History log of /system/core/debuggerd/debuggerd.c
Revision Date Author Comments (<<< Hide modified files) (Show modified files >>>)
e5cc5396e83d12b7ca02ff6096a9950807aa010d 19-Oct-2011 Andy McFadden <fadden@android.com> Add log summary to tombstones

When the tombstones are uploaded to APR, they're truncated at 64KB.
This causes the log data, which is at the end, to be lost if the
process has more than about 12 threads (which many do).

This change adds the last few lines of the log right below the
report for the crashing thread, where we should be guaranteed to
keep it.

Also, clean up trailing newlines on log messages (which end up in
the tombstone), and don't print a "------- log" banner if there
aren't any messages in that log file (e.g. slog).

Also also, don't try to show_nearby_maps unless this is the crashing
thread.

Bug 5471955

Change-Id: Iaa4fd2fafbaeda2f20bb95f202177d7744a91f9d
/system/core/debuggerd/debuggerd.c
41e0cef301637cd1f2daf72953d1230b7fb174b8 14-Oct-2011 Andy McFadden <fadden@android.com> Append log data to tombstones

The Android Problem Report site shows tombstones uploaded from
devices. We can see the native stack traces for every thread,
but sometimes there's a very important bit of information sitting
in the log, and without it we can't analyze the failure.

This change modifies debuggerd so that the log contents for the
crashing process are appended to the tombstone. The format matches
the output of "logcat -v threadtime". Both "system" and "main" logs
are included (but not interleaved -- we're not that fancy).

This feature is only enabled when the "ro.debuggable" system property
is set to 1 (indicating a development device).

Bug 5456676

Change-Id: I3be1df59813ccf1058cec496a906f6d31fbc7b04
/system/core/debuggerd/debuggerd.c
136dcc5ce628a1ba600a6818e5cb24d5f15eb016 23-Sep-2011 Andy McFadden <fadden@android.com> Show maps near native fault address

This adds some additional output to native crashes. For example, if
something tried to access a bit of mmap(/dev/zero) memory that had
been mprotect()ed, you might see output like this:

I DEBUG : memory map around addr 4015a00c:
I DEBUG : 40159000-4015a000 /system/lib/libstdc++.so
I DEBUG : 4015a000-40162000 /dev/zero
I DEBUG : b0001000-b0009000 /system/bin/linker

The idea is to see what's in and around the fault address to make it
easier to identify bus errors due to file truncation and segmentation
faults caused by buffer over/underruns.

No output is generated for accesses below 0x1000 (which are likely
NULL pointer dereferences) or for signals that don't set si_addr.

Also, suppress the fault address for signals that don't set si_addr:
I DEBUG : signal 6 (SIGABRT), code 0 (?), fault addr --------

We still print "fault addr" followed by 8 characters for anything
that is parsing the contents. The "address" shown for signals like
SIGABRT was meaningless and possibly confusing.

Bug 5358516

Change-Id: Icae8ef309ea2d89b129f68d30f96b2ca8a69cc6c
/system/core/debuggerd/debuggerd.c
655835be2a0e6d656040f4dd8f7e3e1035734ef7 26-Jul-2011 Andy McFadden <fadden@android.com> Don't stall waiting for target to crash

This modifies debuggerd to sleep-poll while waiting for the target
process to crash, rather than block (potentially forever).

Also, add/fix some error reporting.

Bug 5035703

Change-Id: Id62ab79f53104927f8de684dff1a5734dbdb8390
/system/core/debuggerd/debuggerd.c
44e12eceecd0be8ba832a003733bfc859b2ccd9d 29-Jul-2011 Andy McFadden <fadden@android.com> debuggerd can't handle debuggerd crashes

When a process receives a fatal signal, it connects to debuggerd
and initiates a conversation over a socket. When the crashing
process is debuggerd, the conversation stalls forever, and you
stop getting native crash details.

This resets the signal handlers to SIG_DFL, so that debuggerd
simply crashes and gets restarted.

Bug 5035703

Change-Id: Ie081d710d046f701bca7e7d8ea3e1d24766d9f61
/system/core/debuggerd/debuggerd.c
e2f712303279039310ddb8e59cf7884338c0e40d 18-Mar-2011 Brian Carlstrom <bdc@google.com> Revert "Debuggerd now outputs the offset of libc.so on the device as a separate item."

This reverts commit c031a3b006129ca408eaade325a53a334daee3b2.

