Hi, since v5.5-rc1 four equal consecutive traces appeared that seem related to rockchip sound. As i wasn't sure to whom sent the report just added everybody from ./scripts/get_maintainer.pl sound/soc/rockchip/rk3399_gru_sound.c which is the file containg one of the functions in the trace.

By the way, sound works fine. After all traces, there is this message that could also be related: [ 0.625354] da7219 8-001a: Using default DAI clk names: da7219-dai-wclk, da7219-dai-bclk

Regards, Vicente.

[ 0.607955] ------------[ cut here ]------------ [ 0.607967] WARNING: CPU: 3 PID: 1 at __flush_work.isra.47+0x22c/0x248 [ 0.607972] CPU: 3 PID: 1 Comm: swapper/0 Not tainted 5.5.0-rc1 #1 [ 0.607973] Hardware name: Google Kevin (DT) [ 0.607977] pstate: 00000005 (nzcv daif -PAN -UAO) [ 0.607980] pc : __flush_work.isra.47+0x22c/0x248 [ 0.607982] lr : flush_delayed_work+0x34/0x58 [ 0.607984] sp : ffff80001004b950 [ 0.607985] x29: ffff80001004b950 x28: ffff8000109f47c8 [ 0.607989] x27: ffff800010b29890 x26: ffff800010acfdf0 [ 0.607992] x25: 0000000000000003 x24: 0000000000000001 [ 0.607994] x23: ffff0000f2779f00 x22: ffff800010c974f0 [ 0.607997] x21: 0000000000000000 x20: ffff800010c7ca48 [ 0.608000] x19: ffff0000f277f698 x18: 0000000000000014 [ 0.608003] x17: 000000007dad679e x16: 00000000be8a3c7e [ 0.608006] x15: 0000000072509968 x14: 0000000000000000 [ 0.608008] x13: 0000000000000000 x12: 0000000000000000 [ 0.608011] x11: 0000000000000008 x10: 0101010101010101 [ 0.608014] x9 : 0000000000000000 x8 : 7f7f7f7f7f7f7f7f [ 0.608017] x7 : ffff0000f3975800 x6 : 0080808080808080 [ 0.608019] x5 : dead000000000100 x4 : dead000000000122 [ 0.608022] x3 : 0000000000000000 x2 : 0000000000000000 [ 0.608025] x1 : 0000000000000000 x0 : ffff0000f277f698 [ 0.608028] Call trace: [ 0.608031] __flush_work.isra.47+0x22c/0x248 [ 0.608034] flush_delayed_work+0x34/0x58 [ 0.608040] soc_free_pcm_runtime.part.19+0x40/0x60 [ 0.608043] snd_soc_remove_dai_link+0x54/0x60 [ 0.608047] soc_cleanup_card_resources+0x160/0x298 [ 0.608050] snd_soc_bind_card+0x248/0x978 [ 0.608053] snd_soc_register_card+0xf0/0x108 [ 0.608057] devm_snd_soc_register_card+0x40/0x90 [ 0.608061] rockchip_sound_probe+0x210/0x2e8 [ 0.608066] platform_drv_probe+0x50/0xa0 [ 0.608070] really_probe+0xd8/0x2f0 [ 0.608073] driver_probe_device+0x54/0xe8 [ 0.608075] device_driver_attach+0x6c/0x78 [ 0.608078] __driver_attach+0x68/0xe8 [ 0.608082] bus_for_each_dev+0x60/0x98 [ 0.608085] driver_attach+0x20/0x28 [ 0.608088] bus_add_driver+0x170/0x1d0 [ 0.608091] driver_register+0x60/0x110 [ 0.608093] __platform_driver_register+0x44/0x50 [ 0.608098] rockchip_sound_driver_init+0x18/0x20 [ 0.608102] do_one_initcall+0x70/0x148 [ 0.608105] kernel_init_freeable+0x1b4/0x254 [ 0.608109] kernel_init+0x10/0xfc [ 0.608113] ret_from_fork+0x10/0x18 [ 0.608117] ---[ end trace fc1c70d7fb870a47 ]---