f 94 c0 0f b6 c0 c3 66 0f 1f 00 41 54 53 65 8b 05 7e a0 e3
RSP: 0018:ffffc9001494f5c8 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 000000000002e5ff RCX: 0000000000000000
RDX: 1ffff11027fff216 RSI: ffffffff81e28dcc RDI: ffff88813fff90b0
RBP: ffff8880134c0000 R08: 0000000000000007 R09: 000000000007ffff
R10: 0000000000000005 R11: 0000000000000001 R12: ffff88813fff9000
R13: 0000000000000000 R14: 0000000000000001 R15: ffffea0000b97fc8
 rcu_read_lock_held_common kernel/rcu/update.c:104 [inline]
 rcu_read_lock_held+0x9/0x50 kernel/rcu/update.c:348
 lookup_page_ext mm/page_ext.c:287 [inline]
 page_ext_get+0x134/0x320 mm/page_ext.c:168
 page_table_check_clear.part.0+0x36/0x7b0 mm/page_table_check.c:73
 page_table_check_clear include/linux/mmzone.h:2010 [inline]
 __page_table_check_pte_clear+0x265/0x2b0 mm/page_table_check.c:161
 page_table_check_pte_clear include/linux/page_table_check.h:55 [inline]
 ptep_get_and_clear_full arch/x86/include/asm/pgtable.h:1087 [inline]
 zap_pte_range mm/memory.c:1431 [inline]
 zap_pmd_range mm/memory.c:1570 [inline]
 zap_pud_range mm/memory.c:1599 [inline]
 zap_p4d_range mm/memory.c:1620 [inline]
 unmap_page_range+0x23f0/0x30e0 mm/memory.c:1641
 unmap_single_vma+0x19a/0x2b0 mm/memory.c:1687
 unmap_vmas+0x234/0x380 mm/memory.c:1726
 exit_mmap+0x19c/0x960 mm/mmap.c:3198
 __mmput+0x128/0x4c0 kernel/fork.c:1347
 mmput+0x60/0x70 kernel/fork.c:1369
 exit_mm kernel/exit.c:567 [inline]
 do_exit+0x9a7/0x29a0 kernel/exit.c:861
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1024
 get_signal+0x249b/0x25f0 kernel/signal.c:2877
 arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:308
 exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
 exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297
 do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc59288c389
Code: Unable to access opcode bytes at 0x7fc59288c35f.
RSP: 002b:00007fc5935e2218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fc5929abf88 RCX: 00007fc59288c389
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fc5929abf88
RBP: 00007fc5929abf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc5929abf8c
R13: 00007ffd01336f1f R14: 00007fc5935e2300 R15: 0000000000022000
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 22793 Comm: syz-executor.2 Not tainted 6.4.0-syzkaller-11311-g24be4d0b46bb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:200
Code: 66 a0 91 02 66 0f 1f 44 00 00 f3 0f 1e fa 48 8b be b0 01 00 00 e8 b0 ff ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 <f3> 0f 1e fa 65 8b 05 ad da 7e 7e 89 c1 48 8b 34 24 81 e1 00 01 00
RSP: 0018:ffffc90000007dc8 EFLAGS: 00000046
RAX: ffff8880b982b9d0 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 1ffff1101730573a RSI: ffffffff8a1142a6 RDI: 0000000000000006
RBP: ffff8880430be340 R08: 0000000000000006 R09: ffff8880430be340
R10: ffff8880430be340 R11: 0000000000000001 R12: ffff8880b982b880
R13: 0000000000000000 R14: ffff8880b982b880 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1c852d56be CR3: 00000000857fb000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 rb_link_node include/linux/rbtree.h:62 [inline]
 rb_add_cached include/linux/rbtree.h:182 [inline]
 timerqueue_add+0x1d9/0x330 lib/timerqueue.c:40
 enqueue_hrtimer+0x171/0x320 kernel/time/hrtimer.c:1094
 __run_hrtimer kernel/time/hrtimer.c:1705 [inline]
 __hrtimer_run_queues+0xa65/0xc00 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x320/0x7b0 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1098 [inline]
 __sysvec_apic_timer_interrupt+0x14a/0x430 arch/x86/kernel/apic/apic.c:1115
 sysvec_apic_timer_interrupt+0x92/0xc0 arch/x86/kernel/apic/apic.c:1109
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:debug_lockdep_rcu_enabled+0x27/0x30 kernel/rcu/update.c:319
Code: 00 00 00 f3 0f 1e fa 8b 05 3e fe 8a 04 85 c0 74 21 8b 05 3c 32 8b 04 85 c0 74 17 65 48 8b 04 25 80 b9 03 00 8b 80 c4 0a 00 00 <85> c0 0f 94 c0 0f b6 c0 c3 66 0f 1f 00 41 54 53 65 8b 05 7e a0 e3
