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diff --git a/build/valgrind/x86_64-pc-linux-gnu.sup b/build/valgrind/x86_64-pc-linux-gnu.sup
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@@ -0,0 +1,1008 @@
+# Full list is tracked through meta bug 793882
+
+####################################
+# Leaks in third party libraries #
+####################################
+
+{
+ Bug 793537
+ Memcheck:Leak
+ ...
+ obj:/usr/lib64/libpango-1.0.so.0.2800.1
+ ...
+}
+{
+ Bug 793598
+ Memcheck:Leak
+ ...
+ obj:/lib64/libdbus-1.so.3.4.0
+ ...
+}
+# Fontconfig is going fancy with its cache structure and that confuses valgrind.
+# https://bugs.freedesktop.org/show_bug.cgi?id=8215
+# https://bugs.freedesktop.org/show_bug.cgi?id=8428
+{
+ Bug 1187649
+ Memcheck:Leak
+ match-leak-kinds: definite
+ fun:realloc
+ fun:FcPatternObjectInsertElt
+ ...
+}
+{
+ Bug 1187649
+ Memcheck:Leak
+ match-leak-kinds: definite
+ fun:malloc
+ fun:FcPatternObjectInsertElt
+ ...
+}
+{
+ Bug 1533462 (comment 9)
+ Memcheck:Leak
+ match-leak-kinds: definite
+ fun:malloc
+ fun:FcNameParseCharSet
+ fun:FcNameConvert
+ fun:FcNameParse
+ ...
+}
+# With older versions of fontconfig (e.g. 2.8.0 on taskcluster systems),
+# there's an uninitialized memory usage and leak when loading app fonts.
+{
+ Bug 1231701
+ Memcheck:Param
+ write(buf)
+ ...
+ fun:FcDirCacheWrite
+ fun:FcDirCacheScan
+ fun:FcConfigAddDirList
+ ...
+}
+{
+ Bug 1231701
+ Memcheck:Leak
+ match-leak-kinds: definite
+ fun:malloc
+ fun:FcDirScanConfig
+ fun:FcDirCacheScan
+ fun:FcConfigAddDirList
+ ...
+}
+{
+ Bug 1231701
+ Memcheck:Leak
+ match-leak-kinds: definite
+ fun:malloc
+ fun:FcDirScanConfig
+ fun:FcDirScanConfig
+ fun:FcDirCacheScan
+ fun:FcConfigAddDirList
+ ...
+}
+{
+ Bug 1231701
+ Memcheck:Leak
+ match-leak-kinds: definite
+ fun:malloc
+ fun:FcDirScanConfig
+ obj:/usr/lib/x86_64-linux-gnu/libfontconfig.so.1.5.0
+ fun:FcDirCacheScan
+ fun:FcConfigAddDirList
+ ...
+}
+# Leaks due to either Gtk+3 or cairo, but Gecko is not directly involved with
+# those cairo interactions. One suspected cause is Gecko not closing the
+# display to work around a bug in old Gtk+3 versions. See also bug 1228724.
+{
+ Bug 1187649
+ Memcheck:Leak
+ match-leak-kinds: definite
+ fun:malloc
+ fun:_cairo_freelist_alloc
+ fun:_cairo_xlib_display_queue_resource
+ fun:_cairo_xlib_surface_finish
+ ...
+}
+# The following leak is deep in Gtk+3, and it doesn't seem we're doing
+# anything wrong on our end with the container objects. This suppression
+# is purposefully verbose so as to avoid catching actual leaks due to
+# Gecko code.
+# Note: valgrind doesn't support more than 24 elements in a suppression stack.
+{
+ Bug 1187649
+ Memcheck:Leak
+ match-leak-kinds: definite
+ fun:malloc
+ fun:g_malloc
+ fun:g_slice_alloc
+ fun:g_list_prepend
+ fun:gtk_combo_box_get_path_for_child
+ fun:gtk_container_get_path_for_child
+ fun:gtk_widget_get_path
+ fun:_gtk_widget_update_path
+ fun:reset_style_recurse
+ fun:gtk_widget_reset_style
+ fun:gtk_widget_set_parent
+ fun:gtk_combo_box_add
+ fun:g_cclosure_marshal_VOID__OBJECTv
+ fun:_g_closure_invoke_va
+ fun:g_signal_emit_valist
+ fun:g_signal_emit
+ fun:gtk_combo_box_constructor
+ fun:g_object_newv
+ fun:g_object_new_valist
+ fun:g_object_new
+ ...
+}
+# set_color() in gtkstyle.c of GTK version 3.4.4 only can leak GdkRGBA
+# allocations when the theme has transparent colors:
+# https://git.gnome.org/browse/gtk+/tree/gtk/deprecated/gtkstyle.c?h=3.4.4#n676
+{
+ Bug 1250704
+ Memcheck:Leak
+ match-leak-kinds: definite
+ fun:malloc
+ fun:g_malloc
+ fun:g_slice_alloc
+ fun:g_slice_copy
+ fun:boxed_proxy_lcopy_value
+ fun:gtk_style_context_get_valist
+ fun:gtk_style_context_get
+ fun:set_color
+ fun:gtk_style_update_from_context
+ fun:gtk_style_constructed
+ fun:g_object_newv
+ fun:g_object_new_valist
+ fun:g_object_new
+ ...
+}
+{
+ Bug 794366
+ Memcheck:Leak
+ ...
+ obj:/usr/lib64/libgtk-x11-2.0.so.0.1800.9
+ ...
+}
+{
+ Bug 794368
+ Memcheck:Leak
+ ...
+ obj:/usr/lib64/libXrandr.so.2.2.0
+ ...
+}
+{
+ Bug 794373
+ Memcheck:Leak
+ ...
+ obj:/lib64/libgobject-2.0.so.0.2200.5
+ ...
+}
+{
+ Bug 966673
+ Memcheck:Leak
+ fun:malloc
+ obj:/lib/x86_64-linux-gnu/libresolv-2.13.so
+ ...
