I can confirm this issue on an old BananaPi 1 from Lemaker. It began with Kernel 6.6.
After returning to the older 6.1 the stalls disappeared.
Apr 13 23:02:02 eisbaer kernel: rcu: INFO: rcu_sched self-detected stall on CPU
Apr 13 23:02:02 eisbaer kernel: rcu: 0-....: (5249 ticks this GP) idle=56dc/1/0x40000002 softirq=5480265/5480265 fqs=2606
Apr 13 23:02:02 eisbaer kernel: rcu: (t=5250 jiffies g=9317845 q=1167 ncpus=2)
Apr 13 23:02:02 eisbaer kernel: CPU: 0 PID: 27606 Comm: htop Tainted: G C 6.6.16-current-sunxi #1
Apr 13 23:02:02 eisbaer kernel: Hardware name: Allwinner sun7i (A20) Family
Apr 13 23:02:02 eisbaer kernel: PC is at stmmac_get_stats64+0x26/0x128
Apr 13 23:02:02 eisbaer kernel: LR is at 0xc2e6b000
Apr 13 23:02:02 eisbaer kernel: pc : [<c078c5ce>] lr : [<c2e6b000>] psr: 80010033
Apr 13 23:02:02 eisbaer kernel: sp : f1621c68 ip : c2e68000 fp : 00000001
Apr 13 23:02:02 eisbaer kernel: r10: f1621e68 r9 : c2ee3c48 r8 : c2e68000
Apr 13 23:02:02 eisbaer kernel: r7 : 00000000 r6 : 00000001 r5 : 00000000 r4 : 80000000
Apr 13 23:02:02 eisbaer kernel: r3 : 07c697cd r2 : c2e6ae48 r1 : f1621d28 r0 : c2e68000
Apr 13 23:02:02 eisbaer kernel: Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA Thumb Segment none
Apr 13 23:02:02 eisbaer kernel: Control: 50c5387d Table: 46a2c06a DAC: 00000051
Apr 13 23:02:02 eisbaer kernel: stmmac_get_stats64 from dev_get_stats+0x27/0xd0
Apr 13 23:02:02 eisbaer kernel: dev_get_stats from dev_seq_printf_stats+0x21/0x124
Apr 13 23:02:02 eisbaer kernel: dev_seq_printf_stats from dev_seq_show+0x11/0x24
Apr 13 23:02:02 eisbaer kernel: dev_seq_show from seq_read_iter+0x281/0x35c
Apr 13 23:02:02 eisbaer kernel: seq_read_iter from seq_read+0x61/0x84
Apr 13 23:02:02 eisbaer kernel: seq_read from proc_reg_read+0x71/0x90
Apr 13 23:02:02 eisbaer kernel: proc_reg_read from vfs_read+0x75/0x1e4
Apr 13 23:02:02 eisbaer kernel: vfs_read from ksys_read+0x45/0x9c
Apr 13 23:02:02 eisbaer kernel: ksys_read from ret_fast_syscall+0x1/0x5c
Apr 13 23:02:02 eisbaer kernel: Exception stack(0xf1621fa8 to 0xf1621ff0)
Apr 13 23:02:02 eisbaer kernel: 1fa0: 01141aa0 000005e8 00000004 011c7200 00000400 00000001
Apr 13 23:02:02 eisbaer kernel: 1fc0: 01141aa0 000005e8 b6e13888 00000003 0000000a bedcddd4 00000000 00000000
Apr 13 23:02:02 eisbaer kernel: 1fe0: 00000003 bedcdcd0 b6dae2bb b6d27616
