[v6.1] INFO: rcu detected stall in sys_clone3 (3)

Hello,

syzbot found the following issue on:

HEAD commit: e526b12bf916 Linux 6.1.111
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=163d52a9980000
kernel config: https://syzkaller.appspot.com/x/.config?x=7418080a6f941760
dashboard link: https://syzkaller.appspot.com/bug?extid=f9057903a3564e358b29
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm64

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/1729a6745b21/disk-e526b12b.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/f358663fa696/vmlinux-e526b12b.xz
kernel image: https://storage.googleapis.com/syzbot-assets/9b39a7b8f250/Image-e526b12b.gz.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: [email protected]

rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P6243
(detected by 0, t=10502 jiffies, g=16325, q=1837 ncpus=2)
task:syz.2.578 state:R running task stack:0 pid:6243 ppid:5726 flags:0x0000000d
Call trace:
dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
sched_show_task+0x438/0x570 kernel/sched/core.c:8942
rcu_print_detail_task_stall_rnp kernel/rcu/tree_stall.h:261 [inline]
print_other_cpu_stall+0x1ab8/0x22e0 kernel/rcu/tree_stall.h:606
check_cpu_stall kernel/rcu/tree_stall.h:778 [inline]
rcu_pending kernel/rcu/tree.c:3891 [inline]
rcu_sched_clock_irq+0x195c/0x1c54 kernel/rcu/tree.c:2394
update_process_times+0x15c/0x1f4 kernel/time/timer.c:1869
tick_sched_handle kernel/time/tick-sched.c:254 [inline]
tick_sched_timer+0x340/0x4f8 kernel/time/tick-sched.c:1501
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x484/0xdc0 kernel/time/hrtimer.c:1753
hrtimer_interrupt+0x2c0/0xb64 kernel/time/hrtimer.c:1815
timer_handler drivers/clocksource/arm_arch_timer.c:655 [inline]
arch_timer_handler_virt+0x74/0x88 drivers/clocksource/arm_arch_timer.c:666
handle_percpu_devid_irq+0x174/0x354 kernel/irq/chip.c:930
generic_handle_irq_desc include/linux/irqdesc.h:158 [inline]
handle_irq_desc kernel/irq/irqdesc.c:652 [inline]
generic_handle_domain_irq+0x7c/0xc4 kernel/irq/irqdesc.c:708
__gic_handle_irq drivers/irqchip/irq-gic-v3.c:737 [inline]
__gic_handle_irq_from_irqson drivers/irqchip/irq-gic-v3.c:788 [inline]
gic_handle_irq+0x70/0x1e4 drivers/irqchip/irq-gic-v3.c:832
call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:893
do_interrupt_handler+0xd4/0x138 arch/arm64/kernel/entry-common.c:274
__el1_irq arch/arm64/kernel/entry-common.c:471 [inline]
el1_interrupt+0x34/0x68 arch/arm64/kernel/entry-common.c:486
el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491
el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581
arch_local_irq_restore arch/arm64/include/asm/irqflags.h:122 [inline]
lock_release+0x528/0xa50 kernel/locking/lockdep.c:5685
rcu_lock_release+0x2c/0x38 include/linux/rcupdate.h:355
rcu_read_unlock include/linux/rcupdate.h:824 [inline]
xa_find+0x318/0x3c8 lib/xarray.c:2026
devlinks_xa_find_get+0xfc/0x2dc net/devlink/leftover.c:300
devlinks_xa_find_get_first net/devlink/leftover.c:328 [inline]
devlink_pernet_pre_exit+0xc8/0x2fc net/devlink/leftover.c:12518
ops_pre_exit_list net/core/net_namespace.c:162 [inline]
setup_net+0x68c/0xaac net/core/net_namespace.c:352
copy_net_ns+0x2f0/0x58c net/core/net_namespace.c:481
create_new_namespaces+0x344/0x614 kernel/nsproxy.c:110
copy_namespaces+0x354/0x3bc kernel/nsproxy.c:178
copy_process+0x186c/0x38d0 kernel/fork.c:2270
kernel_clone+0x1d8/0x98c kernel/fork.c:2682
__do_sys_clone3 kernel/fork.c:2981 [inline]
__se_sys_clone3 kernel/fork.c:2965 [inline]
__arm64_sys_clone3+0x358/0x3a0 kernel/fork.c:2965
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204
el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585


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Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.