rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P22153/1:b..l
(detected by 0, t=10502 jiffies, g=142293, q=12 ncpus=2)
task:modprobe state:R running task stack:26216 pid:22153 ppid:5866 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6606
preempt_schedule_irq+0x52/0xa0 kernel/sched/core.c:6918
irqentry_exit+0x35/0x80 kernel/entry/common.c:432
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:mas_slot lib/maple_tree.c:840 [inline]
RIP: 0010:mas_validate_parent_slot lib/maple_tree.c:6956 [inline]
RIP: 0010:mt_validate+0x9c2/0x3230 lib/maple_tree.c:7145
Code: c0 0f 85 32 23 00 00 48 8b 04 24 89 df 48 83 c5 08 44 0f b6 a0 e0 c3 88 8b 44 89 e6 e8 57 5f c8 f7 44 39 e3 0f 8d 39 02 00 00 <e8> 19 63 c8 f7 48 89 e8 4c 8b a4 24 b0 00 00 00 48 c1 e8 03 42 80
RSP: 0018:ffffc90015eb7690 EFLAGS: 00000282
RAX: fffffbfff171187c RBX: 0000000000000000 RCX: 0000000000000003
RDX: ffff88802c3c1d40 RSI: ffffffff89b8fe61 RDI: 0000000000000001
RBP: ffff88802e20a050 R08: 0000000000000001 R09: 0000000000000000
R10: 000000000000000a R11: 0000000000094001 R12: 0000000000000003
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88807add1a40
validate_mm_mt+0xa7/0x1b0 mm/mmap.c:295
validate_mm+0xa0/0x270 mm/mmap.c:332
remove_mt mm/mmap.c:2170 [inline]
do_mas_align_munmap+0xf32/0x1260 mm/mmap.c:2447
do_mas_munmap+0x26e/0x2c0 mm/mmap.c:2502
mmap_region+0x21d/0x1dd0 mm/mmap.c:2550
do_mmap+0x831/0xf60 mm/mmap.c:1411
vm_mmap_pgoff+0x1af/0x280 mm/util.c:520
ksys_mmap_pgoff+0x41f/0x5a0 mm/mmap.c:1457
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f137f16f1f2
RSP: 002b:00007ffd11109228 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f137f16f1f2
RDX: 0000000000000003 RSI: 0000000000002000 RDI: 00007f137ee2a000
RBP: 00007f137ee2a000 R08: 0000000000000000 R09: 0000000000002000
R10: 0000000000000812 R11: 0000000000000206 R12: 00007ffd11109240
R13: 00007ffd111092d0 R14: 0000000000000003 R15: 00007f137ee2c000
</TASK>
rcu: rcu_preempt kthread starved for 10437 jiffies! g142293 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
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:28096 pid:16 ppid:2 flags:0x00004000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6606
schedule+0xde/0x1b0 kernel/sched/core.c:6682
schedule_timeout+0x14e/0x2a0 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x190/0x910 kernel/rcu/tree.c:1656
rcu_gp_kthread+0x23a/0x360 kernel/rcu/tree.c:1855
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.2.0-rc5-syzkaller-00221-gab072681eabe #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
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: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+0x1fd/0x2a0 drivers/acpi/processor_idle.c:570
Code: 89 de e8 76 a3 77 f7 84 db 75 ac e8 fd a6 77 f7 e8 38 29 7e f7 eb 0c e8 f1 a6 77 f7 0f 00 2d 4a fd a7 00 e8 e5 a6 77 f7 fb f4 <9c> 5b 81 e3 00 02 00 00 fa 31 ff 48 89 de e8 a0 a3 77 f7 48 85 db
RSP: 0018:ffffffff8c407d30 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffffffff8c4bc940 RSI: ffffffff8a09bb7b RDI: 0000000000000000
RBP: ffff888017cab864 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001
R13: ffff888017cab800 R14: ffff888017cab864 R15: ffff888146609004
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555de7888 CR3: 000000003bf45000 CR4: 0000000000350ef0
Call Trace:
<TASK>
acpi_idle_enter+0x368/0x510 drivers/acpi/processor_idle.c:707
cpuidle_enter_state+0x1af/0xd40 drivers/cpuidle/cpuidle.c:239
cpuidle_enter+0x4e/0xa0 drivers/cpuidle/cpuidle.c:356
call_cpuidle kernel/sched/idle.c:155 [inline]
cpuidle_idle_call kernel/sched/idle.c:236 [inline]
do_idle+0x3f7/0x590 kernel/sched/idle.c:303
cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:400
rest_init+0x16d/0x270 init/main.c:732
arch_call_rest_init+0x13/0x1c init/main.c:894
start_kernel+0x44f/0x470 init/main.c:1148
secondary_startup_64_no_verify+0xce/0xdb
</TASK>