+ fun:gaih_inet
+ fun:getaddrinfo
+ fun:PR_GetAddrInfoByName
+ ...
+}
+{
+ Bug 979242
+ Memcheck:Leak
+ fun:calloc
+ fun:xcb_connect_to_fd
+ fun:xcb_connect_to_display_with_auth_info
+ fun:_XConnectXCB
+ fun:XOpenDisplay
+ fun:gdk_display_open
+ ...
+}
+{
+ _g_io_module_get_default
+ Memcheck:Leak
+ ...
+ fun:g_io_module_new
+ fun:g_io_modules_scan_all_in_directory_with_scope
+ fun:_g_io_modules_ensure_loaded
+ fun:_g_io_module_get_default
+}
+{
+ dlopen leak triggered by bug 1492121
+ Memcheck:Leak
+ match-leak-kinds: definite
+ fun:malloc
+ fun:dl_open_worker
+ fun:_dl_catch_error
+ fun:_dl_open
+ fun:dlopen_doit
+ fun:_dl_catch_error
+ fun:_dlerror_run
+ fun:dlopen@@GLIBC_2.2.5
+ ...
+}
+
+###################################
+# Leaks in short lived precesses #
+###################################
+
+{
+ Bug 984196
+ Memcheck:Leak
+ ...
+ fun:childgltest
+ ...
+}
+
+#########################################
+# Uninitialised value false positives #
+#########################################
+
+# This concerns a false positive pertaining to Memcheck's overly-
+# conservative instrumentation of CPUID. See bug 1288618 comments
+# 119 through 127.
+{
+ Bug 1288618 comments 119 through 127
+ Memcheck:Cond
+ fun:_ZN6SkOptsL4initEv
+ fun:sk_once_no_arg_adaptor
+}
+
+{
+ Bug 1288618 comments 119 through 127 part 2
+ Memcheck:Cond
+ fun:__get_cpuid
+ fun:cpuid
+ fun:_ZN6SkOptsL4initEv
+ fun:sk_once_no_arg_adaptor
+}
+
+# More stuff to do with CPUID and Skia. Apparently we could get rid of
+# these if we could patch our in-tree Skia, but that's not favoured.
+#
+# Conditional jump or move depends on uninitialised value(s)
+# at 0xFDD1D97: SkCpu::CacheRuntimeFeatures()
+# by 0xFE8A66E: SkGraphics::Init()
+# by 0xE757308: gfxPlatform::Init()
+# by 0xE75772C: gfxPlatform::GetPlatform()
+{
+ Skia and CPUID, Jan 2017, #1
+ Memcheck:Cond
+ fun:_ZN5SkCpu20CacheRuntimeFeaturesEv
+ fun:_ZN10SkGraphics4InitEv
+ fun:_ZN11gfxPlatform4InitEv
+ fun:_ZN11gfxPlatform11GetPlatformEv
+}
+
+# Conditional jump or move depends on uninitialised value(s)
+# at 0xFD5B218: SkOpts::Init()
+# by 0xE757308: gfxPlatform::Init()
+# by 0xE75772C: gfxPlatform::GetPlatform()
+# by 0xF1A3691: mozilla::dom::ContentProcess::Init()
+# or mozilla::dom::ContentChild::RecvSetXPCOMProcessAttributes()
+{
+ Skia and CPUID, Jan 2017, #2
+ Memcheck:Cond
+ fun:_ZN6SkOpts4InitEv
+ fun:_ZN11gfxPlatform4InitEv
+ fun:_ZN11gfxPlatform11GetPlatformEv
+ fun:_ZN7mozilla3dom*Content*
+}
+
+# False positives triggered by rust 1.20.0 (at least) builds of stylo.
+# See bug 1394696. The diagnosis is an llvm optimization transforming
+# `if A && B` to `if B && A` if is can be proven that A is false
+# whenever B is uninitialized. Confusing, but valid.
+#
+# Conditional jump or move depends on uninitialised value(s)
+# at 0x113ED01E: selectors::matching::matches_complex_selector_internal (option.rs:421)
+# by 0x113ECF19: selectors::matching::matches_complex_selector (matching.rs:501)
+# by 0x113EBAC0: <style::selector_map::SelectorMap<style::stylist::Rule>>::get_matching_rules (matching.rs:397)
+{
+ Bug 1394696 Stylo selector, Sept 2017, part 1
+ Memcheck:Cond
+ fun:_ZN9selectors8matching33matches_complex_selector_internal*
+ fun:_ZN9selectors8matching24matches_complex_selector*
+ ...
+ fun:_ZN69_$LT$style..selector_map..SelectorMap$LT$style..stylist..Rule$GT$$GT$18get_matching_rules*
+}
+
+# Conditional jump or move depends on uninitialised value(s)
+# at 0x113EFFDE: selectors::matching::matches_complex_selector_internal (option.rs:421)
+# by 0x113EFED9: selectors::matching::matches_complex_selector (matching.rs:501)
+# by 0x113DFE55: style::stylist::Stylist::match_revalidation_selectors::{{closure}} (matching.rs:397)
+{
+ Bug 1394696 Stylo selector, Sept 2017, part 2
+ Memcheck:Cond
+ fun:_ZN9selectors8matching33matches_complex_selector_internal*
+ fun:_ZN9selectors8matching24matches_complex_selector*
+ ...
+ fun:_ZN5style9traversal13compute_style*
+ fun:recalc_style_at<style::gecko::wrapper::GeckoElement,style::gecko::traversal::RecalcStyleOnly,closure>
+}
+
+# Similar issue triggered by rust 1.23.0 on builds of stylo.
+#
+# at 0x11819B3E: std::sync::once::Once::call_once::{{closure}} (raw_vec.rs:225)
+# by 0x118FDCCC: std::sync::once::Once::call_inner (once.rs:341)
+# by 0x1139C761: UnknownInlinedFun (once.rs:228)
+{
+ Bug 1418083 Servo::TraverseSubtree, January 2018
+ Memcheck:Cond
+ fun:*ZN3std4sync4once4Once9call_once*
+ fun:*ZN3std4sync4once4Once10call_inner*
+ ...
