rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-....: (1 GPs behind) idle=cad/1/0x4000000000000002 softirq=12069/12070 fqs=5233 (detected by 1, t=10502 jiffies, g=14933, q=162990) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5731 Comm: syz.2.214 Not tainted 5.15.171-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:asm_sysvec_irq_work+0x0/0x20 arch/x86/include/asm/idtentry.h:707 Code: e9 a5 03 00 00 0f 1f 44 00 00 0f 01 ca fc 6a ff e8 a5 02 00 00 48 89 c4 48 89 e7 e8 ca 0a f4 ff e9 85 03 00 00 0f 1f 44 00 00 <0f> 01 ca fc 6a ff e8 85 02 00 00 48 89 c4 48 89 e7 e8 9a 0f f4 ff RSP: 0000:ffffc90003c678f8 EFLAGS: 00000006 RAX: f26294a3c333c600 RBX: 1ffff9200078cf2c RCX: ffffffff81632d78 RDX: dffffc0000000000 RSI: ffffffff8a8b2a80 RDI: ffffffff8ad90500 RBP: ffffc90003c679f8 R08: dffffc0000000000 R09: fffffbfff20ec621 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8c923c00 R13: ffff88801e11dd98 R14: ffffc90003c67960 R15: 1ffff9200078cf28 FS: 000055557aac2500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4bc707e000 CR3: 0000000062551000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: RIP: 0010:rcu_read_unlock_special+0x84/0x520 kernel/rcu/tree_plugin.h:671 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 ad 92 96 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: 0000:ffffc90003c67920 EFLAGS: 00000206