Bug #11481: Segmentation fault when thread is killed during `require`.

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 2.2.3p173 (2015-08-18 revision 51636) [x86_64-linux]
• Backport: 2.0.0: REQUIRED, 2.1: REQUIRED, 2.2: DONE

[t-8ch (Thomas Weißschuh)]

One of a library used by us executes open from uri-open in multiple thread in parallel under a timeout.
open-uri implicitly requires net/http. When the import machinery is killed during performing an import this will lead to a segfault further down the line.

I readily accept that it is very poor practice to do require in a loop which is suspect to uncatchable exceptions,
But unfortunately the user has no idea that requires are performed.

The test.rb script from the attachements triggers this bug. You may want to spawn less threads. The high number was chosen to improve the rate of triggering the bug.

We tested this on ruby 2.1.5p273 as shipped with debian Jessie. And ruby 2.2.3p173 from ArchLinux.

[t-8ch (Thomas Weißschuh)]

• File backtrace.symbols backtrace.symbols added

[nagachika (Tomoyuki Chikanaga)]

• Related to Bug #11404: Segfault when 'throw' occurs while loading a Ruby source file [PATCH] added

[nagachika (Tomoyuki Chikanaga)]

[But #11404] seems the similar issue and fixed on trunk.

[nagachika (Tomoyuki Chikanaga)]

• Status changed from Open to Closed
• Backport changed from 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN to 2.0.0: REQUIRED, 2.1: REQUIRED, 2.2: REQUIRED

[nagachika (Tomoyuki Chikanaga)]

• Backport changed from 2.0.0: REQUIRED, 2.1: REQUIRED, 2.2: REQUIRED to 2.0.0: REQUIRED, 2.1: REQUIRED, 2.2: DONE

r51292, r51439 and r51440 were backported into ruby_2_2 branch at r52655.

[nagachika (Tomoyuki Chikanaga)]

Backport r51445 into ruby_2_2 branch at r52661 to suppress warning in CI.