rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P4425/1:b..l
(detected by 1, t=10502 jiffies, g=71673, q=145 ncpus=2)
task:udevd state:R running task stack:22152 pid:4425 ppid:1 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0x1409/0x43f0 kernel/sched/core.c:6606
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6918
irqentry_exit+0x57/0x80 kernel/entry/common.c:432
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline]
RIP: 0010:rcu_read_lock_sched_held+0x100/0x130 kernel/rcu/update.c:125
Code: ff ff 7f 75 bc 4c 8d 7c 24 20 4d 89 fc 49 c1 ec 03 43 80 3c 34 00 74 08 4c 89 ff e8 7a cc 6d 00 48 c7 44 24 20 00 00 00 00 9c <8f> 44 24 20 43 80 3c 34 00 74 08 4c 89 ff e8 bd cb 6d 00 45 31 ff
RSP: 0018:ffffc900030ef718 EFLAGS: 00000246
RAX: 0000000080000000 RBX: 1ffff9200061dee4 RCX: 0000000080000000
RDX: dffffc0000000000 RSI: ffffffff8aea80c0 RDI: ffffffff8b382400
RBP: ffffc900030ef7b8 R08: dffffc0000000000 R09: fffffbfff203f631
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200061dee8
R13: ffff888012625b40 R14: dffffc0000000000 R15: ffffc900030ef740
task_css include/linux/cgroup.h:437 [inline]
mem_cgroup_from_task+0x44/0x110 mm/memcontrol.c:987
get_obj_cgroup_from_current+0x147/0x2d0 mm/memcontrol.c:3023
memcg_slab_pre_alloc_hook mm/slab.h:495 [inline]
slab_pre_alloc_hook+0x94/0x280 mm/slab.h:725
slab_alloc_node mm/slub.c:3434 [inline]
slab_alloc mm/slub.c:3460 [inline]
__kmem_cache_alloc_lru mm/slub.c:3467 [inline]
kmem_cache_alloc+0x4e/0x280 mm/slub.c:3476
kmem_cache_zalloc include/linux/slab.h:710 [inline]
__alloc_file+0x26/0x230 fs/file_table.c:138
alloc_empty_file+0x96/0x180 fs/file_table.c:187
path_openat+0xf5/0x2e40 fs/namei.c:3700
do_filp_open+0x234/0x490 fs/namei.c:3741
do_sys_openat2+0x13f/0x500 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x247/0x290 fs/open.c:1337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f4cb552a5a4
RSP: 002b:00007fff8cab35a8 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000560d7090c3c0 RCX: 00007f4cb552a5a4
RDX: 0000000000090800 RSI: 0000560d70903a50 RDI: 00000000ffffff9c
RBP: 0000560d709bef70 R08: 0000000000090800 R09: 0000560d70903a50
R10: 0000000000000000 R11: 0000000000000287 R12: 0000560d70903a50
R13: 00000000000000ff R14: 00007fff8cab3600 R15: 0000000000000000
rcu: rcu_preempt kthread starved for 10531 jiffies! g71673 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:26648 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0x1409/0x43f0 kernel/sched/core.c:6606
schedule+0xc3/0x190 kernel/sched/core.c:6682
schedule_timeout+0x1bd/0x310 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x2c6/0x1010 kernel/rcu/tree.c:1656
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:1855
kthread+0x270/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.2.0-rc8-syzkaller-00083-g3ac88fa4605e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:22 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline]
RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:130 [inline]
RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:113 [inline]
RIP: 0010:acpi_idle_do_entry+0x113/0x350 drivers/acpi/processor_idle.c:570
Code: 0d da f6 48 83 e3 08 0f 85 0b 01 00 00 4c 8d 74 24 20 e8 60 bd e0 f6 0f 1f 44 00 00 e8 66 09 da f6 0f 00 2d af b6 8f 00 fb f4 <4c> 89 f3 48 c1 eb 03 42 80 3c 3b 00 74 08 4c 89 f7 e8 37 43 2f f7
RSP: 0018:ffffc90000177ba0 EFLAGS: 000002d3
RAX: ffffffff8ab1c8ea RBX: 0000000000000000 RCX: ffff88813fe91d40
RDX: 0000000000000000 RSI: ffffffff8aea6f40 RDI: ffffffff8b382400
RBP: ffffc90000177c30 R08: ffffffff8ab1c8cc R09: ffffed1027fd23a9
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200002ef74
R13: ffff888019afe004 R14: ffffc90000177bc0 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e827000 CR3: 0000000034d39000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
acpi_idle_enter+0x356/0x500 drivers/acpi/processor_idle.c:707
cpuidle_enter_state+0x51a/0xf80 drivers/cpuidle/cpuidle.c:239
cpuidle_enter+0x5d/0x90 drivers/cpuidle/cpuidle.c:356
call_cpuidle kernel/sched/idle.c:155 [inline]
cpuidle_idle_call kernel/sched/idle.c:236 [inline]
do_idle+0x3d2/0x680 kernel/sched/idle.c:303
cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:400
start_secondary+0xe8/0xf0 arch/x86/kernel/smpboot.c:264
secondary_startup_64_no_verify+0xcf/0xdb