We originally added this functionality in bug 1566855 because we were
seeing a significant amount of orphaned crashes not being submitted.
Notably some of these were early content process startup crashes and
missing them made us unaware of severe issues that would affect our
users. In the meantime we've addressed most of the cases where a crash
would be orphaned. Since the crashes submitted this way have a buildid
that does not match the version of Firefox that actually crashed they
can be confusing during crash triage.
Given the above we can safely remove this functionality. This patch
reverts most of the changes from bug 1566855 but leaves the test
refactorings in place.
Differential Revision: https://phabricator.services.mozilla.com/D78219
Raw Cr.ERROR don't get stack information, same as throwing JS literals instead
of `new Error()`s.
This was done automatically with a new eslint rule that will be introduced in
the next commit. One instance of a raw Cr.ERROR was not replaced since it is
used in a test that specifically checks the preservation of raw Cr values in
XPCJS. The rule will be disabled for that instance.
Differential Revision: https://phabricator.services.mozilla.com/D28073
On Windows content process minidump generation goes through the following
steps:
* The child process exception handler invokes the `filter` callback. This is the
`ChildFPEFilter()` function in nsExceptionHandler.cpp.
* If this callback returns true then the child process sends a request to the
crash generation server living in the main process and then waits.
* The main process generates a minidump in response to this message.
* Once the minidump has been generated the crash generation server calls the
`dump_callback` callback with the minidump filename. This is the
`OnChildProcessDumpRequested()` function in nsExceptionHandler.cpp.
* Once this callback returns the main process signals the child process that
it has finished generating the dump.
* The child process resumes execution in the exception handler and then
terminates.
During this process we send crash annotations via a pipe from the child
process to the main process. The function responsible for this is
`PrepareChildExceptionTimeAnnotations()` in nsExceptionHandler.cpp and it's
called within `ChildFPEFilter()`. Because pipe writes are blocking if we send
enough annotations to fill the pipe buffer then the child process will get
stuck in `ChildFPEFilter()` and never request a dump from the main process. Thus
the content process will never shut down and the main process will never see
that it has crashed, it will only appear indefinitely stuck.
To solve this issue a few changes are necessary:
* The crash annotations are not sent from the `filter` callback, they are sent
from the `minidump` callback which we did not use before. This callback is
executed in the child process **after** signaling the main process.
* This is not enough to prevent the deadlock though, because the content
process will still wait before the parent process has responded before
invoking this new callback. The parent process on the other hand will
generate the minidump and then call `OnChildProcessDumpRequest()` which will
wait to read the annotations sent by the child process. Thus both processes
would be stuck. To solve this other issue we change the order in which the
parent process responds: instead of invoking the `dump_callback` first and
then signaling the child process it does the opposite.
I've also added a new test that covers two separate issues solved by this
patch-set: that we don't deadlock when writing too much data (this issue) and
that we don't fail to send an annotation if it's too large (previously the
shared memory buffer was 16KiB in size so this annotation wouldn't fit).
Differential Revision: https://phabricator.services.mozilla.com/D69877
--HG--
extra : moz-landing-system : lando
Each allocation page is now bracketed by a guard page, and allocations are put
at the end of their page so that bounds violations trigger a crash.
Various operations (realloc(), free(), malloc_usable_size()) now require that
the pointer they are given points to the start of an allocation.
Differential Revision: https://phabricator.services.mozilla.com/D43842
--HG--
rename : toolkit/crashreporter/test/unit_ipc/test_content_phc2.js => toolkit/crashreporter/test/unit_ipc/test_content_phc3.js
extra : moz-landing-system : lando
Gets rid of `NS_NewThread`. Where it was used in testing, I gave the new named threads names relevant to their tests.
Differential Revision: https://phabricator.services.mozilla.com/D62475
--HG--
extra : source : 541b98270c9985c5bd3569ff3ff8bc6c3d3c650a
Gets rid of `NS_NewThread`. Where it was used in testing, I gave the new named threads names relevant to their tests.
Differential Revision: https://phabricator.services.mozilla.com/D62475
--HG--
extra : moz-landing-system : lando
This is generally pretty straightforward, and rewrites nearly all calls. It
skips the ones that it can detect using frame script globals like
`sendAsyncMessage`, though.
Differential Revision: https://phabricator.services.mozilla.com/D53740
--HG--
extra : moz-landing-system : lando
This is generally pretty straightforward, and rewrites nearly all calls. It
skips the ones that it can detect using frame script globals like
`sendAsyncMessage`, though.
