Now the map output is only sent to the tombstone, and the entire
contents of /prod/$PID/maps is logged, not just 3 lines. Additionally,
crasher now supports "crasher SIGSEGV-non-null", which attempts to write to a
dereferenced function address, causing a SIGSEGV at a non-zero address.
This new crasher mode can be used to test the new maps output.
Bug: 15343662
Change-Id: I796d92e8352a6b9714bbbfe96f3143c56565ef2f
Bionic needs to re-raise various signals, which means the si_code
debuggerd sees has been clobbered. If bionic sends us the original
si_code value, we can use that instead of the one we see when the
ptrace the crashed process' siginfo.
Change-Id: If116a6bc667d55a6fb39b74f96673292af4e4c8c
Note that these were two different functions. The definition was unused,
and the declaration was undefined.
Change-Id: I2edd10a0ab9422cd5252bdb9ccdd726dc5fad531
We should also add a test for heap corruption, but I failed to come up
with a kind of corruption that dlmalloc actually detects (rather than
just crashing accidentally).
Change-Id: I7457e732729635b171ffc44517c3de71f55608e6
Backtracing through eh_frame section is more effective allowing to reuse
ebp register for other purposes within routine. GCC with turned on
optimizations (-O1 and above) implicitly defines -fomit-frame-pointer
anyway. eh_frame sections are generated by default with GCC on any
optimization level.
This change implements remote unwinding (separate process unwinding).
Local unwinding is already implemented through _Unwind_Backtrace call
which is implemented in libgcc.
Change-Id: I1aea1ecd19c21710f9cf5f05dc272fc51b67b7aa
Signed-off-by: Pavel Chupin <pavel.v.chupin@intel.com>
bionic's __stack_chk_fail was preventing debuggerd from dumping
stacks, which was not helpful.
Bug: 2487269
Change-Id: Idba2a274037b960dfb2ac1c21686323268c4b372
So "thread-nostack" runs the "nostack" code on a new thread, and
"thread-abort" runs the "abort" code on a new thread, and so on.
Bug: http://code.google.com/p/android/issues/detail?id=16672
Change-Id: I026a0e43eea147f1a7a74243846954599bcf4238
