rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2688 jiffies s: 10265 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 7104 Comm: syz.0.711 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:mark_held_locks kernel/locking/lockdep.c:4299 [inline]
RIP: 0010:__trace_hardirqs_on_caller kernel/locking/lockdep.c:4328 [inline]
RIP: 0010:lockdep_hardirqs_on_prepare+0x35e/0x7c0 kernel/locking/lockdep.c:4387
Code: 49 89 dc 49 81 c4 00 0b 00 00 45 31 ed 49 83 fd 31 73 73 4c 89 e0 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 85 00 00 00 41 8b 47 20 <a9> 00 00 04 00 74 34 25 00 00 03 00 83 f8 01 ba 07 00 00 00 83 da
RSP: 0018:ffffc90003367140 EFLAGS: 00000046
RAX: 000000000002002d RBX: ffff888073870000 RCX: ffffffff8164beb4
RDX: dffffc0000000000 RSI: ffff888073870ad8 RDI: ffffffff91b70240
RBP: ffffc90003367200 R08: ffffffff91b70247 R09: 1ffffffff236e048
R10: dffffc0000000000 R11: fffffbfff236e049 R12: ffff888073870b50
R13: 0000000000000002 R14: 1ffff1100e70e15b R15: ffff888073870b30
FS:  0000000000000000(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2e3b67 CR3: 00000000284f8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000200000000ec0 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 trace_hardirqs_on+0x34/0x40 kernel/trace/trace_preemptirq.c:49
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:rcu_read_unlock_special+0x7f/0x510 kernel/rcu/tree_plugin.h:685
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 d2 68 95 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc900033672c0 EFLAGS: 00000206
RAX: fc3671c739788500 RBX: 1ffff9200066ce60 RCX: fc3671c739788500
RDX: dffffc0000000000 RSI: ffffffff8aac19a0 RDI: ffffffff8aff71e0
RBP: ffffc900033673b0 R08: ffffffff91b70247 R09: 1ffffffff236e048
R10: dffffc0000000000 R11: fffffbfff236e049 R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8c3bb00 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 __folio_memcg_unlock+0xea/0x110 mm/memcontrol.c:2151
 page_remove_rmap+0x7f5/0xef0 mm/rmap.c:1462
 zap_pte_range mm/memory.c:1451 [inline]
 zap_pmd_range mm/memory.c:1572 [inline]
 zap_pud_range mm/memory.c:1601 [inline]
 zap_p4d_range mm/memory.c:1622 [inline]
 unmap_page_range+0x10db/0x25b0 mm/memory.c:1643
 unmap_vmas+0x260/0x390 mm/memory.c:1728
 exit_mmap+0x20d/0x970 mm/mmap.c:3250
 __mmput+0x118/0x3a0 kernel/fork.c:1210
 exit_mm+0x24d/0x350 kernel/exit.c:572
 do_exit+0x958/0x2570 kernel/exit.c:874
 do_group_exit+0x229/0x2e0 kernel/exit.c:1030
 get_signal+0x1259/0x1340 kernel/signal.c:2884
 arch_do_signal_or_restart+0xc4/0x1310 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:213
 __syscall_exit_to_user_mode_work kernel/entry/common.c:295 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:306
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f7d2fd9f559
Code: Unable to access opcode bytes at 0x7f7d2fd9f52f.
RSP: 002b:00007f7d30ce80e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f7d30026098 RCX: 00007f7d2fd9f559
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f7d30026098
RBP: 00007f7d30026090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7d30026128 R14: 00007ffdd2c3d7b0 R15: 00007ffdd2c3d898
 </TASK>