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platform_system_core
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9 Commits

Author SHA1 Message Date
Josh Gao 62f5977d4a libdebuggerd: print the build fingerprint in fallback. 
Bug: http://b/37798209
Test: killall -ABRT media.codec on internal
Change-Id: I0ff1fc5ca1e0bcec2c1b2553d6af7099deebfeda
 2017-05-08 13:15:19 -07:00
Josh Gao 77b00ed429 libdebuggerd: implement fallback register dumping on arm/aarch64. 
Bug: http://b/35439781
Test: killall -ABRT media.codec on internal
Change-Id: I7a23d3bfcf07ad584e677b2ef5fff28436ef0972
 2017-05-08 13:15:19 -07:00
Christopher Ferris f5e568e653 Do not access device maps. 
It's possible that a device map has memory controlled by a single entry
device driver. Thus, you can deadlock if a process is touching that
device memory and we try to unwind it and also touch that device memory.
Simply skip any attempts to step through, or get function names from
device memory maps.

Bug: 36130325

Test: Ran new unit tests, ran bionic unit tests, ran art ThreadStress.
Change-Id: Ibc62d7ec8106c619ee08968f05e04aea55d7cbfa
 2017-03-22 14:55:05 -07:00
Josh Gao 57f58f8e4a crash_dump: fetch process/thread names before dropping privileges. 
Processes that don't have dumpable set to 1 cannot have their
process/thread names read by processes that don't have all of their
capabilities. Fetch these names in crash_dump before dropping
privileges.

Bug: http://b/36237221
Test: debuggerd_test
Test: debuggerd -b `pidof android.hardware.bluetooth@1.0-service`
Change-Id: I174769e7b3c1ea9f11f9c8cbdff83028a4225783
 2017-03-15 23:30:14 -07:00
Josh Gao e1aa0ca58a debuggerd_handler: implement missing fallback functionality. 
Allow the fallback implementation to dump traces and create tombstones
in seccomped processes.

Bug: http://b/35858739
Test: debuggerd -b `pidof media.codec`; killall -ABRT media.codec
Change-Id: I381b283de39a66d8900f1c320d32497d6f2b4ec4
 2017-03-09 11:26:05 -08:00
Elliott Hughes 12b7129406 Small debuggerd improvements. 
Include the ABI in seccomp causes.

Slightly improved command-line usage information.

Fix crasher for seccomp failures.

Bug: N/A
Test: crasher
Change-Id: Ie419ecfe72ee4f5ccf49c927be18350a58a66a90
 2017-03-02 19:01:20 -08:00
Josh Gao e73c932373 libdebuggerd_handler: in-process crash dumping for seccomped processes. 
Do an in-process unwind for processes that have PR_SET_NO_NEW_PRIVS
enabled.

Bug: http://b/34684590
Test: debuggerd_test, killall -ABRT media.codec
Change-Id: I62562ec2c419d6643970100ab1cc0288982a1eed
 2017-02-15 17:03:44 -08:00
Elliott Hughes 0ba535976f Better seccomp/kuser_helper diagnostics from debuggerd. 
Also switch to Android.bp for crasher.

Bug: http://b/34629282 (seccomp)
Bug: http://b/34705831 (seccomp)
Bug: http://b/34884086 (kuser_helpers)
Test: manual
Change-Id: I8ee79c635518faeba751742919af69a505b5e3e1
 2017-02-01 18:43:03 -08:00
Josh Gao cbe70cb0a8 debuggerd: advance our amazing bet. 
Remove debuggerd in favor of a helper process that gets execed by
crashing processes.

Bug: http://b/30705528
Test: debuggerd_test
Change-Id: I9906c69473989cbf7fe5ea6cccf9a9c563d75906
 2017-01-17 13:57:57 -08:00