Differential Revision: https://phabricator.services.mozilla.com/D53740
--HG--
extra : moz-landing-system : lando
This is generally pretty straightforward, and rewrites nearly all calls. It
skips the ones that it can detect using frame script globals like
`sendAsyncMessage`, though.
Differential Revision: https://phabricator.services.mozilla.com/D53740
--HG--
extra : moz-landing-system : lando
This is generally pretty straightforward, and rewrites nearly all calls. It
skips the ones that it can detect using frame script globals like
`sendAsyncMessage`, though.
Differential Revision: https://phabricator.services.mozilla.com/D53740
--HG--
extra : moz-landing-system : lando
This patch rolls up all the required changes for this purpose. Since the
whole crash reporting flow must understand the new format it's not possible
to land this as separate patches as individually they would be broken. This
patch includes the following changes:
* Changes to the crash reporting machinery to write out annotations as JSON,
these includes changes to the DLL blocklist code that must be run at crash
time.
* Modifications to the crash reporter client so that it can read and
submit the new format; this includes platform-specific changes to the
Breakpad libraries it uses for submitting crashes.
* Modifications to the minidump-analyzer to understand and process the new
format correctly.
* Modifications to the crash manager to understand and process the new format
correctly.
* Modifications to GeckoView's crash handler to understand and submit the
new format correctly.
* Added new tests to cover the new format and modified existing ones to
accomodate the new one.
Differential Revision: https://phabricator.services.mozilla.com/D46848
--HG--
extra : moz-landing-system : lando
This patch rolls up all the required changes for this purpose. Since the
whole crash reporting flow must understand the new format it's not possible
to land this as separate patches as individually they would be broken. This
patch includes the following changes:
* Changes to the crash reporting machinery to write out annotations as JSON,
these includes changes to the DLL blocklist code that must be run at crash
time.
* Modifications to the crash reporter client so that it can read and
submit the new format; this includes platform-specific changes to the
Breakpad libraries it uses for submitting crashes.
* Modifications to the minidump-analyzer to understand and process the new
format correctly.
* Modifications to the crash manager to understand and process the new format
correctly.
* Modifications to GeckoView's crash handler to understand and submit the
new format correctly.
* Added new tests to cover the new format and modified existing ones to
accomodate the new one.
Differential Revision: https://phabricator.services.mozilla.com/D46848
--HG--
extra : moz-landing-system : lando
Currently the PHC code uses char* and uintptr_t in various address
computations. This patch changes it to use uint8_t* instead, which is clearer
than char* and avoids the need for various casts.
Differential Revision: https://phabricator.services.mozilla.com/D43840
--HG--
extra : moz-landing-system : lando
I changed DelegatedQueryInterface and CallMethod to be non-static
methods rather than taking an explicit |self| parameter.
There is already a method nsXPCWrappedJS::CallMethod() with the same
signature, but it is a shim, so I inlined it into the version in
XPCWrappedJSClass.cpp.
I also fixed up a few comments that mention nsXPCWrappedJSClass.
The new comments starting with "We now need to enter the realm" were
written by Boris, and are a little more explicit so they are easier to
understand.
I renamed DebugDump() to DebugDumpInterfaceInfo() to be more
informative.
Differential Revision: https://phabricator.services.mozilla.com/D26422
--HG--
extra : moz-landing-system : lando
I changed DelegatedQueryInterface and CallMethod to be non-static
methods rather than taking an explicit |self| parameter.
I did a tiny bit of cleanup in the nsIXPConnectJSObjectHolder case of
DelegatedQueryInterface().
There is already a method nsXPCWrappedJS::CallMethod() with the same
signature, but it is a shim, so I inlined it into the version in
XPCWrappedJSClass.cpp.
I also fixed up a few comments that mention nsXPCWrappedJSClass.
The new comments starting with "We now need to enter the realm" were
written by Boris, and are a little more explicit so they are easier to
understand.
I renamed DebugDump() to DebugDumpInterfaceInfo() to be more
informative.
Differential Revision: https://phabricator.services.mozilla.com/D26422
--HG--
extra : moz-landing-system : lando
The definitions can't be entirely removed yet because NSS still needs them.
Differential Revision: https://phabricator.services.mozilla.com/D23454
--HG--
extra : moz-landing-system : lando
Gabriele Svelto
Ian Moody
Gijs Kruitbosch
Andreea Pavel
Nicholas Nethercote
Ed Lee
Kristen Wright
Ciure Andrei
David Teller
Arthur Iakab
Kris Maglione
shindli
Noemi Erli
Daniel Varga
Razvan Maries
Anny Gakhokidze
Cosmin Sabou
Victor Porof
Andrew McCreight
Sylvestre Ledru
Csoregi Natalia
Narcis Beleuzu
Mark Banner