Tombstones (especially ones with lots of VMAs) are regularly truncated.
We can at least show the number of VMAs, though, for anyone interested
in knowing whether they got close to the default 64Ki limit.
Bug: http://b/66911122
Test: ran crasher, examined tombstone
Change-Id: I286db66f28f132307d573dbe5164efc969dc6ddc
Currently when searching a mount point from a fstab, it checks whether the
mount point of an fstab entry is the prefix of a given path, and the
next char after the match is either '\0' or '/'.
However, it will always return the fstab entry with mount point
"/vendor" when searching path is "/vendor", "/vendor/abc" or "/vendor/cde"
in the following fstab. Because "/vendor" is the prefix of "/vendor/abc"
and "/vendor/cde", and the next char after the match is '/'.
/dev/block/platform/.../by-name/vendor /vendor ext4 ro wait
/dev/block/platform/.../by-name/abc /vendor/abc ext4 ro wait
/dev/block/platform/.../by-name/cde /vendor/cde ext4 ro wait
Fix this by performing an exact match when searching the mount point.
Bug: 63912287
Test: boot sailfish
Change-Id: I504655f5c71790c5d528085de416ce3c30d21fea
Fixes a bug with the signal time of devices using the
modern sync file interface. The bug only affects kernels running
an Android kernel 4.9 and later.
b/63395253
Test: tests/sync_test.cpp
Change-Id: I6fb00bcb8e16a3268c357153edd8e35a44546caa
The static analyzer complains that this memory is leaked regardless of
how I try to work around it (unless we escape the memory by using a
global or something, but...). Basically, as long as there's some sort
of operation on the reinterpret_cast'ed pointer, it complains. If we
remove the bitwise negations, it doesn't. Doing so would presumably
defeat the purpose of this test, though, so add a NOLINT.
Bug: 27101951
Test: mma. No more static analyzer warning for this file.
Change-Id: If9008946a2145d17b8651535141bfd7ec9224739
Apply the same fix from c2e98f63 to intercept_manager.cpp.
Bug: http://b/64543673
Test: debuggerd_test
Change-Id: Ibfb919e059fa62f8336cfc1426d03ef015590136
If a function crashes by jumping into unexecutable code, the old method
could not unwind through that. Add a fallback method to set the pc from
the default return address location.
In addition, add a new finished check for steps. This will provide a method
to indicate that this step is the last step. This prevents cases where
the fallback method might be triggered incorrectly.
Update the libbacktrace code to unwind using the new methodology.
Update the unwind tool to use the new unwind methodology.
Add a new option to crasher that calls through a null function.
Create a new object, Unwinder, that encapsulates the a basic unwind. For now,
libbacktrace will still use the custom code.
Added new unit tests to cover the new cases. Also add a test that
crashes calling a nullptr as a function, and then has call frames in
the signal stack.
Bug: 65842173
Test: Pass all unit tests, verify crasher dumps properly.
Change-Id: Ia18430ab107e9f7bdf0e14a9b74710b1280bd7f4
