[Magisk] Guivre:
[MENTION=4667597]Didgeridoohan[/MENTION]

This post from earlier this year is related to my issue (a fix was never posted). I also formerly used SuperSU and unrooted like this person did. Could be related? xdaforums.com/showpost.php?p=75105091&postcount=21941

I've tried creating several logcats but they're all over 512kb for pastebin, and I can't attach files here. Is there a recommended filter I should use for logcat to keep the size down? I do see a "beginning of crash" section in the logcat, if that's what you're looking for:

--------- beginning of crash
01-01 13:20:56.456 +0000 444 445 F libc : Fatal signal 11 (SIGSEGV), code 1, fault addr 0x58 in tid 445 (magisk)
01-01 13:20:56.514 +0000 591 591 F DEBUG : *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
01-01 13:20:56.515 +0000 591 591 F DEBUG : Build fingerprint: 'google/marlin/marlin:7.1.2/NKG47S/4146038:user/release-keys'
01-01 13:20:56.515 +0000 591 591 F DEBUG : Revision: '0'
01-01 13:20:56.515 +0000 591 591 F DEBUG : ABI: 'arm64'
01-01 13:20:56.515 +0000 591 591 F DEBUG : pid: 444, tid: 445, name: magisk >>> magisk_daemon <<<
01-01 13:20:56.515 +0000 591 591 F DEBUG : signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x58
01-01 13:20:56.515 +0000 591 591 F DEBUG : x0 0000000000000000 x1 0000000000000000 x2 0000000000000002 x3 0000000000000400
01-01 13:20:56.515 +0000 591 591 F DEBUG : x4 0000000000000000 x5 0000000000008080 x6 00000075b9a51000 x7 0000000000000000
01-01 13:20:56.515 +0000 591 591 F DEBUG : x8 0000000000000002 x9 0000000000000048 x10 00000075b8bfedc0 x11 0000000000000040
01-01 13:20:56.515 +0000 591 591 F DEBUG : x12 0000000000000018 x13 0000000000000000 x14 0000000000000000 x15 001b3579b8033d3c
01-01 13:20:56.515 +0000 591 591 F DEBUG : x16 00000075b97c3e10 x17 00000075b975b40c x18 00000000ffffffff x19 0000000000000000
01-01 13:20:56.515 +0000 591 591 F DEBUG : x20 0000000000000002 x21 00000000000001bc x22 0000000000000400 x23 0000000000000000
01-01 13:20:56.515 +0000 591 591 F DEBUG : x24 00000075b8bff3d0 x25 87d7fcd606ba3f94 x26 0000005955a8d000 x27 0000005955a77408
01-01 13:20:56.517 +0000 591 591 F DEBUG : x28 0000005955a773f0 x29 00000075b8bff350 x30 0000005955a698a8
01-01 13:20:56.517 +0000 591 591 F DEBUG : sp 00000075b8bff2f0 pc 00000075b975b460 pstate 0000000060000000
01-01 13:20:56.523 +0000 591 591 F DEBUG :
01-01 13:20:56.523 +0000 591 591 F DEBUG : backtrace:
01-01 13:20:56.523 +0000 591 591 F DEBUG : #00 pc 0000000000059460 /system/lib64/libc.so (setvbuf+84)
01-01 13:20:56.523 +0000 591 591 F DEBUG : #01 pc 00000000000058a4 /sbin/magisk (deleted)
01-01 13:20:56.523 +0000 591 591 F DEBUG : #02 pc 0000000000067f90 /system/lib64/libc.so (_ZL15__pthread_startPv+196)
01-01 13:20:56.524 +0000 591 591 F DEBUG : #03 pc 000000000001d980 /system/lib64/libc.so (__start_thread+16)

For what it's worth, I tried uninstalling magisk and kept the magisk manager to see what would happen. The manager loaded fine without issues. Then it prompted me to install magisk via the manager app, which I did (patched the new boot.img that it created). Afterwards, the manager stopped working again, but I did get a magisk installation log:

pastebin.com/zkAQJJkK