[Magisk] wzhy:
I have uninstall v14.0 and then install v15.0, also has this problem! (Even if I restore the stock kernel and do a fresh install)

here is logcat:

07-03 14:56:15.119 495 495 I Magisk : * Creating /sbin overlay
07-03 14:56:15.121 495 495 E Magisk : mount (null)->/ failed with 16: Device or resource busy
07-03 14:56:15.121 495 495 I Magisk : * Mounting mirrors
07-03 14:56:15.122 495 495 I Magisk : mount: /sbin/.core/mirror/system
07-03 14:56:15.122 495 495 I Magisk : link: /sbin/.core/mirror/vendor
07-03 14:56:15.122 495 495 I Magisk : bind_mount: /sbin/.core/mirror/bin
07-03 14:56:15.122 495 495 I Magisk : * Setting up internal busybox
07-03 14:56:15.133 495 495 I Magisk : Magisk v15.0(1500) daemon started
07-03 14:56:15.135 495 503 I Magisk : ** post-fs mode running
07-03 14:56:44.424 495 523 I Magisk : ** post-fs-data mode running
07-03 23:56:44.425 495 523 I Magisk : Create /data/adb/magisk.img with size 64M
07-03 23:56:44.449 495 523 I Magisk : * Mounting /data/adb/magisk.img
07-03 23:56:44.605 495 523 I Magisk : * Running post-fs-data.d scripts
07-03 23:56:44.605 495 523 I Magisk : * Running module post-fs-data scripts
07-03 23:56:44.605 495 523 I Magisk : * Loading modules
07-03 23:56:44.605 495 535 I Magisk : * Starting MagiskHide
07-03 23:56:44.605 495 535 I Magisk : hide_utils: Hiding sensitive props
07-03 23:56:44.605 495 535 E Magisk : fopen: /sbin/.core/img/.core/hidelist failed with 2: No such file or directory
07-03 23:56:44.605 495 535 I Magisk : hide_list add: [com.google.android.gms.unstable]
07-03 23:56:44.628 495 535 I Magisk : proc_monitor: init ns=mnt:[4026531840]
12-28 15:29:59.513 495 941 I Magisk : ** late_start service mode running
12-28 15:30:02.028 495 535 I Magisk : proc_monitor: zygote ns=mnt:[4026534242] zygote64 ns=mnt:[4026534243]
12-28 15:30:42.915 495 2458 E Magisk : sqlite3 open failure: unable to open database file
12-28 15:30:57.342 495 3619 E Magisk : sqlite3 open failure: unable to open database file
12-28 15:30:57.610 495 3635 E Magisk : sqlite3 open failure: unable to open database file
12-28 15:30:58.913 495 3731 E Magisk : sqlite3 open failure: unable to open database file
12-28 15:31:05.733 495 3962 E Magisk : sqlite3 open failure: unable to open database file
12-28 15:31:13.799 495 535 I Magisk : proc_monitor: com.google.android.gms.unstable (PID=4449 ns=mnt:[4026534353])
12-28 15:31:13.801 495 535 E Magisk : mount (null)->/ failed with 16: Device or resource busy
12-28 15:31:23.815 495 535 E Magisk : mount (null)->/ failed with 16: Device or resource busy
12-28 15:31:51.961 495 535 I Magisk : proc_monitor: com.google.android.gms.unstable (PID=6812 ns=mnt:[4026534413])
12-28 15:31:51.961 495 535 E Magisk : mount (null)->/ failed with 16: Device or resource busy
12-28 15:32:02.014 495 535 E Magisk : mount (null)->/ failed with 16: Device or resource busy
12-28 15:32:24.380 495 535 I Magisk : proc_monitor: com.google.android.gms.unstable (PID=8324 ns=mnt:[4026534320])
12-28 15:32:24.380 495 535 E Magisk : mount (null)->/ failed with 16: Device or resource busy
12-28 15:32:25.002 495 535 I Magisk : proc_monitor: com.google.android.gms.unstable (PID=8362 ns=mnt:[4026534353])
12-28 15:32:25.002 495 535 E Magisk : mount (null)->/ failed with 16: Device or resource busy
12-28 15:32:35.031 495 535 E Magisk : mount (null)->/ failed with 16: Device or resource busy
12-28 15:32:55.177 495 535 I Magisk : proc_monitor: com.google.android.gms.unstable (PID=9497 ns=mnt:[4026534279])
12-28 15:32:55.178 495 535 E Magisk : mount (null)->/ failed with 16: Device or resource busy
12-28 15:33:05.187 495 535 E Magisk : mount (null)->/ failed with 16: Device or resource busy
12-28 15:33:54.250 495 9773 I Magisk : hide_list add: [com.nintendo.zara]
12-28 15:33:55.227 495 9775 I Magisk : hide_list add: [com.nintendo.zaaa]
12-28 15:34:13.006 495 535 I Magisk : proc_monitor: com.google.android.gms.unstable (PID=9812 ns=mnt:[4026534307])
12-28 15:34:13.006 495 535 E Magisk : mount (null)->/ failed with 16: Device or resource busy
12-28 15:34:23.017 495 535 E Magisk : mount (null)->/ failed with 16: Device or resource busy