rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P7702/1:b..l
	(detected by 1, t=10502 jiffies, g=63841, q=12)
task:syz-executor.3  state:R  running task     stack:20344 pid: 7702 ppid:  7700 flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5030 [inline]
 __schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
 preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6780
 irqentry_exit+0x53/0x80 kernel/entry/common.c:432
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:check_kcov_mode kernel/kcov.c:165 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:218 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp1+0x2a/0x80 kernel/kcov.c:270
Code: 4c 8b 04 24 65 48 8b 15 94 10 82 7e 65 8b 05 95 10 82 7e a9 00 01 ff 00 74 10 a9 00 01 00 00 74 5b 83 ba 34 16 00 00 00 74 52 <8b> 82 10 16 00 00 83 f8 03 75 47 48 8b 8a 18 16 00 00 44 8b 92 14
RSP: 0000:ffffc90004d5f6c0 EFLAGS: 00000246
RAX: 0000000080000000 RBX: 0000000000000006 RCX: dffffc0000000000
RDX: ffff8880204b1dc0 RSI: 0000000000000006 RDI: 0000000000000040
RBP: 000000000000023a R08: ffffffff842f8af2 R09: ffffffff8430021c
R10: 0000000000000002 R11: ffff8880204b1dc0 R12: ffffc90004d5f828
R13: ffff88806fe63702 R14: ffffc90004d5f838 R15: 1ffff920009abf07
 xas_start+0x372/0x7b0 lib/xarray.c:193
 xas_load lib/xarray.c:233 [inline]
 xas_find+0x173/0xaa0 lib/xarray.c:1249
 find_get_entry mm/filemap.c:1978 [inline]
 find_lock_entries+0x22a/0x1030 mm/filemap.c:2092
 shmem_undo_range+0x2a3/0x1b50 mm/shmem.c:943
 shmem_truncate_range mm/shmem.c:1063 [inline]
 shmem_evict_inode+0x21b/0xa00 mm/shmem.c:1145
 evict+0x2a4/0x620 fs/inode.c:587
 __dentry_kill+0x436/0x650 fs/dcache.c:582
 dentry_kill+0xbb/0x290
 dput+0xd8/0x1a0 fs/dcache.c:889
 __fput+0x5ec/0x890 fs/file_table.c:288
 task_work_run+0x129/0x1a0 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:181
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fdd26728c4b
RSP: 002b:00007fff5cad7660 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007fdd26728c4b
RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000003
RBP: 00007fff5cad771c R08: 0000000000000000 R09: 00007fff5cad7407
R10: 0000000000000000 R11: 0000000000000246 R12: 0000555555d0495b
R13: 0000555555d04900 R14: 00007fdd26788840 R15: 0000000000000000
 </TASK>
rcu: rcu_preempt kthread starved for 10538 jiffies! g63841 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R  running task     stack:27000 pid:   15 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5030 [inline]
 __schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
 schedule+0x11b/0x1f0 kernel/sched/core.c:6459
 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1914
 rcu_gp_fqs_loop+0x2bf/0x1080 kernel/rcu/tree.c:1972
 rcu_gp_kthread+0xa4/0x360 kernel/rcu/tree.c:2145
 kthread+0x3f6/0x4f0 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300
 </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: 12220 Comm: syz-executor.0 Not tainted 5.15.159-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:pid_task+0x1/0x140 kernel/pid.c:397
Code: 48 7d 8c 48 89 de e8 0e 0a d6 02 48 c7 c7 20 48 7d 8c 48 89 de e8 ff 09 d6 02 e9 08 fe ff ff 66 2e 0f 1f 84 00 00 00 00 00 55 <41> 56 53 89 f5 48 89 fb e8 02 e5 2b 00 48 85 db 74 73 41 89 ee bf
RSP: 0018:ffffc90000007c10 EFLAGS: 00000046
RAX: ffffffff814fdd41 RBX: 0000000000000001 RCX: ffff888022f3d940
RDX: 0000000080010002 RSI: 0000000000000001 RDI: ffff8880605a7a00
RBP: ffffc90000007ce8 R08: ffffffff814fdd2f R09: fffffbfff1f7f019
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888019d5c638
R13: dffffc0000000000 R14: ffffc90000007c80 R15: ffffc90000007c80
FS:  00007fd50b3b26c0(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6d1933f000 CR3: 000000007c40d000 CR4: 00000000003506f0
DR0: 0000000000002800 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 send_sigqueue+0x1a5/0x6e0 kernel/signal.c:1970
 posix_timer_event kernel/time/posix-timers.c:359 [inline]
 posix_timer_fn+0x186/0x390 kernel/time/posix-timers.c:385
 __run_hrtimer kernel/time/hrtimer.c:1686 [inline]
 __hrtimer_run_queues+0x598/0xcf0 kernel/time/hrtimer.c:1750
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
 __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202
Code: 51 80 f6 ff 90 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 5e 54 3b f7 48 89 df e8 36 a8 3c f7 e8 51 5f 5f f7 fb bf 01 00 00 00 <e8> 76 e4 2f f7 65 8b 05 47 f2 da 75 85 c0 74 02 5b c3 e8 b4 10 d9
RSP: 0018:ffffc90003037bc0 EFLAGS: 00000282
RAX: 9bbf4247cafe5200 RBX: ffff888024729280 RCX: ffffffff913eff03
RDX: dffffc0000000000 RSI: ffffffff8a8b2980 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff8186dcf0 R09: ffffed10048e5251
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000021
R13: dffffc0000000000 R14: ffff888024729718 R15: ffff888024729280
 spin_unlock_irq include/linux/spinlock.h:413 [inline]
 get_signal+0x13ee/0x14e0 kernel/signal.c:2892
 arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fd50ce3eee7
Code: 14 25 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89
RSP: 002b:00007fd50b3b20c8 EFLAGS: 00000246
RAX: 000000000000012b RBX: 00007fd50cf6df80 RCX: 00007fd50ce3eee9
RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000004
RBP: 00007fd50ce8b49e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fd50cf6df80 R15: 00007ffcfab2c5e8
 </TASK>