+ fun:Servo_TraverseSubtree
+}
+
+# Issue triggered by rust 1.23.0 on builds of stylo.
+{
+ Bug 1418083 SelectorList::parse, January 2018
+ Memcheck:Cond
+ fun:_ZN36_$LT$smallvec..SmallVec*
+ fun:_ZN52_$LT$selectors..parser..SelectorList*
+}
+
+# Conditional jump or move depends on uninitialised value(s)
+# at 0x118720EA: <core::slice::Iter<'a, T> as core::iter::iterator::Iterator>::all::{{closure}} (mod.rs:1173)
+# by 0x11871EF6: style::media_queries::MediaList::evaluate (mod.rs:1277)
+{
+ Bug 1430608 nsMediaFeatures, January 2018
+ Memcheck:Cond
+ fun:_ZN91_$LT$core..slice..Iter$LT$$u27$a$C$$u20$T$GT$$u20$as$u20$core..iter..iterator..Iterator$GT$3all*
+ fun:_ZN5style13media_queries9MediaList8evaluate*
+}
+
+# Several issues triggered by enabling stylo-chrome.
+
+# Conditional jump or move depends on uninitialised value(s)
+# at 0x11F88693: style::properties::LonghandId::parse_value (heap.rs:0)
+# by 0x1203BBAB: style::properties::UnparsedValue::substitute_variables (parser.rs:594)
+# by 0x11CFCE33: style::properties::cascade (properties.rs:135672)
+{
+ Bug 1437796 LonghandId::parse_value, January 2018
+ Memcheck:Cond
+ fun:_ZN5style10properties10LonghandId11parse_value*
+ fun:_ZN5style10properties13UnparsedValue20substitute_variables*
+ fun:_ZN5style10properties7cascade*
+}
+
+# Conditional jump or move depends on uninitialised value(s)
+# at 0x11DF7AF6: <smallvec::SmallVec<A>>::grow (raw_vec.rs:0)
+# by 0x11DF6ED0: Servo_InvalidateStyleForDocStateChanges (lib.rs:475)
+# by 0x10394B7E: mozilla::ServoStyleSet::InvalidateStyleForDocumentStateChanges(mozilla::EventStates) (ServoStyleSet.cpp:248)
+{
+ Bug 1437796 SmallVec::grow in Servo_InvalidateStyleForDocStateChanges, January 2018
+ Memcheck:Cond
+ fun:_ZN36_$LT$smallvec..SmallVec$LT$A$GT$$GT$4grow*
+ fun:Servo_InvalidateStyleForDocStateChanges
+ fun:_ZN7mozilla13ServoStyleSet38InvalidateStyleForDocumentStateChangesENS_11EventStatesE
+}
+
+
+##############################################################################
+## BEGIN suppressions for Stylo as compiled by rustc 1.25.0
+# Even more similar issues, resulting from transitioning to rustc 1.25.0.
+# See bug 1447137.
+
+
+# Suppressions rooted at *style*values*specified*color*Color*style*parser*Parse*parse*
+
+{
+ bug1447137-01
+ Memcheck:Cond
+ fun:*style*values*specified*color*Color*style*parser*Parse*parse*
+ fun:*style*SimpleShadow*
+ fun:*style*parse_value*
+ fun:*style*parse_into*
+}
+
+{
+ bug1447137-02
+ Memcheck:Cond
+ fun:*style*values*specified*color*Color*style*parser*Parse*parse*
+ fun:*style*UrlPaintServer*
+ fun:*style*parse_value*
+ fun:*style*parse_into*
+}
+
+{
+ bug1447137-03
+ Memcheck:Cond
+ fun:*style*values*specified*color*Color*style*parser*Parse*parse*
+ fun:*style*parse_fallback*
+ fun:*style*UrlPaintServer*
+ fun:*style*parse_value*
+}
+
+{
+ bug1447137-04
+ Memcheck:Cond
+ fun:*style*values*specified*color*Color*style*parser*Parse*parse*
+ fun:*style*parse_border*
+ fun:*style*parse_into*
+ fun:*style*parse_value*
+}
+
+{
+ bug1447137-05
+ Memcheck:Cond
+ fun:*style*values*specified*color*Color*style*parser*Parse*parse*
+ fun:*style*parse_quirky*
+ fun:*style*parse_value*
+ fun:*style*parse_into*
+}
+
+{
+ bug1447137-06
+ Memcheck:Cond
+ fun:*style*values*specified*color*Color*style*parser*Parse*parse*
+ fun:*style*parse_value*
+ fun:*style*parse_into*
+ fun:*style*parse_value*
+}
+
+{
+ bug1447137-07
+ Memcheck:Cond
+ fun:*style*values*specified*color*Color*style*parser*Parse*parse*
+ fun:*style*parse_border*
+ fun:*style*parse_value*
+ fun:*style*parse_into*
+}
+
+{
+ bug1447137-08
+ Memcheck:Cond
+ fun:*style*values*specified*color*Color*style*parser*Parse*parse*
+ fun:*style*parse_quirky*
+ fun:*style*parse_value*
+ fun:*style*substitute_variables*
+}
+
+{
+ bug1447137-09
+ Memcheck:Cond
+ fun:*style*values*specified*color*Color*style*parser*Parse*parse*
+ fun:*style*Gradient*
+ fun:*style*Parse*
+ fun:*style*parse_value*
+}
+
+{
+ bug1447137-10
+ Memcheck:Cond
+ fun:*style*values*specified*color*Color*style*parser*Parse*parse*
+ fun:*style*SimpleShadow*
+ fun:*style*parse*closure*
+ fun:*style*parse_value*
+}
+
+{
+ bug1447137-11
+ Memcheck:Cond
+ fun:*style*values*specified*color*Color*style*parser*Parse*parse*
+ fun:*style*parse_border*
+ fun:*style*substitute_variables*
+ fun:*style*substitute_variables*
+}
+
+{
+ bug1447137-12
+ Memcheck:Cond
+ fun:*style*values*specified*color*Color*style*parser*Parse*parse*
+ fun:*style*parse_border*
+ fun:*style*parse_value*
+ fun:*style*substitute_variables*
+}
+
+{
+ bug1447137-13
+ Memcheck:Cond
+ fun:*style*values*specified*color*Color*style*parser*Parse*parse*
+ fun:*style*parse_value*
+ fun:*style*substitute_variables*
+ fun:*style*substitute_variables*
+}
+
+
+{
+ bug1447137-14
+ Memcheck:Cond
+ fun:*style*values*specified*color*Color*style*parser*Parse*parse*
+ fun:*style*parse_value*
+ fun:*style*parse_into*
+ fun:*geckoservo*parse_property_into*
+}
+
+##########################################
+# Suppressions rooted at *selectors*parser*SelectorList*Impl*parse*
+
+{
+ bug1454511
+ Memcheck:Cond
+ fun:*selectors*parser*SelectorList*Impl*parse*
+}
+
+##########################################
+# Suppressions rooted at *style*properties*shorthands*
+
+{
+ bug1447137-17
+ Memcheck:Cond
+ fun:*style*properties*shorthands*
+ fun:*style*properties*PropertyDeclaration*parse_into*
+ fun:*style*parse_value*
+ fun:*cssparser*Iterator*next*
+}
+
+## END suppressions for Stylo as compiled by rustc 1.25.0
+##############################################################################
+
+
+# Another suppression for Stylo, August 2018. See bug 1479055.