Conflicts:

debuggerd/debuggerd.c

Change-Id: Ib37ae793bbffdb4a81837bc51171cc62b12abe7d
/system/core/debuggerd/debuggerd.c
02526d486803de153d03851f4d5f9be7c555e46c 21-Jan-2011 David 'Digit' Turner <digit@google.com> debuggerd: properly unblock signal handler.

This change ensures that debuggered properly releases
the signal handler that invoked it after the PTRACE_ATTACH.

The previous code simply did a close() of the file descriptor,
but for some reason, this didn't always make the read() blocking
the signal handler exit. Instead, the thread would stay blocked
and never fault, preventing the generation of a useful stack
trace.

Change-Id: I6b0579041165a710d74ec1bece113ff7b828aed4
/system/core/debuggerd/debuggerd.c
abf7378f1ebc9012701e84b0796397b0ba630f95 13-Dec-2010 Jean-Baptiste Queru <jbq@google.com> am 44659e90: am d3f59eab: Merge "debuggerd: IA version"

* commit '44659e90fe8df25c71195936eabe0cc9158c18a6':
debuggerd: IA version
44659e90fe8df25c71195936eabe0cc9158c18a6 13-Dec-2010 Jean-Baptiste Queru <jbq@google.com> am d3f59eab: Merge "debuggerd: IA version"

* commit 'd3f59eab07d102b9506978aca9541dd62dcea919':
debuggerd: IA version
5599029c8dacd2c3dc348ac903b35dfa76a93bf0 13-Dec-2010 Jean-Baptiste Queru <jbq@google.com> Manual merge of 144773f9

Change-Id: I0ac3f88ac85bbc604fdc151768da20e86318fb46
144773f9e1371a8d4b848c3136b931d5d0687b38 13-Dec-2010 Jean-Baptiste Queru <jbq@google.com> am e382cc99: Merge "debuggerd: Reorganize to facilitate IA commit"

* commit 'e382cc999e48b3faabea7743ec8cec303b6005ba':
debuggerd: Reorganize to facilitate IA commit
6cc492308712613cd23bee9240b1757428841a2f 14-Oct-2010 Bruce Beare <bruce.j.beare@intel.com> debuggerd: IA version

Change-Id: I0c0d9c2d7e476b8d117aaf505a9480a47c0b5c05
Signed-off-by: Lei Li <lei.l.li@intel.com>
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
/system/core/debuggerd/debuggerd.c
849249064cae9c1bb23b0204b5d35b832567801e 13-Oct-2010 Bruce Beare <bruce.j.beare@intel.com> debuggerd: Reorganize to facilitate IA commit

Change-Id: I22dd02daf617672fc0a8ba7e396017c57f17e26e
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
/system/core/debuggerd/debuggerd.c
503818eb662a9376b5d5d3ed06d7d2516db389ec 11-Oct-2010 Carl Shapiro <cshapiro@google.com> am 5c5ff87d: am 83c6b052: Print out the signal code along with signal number and address.

Merge commit '5c5ff87ded019537bbaf6383618ef2956aaa0407'

* commit '5c5ff87ded019537bbaf6383618ef2956aaa0407':
Print out the signal code along with signal number and address.
5c5ff87ded019537bbaf6383618ef2956aaa0407 10-Oct-2010 Carl Shapiro <cshapiro@google.com> am 83c6b052: Print out the signal code along with signal number and address.

Merge commit '83c6b052918178033875e7ea54ca746cf7303f87' into gingerbread-plus-aosp

* commit '83c6b052918178033875e7ea54ca746cf7303f87':
Print out the signal code along with signal number and address.
83c6b052918178033875e7ea54ca746cf7303f87 09-Oct-2010 Carl Shapiro <cshapiro@google.com> Print out the signal code along with signal number and address.

Change-Id: I60a8b13f706714e80b11bc517101715dfe1c73c1
/system/core/debuggerd/debuggerd.c
c031a3b006129ca408eaade325a53a334daee3b2 27-Aug-2010 Hristo Bojinov <hristo@google.com> Debuggerd now outputs the offset of libc.so on the device as a separate item.

