[Bug 278566] devel/valgrind: __sysctlbyname looks like false positive detect
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Date: Wed, 24 Apr 2024 13:55:28 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=278566 Bug ID: 278566 Summary: devel/valgrind: __sysctlbyname looks like false positive detect Product: Ports & Packages Version: Latest Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: Individual Port(s) Assignee: ports-bugs@FreeBSD.org Reporter: rozhuk.im@gmail.com CC: pjfloyd@wanadoo.fr CC: pjfloyd@wanadoo.fr Flags: maintainer-feedback?(pjfloyd@wanadoo.fr) Attachment #250205 text/plain mime type: Created attachment 250205 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=250205&action=edit example code --90284-- Set osrel for current process with value 1400511 ==90284== Syscall param __sysctlbyname(name) points to uninitialised byte(s) ==90284== at 0x4992CDA: __sysctlbyname (in /lib/libc.so.7) ==90284== by 0x20185F: main (in /home/rim/docs/Progs/FreeBSD/sysctlbyname_broken) ==90284== Address 0x1ffc000466 is on thread 1's stack ==90284== in frame #1, created by main (???:) ==90284== Uninitialised value was created by a stack allocation ==90284== at 0x2017F0: main (in /home/rim/docs/Progs/FreeBSD/sysctlbyname_broken) ==90284== But in way that it used some args OUT only (kernel only write result), and all 100% bytes are initialized. -- You are receiving this mail because: You are the assignee for the bug.