Bug 1896513 Comment 6 Edit History

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Original comment by
on 
Can reproduce, after opening the PDF, it is unable to render anything. Sometimes the pdf loads, but once I scroll, the PDF blacks out. Works fine on desktop. This could potentially be the crash log:

```
GeckoViewProgressDelegate[C]: handleEvent: MozAfterPaint
GeckoViewProgressDelegate[C]: handleEvent: MozAfterPaint
GeckoViewProgress: receiveMessage: MozAfterPaint
GeckoViewProgress: receiveMessage: MozAfterPaint
MOZ_CRASH: [17278] Hit MOZ_CRASH(assertion failed: !(vecTangent * vecTangent < rLastTangentFuzz)) at /Users/clu/Desktop/gecko/third_party/rust/aa-stroke/src/bezierflattener.rs:824
libc    : Fatal signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x0 in tid 17316 (CanvasRenderer), pid 17278 (fenix.debug:gpu)
crash_dump64: obtaining output fd from tombstoned, type: kDebuggerdTombstone
tombstoned: received crash request for pid 17316
crash_dump64: performing dump of process 17278 (target tid = 17316)
DEBUG   : *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
DEBUG   : Build fingerprint: 'google/sdk_gphone_arm64/emulator_arm64:11/RSR1.210722.013.A4/10160917:userdebug/dev-keys'
DEBUG   : Revision: '0'
DEBUG   : ABI: 'arm64'
DEBUG   : Timestamp: 2024-05-18 06:32:12-0500
DEBUG   : pid: 17278, tid: 17316, name: CanvasRenderer  >>> org.mozilla.fenix.debug:gpu <<<
DEBUG   : uid: 10196
DEBUG   : signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x0
DEBUG   : Cause: null pointer dereference
DEBUG   : Abort message: '[17278] Hit MOZ_CRASH(assertion failed: !(vecTangent * vecTangent < rLastTangentFuzz)) at /Users/clu/Desktop/gecko/third_party/rust/aa-stroke/src/bezierflattener.rs:824
```

Looks like the same bug as 1813354 and 1805557, redirecting to the graphics team. This is affecting PDF viewing on Android.
Revision 1 by
on 
Can reproduce, after opening the PDF, it is unable to render anything. Sometimes the pdf loads, but once I scroll, the PDF blacks out. Works fine on desktop. This could potentially be the crash log:

```
GeckoViewProgressDelegate[C]: handleEvent: MozAfterPaint
GeckoViewProgressDelegate[C]: handleEvent: MozAfterPaint
GeckoViewProgress: receiveMessage: MozAfterPaint
GeckoViewProgress: receiveMessage: MozAfterPaint
MOZ_CRASH: [17278] Hit MOZ_CRASH(assertion failed: !(vecTangent * vecTangent < rLastTangentFuzz)) at /Users/clu/Desktop/gecko/third_party/rust/aa-stroke/src/bezierflattener.rs:824
libc    : Fatal signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x0 in tid 17316 (CanvasRenderer), pid 17278 (fenix.debug:gpu)
crash_dump64: obtaining output fd from tombstoned, type: kDebuggerdTombstone
tombstoned: received crash request for pid 17316
crash_dump64: performing dump of process 17278 (target tid = 17316)
DEBUG   : *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
DEBUG   : Build fingerprint: 'google/sdk_gphone_arm64/emulator_arm64:11/RSR1.210722.013.A4/10160917:userdebug/dev-keys'
DEBUG   : Revision: '0'
DEBUG   : ABI: 'arm64'
DEBUG   : Timestamp: 2024-05-18 06:32:12-0500
DEBUG   : pid: 17278, tid: 17316, name: CanvasRenderer  >>> org.mozilla.fenix.debug:gpu <<<
DEBUG   : uid: 10196
DEBUG   : signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x0
DEBUG   : Cause: null pointer dereference
DEBUG   : Abort message: '[17278] Hit MOZ_CRASH(assertion failed: !(vecTangent * vecTangent < rLastTangentFuzz)) at /Users/clu/Desktop/gecko/third_party/rust/aa-stroke/src/bezierflattener.rs:824
```

Looks like the same bug as [1813354](https://bugzilla.mozilla.org/show_bug.cgi?id=1813354) and [1805557](https://bugzilla.mozilla.org/show_bug.cgi?id=1805557), redirecting to the graphics team. This is affecting PDF viewing on Android.

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