Message285921
| Author |
Zach Riggle |
| Recipients |
Zach Riggle |
| Date |
2017-01-20.20:48:07 |
| SpamBayes Score |
-1.0 |
| Marked as misclassified |
Yes |
| Message-id |
<1484945288.47.0.935636853008.issue29335@psf.upfronthosting.co.za> |
| In-reply-to |
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| Content |
The attached script hits some "This should never happen" code in the subprocess module.
These lines here:
https://github.com/python/cpython/blob/2.7/Lib/subprocess.py#L1036-L1038
The root cause is a lack of checking WIFSTOPPED and WSTOPSIG in the handler.
When a process elects into being ptraced via PTRACE_TRACEME, it is stopped on the SIGSEGV instead of terminating, allowing the user to attach a debugger before the kernel destroys the process.
This bug makes it impossible to wait on any process which crashes, which is set up to wait for a debugger. |
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History
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| Date |
User |
Action |
Args |
| 2017-01-20 20:48:08 | Zach Riggle | set | recipients:
+ Zach Riggle |
| 2017-01-20 20:48:08 | Zach Riggle | set | messageid: <1484945288.47.0.935636853008.issue29335@psf.upfronthosting.co.za> |
| 2017-01-20 20:48:08 | Zach Riggle | link | issue29335 messages |
| 2017-01-20 20:48:08 | Zach Riggle | create | |
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