igt@kms_flip@blocking-absolute-wf_vblank@a-edp1 - dmesg-warn - is trying to acquire lock: at: reg_raw_read, but task is already holding lock at: reg_raw_read
https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_507/fi-icl-guc/igt@kms_flip@blocking-absolute-wf_vblank@a-edp1.html#dmesg-warnings318
<4> [272.847820] ============================================
<4> [272.847822] WARNING: possible recursive locking detected
<4> [272.847826] 5.7.0-rc7-gcd02c2938ef1c-drmtip_507+ #1 Tainted: G U
<4> [272.847828] --------------------------------------------
<4> [272.847830] kworker/6:2/210 is trying to acquire lock:
<4> [272.847833] ffff888881a04670 (&codec->regmap_lock){+.+.}-{3:3}, at: reg_raw_read+0x25/0x70 [snd_hda_core]
<4> [272.847848]
but task is already holding lock:
<4> [272.847850] ffff888880f2c670 (&codec->regmap_lock){+.+.}-{3:3}, at: reg_raw_read+0x25/0x70 [snd_hda_core]
<4> [272.847860]
other info that might help us debug this:
<4> [272.847862] Possible unsafe locking scenario:
<4> [272.847864] CPU0
<4> [272.847865] ----
<4> [272.847867] lock(&codec->regmap_lock);
<4> [272.847869] lock(&codec->regmap_lock);
<4> [272.847872]
*** DEADLOCK ***