INFO: rcu detected stall in vm_area

Kernel	Title	Rank 🛈	Repro	Cause bisect	Count	Last	Reported	Patched	Status
upstream	INFO: rcu detected stall in vm_area_alloc (4) bpf	1			1	470d	470d	0/29	auto-obsoleted due to no activity on 2024/07/03 04:13
linux-6.1	INFO: rcu detected stall in vm_area_alloc	1			1	111d	111d	0/3	auto-obsoleted due to no activity on 2025/07/06 19:56
upstream	INFO: rcu detected stall in vm_area_alloc (3) kernel	1			2	567d	568d	0/29	auto-obsoleted due to no activity on 2024/03/27 19:02
upstream	INFO: rcu detected stall in vm_area_alloc kernel	1			3	2052d	2054d	0/29	closed as invalid on 2019/12/04 14:04
upstream	INFO: rcu detected stall in vm_area_alloc (6) mm	1	syz	error	3	25d	48d	0/29	upstream: reported syz repro on 2025/05/30 07:37
upstream	INFO: rcu detected stall in vm_area_alloc (5) bpf mm	1			18	194d	315d	0/29	auto-obsoleted due to no activity on 2025/04/05 06:19
android-6-12	INFO: rcu detected stall in vm_area_alloc	1			1	7d14h	7d14h	0/1	premoderation: reported on 2025/07/10 16:53

rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P8467 (detected by 0, t=10503 jiffies, g=6597, q=705) syz-executor.0 R running task 27912 8467 8449 0x0000400e Call Trace: <IRQ> sched_show_task+0x40f/0x560 kernel/sched/core.c:5954 rcu_print_detail_task_stall_rnp kernel/rcu/tree_stall.h:190 [inline] print_other_cpu_stall kernel/rcu/tree_stall.h:398 [inline] check_cpu_stall kernel/rcu/tree_stall.h:538 [inline] rcu_pending kernel/rcu/tree.c:2827 [inline] rcu_sched_clock_irq+0x16b1/0x1ad0 kernel/rcu/tree.c:2271 update_process_times+0x12d/0x180 kernel/time/timer.c:1726 tick_sched_handle kernel/time/tick-sched.c:167 [inline] tick_sched_timer+0x263/0x420 kernel/time/tick-sched.c:1310 __run_hrtimer kernel/time/hrtimer.c:1517 [inline] __hrtimer_run_queues+0x403/0x840 kernel/time/hrtimer.c:1579 hrtimer_interrupt+0x38c/0xda0 kernel/time/hrtimer.c:1641 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline] smp_apic_timer_interrupt+0x109/0x280 arch/x86/kernel/apic/apic.c:1135 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 </IRQ> RIP: 0010:free_thread_stack+0x15b/0x590 kernel/fork.c:280 Code: 2e 00 74 08 4c 89 e7 e8 73 94 6a 00 49 8b 1c 24 48 83 c3 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 55 94 6a 00 <48> 8b 3b be fc ff ff ff e8 28 04 00 00 43 80 3c 2e 00 74 08 4c 89 RSP: 0018:ffffc90001fc7968 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 1ffff11013b6bc61 RBX: ffff88809db5e308 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea00024fa840 RBP: ffffc90001fc79a0 R08: dffffc0000000000 R09: fffffbfff124248a R10: fffffbfff124248a R11: 0000000000000000 R12: ffff88808effcda0 R13: dffffc0000000000 R14: 1ffff11011dff9b4 R15: ffff88808f4e55b8 release_task_stack kernel/fork.c:440 [inline] put_task_stack+0xa3/0x130 kernel/fork.c:451 finish_task_switch+0x3f1/0x550 kernel/sched/core.c:3256 context_switch kernel/sched/core.c:3388 [inline] __schedule+0x9a8/0xcc0 kernel/sched/core.c:4081 preempt_schedule_notrace+0xdb/0x120 kernel/sched/core.c:4309 ___preempt_schedule_notrace+0x16/0x27 arch/x86/entry/thunk_64.S:51 rcu_is_watching+0x82/0xa0 kernel/rcu/tree.c:923 rcu_read_unlock include/linux/rcupdate.h:667 [inline] memcg_kmem_get_cache+0x2e8/0x570 mm/memcontrol.c:2807 slab_pre_alloc_hook mm/slab.h:572 [inline] slab_alloc mm/slab.c:3306 [inline] kmem_cache_alloc+0x86/0x2e0 mm/slab.c:3484 vm_area_alloc+0x24/0xf0 kernel/fork.c:351 mmap_region+0xaf2/0x1cb0 mm/mmap.c:1748 do_mmap+0xabb/0x1120 mm/mmap.c:1549 do_mmap_pgoff include/linux/mm.h:2338 [inline] vm_mmap_pgoff+0x13d/0x1d0 mm/util.c:506 ksys_mmap_pgoff+0x104/0x560 mm/mmap.c:1601 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline] __x64_sys_mmap+0x103/0x120 arch/x86/kernel/sys_x86_64.c:91 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45af9a Code: 89 f5 41 54 49 89 fc 55 53 74 35 49 63 e8 48 63 da 4d 89 f9 49 89 e8 4d 63 d6 48 89 da 4c 89 ee 4c 89 e7 b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 4e 5b 5d 41 5c 41 5d 41 5e 41 5f c3 0f 1f 00 RSP: 002b:00007ffef3ca3548 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045af9a RDX: 0000000000000003 RSI: 0000000000021000 RDI: 0000000000000000 RBP: ffffffffffffffff R08: ffffffffffffffff R09: 0000000000000000 R10: 0000000000020022 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000021000 R14: 0000000000020022 R15: 0000000000000000 rcu: rcu_preempt kthread starved for 5105 jiffies! g6597 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 rcu: RCU grace-period kthread stack dump: rcu_preempt R running task 28984 10 2 0x80004000 Call Trace: context_switch kernel/sched/core.c:3385 [inline] __schedule+0x9a0/0xcc0 kernel/sched/core.c:4081 schedule+0x181/0x210 kernel/sched/core.c:4155 schedule_timeout+0x14f/0x240 kernel/time/timer.c:1895 rcu_gp_fqs_loop kernel/rcu/tree.c:1661 [inline] rcu_gp_kthread+0xed8/0x1770 kernel/rcu/tree.c:1821 kthread+0x332/0x350 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352