+#
+# Conditional jump or move depends on uninitialised value(s)
+# at style::[..]::clip_path::cascade_property (gecko_properties.rs:17152)
+# by style::properties::cascade_rules (properties.rs:83642)
+# by [..]::cascade_style_and_visited (properties.rs:83129)
+# by [..]::cascade_primary_style (style/style_resolver.rs:216)
+{
+ Bug 1479055: style::properties::longhands::clip_path::cascade_property
+ Memcheck:Cond
+ fun:_ZN5style10properties9longhands9clip_path16cascade_property*
+ fun:_ZN5style10properties13cascade_rules*
+ fun:_ZN109_$LT$style*style_resolver*cascade_style_and_visited*
+ fun:_ZN109_$LT$style*cascade_primary_style*
+}
+
+# Another suppression for Stylo, October 2018. See bug 1496486.
+# Conditional jump or move depends on uninitialised value(s)
+# at 0x108E2931: style::properties::longhands::font_language_override::cascade_property+81 (font.rs:2095)
+# by 0x107E95B4: style::properties::cascade::Cascade::apply_properties+580 (cascade.rs:463)
+# by 0x107E82D8: style::properties::cascade::cascade_rules+2440 (cascade.rs:303)
+# by 0x107E7206: <style::style_resolver::StyleResolverForElement<'a, 'ctx, 'le, E>>::cascade_style_and_visited+310 (cascade.rs:93)
+# Uninitialised value was created by a stack allocation
+# at 0x10A42A40: style::properties::shorthands::font::parse_value (font.rs:376)
+{
+ Bug 1496486: style::properties::longhands::font_language_override::cascade_property
+ Memcheck:Cond
+ fun:_ZN5style10properties9longhands22font_language_override16cascade_property*
+ fun:_ZN5style10properties7cascade7Cascade16apply_properties*
+ fun:_ZN5style10properties7cascade13cascade_rules*
+}
+
+###################################################
+# For valgrind-mochitest ("tc-M-V [tier 2]") runs on taskcluster.
+# See bug 1248365.
+# These are specific to Ubuntu 12.04.5, 64-bit.
+###################################################
+
+
+# Not sure what this is. Is it the well-known
+# Memcheck-being-confused-by-zlib thing? I suspect so.
+#
+# Conditional jump or move depends on uninitialised value(s)
+# at 0xB6154E0: inflateReset2 (in /lib/x86_64-linux-gnu/libz.so.1.2.3.4)
+# by 0xB6155D8: inflateInit2_ (in /lib/x86_64-linux-gnu/libz.so.1.2.3.4)
+# by 0xADDE253: png_create_read_struct_2
+# (in /lib/x86_64-linux-gnu/libpng12.so.0.46.0)
+# Uninitialised value was created by a heap allocation
+# at 0x4C2D027: malloc (coregrind/m_replacemalloc/vg_replace_malloc.c:298)
+# by 0xADE960F: png_malloc (in /lib/x86_64-linux-gnu/libpng12.so.0.46.0)
+# by 0xADD1B95: ??? (in /lib/x86_64-linux-gnu/libpng12.so.0.46.0)
+# by 0xB6155B6: inflateInit2_ (in /lib/x86_64-linux-gnu/libz.so.1.2.3.4)
+# by 0xADDE253: png_create_read_struct_2
+# (in /lib/x86_64-linux-gnu/libpng12.so.0.46.0)
+# by 0x15707869: ??? (in /usr/lib/x86_64-linux-gnu/gdk-pixbuf-2.0/2.10.0/
+# loaders/libpixbufloader-png.so)
+{
+ Bug 1248365: mochitest-libz-1
+ Memcheck:Cond
+ fun:inflateReset2
+ fun:inflateInit2_
+ fun:png_create_read_struct_2
+}
+
+
+# I don't know what this is.
