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* Merge branch 'jb-mr1-release' of ↵Steve Kondik2012-11-186-5/+267
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | https://android.googlesource.com/platform/system/core into mr1 Conflicts: adb/Android.mk adb/usb_vendors.c include/private/android_filesystem_config.h include/system/audio.h include/system/camera.h init/property_service.c libnetutils/ifc_utils.c mkbootimg/mkbootimg.c rootdir/init.rc Change-Id: Ie42f0c14808e9f8cabd24854bfe15b6667955229
| * Dump 256 bytes per chunk pointed by general-purpose registers.Ben Cheng2012-09-241-1/+5
| | | | | | | | | | Bug: 7216522 Change-Id: Iddcec8399b00ad411be6863dd866a3f74377ba03
| * Print the revision number in the tombstone file.Ben Cheng2012-09-191-0/+10
| | | | | | | | | | Bug: 7168261 Change-Id: Icb412760d018e4bbb1a5d742ed7d484d5cf6b470
| * [MIPS] debuggerd and libcorkscrew supportChris Dearman2012-08-105-2/+235
| | | | | | | | Change-Id: I5a241dc2e470148be0ad2c138e31f1aba5ab8812
| * restorecon tombstone directory.rpcraig2012-07-192-0/+17
| | | | | | | | | | | | | | | | Restore the security contexts of tombstone directory when initially created. Change-Id: I25b53730991576eccb62ca57050decd584acc639 Signed-off-by: rpcraig <rpcraig@tycho.ncsc.mil>
| * am 9cec175c: Remove a stray newline in the backtrace output.Jeff Brown2012-06-081-1/+1
| |\ | | | | | | | | | | | | * commit '9cec175c66100d9edbb1054f3f2977a5c3f80af2': Remove a stray newline in the backtrace output.
| * \ resolved conflicts for merge of 053b8654 to jb-dev-plus-aospJeff Brown2012-06-0811-890/+1170
| |\ \ | | | | | | | | | | | | Change-Id: Idfef8c26b7a9e1a1a202e21dc5d34022bbaa92cc
| * | | Fix buildJean-Baptiste Queru2012-05-161-2/+0
| | | | | | | | | | | | | | | | Change-Id: Ie2af6aab7e236c31bb7a607659813218ef9c5400
* | | | debuggerd: Extend condition for exclusion of the fconstd instructionArne Coucheron2012-07-101-0/+5
| |_|/ |/| | | | | | | | | | | | | | | | | | | | The fconstd instruction only exists in ARM cores with VFPv3 or later. Currently all supported ARMv6 targets do not have VFPv3 or later, so let's just extend based on this trend. Change-Id: Icbbaadb69564b9bab7b55fdada408247c214f038
* | | Remove a stray newline in the backtrace output.Jeff Brown2012-06-081-1/+1
| |/ |/| | | | | | | Bug: 6615693 Change-Id: I1ac1746286afb77c3f5c4042c4592333ebb08a51
* | Enhance native stack dumps.Jeff Brown2012-06-0811-892/+1172
|/ | | | | | | | | | | | | | | | | | | | | | | | | Provides a new mechanism for dumpstate (while running as root) to request that debuggerd dump the stacks of native processes that we care about in bug reports. In this mode, the backtrace is formatted to look similar to a Dalvik backtrace. Moved the tombstone generating code into a separate file to make it easier to maintain. Fixed a bug where sometimes the stack traces would be incomplete because we were not waiting for each thread to stop after issuing PTRACE_ATTACH, only the main thread. So sometimes we were missing traces for some threads. Refactored the logging code to prevent accidentally writing data to logcat when explicitly dumping a tombstone or backtrace from the console. Only root or system server can request to dump backtraces but only root can dump tombstones. Bug: 6615693 Change-Id: Ib3edcc16f9f3a687e414e3f2d250d9500566123b
* Reduce suicidal tendenciesAndy McFadden2012-03-081-2/+12
| | | | | | | | | | | | | | | | | | Some changes to debuggerd: (1) Send a SIGSTOP to the target process before doing any of the PTRACE_ATTACH work. This causes the threads that weren't hit by the signal to stop moving, which seems to get rid of the "ptrace detach failed: No such process" problems that result in missed stack traces and debuggerd self-immolation. (2) SIGPIPE was in the list of "interesting" signals caught by debugger_signal_handler(), but debuggerd didn't recognize it, and you'd get "unexpected signal 13" complaints. It's now in the list. (3) Fixed a bit-rotted XLOG. Change-Id: I33297ea6b09ce450671c07dc25846f684afbf480
* Improve backtrace formatting.Jeff Brown2011-11-221-14/+19
