rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-....: (1 GPs behind) idle=865/1/0x4000000000000000 softirq=65688/65689 fqs=5250 
	(detected by 0, t=10502 jiffies, g=86413, q=774)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 21812 Comm: syz.3.4679 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:irq_work_run_list+0x302/0x340 kernel/irq_work.c:178
Code: 02 ff ff ff e8 2f 12 f4 ff 49 bd 00 00 00 00 00 fc ff df eb 0c e8 1e 12 f4 ff eb 05 e8 17 12 f4 ff 48 c7 44 24 20 0e 36 e0 45 <48> 8b 44 24 18 4a c7 04 28 00 00 00 00 65 48 8b 04 25 28 00 00 00
RSP: 0018:ffffc90000dd0f00 EFLAGS: 00000006
RAX: ffffffff81852261 RBX: ffff8880b913b1f8 RCX: ffff888026495940
RDX: 0000000000010000 RSI: 0000000000000004 RDI: ffff8880b913b1f8
RBP: ffffc90000dd0fb0 R08: ffff8880b913b1fb R09: 1ffff1101722763f
R10: dffffc0000000000 R11: ffffed1017227640 R12: 1ffff11004c92c83
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000020
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c302a33 CR3: 000000006654b000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 irq_work_run+0x63/0xe0 kernel/irq_work.c:186
 __sysvec_irq_work+0x98/0x240 arch/x86/kernel/irq_work.c:22
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0x98/0xc0 arch/x86/kernel/irq_work.c:17
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x7f/0x4a0 kernel/rcu/tree_plugin.h:674
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 32 e1 9c 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc90002e4f760 EFLAGS: 00000206
RAX: c6a47e0f97257300 RBX: 1ffff920005c9ef0 RCX: c6a47e0f97257300
RDX: dffffc0000000000 RSI: ffffffff8a2b2800 RDI: ffffffff8a79fe40
RBP: ffffc90002e4f830 R08: ffffffff901d50c7 R09: 1ffffffff203aa18
R10: dffffc0000000000 R11: fffffbfff203aa19 R12: ffffffff8c323000
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000002
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:772 [inline]
 __unlock_page_memcg+0xea/0x100 mm/memcontrol.c:2093
 zap_pte_range mm/memory.c:1384 [inline]
 zap_pmd_range mm/memory.c:1505 [inline]
 zap_pud_range mm/memory.c:1534 [inline]
 zap_p4d_range mm/memory.c:1555 [inline]
 unmap_page_range+0xf96/0x2500 mm/memory.c:1576
 unmap_vmas+0x131/0x250 mm/memory.c:1653
 exit_mmap+0x3b9/0x640 mm/mmap.c:3216
 __mmput+0x115/0x3b0 kernel/fork.c:1127
 exit_mm+0x588/0x6e0 kernel/exit.c:550
 do_exit+0x5a9/0x20c0 kernel/exit.c:870
 do_group_exit+0x12e/0x300 kernel/exit.c:997
 __do_sys_exit_group kernel/exit.c:1008 [inline]
 __se_sys_exit_group kernel/exit.c:1006 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1006
 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: 0033:0x7fbfab0e4dd9
Code: Unable to access opcode bytes at RIP 0x7fbfab0e4daf.
RSP: 002b:00007ffd38253fd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbfab0e4dd9
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffd3825403c R08: 0000000000000000 R09: 00000000000927c0
R10: 00007fbfab35e038 R11: 0000000000000246 R12: 0000000000000192
R13: 00000000000927c0 R14: 00000000000b63af R15: 00007ffd38254090
 </TASK>