Change-Id: I350c9ddb496a76d1ee897ae84893bf0e86abd45c
/system/core/debuggerd/debuggerd.c
7fdcc435b67ddc82e4bfb68067b8bb96f34ebf77 17-Jul-2010 Mike Dodd <mdodd@google.com> am 89118032: Merge "Fix bug in debuggerd so it can successfully find the exidx section in libraries. This should fix the bug where the exception stack wasn\'t being printed past the PC." into gingerbread

Merge commit '891180320f0b08758d053a8562dfcd601ef846b0' into gingerbread-plus-aosp

* commit '891180320f0b08758d053a8562dfcd601ef846b0':
Fix bug in debuggerd so it can successfully find the exidx section in
6b657472331ddb2cf5286167ff2460047a321be7 14-Jul-2010 Mike Dodd <mdodd@google.com> Fix bug in debuggerd so it can successfully find the exidx section in
libraries. This should fix the bug where the exception stack wasn't
being printed past the PC.

Change-Id: Ia69ebd49606ee34e329ba43c07b325660248e8fa
/system/core/debuggerd/debuggerd.c
75a1d218d82b8a7d6e0196465dc02ca03fc173c6 10-Jun-2010 The Android Open Source Project <initial-contribution@android.com> merge from open-source master

Change-Id: I50b7bc6faa6d0abd4998cae8fc7dda1e8fa49407
ae7b91b68008ab09635a97a18e7d07a35e8404aa 05-Nov-2009 Meng Hu <meng.hu@garmin.com> debuggerd: Show function names in tombstone backtraces

This change enables debuggerd to provide backtraces with function
names in tombstone files and log messages. It does this by reading
the image file that the address is found in, and parsing the dynamic
symbol table to try to extract the symbol corresponding to the given
address.

This works best when "-Wl,-export-dynamic" is added to the LDFLAGS
of each library and executable, because this will cause all symbols
to be added to the dynamic symbol table. If this flag is not present,
it will still work, but it will only be able to identify functions
which are part of the external API of the library/executable.

Change-Id: I618baaff9ed9143b7d1a1f302224e9f21d2b0626
/system/core/debuggerd/debuggerd.c
e951f60e77a986494fafeadf53ba726fe79c498d 09-Mar-2010 Colin Cross <ccross@android.com> Use arch flags instead of TARGET_ARCH_VARIANT, and add support for VFP_D16

Change-Id: I6007ff21076e92b04a17fb030472a9f8842f0315
/system/core/debuggerd/debuggerd.c
2854db8969cd061d83a931769dfaf4e57108d9df 28-Jan-2010 Ben Cheng <bccheng@android.com> Bug fix for pre-NEON platforms and enhancement for JIT debugging.

Use __ARM_NEON__ instead of __VFP_FP__ to detect the need to retrieve FP
registers.

Dump more code around PC and LR to facilitate JIT debugging.
/system/core/debuggerd/debuggerd.c
bdcff7d66ef8f6602e017d03cf4ffa57bac39b92 17-Dec-2009 Ben Cheng <bccheng@google.com> Dump VFP registers and status word when native app crashes.

Bug: 2226399
Caveat: d0/d1 appear to be clobbered by ptrace. It will be tracked by a new bug.
/system/core/debuggerd/debuggerd.c
3bfdcc979da0f857b014318f3df5d95a0f93eb27 01-Dec-2009 Andy McFadden <fadden@android.com> Minor tweaks to debuggerd.

Changed "process has crashed" message:
- say ":5039" instead of ":port" so mouse-paste of command is trivial
- removed trailing spaces, which consume log buffer to little effect
- improved (I hope) the short explanation of what's going on and
what the HOME key does

Fixed typo ("ignorning").
/system/core/debuggerd/debuggerd.c
09e713789e31f640a80af1cddb2fc40cbeb02ad5 28-Sep-2009 Ben Cheng <bccheng@google.com> Print code around PC and LR in the inline log.

8 more lines should provide more crucial information in weird cases.
/system/core/debuggerd/debuggerd.c
dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0 04-Mar-2009 The Android Open Source Project <initial-contribution@android.com> auto import from //depot/cupcake/@135843
/system/core/debuggerd/debuggerd.c
e54eebbf1a908d65ee8cf80bab62821c05666d70 04-Mar-2009 The Android Open Source Project <initial-contribution@android.com> auto import from //depot/cupcake/@135843
/system/core/debuggerd/debuggerd.c
4f6e8d7a00cbeda1e70cc15be9c4af1018bdad53 21-Oct-2008 The Android Open Source Project <initial-contribution@android.com> Initial Contribution
/system/core/debuggerd/debuggerd.c