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ukanth / afwall

AFWall+ (Android Firewall +) - iptables based firewall for Android

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[ISSUE] Logcat: "AudioFlinger: read failed: framesRead=0" when blocking "Filter Provider" through AFWall+ (phone calls stop working)

grasmanek94 opened this issue · comments

commented

Describe the bug
Phone calls through 3g/LTE stop working (can hear the other side, but other side doesn't hear me) after blocking 'Filter Provider' in AFWall+.
In logcat the following error appears:
"AudioFlinger: read failed: framesRead=0"

Firewall Logs
IPv4rules.log

Smartphone (please complete the following information):

  • Device: Samsung S21+ (Exynos)
  • Android OS: Android 14

Additional context
I have setup whitelist instead of blacklist, and I didn't white list 'Filter Provider'. Maybe add a note to whitelist this on Samsung (and maybe other) devices?

It also doesn't matter if I only give access to LAN, or only to WiFi, or only to Data, as long as AFWall+ is blocking any Filter Provider component, the microphone will fail to work in calls.