| | | | | | | | | | | | | | | | | | | | Show the symbol offset, when available. Centralized formatting of native stack traces in libcorkscrew. It's handy for automated tools if all stacks look the same. Since we already made them all look them same, we might as well do the formatting in just one place. Do not strip the Thumb bit on ARM. This fixes an off-by-one issue that could happen when resolving a PC that was at the very beginning of a Thumb function, since the symbol table would have the Thumb bit set but since we stripped the bit from our PC, we would be looking for an address one byte before the one listed in the symbol table. It's also quite useful to see whether a given function is executing in Thumb mode just by glancing at the PC. Change-Id: Icaa29add85ce0bcafe24d5ce2098e138d809e2ab
* Print the tombstone path.Jeff Brown2011-11-081-25/+55
| | | | | | | When explicitly requesting a dump, show the user the path of the tombstone file that was generated. Change-Id: I7fff7dea606872a61687ca087e99f604107b70c4
* Improve stack unwinder robustness.Jeff Brown2011-11-046-24/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Keep track of whether memory maps are readable. Use the information in try_get_word to try to avoid accidentally dereferencing an invalid pointer within the current process. (Note that I haven't ever seen that happen during normal unwinding, but it pays to be a little more careful.) Refactored try_get_word a little to make it easier to pass it the needed state for validation checks by way of a little memory_t struct. Improved how the memory map for the current process is cached. This is important because we need up to date information about readable maps. Use a 5 second cache expiration. Improved the PC -> LR fallback logic in the unwinder so we can eke out an extra frame sometimes. Fixed a bug reading ELF program headers. The phnum & phentsize fields are half-words. We were incorrectly interpreting phnum as a whole word. Used android_atomic_* operations carefully in the unwinder to prevent possible memory races between the dumper and the dumpee. This was highly unlikely (or even impossible due to the presence of other barriers along the way) but the code is clearer now about its invariants. Fixed a bug in debuggerd where the pid was being passed to have its stack dump taken instead of the tid, resulting in short stacks because ptrace couldn't read the data if pid != tid. Did a full sweep to ensure that we use pid / tid correctly everywhere. Ported old code from debuggerd to rewind the program counter back one instruction so that it points to the branch instruction itself instead of the return address. Change-Id: Icc4eb08320052975a4ae7f0f5f0ac9308a2d33d7
* Add support for explicitly dumping native stacks.Jeff Brown2011-10-252-206/+317
| | | | | | | | | | | | | | | | | | | | | | | | | This change modifies debuggerd so that it can be used to grab the native stacks of a process that has hung and not just crashed. Note that only the root user can do this (for now). adb shell debuggerd <tid> Then use logcat to find the tombstone file that was generated which will have the native stacks of all threads in the requested process. The specified thread will be shown first and will also appear in the main log. Also made some minor tweaks to libcorkscrew so that we could handle statically compiled executables in the future if we compiled the library statically. Improved the "wait_for_user_action" function to support volume down as an alternative for devices that do not have home keys. Removed a mess of gotos. Change-Id: Ic149653986b0c2f503c7f0e8b7cb1f3be7c84d1e
* Use libcorkscrew in debuggerd.Jeff Brown2011-10-2215-2111/+543
| | | | Change-Id: I5e3645a39d96c808f87075b49111d0262a19a0c8
* Enable verbose register memory dumpsAndy McFadden2011-10-191-1/+1
| | | | | | | | | | | | Dump some memory at addresses for all registers that look like they might have valid addresses. Previously this was only done for PC and LR. (This is expected to be disabled before ship.) Bug 5484924 Change-Id: I9802eaa396783e1286ae0c53eaf2473892c38a02
* Add log summary to tombstonesAndy McFadden2011-10-182-26/+103
| | | | | | | | | | | | | | | | | | | | | 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
* Enhance debuggerd memory dumpsAndy McFadden2011-10-181-54/+103