+#
+# Conditional jump or move depends on uninitialised value(s)
+# at 0x39608257: ??? (in /usr/lib/x86_64-linux-gnu/librsvg-2.so.2.36.1)
+# by 0x39608E96: rsvg_handle_get_pixbuf_sub (in /usr/lib/x86_64-linux-gnu/l
+# by 0x37D00D2A: ??? (in /usr/lib/x86_64-linux-gnu/gdk-pixbuf-2.0/2.10.0/lo
+# by 0x88FF740: gdk_pixbuf_loader_close (in /usr/lib/x86_64-linux-gnu/libgd
+# by 0x88FBA48: ??? (in /usr/lib/x86_64-linux-gnu/libgdk_pixbuf-2.0.so.0.26
+# by 0x88FD290: gdk_pixbuf_new_from_stream_at_scale (in /usr/lib/x86_64-lin
+# by 0x6EF96A7: ??? (in /usr/lib/x86_64-linux-gnu/libgtk-3.so.0.400.2)
+# by 0x6EFC2B1: gtk_icon_info_load_icon (in /usr/lib/x86_64-linux-gnu/libgt
+# Uninitialised value was created by a stack allocation
+# at 0xAB786B0: ??? (in /usr/lib/x86_64-linux-gnu/libpixman-1.so.0.30.2)
+{
+ Bug 1248365: mochitest-librsvg-1
+ Memcheck:Cond
+ obj:/*/librsvg-2.so.2.36*
+ fun:rsvg_handle_get_pixbuf_sub
+ obj:/*/libpixbufloader-svg.so*
+ fun:gdk_pixbuf_loader_close
+}
+
+
+# There now follow some suppressions to do with libpixman. There are two
+# variants, one for errors in the system libpixman, and one for errors in
+# our in-tree copy. I suspect that all of these sse2 compositing reports
+# are Memcheck false positives, possibly to do with inaccurate
+# instrumentation of the function combine1() in
+# gfx/cairo/libpixman/src/pixman-sse2.c.
+#
+# Conditional jump or move depends on uninitialised value(s)
+# at 0xAB93A10: ??? (in /usr/lib/x86_64-linux-gnu/libpixman-1.so.0.30.2)
+# by 0xAB78927: ??? (in /usr/lib/x86_64-linux-gnu/libpixman-1.so.0.30.2)
+# by 0xAB40B0B: pixman_image_composite32 (in /usr/lib/x86_64-linux-gnu/libp
+# by 0x865C95C: ??? (in /usr/lib/x86_64-linux-gnu/libcairo.so.2.11000.2)
+# by 0x865E3CB: ??? (in /usr/lib/x86_64-linux-gnu/libcairo.so.2.11000.2)
+# by 0x865F6EA: ??? (in /usr/lib/x86_64-linux-gnu/libcairo.so.2.11000.2)
+# by 0x865F968: ??? (in /usr/lib/x86_64-linux-gnu/libcairo.so.2.11000.2)
+# by 0x867D7C3: ??? (in /usr/lib/x86_64-linux-gnu/libcairo.so.2.11000.2)
+# Uninitialised value was created by a stack allocation
+# at 0xAB786B0: ??? (in /usr/lib/x86_64-linux-gnu/libpixman-1.so.0.30.2)
+{
+ Bug 1248365: mochitest-libpixman-1
+ Memcheck:Cond
+ obj:/*/libpixman-1.so.0.30*
+ obj:/*/libpixman-1.so.0.30*
+ fun:pixman_image_composite32
+}
+
+
+# Conditional jump or move depends on uninitialised value(s)
+# at 0xF9EA219: sse2_composite_over_8888_8888
+# by 0xF9F5B5F: _moz_pixman_image_composite32
+# by 0xF96E29E: _clip_and_composite_boxes
+# by 0xF96F79D: _cairo_image_surface_fill
+# by 0xF98790C: _cairo_surface_fill
+# by 0xF96FE2E: _cairo_gstate_fill
+# by 0xF98B3D9: _moz_cairo_fill_preserve
+# by 0xE4CF383: mozilla::gfx::DrawTargetCairo::DrawPattern(mozilla::gfx:
+# Uninitialised value was created by a stack allocation
+# at 0xB8E46B0: ??? (in /usr/lib/x86_64-linux-gnu/libpixman-1.so.0.30.2)
+{
+ Bug 1248365: mochitest-libpixman-2
+ Memcheck:Cond
+ fun:sse2_composite_over_8888_8888
+ fun:_moz_pixman_image_composite32
+ fun:_clip_and_composite_boxes
+ fun:_cairo_image_surface_fill
+}
+
+
+# Conditional jump or move depends on uninitialised value(s)
+# at 0xF9D56AE: sse2_combine_over_u (in /builds/worker/workspace/build/applic
+# by 0xF9D05D4: general_composite_rect (in /builds/worker/workspace/build/app
+# by 0xF9F5B5F: _moz_pixman_image_composite32 (in /builds/worker/workspace/bu
+# by 0xF96CF63: _clip_and_composite (in /builds/worker/workspace/build/applic
+# by 0xF96D656: _clip_and_composite_boxes.part.32 (in /builds/worker/workspac
+# by 0xF96E328: _clip_and_composite_boxes (in /builds/worker/workspace/build/
+# by 0xF96F79D: _cairo_image_surface_fill (in /builds/worker/workspace/build/
+# by 0xF98790C: _cairo_surface_fill (in /builds/worker/workspace/build/applic
+# Uninitialised value was created by a stack allocation
+# at 0xF9D024D: general_composite_rect (in /builds/worker/workspace/build/app
+#
+{
+ Bug 1248365: mochitest-libpixman-3
+ Memcheck:Cond
+ fun:sse2_combine_over_u
+ fun:general_composite_rect
+ fun:_moz_pixman_image_composite32
+ fun:_clip_and_composite*
+}
+
+
+# Conditional jump or move depends on uninitialised value(s)
+# at 0xE626A5C: mozilla::image::imgFrame::Optimize() (in /builds/worker/work
+# by 0xE626C68: mozilla::image::imgFrame::UnlockImageData() (in /home/work
+# by 0xE608E8F: mozilla::image::RawAccessFrameRef::~RawAccessFrameRef() (i
+# by 0xE61F5E4: mozilla::image::Decoder::~Decoder() (in /builds/worker/works
+# by 0xE630E32: mozilla::image::nsIconDecoder::~nsIconDecoder() (in /home/
+# by 0xE61A5B2: mozilla::image::Decoder::Release() (in /builds/worker/worksp
+# by 0xE61DD73: mozilla::image::NotifyDecodeCompleteWorker::~NotifyDecodeC
+# by 0xE61DD8F: mozilla::image::NotifyDecodeCompleteWorker::~NotifyDecodeC
+# Uninitialised value was created by a stack allocation
+# at 0xB8E46B0: ??? (in /usr/lib/x86_64-linux-gnu/libpixman-1.so.0.30.2)
+{
+ Bug 1248365: mochitest-libpixman-4
+ Memcheck:Cond
+ fun:_ZN7mozilla5image8imgFrame8OptimizeEv
+ fun:_ZN7mozilla5image8imgFrame15UnlockImageDataEv
+ fun:_ZN7mozilla5image17RawAccessFrameRefD1Ev
+ fun:_ZN7mozilla5image7DecoderD1Ev
+}
+
+
+# Not sure what this. I can't reproduce it locally despite much trying.
