rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2631 jiffies s: 190765 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: 12248 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:check_preemption_disabled+0x1/0x110 lib/smp_processor_id.c:13 Code: a0 9d bc 8c 4c 89 f6 e8 8d 34 0b fa e9 6e ff ff ff 00 00 cc cc 00 00 cc cc 48 c7 c7 c0 0c df 8a 48 c7 c6 00 0d df 8a eb 00 55 <41> 57 41 56 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 RSP: 0000:ffffc90003f87478 EFLAGS: 00000002 RAX: 0000000000000003 RBX: ffff8880b8e3b9f0 RCX: ffffffff96bfe103 RDX: fffffffe7d23b901 RSI: ffffffff8adf0d00 RDI: ffffffff8adf0cc0 RBP: 0000000000000000 R08: ffffffff8e1fdeef R09: 1ffffffff1c3fbdd R10: dffffc0000000000 R11: fffffbfff1c3fbde R12: 0000000000000000 R13: dffffc0000000001 R14: 0000000000000000 R15: ffff8880b8e3b9f8 FS: 000055559081a500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fad9fd45690 CR3: 0000000024df1000 CR4: 00000000003506f0 DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: irq_work_queue_on+0x11e/0x260 kernel/irq_work.c:143 rcu_read_unlock_special+0x3c9/0x510 kernel/rcu/tree_plugin.h:678 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426 rcu_read_unlock include/linux/rcupdate.h:823 [inline] trace_call_bpf+0x5bb/0x6b0 kernel/trace/bpf_trace.c:137 perf_trace_run_bpf_submit+0x79/0x1c0 kernel/events/core.c:10027 perf_trace_preemptirq_template+0x268/0x320 include/trace/events/preemptirq.h:14 trace_irq_enable_rcuidle+0xd3/0x140 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+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 33 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: 0000:ffffc90003f87920 EFLAGS: 00000206 RAX: e3300396acfb9b00 RBX: 1ffff920007f0f2c RCX: e3300396acfb9b00 RDX: dffffc0000000000 RSI: ffffffff8a8c10a0 RDI: ffffffff8adf0d20 RBP: ffffc90003f87a18 R08: ffffffff90af7247 R09: 1ffffffff215ee48 R10: dffffc0000000000 R11: fffffbfff215ee49 R12: 0000000000000246 R13: dffffc0000000000 R14: ffff8880b8e3b900 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+0x7e3/0xea0 mm/rmap.c:1462 wp_page_copy+0xc80/0x1680 mm/memory.c:3253 handle_pte_fault mm/memory.c:5047 [inline] __handle_mm_fault mm/memory.c:5171 [inline] handle_mm_fault+0x1d19/0x3ee0 mm/memory.c:5292 do_user_addr_fault+0x51f/0xb10 arch/x86/mm/fault.c:1338 handle_page_fault arch/x86/mm/fault.c:1429 [inline] exc_page_fault+0x60/0x100 arch/x86/mm/fault.c:1482 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:608 RIP: 0033:0x7fad9ee690a2 Code: 14 00 00 4c 8b 05 46 c6 ed 00 48 8b 0d ff c5 ed 00 31 c0 48 8d ac 24 30 01 00 00 48 8d 15 58 a9 1c 00 be 40 00 00 00 48 89 ef 05 e7 c5 ed 00 01 e8 c2 1b 0e 00 31 c0 48 89 ee bf 0f 00 00 00 RSP: 002b:00007ffdda799110 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000004 RDX: 00007fad9f0339f2 RSI: 0000000000000040 RDI: 00007ffdda799240 RBP: 00007ffdda799240 R08: 0000000000000a15 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000207 R13: 00000000000927c0 R14: 00000000000aaa13 R15: 00007ffdda7993a0