I recently updated my podcast app to Flutter 3.29.x. When running a release build on Android and streaming audio in the background, the app crashes after a few minutes. Looking at the logs I can see a SIGSEGV fault as shown by this snippet:
04-19 00:36:58.468 15525 15545 F DEBUG : *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
04-19 00:36:58.468 15525 15545 F DEBUG : Build fingerprint: 'google/oriole/oriole:15/BP1A.250305.019/13003188:user/release-keys'
04-19 00:36:58.468 15525 15545 F DEBUG : Revision: 'MP1.0'
04-19 00:36:58.468 15525 15545 F DEBUG : ABI: 'arm64'
04-19 00:36:58.468 15525 15545 F DEBUG : Timestamp: 2025-04-19 00:34:30.261352732+0100
04-19 00:36:58.468 15525 15545 F DEBUG : Process uptime: 7873s
04-19 00:36:58.468 15525 15545 F DEBUG : Cmdline: com.android.chrome:sandboxed_process0:org.chromium.content.app.SandboxedProcessService0:3
04-19 00:36:58.468 15525 15545 F DEBUG : pid: 15525, tid: 15545, name: binder:15525_2 >>> com.android.chrome:sandboxed_process0:org.chromium.content.app.SandboxedProcessService0:3 <<<
04-19 00:36:58.468 15525 15545 F DEBUG : uid: 90003
04-19 00:36:58.468 15525 15545 F DEBUG : tagged_addr_ctrl: 0000000000000001 (PR_TAGGED_ADDR_ENABLE)
04-19 00:36:58.468 15525 15545 F DEBUG : signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr --------
04-19 00:36:58.468 15525 15545 F DEBUG : Cause: null pointer dereference
04-19 00:36:58.468 15525 15545 F DEBUG : x0 0000000000000001 x1 000000680000c008 x2 0000006800014000 x3 000000025135412c
04-19 00:36:58.468 15525 15545 F DEBUG : x4 0000000001c9c380 x5 0000000000001f40 x6 0000000000000000 x7 7f7f7f7f7f7f7f7f
04-19 00:36:58.468 15525 15545 F DEBUG : x8 000000007fffffff x9 8000000000000000 x10 0000000000000000 x11 00000002512f7800
04-19 00:36:58.468 15525 15545 F DEBUG : x12 00000000000026e0 x13 000000007fffffff x14 000000000028361a x15 0000012676ced7ce
04-19 00:36:58.468 15525 15545 F DEBUG : x16 0000000000000001 x17 0000000028b0aaab x18 0000006eb4674000 x19 000000680000c000
04-19 00:36:58.468 15525 15545 F DEBUG : x20 0000000000000000 x21 0000006800008000 x22 0000006ec9401680 x23 000000025135412c
04-19 00:36:58.468 15525 15545 F DEBUG : x24 0000000000000000 x25 0000006ec94017b0 x26 0000006ec94017b4 x27 0000006ec94017b0
04-19 00:36:58.468 15525 15545 F DEBUG : x28 0000006ec94017c0 x29 0000006ec9401640
04-19 00:36:58.468 15525 15545 F DEBUG : lr 0000006e7c994b4c sp 0000006ec9401270 pc 0000006e7c994b58 pst 0000000080001000
04-19 00:36:58.468 15525 15545 F DEBUG : 22 total frames
04-19 00:36:58.468 15525 15545 F DEBUG : backtrace:
04-19 00:36:58.469 15525 15545 F DEBUG : #00 pc 0000000005135b58 /data/app/~~lsmcqog_UWXHbBsrRXYsfA==/com.google.android.trichromelibrary_704910033-ZhAGhek8q6J91EnLqiDrVw==/base.apk!libmonochrome_64.so (offset 0x8dc000) (BuildId: a406330a9e112a5dc18c1374d04a51000725774e)
04-19 00:36:58.469 15525 15545 F DEBUG : #01 pc 0000000003f00d30 /data/app/~~lsmcqog_UWXHbBsrRXYsfA==/com.google.android.trichromelibrary_704910033-ZhAGhek8q6J91EnLqiDrVw==/base.apk!libmonochrome_64.so (offset 0x8dc000) (BuildId: a406330a9e112a5dc18c1374d04a51000725774e)
I’m struggling to debug where this issue lays, especially as it does not happen if I downgrade to 3.27.x. I’ve followed instructions from:
To try and get the symbols from the trace, but it fails with an Unknown engine hash message.
If anyone could point me in the right direction on how to go about working out what has caused the nullpointer dereference and crash, that would be fantastic!
Thank you.