+# Syscall param sendmsg(msg.msg_iov[0]) points to uninitialised byte(s)
+# at 0x4E4533D: ??? (syscall-template.S:82)
+# by 0xE12C0A7: IPC::Channel::ChannelImpl::ProcessOutgoingMessages() (in /h
+# by 0xE142FD0: RunnableMethod<IPC::Channel, bool (IPC::Channel::*)(IPC::Me
+# by 0xE1240EA: MessageLoop::RunTask(Task*) (in /builds/worker/workspace/buil
+# by 0xE128A46: MessageLoop::DeferOrRunPendingTask(MessageLoop::PendingTask
+# by 0xE128B6D: MessageLoop::DoWork() (in /builds/worker/workspace/build/appl
+# by 0xE12272C: base::MessagePumpLibevent::Run(base::MessagePump::Delegate*
+# by 0xE124155: MessageLoop::Run() (in /builds/worker/workspace/build/applica
+{
+ Bug 1248365: mochitest-sendmsg-1
+ Memcheck:Param
+ sendmsg(msg.msg_iov[0])
+ obj:/lib/x86_64-linux-gnu/libpthread-2.15.so
+ fun:_ZN3IPC7Channel11ChannelImpl23ProcessOutgoingMessagesEv
+ fun:_ZN14RunnableMethodIN3IPC7ChannelEMS1_FbPNS0_7MessageEEN7mozilla5Tuple*
+}
+
+
+# I can't repro this either.
+# Conditional jump or move depends on uninitialised value(s)
+# at 0x418E7E7C: ??? (in /usr/lib/x86_64-linux-gnu/libavcodec.so.53.35.0)
+# by 0x4192D620: ??? (in /usr/lib/x86_64-linux-gnu/libavcodec.so.53.35.0)
+# by 0x4192E717: ??? (in /usr/lib/x86_64-linux-gnu/libavcodec.so.53.35.0)
+# by 0x41711BC4: ??? (in /usr/lib/x86_64-linux-gnu/libavcodec.so.53.35.0)
+# by 0x41B08B6A: avcodec_open2 (in /usr/lib/x86_64-linux-gnu/libavcodec.so.
+# by 0xEEAD89C: mozilla::FFmpegDataDecoder<53>::InitDecoder() (in /home/wor
+# by 0xEEAE42B: mozilla::FFmpegVideoDecoder<53>::Init() (in /builds/worker/wo
+# by 0xEEA4C07: mozilla::H264Converter::Init() (in /builds/worker/workspace/b
+# Uninitialised value was created by a heap allocation
+# at 0x4C2D11F: realloc (vg_replace_malloc.c:785)
+# by 0x406196: moz_xrealloc (in /builds/worker/workspace/build/application/fi
+# by 0xDEB43AC: nsTArrayInfallibleAllocator::ResultTypeProxy nsTArray_base<
+# by 0xEEAD850: mozilla::FFmpegDataDecoder<53>::InitDecoder() (in /home/wor
+# by 0xEEAE42B: mozilla::FFmpegVideoDecoder<53>::Init() (in /builds/worker/wo
+{
+ Bug 1248365: mochitest-libavcodec-1-c
+ Memcheck:Cond
+ obj:/*/libavcodec.so.53*
+ obj:/*/libavcodec.so.53*
+ obj:/*/libavcodec.so.53*
+ obj:/*/libavcodec.so.53*
+}
+{
+ Bug 1248365: mochitest-libavcodec-1-v8
+ Memcheck:Value8
+ obj:/*/libavcodec.so.53*
+ obj:/*/libavcodec.so.53*
+ obj:/*/libavcodec.so.53*
+ obj:/*/libavcodec.so.53*
+}
+
+
+# Not sure what this is, but I am inclined to think it is also probably a
+# SSE2-induced false positive similar to mochitest-libpixman-2 above.
+# Use of uninitialised value of size 8
+# at 0xE4F3E89: FastConvertYUVToRGB32Row (in /builds/worker/workspace/build/a
+# by 0xE4F4A6D: mozilla::gfx::ConvertYCbCrToRGB32(unsigned char const*, uns
+# by 0xE4F4B17: mozilla::gfx::ConvertYCbCrToRGB(mozilla::layers::PlanarYCbC
+# by 0xE5227CB: mozilla::layers::PlanarYCbCrImage::GetAsSourceSurface() (in
+# by 0xE5B2465: mozilla::layers::SharedPlanarYCbCrImage::GetAsSourceSurface
+# by 0xE52FE44: mozilla::layers::BasicImageLayer::Paint(mozilla::gfx::DrawT
+# by 0xE5618A1: mozilla::layers::BasicLayerManager::PaintSelfOrChildren(moz
+# by 0xE560F83: mozilla::layers::BasicLayerManager::PaintLayer(gfxContext*,
+# Uninitialised value was created by a stack allocation
+# at 0x434B36B2: ??? (in /usr/lib/x86_64-linux-gnu/libavcodec.so.53.35.0)
+{
+ Bug 1248365: FastConvertYUVToRGB32Row-1
+ Memcheck:Value8
+ fun:FastConvertYUVToRGB32Row
+ fun:_ZN7mozilla3gfx19ConvertYCbCrToRGB32*
+ fun:_ZN7mozilla3gfx17ConvertYCbCrToRGB*
+ fun:_ZN7mozilla6layers16PlanarYCbCrImage18GetAsSourceSurface*
+}
+
+# Similarly:
+# Conditional jump or move depends on uninitialised value(s)
+# at 0xFDAD1D1: sse41::blit_row_s32a_opaque(unsigned int*, unsigned int con
+# by 0xFD60FA9: Sprite_D32_S32::blitRect(int, int, int, int) (in /home/work
+# by 0xFEB9E0D: SkScan::FillIRect(SkIRect const&, SkRegion const*, SkBlitte
+# by 0xFEBDDF3: SkScan::FillIRect(SkIRect const&, SkRasterClip const&, SkBl
+{
+ SKIA and SSE4, Jan 2017
+ Memcheck:Cond
+ fun:_ZN5sse41L20blit_row_s32a_opaque*
+ fun:_ZN14Sprite_D32_S328blitRect*
+ fun:_ZN6SkScan9FillIRect*
+ fun:_ZN6SkScan9FillIRect*
+}
+
+# This is probably a V false positive, due to an insufficiently accurate
+# description of the ioctl(SIOCETHTOOL) behavior.
