Reduced with m-c 20200723-138e7b575614

#0 0x7ff8c22c8e44 in AnnotateMozCrashReason /builds/worker/workspace/obj-build/dist/include/mozilla/Assertions.h:42:19
#1 0x7ff8c22c8e44 in MOZ_Crash /builds/worker/workspace/obj-build/dist/include/mozilla/Assertions.h:331:3
#2 0x7ff8c22c8e44 in RustMozCrash src/mozglue/static/rust/wrappers.cpp:17:3
#3 0x7ff8c22c8df4 in mozglue_static::panic_hook::h718309d1c883b225 src/mozglue/static/rust/lib.rs:89:8
#4 0x7ff8c22c86eb in core::ops::function::Fn::call::hff608039b849de82 /rustc/4fb7144ed159f94491249e86d5bbd033b5d60550/src/libcore/ops/function.rs:72:4
#5 0x7ff8c3690b54 in std::panicking::rust_panic_with_hook::hb976084785e50594 /rustc/4fb7144ed159f94491249e86d5bbd033b5d60550/src/libstd/panicking.rs:474:16
#6 0x7ff8c369066a in rust_begin_unwind /rustc/4fb7144ed159f94491249e86d5bbd033b5d60550/src/libstd/panicking.rs:378:4
#7 0x7ff8c36905da in std::panicking::begin_panic_fmt::h82e7fee729e9f5fb /rustc/4fb7144ed159f94491249e86d5bbd033b5d60550/src/libstd/panicking.rs:332:4
#8 0x7ff8c1d2149d in webrender::batch::BatchBuilder::add_prim_to_batch::h82115e7295f6c62c src/gfx/wr/webrender/src/render_task_graph.rs
#9 0x7ff8c1d16a1c in webrender::batch::BatchBuilder::add_pic_to_batch::hcd1d35bcf8e52a95 src/gfx/wr/webrender/src/batch.rs:775:16
#10 0x7ff8c1e107e4 in _$LT$webrender..render_target..ColorRenderTarget$u20$as$u20$webrender..render_target..RenderTarget$GT$::build::h9224b0d038051a2a src/gfx/wr/webrender/src/render_target.rs:413:20
#11 0x7ff8c1d7b59e in webrender::render_target::RenderTargetList$LT$T$GT$::build::h4c27a271a6017b98 src/gfx/wr/webrender/src/render_target.rs:214:12
#12 0x7ff8c1d7b59e in webrender::frame_builder::build_render_pass::ha40f43ab093df2b0 src/gfx/wr/webrender/src/frame_builder.rs:971:12
#13 0x7ff8c1d7b59e in webrender::frame_builder::FrameBuilder::build::h7aabb6f4113eb687 src/gfx/wr/webrender/src/frame_builder.rs:604:16
#14 0x7ff8c1ded12c in webrender::render_backend::Document::build_frame::h44512d514e5d2c4a src/gfx/wr/webrender/src/render_backend.rs:649:24
#15 0x7ff8c1e02182 in webrender::render_backend::RenderBackend::update_document::h196a4214ebf4c562 src/gfx/wr/webrender/src/render_backend.rs:1609:40
#16 0x7ff8c1dfe822 in webrender::render_backend::RenderBackend::prepare_transactions::h557da448843cbaa5 src/gfx/wr/webrender/src/render_backend.rs:1446:31
#17 0x7ff8c1dfe822 in webrender::render_backend::RenderBackend::process_api_msg::hcb87cd7500bcc3f4 src/gfx/wr/webrender/src/render_backend.rs:1389:16
#18 0x7ff8c1df1503 in webrender::render_backend::RenderBackend::run::h4fc7fec56b498a1c src/gfx/wr/webrender/src/render_backend.rs:1013:20
#19 0x7ff8c1c125ba in webrender::renderer::Renderer::new::_$u7b$$u7b$closure$u7d$$u7d$::h1d1771a6b4a93222 src/gfx/wr/webrender/src/renderer.rs:2636:12
#20 0x7ff8c1c125ba in std::sys_common::backtrace::__rust_begin_short_backtrace::h296d5f0cf6829c52 /rustc/4fb7144ed159f94491249e86d5bbd033b5d60550/src/libstd/sys_common/backtrace.rs:130:4
#21 0x7ff8c1c2fee2 in std::thread::Builder::spawn_unchecked::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::hc59e0588a605a91f /rustc/4fb7144ed159f94491249e86d5bbd033b5d60550/src/libstd/thread/mod.rs:475:16
#22 0x7ff8c1c2fee2 in _$LT$std..panic..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::ha38e7ec64cf5e7b1 /rustc/4fb7144ed159f94491249e86d5bbd033b5d60550/src/libstd/panic.rs:318:8
#23 0x7ff8c1c2fee2 in std::panicking::try::do_call::hab091676fbf173e7 /rustc/4fb7144ed159f94491249e86d5bbd033b5d60550/src/libstd/panicking.rs:303:39
#24 0x7ff8c36a1b78 in __rust_maybe_catch_panic /rustc/4fb7144ed159f94491249e86d5bbd033b5d60550/src/libpanic_abort/lib.rs:30:4

