rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-....: (1 GPs behind) idle=78f/1/0x4000000000000002 softirq=7820/7821 fqs=2100 (detected by 1, t=10505 jiffies, g=8785, q=5665) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 3872 Comm: syz-executor.3 Not tainted 5.15.137-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 RIP: 0010:asm_sysvec_irq_work+0x0/0x20 arch/x86/include/asm/idtentry.h:660 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 ea 35 db 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 ca 3a db ff RSP: 0018:ffffc90002eeec58 EFLAGS: 00000006 RAX: d85623737215d600 RBX: 1ffff920005ddd98 RCX: ffffffff8162ea18 RDX: dffffc0000000000 RSI: ffffffff8a8b0be0 RDI: ffffffff8ad87b40 RBP: ffffc90002eeed50 R08: dffffc0000000000 R09: fffffbfff1f79a31 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8c923000 R13: ffff88807c033fd8 R14: ffffc90002eeecc0 R15: 1ffff920005ddd94 FS: 00005555558dc480(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc4cef11198 CR3: 0000000075250000 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 dd ce 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: 0018:ffffc90002eeec80 EFLAGS: 00000206