On 08/25/2020 04:30 PM, Takashi Iwai wrote:
On Tue, 25 Aug 2020 10:25:03 +0200, Tiezhu Yang wrote:This reverts commit 61eee4a7fc40 ("ALSA: hda: Add support for Loongson 7A1000 controller"). With this patch, there exists the following error on the Loongson LS7A platform: [ 216.639938] rcu: INFO: rcu_preempt self-detected stall on CPU [ 216.645685] rcu: 0-....: (1 GPs behind) idle=d5a/1/0x4000000000000004 softirq=562/563 fqs=16476 [ 216.654565] (t=53772 jiffies g=-463 q=11976) [ 216.658923] NMI backtrace for cpu 0 [ 216.662417] CPU: 0 PID: 68 Comm: kworker/0:2 Not tainted 5.8.0+ #3 [ 216.668587] Hardware name: , BIOS [ 216.672174] Workqueue: events azx_probe_work [snd_hda_intel] [ 216.677829] Stack : 0000000000000000 0000000000000000 ffffffff95004ce0 d786f9efa2288403 [ 216.685848] d786f9efa2288403 0000000000000000 98000001102638c8 ffffffff80cee270 [ 216.693866] 0000000000000000 0000000000000000 0000000000000000 00000000000002b4 [ 216.701883] 206b726f775f6562 0000000000000001 0000000000000000 ffffffff80f30000 [ 216.709902] ffffffff80f30000 ffffffff80d90000 0000000000000000 0000000000000000 [ 216.717919] 0000000000000000 0000000000000000 0000000000000000 ffffffff80d90000 [ 216.725937] ffffffff80d90000 0000000000000007 ffffffff806aff18 0000000000000000 [ 216.733955] ffffffff80f00000 9800000110cc4000 98000001102638c0 ffffffff80d9db80 [ 216.741974] ffffffff8065a740 0000000000000000 0000000000000000 0000000000000000 [ 216.749991] 000073746e657665 0000000000000000 ffffffff80211a64 d786f9efa2288403 [ 216.758009] ... [ 216.760464] Call Trace: [ 216.762920] [<ffffffff80211a64>] show_stack+0x9c/0x130 [ 216.768058] [<ffffffff8065a740>] dump_stack+0xb0/0xf0 [ 216.773110] [<ffffffff80665774>] nmi_cpu_backtrace+0x134/0x140 [ 216.778939] [<ffffffff80665910>] nmi_trigger_cpumask_backtrace+0x190/0x200 [ 216.785805] [<ffffffff802b1abc>] rcu_dump_cpu_stacks+0x12c/0x190 [ 216.791806] [<ffffffff802b08cc>] rcu_sched_clock_irq+0xa2c/0xfc8 [ 216.797808] [<ffffffff802b91d4>] update_process_times+0x2c/0xb8 [ 216.803724] [<ffffffff802cad80>] tick_sched_timer+0x40/0xb8 [ 216.809293] [<ffffffff802ba5f0>] __hrtimer_run_queues+0x118/0x1d0 [ 216.815380] [<ffffffff802bab74>] hrtimer_interrupt+0x12c/0x2d8 [ 216.821208] [<ffffffff8021547c>] c0_compare_interrupt+0x74/0xa0 [ 216.827124] [<ffffffff80296bd0>] __handle_irq_event_percpu+0xa8/0x198 [ 216.833558] [<ffffffff80296cf0>] handle_irq_event_percpu+0x30/0x90 [ 216.839732] [<ffffffff8029d958>] handle_percpu_irq+0x88/0xb8 [ 216.845388] [<ffffffff80296124>] generic_handle_irq+0x44/0x60 [ 216.851131] [<ffffffff80b3cfd0>] do_IRQ+0x18/0x28 [ 216.855838] [<ffffffff8067ace4>] plat_irq_dispatch+0x64/0x100 [ 216.861579] [<ffffffff80209a20>] handle_int+0x140/0x14c [ 216.866802] [<ffffffff802402e8>] irq_exit+0xf8/0x100Could you edit the Oops message to drop unnecessary hex numbers, timestamps, and whatever redundant for readers?
OK, thanks for your reply. I will do it and then send v2 soon. Thanks, Tiezhu
thanks, Takashi
