rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-....: (1 GPs behind) idle=1ed/1/0x4000000000000002 softirq=12251/12252 fqs=2099 (detected by 1, t=10505 jiffies, g=15429, q=1731) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 6046 Comm: syz.1.484 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:331 [inline] RIP: 0010:rcu_is_watching+0x31/0xa0 kernel/rcu/tree.c:1123 Code: 05 4c 9f 9d 7e e8 4f 68 57 08 89 c3 83 f8 08 73 5c 49 bf 00 00 00 00 00 fc ff df 4c 8d 34 dd 20 08 e3 8b 4c 89 f0 48 c1 e8 03 <42> 80 3c 38 00 74 08 4c 89 f7 e8 70 5d 59 00 48 c7 c3 08 b3 03 00 RSP: 0018:ffffc90000007a08 EFLAGS: 00000802 RAX: 1ffffffff17c6104 RBX: 0000000000000000 RCX: 75774e0e75192500 RDX: 0000000000000000 RSI: ffffffff8a79f7e0 RDI: ffffffff8a79f7a0 RBP: 0000000000000000 R08: ffffffff8d89dc2f R09: 1ffffffff1b13b85 R10: dffffc0000000000 R11: fffffbfff1b13b86 R12: 0000000000000000 R13: 0000000000000000 R14: ffffffff8be30820 R15: dffffc0000000000 FS: 00007eff9a8986c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd050cb2000 CR3: 00000000228f3000 CR4: 00000000003506f0 Call Trace: trace_irq_work_exit arch/x86/include/asm/trace/irq_vectors.h:64 [inline] __sysvec_irq_work+0xcf/0x240 arch/x86/kernel/irq_work.c:23 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline] sysvec_irq_work+0x4a/0xc0 arch/x86/kernel/irq_work.c:17 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713 RIP: 0010:rcu_read_unlock_special+0x7f/0x4a0 kernel/rcu/tree_plugin.h:674 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 e2 f0 9c 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08 RSP: 0018:ffffc90000007b00 EFLAGS: 00000206 RAX: 75774e0e75192500 RBX: 1ffff92000000f64 RCX: 75774e0e75192500 RDX: dffffc0000000000 RSI: ffffffff8a2b2780 RDI: ffffffff8a79f800 RBP: ffffc90000007bd8 R08: ffff8880b903b30b R09: 1ffff11017207661 R10: dffffc0000000000 R11: ffffed1017207662 R12: ffffffff8c322f00 R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422 rcu_read_unlock include/linux/rcupdate.h:772 [inline] ieee80211_iterate_active_interfaces_atomic+0x132/0x140 net/mac80211/util.c:831 mac80211_hwsim_beacon+0x9b/0x180 drivers/net/wireless/mac80211_hwsim.c:1865 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x4eb/0xb70 kernel/time/hrtimer.c:1749 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766 handle_softirqs+0x339/0x830 kernel/softirq.c:576 __do_softirq kernel/softirq.c:610 [inline] invoke_softirq kernel/softirq.c:450 [inline] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:finish_lock_switch+0x134/0x280 kernel/sched/core.c:4804 Code: be ff ff ff ff e8 6c c1 67 08 85 c0 74 4a 4d 85 ff 75 66 0f 1f 44 00 00 48 89 df e8 16 2d 71 08 e8 21 e4 2a 00 fb 48 83 c4 08 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 48 89 df e8 c9 09 fe ff 43 80 3c RSP: 0018:ffffc9000320f428 EFLAGS: 00000286 RAX: 75774e0e75192500 RBX: ffff8880b903a340 RCX: 75774e0e75192500 RDX: dffffc0000000000 RSI: ffffffff8a2b2780 RDI: ffffffff8a79f800 RBP: 1ffff11017207613 R08: ffff8880b903b30b R09: 1ffff11017207661 R10: dffffc0000000000 R11: ffffed1017207662 R12: 1ffff110172075c1 R13: dffffc0000000000 R14: ffff8880b903ae08 R15: 0000000000000000 finish_task_switch+0x12f/0x640 kernel/sched/core.c:4921 context_switch kernel/sched/core.c:5052 [inline] __schedule+0x11f7/0x43c0 kernel/sched/core.c:6395 preempt_schedule_irq+0xbb/0x160 kernel/sched/core.c:6799 irqentry_exit+0x63/0x70 kernel/entry/common.c:432 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:refill_stock+0x344/0x540 mm/memcontrol.c:2283 Code: 00 00 9c 8f 44 24 60 f7 44 24 60 00 02 00 00 41 c6 44 1e 04 f8 75 46 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <49> c7 04 1e 00 00 00 00 41 c7 44 1e 08 00 00 00 00 65 48 8b 04 25 RSP: 0018:ffffc9000320f800 EFLAGS: 00000206 RAX: 75774e0e75192500 RBX: dffffc0000000000 RCX: 75774e0e75192500 RDX: dffffc0000000000 RSI: ffffffff8a2b2780 RDI: ffffffff8a79f800 RBP: ffffc9000320f8f0 R08: ffff8880b903b30b R09: 1ffff11017207661 R10: dffffc0000000000 R11: ffffed1017207662 R12: 0000000000000020 R13: ffff8880b9036498 R14: 1ffff92000641f08 R15: 0000000000000a02 obj_cgroup_uncharge_pages mm/memcontrol.c:2996 [inline] refill_obj_stock+0x25c/0x470 mm/memcontrol.c:3259 obj_cgroup_charge+0x1c3/0x320 mm/memcontrol.c:3301 memcg_slab_pre_alloc_hook mm/slab.h:287 [inline] slab_pre_alloc_hook+0x9f/0xc0 mm/slab.h:497 slab_alloc_node mm/slub.c:3139 [inline] slab_alloc mm/slub.c:3233 [inline] kmem_cache_alloc+0x3d/0x290 mm/slub.c:3238 __d_alloc+0x2a/0x6f0 fs/dcache.c:1749 d_alloc_pseudo+0x19/0x70 fs/dcache.c:1880 alloc_file_pseudo+0xe0/0x200 fs/file_table.c:256 __anon_inode_getfile fs/anon_inodes.c:109 [inline] __anon_inode_getfd+0x26b/0x3d0 fs/anon_inodes.c:165 map_create+0x1a91/0x2350 kernel/bpf/syscall.c:946 __sys_bpf+0x30a/0x6f0 kernel/bpf/syscall.c:4639 __do_sys_bpf kernel/bpf/syscall.c:4761 [inline] __se_sys_bpf kernel/bpf/syscall.c:4759 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4759 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7eff9c63e799 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:00007eff9a898028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007eff9c8b7fa0 RCX: 00007eff9c63e799 RDX: 0000000000000050 RSI: 0000200000000240 RDI: 0000000000000000 RBP: 00007eff9c6d4bd9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007eff9c8b8038 R14: 00007eff9c8b7fa0 R15: 00007ffc5a133d98