Bug 203305 - [testmgr] New test framework is causing a hang with CONFIG_HARDENED_USERCOPY_PAGESPAN enabled
Summary: [testmgr] New test framework is causing a hang with CONFIG_HARDENED_USERCOPY_...
Status: NEW
Alias: None
Product: Other
Classification: Unclassified
Component: Modules (show other bugs)
Hardware: x86-64 Linux
: P1 high
Assignee: other_modules
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2019-04-14 16:56 UTC by Ivan Bulatovic
Modified: 2019-04-14 17:02 UTC (History)
1 user (show)

See Also:
Kernel Version: 5.1.0-rc1
Subsystem:
Regression: No
Bisected commit-id:

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Description Ivan Bulatovic 2019-04-14 16:56:42 UTC 
After bisecting to commit 4e7babba30d820c4195b1d58cf51dce3c22ecf2b:

crypto: testmgr - convert skcipher testing to use testvec_configs

and getting a glimpse of the error during one of the bisect runs (otherwise I didn't get any errors, kernel hangs without any warnings before KMS kicks in), HARDENED_USERCOPY_PAGESPAN probably does what it's supposed to do and the system hangs up. 

Now, it does state that it should be used only to find such use-cases before they eventually get removed and this one is new (or dusted off an old one), I don't have a trace - but I thought I should report it all the same.

Should be easy enough to reproduce...

Ivan
Comment 1 Ivan Bulatovic 2019-04-14 17:02:10 UTC 
Adding Herbert, couldn't find Eric with 100% certainty...
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