+# Syscall param ioctl(SIOCETHTOOL) points to uninitialised byte(s)
+# at 0x5D5CBF7: ioctl (syscall-template.S:82)
+# by 0xF58EB67: nr_stun_get_addrs (in /builds/worker/workspace/build/applica
+# by 0xF594791: nr_stun_find_local_addresses (in /builds/worker/workspace/bu
+# by 0xF58A237: nr_ice_get_local_addresses (in /builds/worker/workspace/buil
+# by 0xF58ADDE: nr_ice_gather (in /builds/worker/workspace/build/application
+# by 0xE43F35F: mozilla::NrIceCtx::StartGathering() (in /builds/worker/works
+# by 0xE419560: mozilla::PeerConnectionMedia::EnsureIceGathering_s() (in /
+# by 0xE41A11C: mozilla::runnable_args_memfn<RefPtr<mozilla::PeerConnectio
+# Address 0x1cc3fb48 is on thread 6's stack
+# in frame #1, created by nr_stun_get_addrs (???:)
+{
+ Bug 1248365: mochitest-ioctl(SIOCETHTOOL)-1
+ Memcheck:Param
+ ioctl(SIOCETHTOOL)
+ fun:ioctl
+ fun:nr_stun_get_addrs
+ fun:nr_stun_find_local_addresses
+}
+
+
+# This looks like uninitialised padding bytes in a structure owned
+# by libfontconfig. So there's nothing we can do about it.
+# Syscall param write(buf) points to uninitialised byte(s)
+# at 0x4E44CCD: ??? (syscall-template.S:82)
+# by 0x9F1FF56: ??? (in /usr/lib/x86_64-linux-gnu/libfontconfig.so.1.4.4)
+# by 0x9F2679B: ??? (in /usr/lib/x86_64-linux-gnu/libfontconfig.so.1.4.4)
+# by 0x9F22B98: ??? (in /usr/lib/x86_64-linux-gnu/libfontconfig.so.1.4.4)
+# by 0x9F22C5F: FcConfigAppFontAddDir (in /usr/lib/x86_64-linux-gnu/libfon
+# by 0xE850173: gfxFcPlatformFontList::ActivateBundledFonts() (in /home/wo
+# by 0xE852258: gfxFcPlatformFontList::InitFontListForPlatform() (in /home
+# by 0xE895E21: gfxPlatformFontList::InitFontList() (in /builds/worker/works
+# Address 0x2316663c is 156 bytes inside a block of size 1,448 alloc'd
+# at 0x4C2CF71: malloc (vg_replace_malloc.c:299)
+# by 0x9F1FD1D: ??? (in /usr/lib/x86_64-linux-gnu/libfontconfig.so.1.4.4)
+# by 0x9F26788: ??? (in /usr/lib/x86_64-linux-gnu/libfontconfig.so.1.4.4)
+# by 0x9F22B98: ??? (in /usr/lib/x86_64-linux-gnu/libfontconfig.so.1.4.4)
+# by 0x9F22C5F: FcConfigAppFontAddDir (in /usr/lib/x86_64-linux-gnu/libfon
+# by 0xE850173: gfxFcPlatformFontList::ActivateBundledFonts() (in /home/wo
+# by 0xE852258: gfxFcPlatformFontList::InitFontListForPlatform() (in /home
+# by 0xE895E21: gfxPlatformFontList::InitFontList() (in /builds/worker/works
+{
+ Bug 1248365: libfontconfig-1
+ Memcheck:Param
+ write(buf)
+ obj:/*/libpthread*.so*
+ obj:/*/libfontconfig.so*
+ ...
