Alan, can you help to provide it? thanks

[Note] Use no optimization build to make sure symbols could be parsed correctly: Add "export B2G_NOOPT=1" in .userconfig under b2g root folder. If these are cases that b2g process still alive (using "adb shell b2g-ps" could still see process /system/b2g/b2g), then use gdb to get backtrace information: ./run-gdb.sh attach (gdb) thread apply all bt (and maybe more gdb debug commands...) If these are cases that b2g process no longer exist (B2G process crash), then partners would need a build with coredump enabled or minidump enabled: 1. Use coredump (recommanded) 1-a. Enable coredump in boot.img. attachment 721597 [details] [diff] [review] is an example to enable it in init.rc (ramdisk) 1-b. Build gecko with attachment 721600 [details] [diff] [review] patch. 1-c. Apply attachment 721579 [details] [diff] [review] patch for run-gdb.sh to parse coredump Then, if B2G process crashed, you could pull coredump from device and uses below command to debug: ./run-gdb.sh --coredump [PROGRAM] [COREDUMP FILE] (Then use gdb debug commands...) 2. Use minidump 2-a. Apply attachment 721578 [details] [diff] [review] patch. 2-b. Make symbols: ". setup.sh && make buildsymbols" 2-c. Extract attachment 721602 [details] and put it under b2g root Then, if B2G process crashed, you could pull minidump *.dmp file under /data/b2g/mozilla/Crash\ Reports/pending, and uses below command to parse debug information: ./minidump_stackwalk [dmpfile] objdir-gecko/dist/crashreporter-symbols/ > dmp_result.txt

Thanks Alan

These patches are used to collect detailed information for partner engineering ROM debugging only. Please don't include them in user build/shipping ROM.

Can minidump and coredump both be enabled on b2g system?

(In reply to ying.xu from comment #10) > Can minidump and coredump both be enabled on b2g system? No, you cannot have both enabled.

(In reply to Alan Huang [:ahuang] from comment #11) > (In reply to ying.xu from comment #10) > > Can minidump and coredump both be enabled on b2g system? > > No, you cannot have both enabled. Ying, we'll build two version for monkey test.