rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2663 jiffies s: 1705 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: 4845 Comm: syz-executor114 Not tainted 6.1.119-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:106 [inline]
RIP: 0010:ct_irq_exit_irqson+0x97/0x1b0 kernel/context_tracking.c:421
Code: 43 c6 44 3d 0b f3 e8 98 5a d4 ff 4c 89 f3 48 c1 eb 03 42 80 3c 3b 00 74 08 4c 89 f7 e8 22 e4 2b 00 48 c7 44 24 40 00 00 00 00 <9c> 8f 44 24 40 42 80 3c 3b 00 74 08 4c 89 f7 e8 85 e3 2b 00 4c 8d
RSP: 0018:ffffc9000492efc0 EFLAGS: 00000046
RAX: ffffffff81b64158 RBX: 1ffff92000925e00 RCX: ffff8880782ed940
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000008
RBP: ffffc9000492f070 R08: ffffffff81b0e0bd R09: fffffbfff1d35ef6
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff92000925df8 R14: ffffc9000492f000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6738f96b78 CR3: 000000001e382000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 trace_irq_enable_rcuidle+0xda/0x140 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x24/0x40 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:rcu_read_unlock_special+0x84/0x540 kernel/rcu/tree_plugin.h:682
Code: f1 f1 f1 00 f2 f2 f2 49 89 04 17 66 41 c7 44 17 09 f3 f3 41 c6 44 17 0b f3 65 44 8b 25 7d 18 8e 7e 41 f7 c4 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 3a 00 00 00 00 66 42 c7 44 3a
RSP: 0018:ffffc9000492f160 EFLAGS: 00000206
RAX: 842dbfecaaa85300 RBX: 1ffff92000925e34 RCX: ffffffff816b124a
RDX: dffffc0000000000 RSI: ffffffff8b0c01c0 RDI: ffffffff8b5e6200
RBP: ffffc9000492f238 R08: dffffc0000000000 R09: fffffbfff224984d
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8d32fe00
R13: ffff8880782edd98 R14: ffffc9000492f1a0 R15: 1ffff92000925e30
 __rcu_read_unlock+0x92/0x100 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 __folio_memcg_unlock+0xfd/0x120 mm/memcontrol.c:2148
 page_remove_rmap+0x819/0xed0 mm/rmap.c:1462
 zap_pte_range mm/memory.c:1453 [inline]
 zap_pmd_range mm/memory.c:1574 [inline]
 zap_pud_range mm/memory.c:1603 [inline]
 zap_p4d_range mm/memory.c:1624 [inline]
 unmap_page_range+0x1217/0x2740 mm/memory.c:1645
 unmap_vmas+0x48b/0x640 mm/memory.c:1730
 exit_mmap+0x249/0x980 mm/mmap.c:3234
 __mmput+0x115/0x3c0 kernel/fork.c:1200
 exit_mm+0x226/0x300 kernel/exit.c:565
 do_exit+0x9f6/0x26a0 kernel/exit.c:858
 do_group_exit+0x202/0x2b0 kernel/exit.c:1021
 get_signal+0x16f7/0x17d0 kernel/signal.c:2871
 arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f6738f404e9
Code: Unable to access opcode bytes at 0x7f6738f404bf.
RSP: 002b:00007f6738f01238 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007f6738fca308 RCX: 00007f6738f404e9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f6738fca30c
RBP: 00007f6738fca300 R08: 00007f6738f016c0 R09: 00007f6738f016c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6738fca30c
R13: 0000000000000000 R14: 00007ffdd94bd330 R15: 00007ffdd94bd418
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.375 msecs