+ obj:/*/libfontconfig.so*
+ fun:FcConfigAppFontAddDir
+}
+
+
+# There's nothing we can do about these short of throwing in
+# --show-mismatched-frees=no, but that's a bit drastic, so for now,
+# just suppress them. A typical error is:
+#
+# Mismatched free() / delete / delete []
+# at 0x4C2BE97: free (vg_replace_malloc.c:530)
+# by 0xFCD09EC: ots::ots_post_free(ots::Font*) (in /builds/worker/workspace/
+# by 0xFCC600E: ots::Font::~Font() (in /builds/worker/workspace/build/applic
+# by 0xFCCBFA5: ots::OTSContext::Process(ots::OTSStream*, unsigned char co
+# by 0xE7D7C8D: gfxUserFontEntry::SanitizeOpenTypeData(unsigned char const
+# by 0xE7E371D: gfxUserFontEntry::LoadPlatformFont(unsigned char const*, u
+# by 0xE7E48AA: gfxUserFontEntry::FontDataDownloadComplete(unsigned char c
+# by 0xF49D25B: nsFontFaceLoader::OnStreamComplete(nsIStreamLoader*, nsISu
+# Address 0x15671f00 is 0 bytes inside a block of size 490 alloc'd
+# at 0x4C2CAEE: operator new(unsigned long) (vg_replace_malloc.c:332)
+# by 0xF6AB737: std::vector<unsigned short, std::allocator<unsigned short>
+# by 0xFCD0FDE: ots::ots_post_parse(ots::Font*, unsigned char const*, unsi
+# by 0xFCCA3D9: (anonymous namespace)::ProcessGeneric(ots::OpenTypeFile*,
+# by 0xFCCB17E: (anonymous namespace)::ProcessTTF(ots::OpenTypeFile*, ots:
+# by 0xFCCBA54: ots::OTSContext::Process(ots::OTSStream*, unsigned char co
+# by 0xE7D7C8D: gfxUserFontEntry::SanitizeOpenTypeData(unsigned char const
+# by 0xE7E371D: gfxUserFontEntry::LoadPlatformFont(unsigned char const*, u
+{
+ Bug 1248365: ots::Font::~Font()-1
+ Memcheck:Free
+ fun:free
+ fun:_ZN3ots13ots_post_free*
+ fun:_ZN3ots4FontD1Ev
+ fun:_ZN3ots10OTSContext7Process*
+}
+
+# and various similar:
+{
+ ots mismatched frees, Jan 2017, #1
+ Memcheck:Free
+ fun:_ZdlPv
+ fun:_ZN3ots14ots_glyf_parse*
+ fun:_ZN12_GLOBAL__N_114ProcessGenericEPN3ots12OpenTypeFile*
+ fun:_ZN12_GLOBAL__N_110ProcessTTFEPN3ots12OpenTypeFile*
+}
+{
+ ots mismatched frees, Jan 2017, #2
+ Memcheck:Free
+ fun:_ZdlPv
+ fun:_ZN3ots13ots_cff_parse*
+ fun:_ZN12_GLOBAL__N_114ProcessGenericEPN3ots12OpenTypeFile*
+ fun:_ZN3ots10OTSContext7ProcessEPNS_9OTSStream*
+}
+{
+ ots mismatched frees, Jan 2017, #3
+ Memcheck:Free
+ fun:_ZdlPv
+ fun:_ZN3ots13ots_cff_parse*
+ fun:_ZN12_GLOBAL__N_114ProcessGenericEPN3ots12OpenTypeFile*
+ fun:_ZN12_GLOBAL__N_110Process*
+}
+{
+ ots mismatched frees, Jan 2017, #4
+ Memcheck:Free
+ fun:_ZdlPv
+ fun:_ZN3ots12ots_cff_free*
+ fun:_ZN3ots4FontD1Ev*
+ fun:_ZN3ots10OTSContext7Process*
+}
+{
+ ots mismatched frees, Jan 2017, #5
+ Memcheck:Free
+ fun:_ZdlPv
+ fun:_ZN3ots13ots_loca_free*
+ fun:_ZN3ots4FontD1Ev*
+ fun:_ZN3ots10OTSContext7Process*
+}
+{
+ ots mismatched frees, Jan 2017, #6
+ Memcheck:Free
+ fun:_ZdlPv
+ fun:_ZN3ots14ots_glyf_parse*
+ fun:_ZN12_GLOBAL__N_114ProcessGenericEPN3ots12OpenTypeFile*
+ fun:_ZN3ots10OTSContext7ProcessEPNS_9OTSStream*
+}
+
+{
+ map_or<selectors::parser::Combinator,bool,closure> #1 (see bug 1365915)
+ Memcheck:Cond
+ fun:map_or<selectors::parser::Combinator,bool,closure>
+ fun:_ZN9selectors8matching33matches_complex_selector_internal*
+ fun:_ZN9selectors8matching24matches_complex_selector*
+ fun:matches_selector<style::gecko::wrapper::GeckoElement,closure>
+}
+
+{
+ map_or<selectors::parser::Combinator,bool,closure> #2 (see bug 1365915)
+ Memcheck:Cond
+ fun:map_or<selectors::parser::Combinator,bool,closure>
+ fun:_ZN9selectors8matching33matches_complex_selector_internal*
+ fun:_ZN9selectors8matching24matches_complex_selector*
+ fun:{{closure}}<closure>
+}
+
+# more leaks in libLLVM-3.6-mesa.so, August 2017. See bug 1338651.
+{
+ static-object-leaks-in-libLLVM-3.6-mesa.so. See bug 1338651.
+ Memcheck:Leak
+ match-leak-kinds: definite
+ fun:_Znwm
+ obj:/*/lib*/libLLVM-3.6-mesa.so
+ obj:/*/lib*/libLLVM-3.6-mesa.so
+}
+
+{
+ bug 1632735
+ Memcheck:Cond
+ fun:_ZN9selectors6parser25parse_one_simple_selector17h*
+ fun:_ZN9selectors6parser14parse_selector17h*
+ fun:_ZN9selectors6parser24SelectorList$LT$Impl$GT$16parse_with_state17h*
+}
+
+{
+ bug 1632735
+ Memcheck:Cond
+ fun:_ZN9selectors6parser25parse_one_simple_selector17h*
+ fun:_ZN9selectors6parser29parse_functional_pseudo_class17h*
+ fun:_ZN9selectors6parser25parse_one_simple_selector17h*
+ fun:_ZN9selectors6parser14parse_selector17h*
+ fun:_ZN9selectors6parser24SelectorList$LT$Impl$GT$16parse_with_state17h*
+}
+
+{
+ bug 1632735
+ Memcheck:Cond
+ fun:_ZN9selectors6parser25parse_one_simple_selector17h*
+ fun:_ZN9selectors6parser14parse_selector17h*
+ fun:_ZN9cssparser6parser18parse_until_before17h*
+ fun:_ZN5style5gecko15selector_parser94_$LT$impl$u20$selectors..parser..Parser$u20$for$u20$style..selector_parser..SelectorParser$GT$36parse_non_ts_functional_pseudo_class17h*
+ fun:_ZN9selectors6parser29parse_functional_pseudo_class17h*
+ fun:_ZN9selectors6parser25parse_one_simple_selector17*
+ fun:_ZN9selectors6parser14parse_selector17h*
+ fun:_ZN9selectors6parser24SelectorList$LT$Impl$GT$16parse_with_state17h*
+}