Memory tagging detected an error in Signal

[MatejKovacic]

Guidelines

• I have searched searched open and closed issues for duplicates
• I am submitting a bug report for existing functionality that does not work as intended
• This isn't a feature request or a discussion topic

Bug description

I am using fully updated GrapheneOS on Pixel 8a and got notification: "Memory tagging detected an error in Signal". I have memory tagging logs, but it is possible they contain personal info (crypto material), so my question is how to share this securely?

Screenshots

No response

Device

Pixel 8a

Android version

GrapheneOS / Android 16

Signal version

7.47.2

Link to debug log

https://debuglogs.org/android/7.47.2/70130e3cab0369f4333b585f695b5a6d6691d0c2647b1e73c2ccfdab9c0115e5

[MatejKovacic]

Additional info I can share publicly:

type: crash
flags: dev options enabled
package: org.thoughtcrime.securesms:155900, targetSdk 34
osVersion: google/akita/akita:16/BP2A.250705.008/2025070800:user/release-keys
uid: 10255 (u:r:untrusted_app:s0:c255,c256,c512,c768)
cmdline: org.thoughtcrime.securesms
processUptime: 3166s

signal: 11 (SIGSEGV), code 9 (SEGV_MTESERR), faultAddr a00db0cd1f9e0e0
threadName: network_thread
MTE: enabled

backtrace:
    /data/app/~~bqAvmQ8z9j3OFD6QbrQjPA==/org.thoughtcrime.securesms-IE15gGGIe1tjSNcH-LSjbQ==/split_config.arm64_v8a.apk!libringrtc_rffi.so (pc 6fd61c)
    /data/app/~~bqAvmQ8z9j3OFD6QbrQjPA==/org.thoughtcrime.securesms-IE15gGGIe1tjSNcH-LSjbQ==/split_config.arm64_v8a.apk!libringrtc_rffi.so (pc 6fcfe8)
    /data/app/~~bqAvmQ8z9j3OFD6QbrQjPA==/org.thoughtcrime.securesms-IE15gGGIe1tjSNcH-LSjbQ==/split_config.arm64_v8a.apk!libringrtc_rffi.so (pc 6fc8f0)
    /data/app/~~bqAvmQ8z9j3OFD6QbrQjPA==/org.thoughtcrime.securesms-IE15gGGIe1tjSNcH-LSjbQ==/split_config.arm64_v8a.apk!libringrtc_rffi.so (pc 2f03bc)
    /data/app/~~bqAvmQ8z9j3OFD6QbrQjPA==/org.thoughtcrime.securesms-IE15gGGIe1tjSNcH-LSjbQ==/split_config.arm64_v8a.apk!libringrtc_rffi.so (pc 2f1840)
    /apex/com.android.runtime/lib64/bionic/libc.so (__pthread_start(void*)+180, pc 8e254)
    /apex/com.android.runtime/lib64/bionic/libc.so (__start_thread+68, pc 7f9f4)