RSP: 0018:ffffc9001494f5c8 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 000000000002e5ff RCX: 0000000000000000
RDX: 1ffff11027fff216 RSI: ffffffff81e28dcc RDI: ffff88813fff90b0
RBP: ffff8880134c0000 R08: 0000000000000007 R09: 000000000007ffff
R10: 0000000000000005 R11: 0000000000000001 R12: ffff88813fff9000
R13: 0000000000000000 R14: 0000000000000001 R15: ffffea0000b97fc8
 rcu_read_lock_held_common kernel/rcu/update.c:104 [inline]
 rcu_read_lock_held+0x9/0x50 kernel/rcu/update.c:348
 lookup_page_ext mm/page_ext.c:287 [inline]
 page_ext_get+0x134/0x320 mm/page_ext.c:168
 page_table_check_clear.part.0+0x36/0x7b0 mm/page_table_check.c:73
 page_table_check_clear include/linux/mmzone.h:2010 [inline]
 __page_table_check_pte_clear+0x265/0x2b0 mm/page_table_check.c:161
 page_table_check_pte_clear include/linux/page_table_check.h:55 [inline]
 ptep_get_and_clear_full arch/x86/include/asm/pgtable.h:1087 [inline]
 zap_pte_range mm/memory.c:1431 [inline]
 zap_pmd_range mm/memory.c:1570 [inline]
 zap_pud_range mm/memory.c:1599 [inline]
 zap_p4d_range mm/memory.c:1620 [inline]
 unmap_page_range+0x23f0/0x30e0 mm/memory.c:1641
 unmap_single_vma+0x19a/0x2b0 mm/memory.c:1687
 unmap_vmas+0x234/0x380 mm/memory.c:1726
 exit_mmap+0x19c/0x960 mm/mmap.c:3198
 __mmput+0x128/0x4c0 kernel/fork.c:1347
 mmput+0x60/0x70 kernel/fork.c:1369
 exit_mm kernel/exit.c:567 [inline]
 do_exit+0x9a7/0x29a0 kernel/exit.c:861
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1024
 get_signal+0x249b/0x25f0 kernel/signal.c:2877
 arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:308
 exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
 exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297
 do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc59288c389
Code: Unable to access opcode bytes at 0x7fc59288c35f.
RSP: 002b:00007fc5935e2218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fc5929abf88 RCX: 00007fc59288c389
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fc5929abf88
RBP: 00007fc5929abf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc5929abf8c
R13: 00007ffd01336f1f R14: 00007fc5935e2300 R15: 0000000000022000
 </TASK>
CPU: 1 PID: 22802 Comm: syz-executor.1 Not tainted 6.4.0-syzkaller-11311-g24be4d0b46bb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
RIP: 0010:csd_lock_wait kernel/smp.c:296 [inline]
RIP: 0010:smp_call_function_many_cond+0x699/0x1720 kernel/smp.c:835
Code: 0b 00 85 ed 74 48 48 8b 44 24 08 49 89 c4 83 e0 07 49 c1 ec 03 48 89 c5 4d 01 f4 83 c5 03 e8 ee 53 0b 00 f3 90 41 0f b6 04 24 <40> 38 c5 7c 08 84 c0 0f 85 d1 0d 00 00 8b 43 08 31 ff 83 e0 01 41
RSP: 0018:ffffc90014c67b88 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff8880b9844fe0 RCX: ffffc90003d42000
RDX: 0000000000040000 RSI: ffffffff81798ae2 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffffed10173089fd
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000001
FS:  00007f2452934700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e723000 CR3: 000000008a348000 CR4: 0000000000350ee0
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 clock_was_set+0x17b/0x830 kernel/time/hrtimer.c:976
 do_settimeofday64 kernel/time/timekeeping.c:1345 [inline]
 do_settimeofday64+0x3c4/0x5d0 kernel/time/timekeeping.c:1312
 do_sys_settimeofday64 kernel/time/time.c:195 [inline]
 do_sys_settimeofday64+0x1e2/0x270 kernel/time/time.c:169
 __do_sys_clock_settime kernel/time/posix-timers.c:1129 [inline]
 __se_sys_clock_settime kernel/time/posix-timers.c:1113 [inline]
 __x64_sys_clock_settime+0x1a5/0x280 kernel/time/posix-timers.c:1113
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f2451c8c389
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 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:00007f2452934168 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3
RAX: ffffffffffffffda RBX: 00007f2451dabf80 RCX: 00007f2451c8c389
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000000
RBP: 00007f2451cd7493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff115769bf R14: 00007f2452934300 R15: 0000000000022000
 </TASK>