New issue
Advanced search Search tips
Note: Color blocks (like or ) mean that a user may not be available. Tooltip shows the reason.

Issue 898193 link

Starred by 1 user

Issue metadata

Status: Verified
Owner:
Last visit > 30 days ago
Closed: Oct 24
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



Sign in to add a comment

Null-dereference READ in content::RenderWidgetHostImpl::OnHasTouchEventHandlers

Project Member Reported by ClusterFuzz, Oct 23

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6557604032282624

Fuzzer: mbarbella_js_mutation_layout
Job Type: linux_msan_content_shell_drt
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  content::RenderWidgetHostImpl::OnHasTouchEventHandlers
  bool IPC::MessageT<WidgetHostMsg_HasTouchEventHandlers_Meta, std::__1::tuple<boo
  content::RenderWidgetHostImpl::OnMessageReceived
  
Sanitizer: memory (MSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_msan_content_shell_drt&range=599040:599060

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6557604032282624

Issue filed automatically.

See https://github.com/google/clusterfuzz-tools for more information.
 
Project Member

Comment 1 by ClusterFuzz, Oct 23

Components: Internals>Core
Labels: Test-Predator-Auto-Components
Automatically applying components based on crash stacktrace and information from OWNERS files.

If this is incorrect, please apply the Test-Predator-Wrong-Components label.
Project Member

Comment 2 by ClusterFuzz, Oct 23

Cc: ajwong@chromium.org
Labels: Test-Predator-Auto-CC
Automatically adding ccs based on suspected regression changelists:

Remove RWH null-checks for input_router_. by ajwong@chromium.org - https://chromium.googlesource.com/chromium/src/+/b49966db7f4fad6ec98c39965b74a9cc1aeb11a3

Add InputEventShim for intercepting RWH messages. by ajwong@chromium.org - https://chromium.googlesource.com/chromium/src/+/eb28e7e34aba87013ba804e64faa214cce5caf94

If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs label.
Cc: -ajwong@chromium.org kkaluri@chromium.org
Labels: M-72
Owner: ajwong@chromium.org
Status: Assigned (was: Untriaged)
Predator has provided 2 possible suspects which ahas same authour

Suspect CL: https://chromium.googlesource.com/chromium/src/+/b49966db7f4fad6ec98c39965b74a9cc1aeb11a3

ajwong@ Could you please look into it
Project Member

Comment 4 by ClusterFuzz, Oct 24

ClusterFuzz has detected this issue as fixed in range 602132:602146.

Detailed report: https://clusterfuzz.com/testcase?key=6557604032282624

Fuzzer: mbarbella_js_mutation_layout
Job Type: linux_msan_content_shell_drt
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  content::RenderWidgetHostImpl::OnHasTouchEventHandlers
  bool IPC::MessageT<WidgetHostMsg_HasTouchEventHandlers_Meta, std::__1::tuple<boo
  content::RenderWidgetHostImpl::OnMessageReceived
  
Sanitizer: memory (MSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_msan_content_shell_drt&range=599040:599060
Fixed: https://clusterfuzz.com/revisions?job=linux_msan_content_shell_drt&range=602132:602146

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6557604032282624

See https://github.com/google/clusterfuzz-tools for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.
Project Member

Comment 5 by ClusterFuzz, Oct 24

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 6557604032282624 is verified as fixed, so closing issue as verified.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.

Sign in to add a comment