rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2646 jiffies s: 571197 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: 22590 Comm: syz.0.15889 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:migrate_disable+0x87/0x180 kernel/sched/core.c:2225 Code: e8 6e cb ff ff e8 09 3c d7 08 41 89 c6 83 f8 08 0f 83 b1 00 00 00 4e 8d 3c f5 80 f9 65 8c 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 <74> 08 4c 89 ff e8 df 69 7a 00 49 c7 c6 10 ba 03 00 4d 03 37 4c 89 RSP: 0018:ffffc900001e0228 EFLAGS: 00000046 RAX: 1ffffffff18cbf31 RBX: ffff8880277bc038 RCX: f4cd96c5d9c99e00 RDX: 0000000000000100 RSI: ffffffff8adf5dc0 RDI: ffffffff8adf5d80 RBP: 0000000000000000 R08: dffffc0000000000 R09: 1ffffffff2162048 R10: dffffc0000000000 R11: fffffbfff2162049 R12: dffffc0000000000 R13: 1ffff11004ef7807 R14: 0000000000000001 R15: ffffffff8c65f988 FS: 00007f89073f66c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b31a12ff8 CR3: 0000000074d05000 CR4: 00000000003506e0 DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: bpf_prog_run_array include/linux/bpf.h:1663 [inline] trace_call_bpf+0x227/0x6b0 kernel/trace/bpf_trace.c:135 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_disable include/trace/events/preemptirq.h:36 [inline] trace_hardirqs_off_finish+0x13f/0x180 kernel/trace/trace_preemptirq.c:67 irqentry_enter+0x33/0x50 kernel/entry/common.c:382 sysvec_irq_work+0xa/0xc0 arch/x86/kernel/irq_work.c:17 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 a2 7c 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:ffffc900001e05a0 EFLAGS: 00000206 RAX: f4cd96c5d9c99e00 RBX: 1ffff9200003c0bc RCX: f4cd96c5d9c99e00 RDX: dffffc0000000000 RSI: ffffffff8a8c17a0 RDI: ffffffff8adf5de0 RBP: ffffc900001e0690 R08: ffff8880b8f3580b R09: 1ffff110171e6b01 R10: dffffc0000000000 R11: ffffed10171e6b02 R12: 0000000000000246 R13: dffffc0000000000 R14: ffff8880b8f3bb00 R15: 0000000000000002 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426 rcu_read_unlock include/linux/rcupdate.h:823 [inline] is_bpf_text_address+0x27a/0x2a0 kernel/bpf/core.c:737 kernel_text_address+0x9c/0xd0 kernel/extable.c:125 __kernel_text_address+0x9/0x30 kernel/extable.c:79 unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323 arch_stack_walk+0xf2/0x140 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:46 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:53 kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:516 ____kasan_slab_free+0x126/0x1f0 mm/kasan/common.c:237 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1729 [inline] slab_free_freelist_hook+0x133/0x1b0 mm/slub.c:1755 slab_free mm/slub.c:3687 [inline] kmem_cache_free+0xf7/0x2a0 mm/slub.c:3709 rcu_do_batch kernel/rcu/tree.c:2297 [inline] rcu_core+0x9a3/0x1740 kernel/rcu/tree.c:2557 handle_softirqs+0x291/0x910 kernel/softirq.c:596 __do_softirq kernel/softirq.c:630 [inline] invoke_softirq kernel/softirq.c:470 [inline] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline] sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691 RIP: 0010:memcg_account_kmem+0x187/0x1c0 mm/memcontrol.c:-1 Code: 80 00 00 00 75 1f 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 29 45 55 08 41 f7 c6 00 02 00 00 75 b2 eb b1 e8 09 45 55 08 <48> 81 44 24 18 c0 02 00 00 44 89 f8 45 85 ff 7e 0e 89 c6 48 8b 7c RSP: 0018:ffffc9000fe07760 EFLAGS: 00000206 RAX: f4cd96c5d9c99e00 RBX: 00000000ffffffff RCX: f4cd96c5d9c99e00 RDX: dffffc0000000000 RSI: ffffffff8a8c17a0 RDI: ffffffff8adf5de0 RBP: ffffc9000fe07830 R08: ffff8880b8f3580b R09: 1ffff110171e6b01 R10: dffffc0000000000 R11: ffffed10171e6b02 R12: dffffc0000000000 R13: 1ffff92001fc0ef0 R14: 0000000000000a06 R15: 00000000ffffffff obj_cgroup_uncharge_pages mm/memcontrol.c:3077 [inline] refill_obj_stock+0x421/0x6a0 mm/memcontrol.c:3350 obj_cgroup_charge+0x3d5/0x620 mm/memcontrol.c:3392 memcg_slab_pre_alloc_hook mm/slab.h:501 [inline] slab_pre_alloc_hook+0x2e2/0x300 mm/slab.h:715 slab_alloc_node mm/slub.c:3279 [inline] __kmem_cache_alloc_node+0x4f/0x270 mm/slub.c:3398 kmalloc_trace+0x26/0xe0 mm/slab_common.c:1026 kmalloc include/linux/slab.h:563 [inline] kzalloc include/linux/slab.h:699 [inline] bpf_prog_alloc_no_stats+0xae/0x3a0 kernel/bpf/core.c:96 bpf_prog_alloc+0x1c/0x1b0 kernel/bpf/core.c:130 bpf_prog_load+0x7d4/0x1530 kernel/bpf/syscall.c:2597 __sys_bpf+0x5b8/0x780 kernel/bpf/syscall.c:5032 __do_sys_bpf kernel/bpf/syscall.c:5136 [inline] __se_sys_bpf kernel/bpf/syscall.c:5134 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5134 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f890919e019 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f89073f6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f8909425fa0 RCX: 00007f890919e019 RDX: 0000000000000094 RSI: 0000200000000100 RDI: 0000000000000005 RBP: 00007f890923500c R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f8909426038 R14: 00007f8909425fa0 R15: 00007fff666da9f8