| | | | | | | | | | | | | | | | | | | | | | | | | This makes two changes: (1) Display ASCII values next to the memory dumps. For example: I DEBUG: 00008ac4 706f6f4c 20676e69 74206425 73656d69 Looping %d times I DEBUG: 00008ad4 7453000a 6e69726f 6f742067 0a702520 ..Storing to %p. I DEBUG: 00008ae4 65642f00 657a2f76 55006f72 6c62616e ./dev/zero.Unabl (The hex values are still displayed as little-endian word values, while the ASCII part is byte oriented.) (2) Optionally display memory dumps for all registers, not just LR and PC, for the crashing thread. This is meant for situations where we crash dereferencing foo->bar and want to see what the memory near "foo" looks like -- could be handy if it got stomped by MUTF-16 text or something recognizable. Change #2 is currently disabled, via a compile-time setting. Bug 5471955 Change-Id: Iacfd01c314055bad81db2f43b7d239f10086fcfb
* Append log data to tombstonesAndy McFadden2011-10-131-0/+103
| | | | | | | | | | | | | | | | | | | 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
* Show maps near native fault addressAndy McFadden2011-10-134-7/+112
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
* Don't stall waiting for target to crashAndy McFadden2011-08-041-4/+28
| | | | | | | | | | | 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
* debuggerd can't handle debuggerd crashesAndy McFadden2011-07-291-0/+12
| | | | | | | | | | | | | | 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
* am 716104b4: am 771f5146: am 4c0b9e3d: Merge "Fix crash reporting on x86 ↵Vladimir Chtchetkine2011-06-091-7/+8
|\ | | | | | | | | | | | | platform." * commit '716104b40df12d367cb5f649b92c6105d5978787': Fix crash reporting on x86 platform.
| * am 771f5146: am 4c0b9e3d: Merge "Fix crash reporting on x86 platform."Vladimir Chtchetkine2011-06-071-7/+8
| |\ | | | | | | | | | | | | * commit '771f5146893aa9bbc451aed78e61b3b18c1bc3b4': Fix crash reporting on x86 platform.
| | * Fix crash reporting on x86 platform.Vladimir Chtchetkine2011-06-071-7/+8
| | | | | | | | | | | | | | | | | | Make sure that crash frame gets printed in one line Change-Id: If097a5a1655b17165b2a3271f0f5ee8ace57686f
| | * am cbb9257a: Merge "Fix debuggerd (native crash dump)."Jean-Baptiste Queru2010-12-141-10/+19
| | |\ | | | | | | | | | | | | | | | | * commit 'cbb9257a872a0f35b0aa1018410ca6025e628c36': Fix debuggerd (native crash dump).
| | | * Fix debuggerd (native crash dump).Mike Dodd2010-12-141-10/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Change 44659e90f (6cc4923087 in AOSP) introduced walking both the symbol table and dynamic symbol table. The problem is that it was dereferencing values whether or not the two tables were both present, which could wind up reading from invalid memory. The read from a bad address would cause debuggerd itself to crash, which isn't handled. Change-Id: Ie936f660018b1980dee5b6ed669588db861f1a79
* | | | Revert "Debuggerd now outputs the offset of libc.so on the device as a ↵Brian Carlstrom2011-03-171-69/+0
|/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | separate item." This reverts commit c031a3b006129ca408eaade325a53a334daee3b2. Conflicts: debuggerd/debuggerd.c Change-Id: Ib37ae793bbffdb4a81837bc51171cc62b12abe7d
* | | Fix overflow prevention code in memory dump.Ben Cheng2011-02-241-19/+23
| | | | | | | | | | | | | | | | | | | | | | | | The delta between start and end pointers in memory dump has to be multiples of 4 or 16. Bug: 3486787 Change-Id: Ie34aa79ffb704ca647805dbc6a16f2c35adf849c
* | | debuggerd: Fix missing include.David 'Digit' Turner2011-02-013-5/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The structure user_vfp is incorrectly defined in bionic/libc/kernel/arch-arm/asm/ptrace.h at the moment, while it should be under bionic/libc/kernel/arch-arm/asm/user.h instead. Before moving its definition in the corresponding source files, we need to fix its users. It happens that debuggerd is the only one for now, so fix this by including <linux/user.h> instead (which will include <asm/user.h> and <asm/ptrace.h>). Also, make the debug output less chatty by specifying all symbols to be listed through XLOG2 instead of XLOG. Change-Id: I16e0fa700945d86efd44ee885a84ad609c0a9b58
