* [Bug runtime/31051] New: Error handling is incomplete in the early uprobe registration code
@ 2023-11-11 5:50 agentzh at gmail dot com
2023-11-14 19:39 ` [Bug runtime/31051] " agentzh at gmail dot com
2023-11-14 20:49 ` agentzh at gmail dot com
0 siblings, 2 replies; 3+ messages in thread
From: agentzh at gmail dot com @ 2023-11-11 5:50 UTC (permalink / raw)
To: systemtap
https://sourceware.org/bugzilla/show_bug.cgi?id=31051
Bug ID: 31051
Summary: Error handling is incomplete in the early uprobe
registration code
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: ---
Systemtap 5.0 introduced the early uprobe registration (module init time) as a
performance optimization. Unfortunately, it does not handle the errors very
well. For example, when uprobe_register() failed, there would be memory leaks
and leftover uprobes (resulting in kernel panics).
I'll prepare a patch to address this new regression.
--
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You are the assignee for the bug.
^ permalink raw reply [flat|nested] 3+ messages in thread* [Bug runtime/31051] Error handling is incomplete in the early uprobe registration code 2023-11-11 5:50 [Bug runtime/31051] New: Error handling is incomplete in the early uprobe registration code agentzh at gmail dot com @ 2023-11-14 19:39 ` agentzh at gmail dot com 2023-11-14 20:49 ` agentzh at gmail dot com 1 sibling, 0 replies; 3+ messages in thread From: agentzh at gmail dot com @ 2023-11-14 19:39 UTC (permalink / raw) To: systemtap https://sourceware.org/bugzilla/show_bug.cgi?id=31051 --- Comment #1 from agentzh <agentzh at gmail dot com> --- In response to fche's request, below is a minimal test case that reproduces the memory leaks and uprobe leaks: https://gist.github.com/agentzh/814dafd2d6c8a661c7d23cbdc96e5d28 -- You are receiving this mail because: You are the assignee for the bug. ^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug runtime/31051] Error handling is incomplete in the early uprobe registration code 2023-11-11 5:50 [Bug runtime/31051] New: Error handling is incomplete in the early uprobe registration code agentzh at gmail dot com 2023-11-14 19:39 ` [Bug runtime/31051] " agentzh at gmail dot com @ 2023-11-14 20:49 ` agentzh at gmail dot com 1 sibling, 0 replies; 3+ messages in thread From: agentzh at gmail dot com @ 2023-11-14 20:49 UTC (permalink / raw) To: systemtap https://sourceware.org/bugzilla/show_bug.cgi?id=31051 agentzh <agentzh at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |FIXED Status|UNCONFIRMED |RESOLVED --- Comment #2 from agentzh <agentzh at gmail dot com> --- Fixed in commit 0fef0bd60ff4 -- You are receiving this mail because: You are the assignee for the bug. ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2023-11-14 20:49 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2023-11-11 5:50 [Bug runtime/31051] New: Error handling is incomplete in the early uprobe registration code agentzh at gmail dot com 2023-11-14 19:39 ` [Bug runtime/31051] " agentzh at gmail dot com 2023-11-14 20:49 ` agentzh at gmail dot com
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