* [Bug runtime/31053] New: The stap runtime's allocator might sleep in atomic contexts
@ 2023-11-11 7:19 agentzh at gmail dot com
2023-11-14 20:50 ` [Bug runtime/31053] " agentzh at gmail dot com
0 siblings, 1 reply; 2+ messages in thread
From: agentzh at gmail dot com @ 2023-11-11 7:19 UTC (permalink / raw)
To: systemtap
https://sourceware.org/bugzilla/show_bug.cgi?id=31053
Bug ID: 31053
Summary: The stap runtime's allocator might sleep in atomic
contexts
Product: systemtap
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: runtime
Assignee: systemtap at sourceware dot org
Reporter: agentzh at gmail dot com
Target Milestone: ---
Currently, the `STP_ALLOC_FLAGS` flag used in the stap kernel runtime's
allocator actually includes __GFP_IO and __GFP_FS flags which might sleep. All
kernels since 3.10 would trigger this bug. But the STP_ALLOC_FLAGS is supposed
to be used "anywhere", including atomic contexts, according to the existing
code comment:
```
/* Default, and should be "safe" from anywhere. */
```
I'll fix it in a patch. Glad we drop support for the 2.6 kernels so we can
remove a lot of baggage here.
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* [Bug runtime/31053] The stap runtime's allocator might sleep in atomic contexts
2023-11-11 7:19 [Bug runtime/31053] New: The stap runtime's allocator might sleep in atomic contexts agentzh at gmail dot com
@ 2023-11-14 20:50 ` agentzh at gmail dot com
0 siblings, 0 replies; 2+ messages in thread
From: agentzh at gmail dot com @ 2023-11-14 20:50 UTC (permalink / raw)
To: systemtap
https://sourceware.org/bugzilla/show_bug.cgi?id=31053
agentzh <agentzh at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #1 from agentzh <agentzh at gmail dot com> ---
Fixed in commit 13654ecdb.
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2023-11-11 7:19 [Bug runtime/31053] New: The stap runtime's allocator might sleep in atomic contexts agentzh at gmail dot com
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