Proposal to bring the support for this platform.
We assume the pse36 cpu flag is present for 2MB
large page support present in recent years
in mac line (not to be backported to 10.x anyway).
Recommended better for mac production servers rather
than casual mac books.
PR-URL: https://github.com/nodejs/node/pull/28977
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>
The custom linker script is compatible with GNU ld only.
As such, providin a new expliciting option to redirect to
a different one. lld seems unable to migrate this
large section w/o segfaulting so providing only the
base address anchor for now.
PR-URL: https://github.com/nodejs/node/pull/28938
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
This option is not useful in practice, as mentioned in comments and the
documentation, because the overhead of calling into JS makes it
unreasonably expensive.
PR-URL: https://github.com/nodejs/node/pull/29144
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Before this commit it was using a tagged union to store the one-byte and
two-byte pointers.
From a `sizeof(UnionBytes)` perspective that makes no difference - there
is a hole between the tag and the union - and it makes the code just a
little harder to reason about, IMO.
PR-URL: https://github.com/nodejs/node/pull/29116
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
nghttp2 has updated its limit for outstanding Ping/Settings ACKs
to 1000. This commit allows reverting to the old default of 10000.
The associated CVEs are CVE-2019-9512/CVE-2019-9515.
PR-URL: https://github.com/nodejs/node/pull/29122
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
If we are waiting for the ability to send more output, we should not
process more input. This commit a) makes us send output earlier,
during processing of input, if we accumulate a lot and b) allows
interrupting the call into nghttp2 that processes input data
and resuming it at a later time, if we do find ourselves in a position
where we are waiting to be able to send more output.
This is part of mitigating CVE-2019-9511/CVE-2019-9517.
PR-URL: https://github.com/nodejs/node/pull/29122
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
If a write to the underlying socket finishes asynchronously, that
means that we cannot write any more data at that point without waiting
for it to finish. If this happens, we should also not be producing any
more input.
This is part of mitigating CVE-2019-9511/CVE-2019-9517.
PR-URL: https://github.com/nodejs/node/pull/29122
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Allocating memory upfront comes with overhead, and in particular,
`std::vector` implementations do not necessarily return memory
to the system when one might expect that (e.g. after shrinking the
vector).
PR-URL: https://github.com/nodejs/node/pull/29122
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Ignore headers with 0-length names and track memory for headers
the way we track it for other HTTP/2 session memory too.
This is intended to mitigate CVE-2019-9516.
PR-URL: https://github.com/nodejs/node/pull/29122
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Limit the number of invalid input frames, as they may be pointing
towards a misbehaving peer. The limit is currently set to 1000 but
could be changed or made configurable.
This is intended to mitigate CVE-2019-9514.
PR-URL: https://github.com/nodejs/node/pull/29122
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Limit the number of streams that are rejected upon creation. Since
each such rejection is associated with an `NGHTTP2_ENHANCE_YOUR_CALM`
error that should tell the peer to not open any more streams,
continuing to open streams should be read as a sign of a misbehaving
peer. The limit is currently set to 100 but could be changed or made
configurable.
This is intended to mitigate CVE-2019-9514.
PR-URL: https://github.com/nodejs/node/pull/29122
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Lazily allocate `ArrayBuffer`s for the contents of DATA frames.
Creating `ArrayBuffer`s is, sadly, not a cheap operation with V8.
This is part of performance improvements to mitigate CVE-2019-9513.
Together with the previous commit, these changes improve throughput
in the adversarial case by about 100 %, and there is little more
that we can do besides artificially limiting the rate of incoming
metadata frames (i.e. after this patch, CPU usage is virtually
exclusively in libnghttp2).
PR-URL: https://github.com/nodejs/node/pull/29122
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
For some JS events, it only makes sense to call into JS when there
are listeners for the event in question.
The overhead is noticeable if a lot of these events are emitted during
the lifetime of a session. To reduce this overhead, keep track of
whether any/how many JS listeners are present, and if there are none,
skip calls into JS altogether.
This is part of performance improvements to mitigate CVE-2019-9513.
PR-URL: https://github.com/nodejs/node/pull/29122
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
In the other .cc files in the project, includes are in alphabetical
order, with local files first, and libraries after. However,
inspector_profiler.cc has a library declared in the middle of the import
order, and v8 is the second to last being imported, instead of the last.
So I reordered the imports and testing showed no side effects;
everything passed.
PR-URL: https://github.com/nodejs/node/pull/29073
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Eugene Ostroukhov <eostroukhov@google.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>
Modify the native `SetImmediate()` functions to take generic C++
callables as arguments. This makes passing arguments to the callback
easier, and in particular, it allows passing `std::unique_ptr`s
directly, which in turn makes sure that the data they point to is
deleted if the `Environment` is torn down before the callback can run.
PR-URL: https://github.com/nodejs/node/pull/28704
Reviewed-By: James M Snell <jasnell@gmail.com>
This commit also adds error handling. A THP-enabled build terminated
with an out-of-memory error on a system without /proc because it cast
the -1 from readlink() to size_t (i.e. ULONG_MAX) and then tried to
allocate a string of that size.
PR-URL: https://github.com/nodejs/node/pull/28333
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Ben Noordhuis