* | | remove crasher and vfp-crasher from standard buildsBrian Swetland2011-01-231-2/+2
| | | | | | | | | | | | | | | | | | These are only for debuggerd testing. Change-Id: If2d2ff85e8c182d366cc251e9446ae7fdd094e55
* | | debuggerd: properly unblock signal handler.David 'Digit' Turner2011-01-211-1/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
* | | Prevent rollover when dumping data around PC, SP, etc.Paul Eastham2010-12-141-0/+15
| | | | | | | | | | | | Change-Id: Ifc5f0e8eb5fed191c39f0878869e04b4d4f3b9ca
* | | Fix debuggerd (native crash dump).Mike Dodd2010-12-141-10/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Change 44659e90f (6cc4923087 in AOSP) introduced walking both the symbol table and dynamic symbol table. The problem is that it was dereferencing values whether or not the two tables were both present, which could wind up reading from invalid memory. The read from a bad address would cause debuggerd itself to crash, which isn't handled. Change-Id: Ie936f660018b1980dee5b6ed669588db861f1a79
* | | am 44659e90: am d3f59eab: Merge "debuggerd: IA version"Jean-Baptiste Queru2010-12-1311-24/+285
|\| | | | | | | | | | | | | | * commit '44659e90fe8df25c71195936eabe0cc9158c18a6': debuggerd: IA version
| * | am d3f59eab: Merge "debuggerd: IA version"Jean-Baptiste Queru2010-12-1311-24/+285
| |\| | | | | | | | | | | | | * commit 'd3f59eab07d102b9506978aca9541dd62dcea919': debuggerd: IA version
| | * debuggerd: IA versionBruce Beare2010-11-2911-24/+285
| | | | | | | | | | | | | | | | | | Change-Id: I0c0d9c2d7e476b8d117aaf505a9480a47c0b5c05 Signed-off-by: Lei Li <lei.l.li@intel.com> Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
* | | Manual merge of 144773f9Jean-Baptiste Queru2010-12-1310-212/+296
|\| | | | | | | | | | | Change-Id: I0ac3f88ac85bbc604fdc151768da20e86318fb46
| * | am e382cc99: Merge "debuggerd: Reorganize to facilitate IA commit"Jean-Baptiste Queru2010-12-1310-212/+296
| |\| | | | | | | | | | | | | * commit 'e382cc999e48b3faabea7743ec8cec303b6005ba': debuggerd: Reorganize to facilitate IA commit
| | * debuggerd: Reorganize to facilitate IA commitBruce Beare2010-11-2910-212/+296
| | | | | | | | | | | | | | | Change-Id: I22dd02daf617672fc0a8ba7e396017c57f17e26e Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
* | | am 5c5ff87d: am 83c6b052: Print out the signal code along with signal number ↵Carl Shapiro2010-10-111-2/+48
|\| | | | | | | | | | | | | | | | | | | | | | | | | | and address. Merge commit '5c5ff87ded019537bbaf6383618ef2956aaa0407' * commit '5c5ff87ded019537bbaf6383618ef2956aaa0407': Print out the signal code along with signal number and address.
| * | am 83c6b052: Print out the signal code along with signal number and address.Carl Shapiro2010-10-101-2/+48
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | Merge commit '83c6b052918178033875e7ea54ca746cf7303f87' into gingerbread-plus-aosp * commit '83c6b052918178033875e7ea54ca746cf7303f87': Print out the signal code along with signal number and address.
| | * | Print out the signal code along with signal number and address.Carl Shapiro2010-10-081-2/+48
| | | | | | | | | | | | | | | | Change-Id: I60a8b13f706714e80b11bc517101715dfe1c73c1
* | | | Debuggerd now outputs the offset of libc.so on the device as a separate item.Hristo Bojinov2010-08-271-0/+69
|/ / / | | | | | | | | | Change-Id: I350c9ddb496a76d1ee897ae84893bf0e86abd45c
* | / am 89118032: Merge "Fix bug in debuggerd so it can successfully find the ↵Mike Dodd2010-07-161-1/+1
|\| | | |/ |/| | | | | | | | | | | | | 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
| * Fix bug in debuggerd so it can successfully find the exidx section inMike Dodd2010-07-141-1/+1
| | | | | | | | | | | | | | libraries. This should fix the bug where the exception stack wasn't being printed past the PC. Change-Id: Ia69ebd49606ee34e329ba43c07b325660248e8fa
* | merge from open-source masterThe Android Open Source Project2010-06-106-8/+227
|\ \ | |/ |/| | | Change-Id: I50b7bc6faa6d0abd4998cae8fc7dda1e8fa49407
| * debuggerd: Show function names in tombstone backtracesMeng Hu2010-05-246-8/+227
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
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