bp-4fdbe9c4-23ad-429e-92c5-c3f7a0200723

MOZ_CRASH Reason (Sanitized) handle not requested or allocated!
GraphicsCriticalError |[G0][GFX1-]: Unable to set glyph size and transform: 23 (t=3236.27) |[G1][GFX1-]: Unable to set glyph size and transform: 23 (t=12478.5) |[G2][GFX1-]: Unable to set glyph size and transform: 23 (t=13630.6) |[G3][GFX1-]: Unable to set glyph size and transform: 23 (t=14179.8) |[G4][GFX1-]: Unable to set glyph size and transform: 23 (t=15000.3) |[G5][GFX1-]: Unable to set glyph size and transform: 23 (t=15000.3) |[G6][GFX1-]: Unable to set glyph size and transform: 23 (t=15840.1)

Gnome Xwayland, Debian Testing, Intel HD Graphics 630 (KBL GT2), 2560x1440

With good and bad, resizing is slow and sometimes you can see some glitches.
bad: Resize window until it crashes. ("Process exited with code 11")

mozregression --good 2020-07-01 --bad 2020-07-22 --pref gfx.webrender.all:true layers.gpu-process.enabled:false gfx.webrender.panic-on-gl-error:true widget.disable-native-theme-for-content:true layout.css.backdrop-filter.enabled:true -a https://bug1654901.bmoattachments.org/attachment.cgi?id=9165761

10:48.27 INFO: Last good revision: 3baa645a131c9e9ea987a843af5e04fcc7b46570
10:48.27 INFO: First bad revision: 270edd51781f90cd532edbf9c6dbcfe588d71242
10:48.27 INFO: Pushlog:
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=3baa645a131c9e9ea987a843af5e04fcc7b46570&tochange=270edd51781f90cd532edbf9c6dbcfe588d71242

270edd51781f90cd532edbf9c6dbcfe588d71242 Mark Striemer — Bug 1652627 - Setup a pref for tab modal print UI r=Gijs,sfoster
c19d6d6768688fb627256cf2b871052f6dd7e9e2 Dzmitry Malyshau — Bug 1647918 - Refactor the clip task assignment logic in WR r=gw

mozregression --repo autoland --launch 270edd51781f90cd532edbf9c6dbcfe588d71242 -B debug --pref layers.gpu-process.enabled:false gfx.webrender.panic-on-gl-error:true widget.disable-native-theme-for-content:true layout.css.backdrop-filter.enabled:true -a https://bug1654901.bmoattachments.org/attachment.cgi?id=9165761

0:40.41 INFO: b'Hit MOZ_CRASH(assertion failed: (left == right)'
0:40.41 INFO: b' left: FrameId(0),'
0:40.41 INFO: b' right: FrameId(54)) at gfx/wr/webrender/src/batch.rs:880'

I'm unsure about this observation, but it seemed creepy to me:
During running mozregression my regular (minimized) Nightly crashed/closed without report - multiple times.

Running this I can now reliably crash minimized Chromiums' uBlock Origin. ?!
mozregression --repo autoland --launch 270edd51781f90cd532edbf9c6dbcfe588d71242 --pref layers.gpu-process.enabled:false gfx.webrender.panic-on-gl-error:true widget.disable-native-theme-for-content:true layout.css.backdrop-filter.enabled:true -a https://bug1654901.bmoattachments.org/attachment.cgi?id=9165761

Restricting because creepy.

A Pernosco session is available here: https://pernos.co/debug/IJ7L-geUb0_70l64BzP75A/index.html

==46029==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x7fe97768abeb bp 0x7fe953aacb30 sp 0x7fe953aac6f0 T27)
==46029==The signal is caused by a WRITE memory access.

From googling it doesn't sound wild as long it's a null pointer(?). Memory usage just shortly explodes to the maximum available 7.7 GB RAM. Were my Nightly and Chromium's uBlock Origin just OOMing?

the problem was that paths that determined visibility were not switching it off
on the primitive instance. Now it's moved one level higher.

(In reply to Jan Andre Ikenmeyer [:darkspirit] from comment #4)

I'm unsure about this observation, but it seemed creepy to me:
During running mozregression my regular (minimized) Nightly crashed/closed without report - multiple times.

That seems like a separate issue?
I don't think the original debug assertion should be considered a security problem.

https://hg.mozilla.org/integration/autoland/rev/5e5b664a9b5ecba443472c38b1100bae3ab55c9e
https://hg.mozilla.org/mozilla-central/rev/5e5b664a9b5e

(In reply to Dzmitry Malyshau [:kvark] from comment #10)

I don't think the original debug assertion should be considered a security problem.

Verified as fixed. Thanks! Please unhide this bug then. I'm just a bot in this regard.