rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2673 jiffies s: 110093 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: 21242 Comm: syz.1.4954 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:kasan_addr_to_slab+0x9/0xc0 mm/kasan/common.c:36 Code: 08 75 11 31 c0 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 28 fd 5b 08 00 00 cc cc 00 00 cc cc 53 48 89 fb e8 47 b5 66 ff <84> c0 74 47 48 89 df e8 5b b3 66 ff 48 c1 e8 06 48 83 e0 c0 48 ba RSP: 0018:ffffc90000007538 EFLAGS: 00000046 RAX: 0000000000000001 RBX: ffff8880b8e3b9f0 RCX: 0000000000000100 RDX: ffff88805340da00 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff8e2029ef R09: 1ffffffff1c4053d R10: dffffc0000000000 R11: fffffbfff1c4053e R12: 0000000000000000 R13: dffffc0000000001 R14: ffff8880b8e3b9f0 R15: ffff8880b8e3b9f8 FS: 00007f49e27de6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f814ff8 CR3: 0000000049966000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __kasan_record_aux_stack+0xf/0xc0 mm/kasan/generic.c:471 irq_work_queue_on+0x10f/0x260 kernel/irq_work.c:140 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] __perf_event_output kernel/events/core.c:7741 [inline] perf_event_output_forward+0x271/0x2f0 kernel/events/core.c:7750 __perf_event_overflow+0x448/0x610 kernel/events/core.c:9496 perf_swevent_overflow kernel/events/core.c:9579 [inline] perf_swevent_event+0x315/0x570 kernel/events/core.c:9630 perf_tp_event+0x3e7/0xc30 kernel/events/core.c:10064 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10032 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:variable_ffs arch/x86/include/asm/bitops.h:319 [inline] RIP: 0010:handle_softirqs+0x1c8/0x930 kernel/softirq.c:584 Code: 89 7c 24 44 0f b7 db 48 c7 c7 80 10 8b 8a e8 0f 00 e0 08 65 66 c7 05 65 34 b4 7e 00 00 e8 40 79 39 00 fb 49 c7 c6 c0 a0 80 8c <89> 5c 24 4c b8 ff ff ff ff 0f bc 44 24 4c 41 89 c5 41 ff c5 0f 84 RSP: 0018:ffffc90000007e00 EFLAGS: 00000286 RAX: 1e5f1606ace78e00 RBX: 0000000000000200 RCX: 1e5f1606ace78e00 RDX: dffffc0000000000 RSI: ffffffff8a8c1aa0 RDI: ffffffff8adf2060 RBP: ffffc90000007f30 R08: ffffffff90aff36f R09: 1ffffffff215fe6d R10: dffffc0000000000 R11: fffffbfff215fe6e R12: dffffc0000000000 R13: 0000000000000000 R14: ffffffff8c80a0c0 R15: 000000000000000a __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:rcu_read_unlock_special+0x1/0x510 kernel/rcu/tree_plugin.h:630 Code: 45 66 00 eb b0 44 89 f1 80 e1 07 80 c1 03 38 c1 7c 94 49 89 fd 4c 89 f7 e8 fc 44 66 00 4c 89 ef eb 84 0f 1f 80 00 00 00 00 55 <48> 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec c0 00 00 RSP: 0018:ffffc90003f479e8 EFLAGS: 00000206 RAX: 0000000000000000 RBX: ffff88805340de3c RCX: 1e5f1606ace78e00 RDX: 0000000000000003 RSI: ffffffff8adf2040 RDI: ffff88805340da00 RBP: 1ffff11004c5ea32 R08: ffffffff8e2029ef R09: 1ffffffff1c4053d R10: dffffc0000000000 R11: fffffbfff1c4053e R12: 1ffff1100a681bc7 R13: dffffc0000000000 R14: ffff88805340de40 R15: dffffc0000000000 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426 rcu_read_unlock include/linux/rcupdate.h:823 [inline] get_mem_cgroup_from_objcg+0x12d/0x150 include/linux/memcontrol.h:525 obj_cgroup_charge_pages mm/memcontrol.c:3097 [inline] obj_cgroup_charge+0x358/0x620 mm/memcontrol.c:3390 memcg_slab_pre_alloc_hook mm/slab.h:501 [inline] slab_pre_alloc_hook+0x2e7/0x310 mm/slab.h:715 slab_alloc_node mm/slub.c:3279 [inline] __kmem_cache_alloc_node+0x4f/0x260 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+0xb2/0x3a0 kernel/bpf/core.c:96 bpf_prog_alloc+0x1c/0x1b0 kernel/bpf/core.c:130 __get_filter+0xfb/0x410 net/core/filter.c:1506 sk_attach_filter+0x20/0x140 net/core/filter.c:1541 tun_attach_filter+0x180/0x2a0 drivers/net/tun.c:2946 __tun_chr_ioctl+0x17f7/0x1e60 drivers/net/tun.c:3338 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:856 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: 0033:0x7f49e199ce59 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:00007f49e27de028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f49e1c15fa0 RCX: 00007f49e199ce59 RDX: 0000200000000780 RSI: 00000000401054d5 RDI: 0000000000000008 RBP: 00007f49e1a32d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f49e1c16038 R14: 00007f49e1c15fa0 R15: 00007ffd8101c9e8