https://bugs.kde.org/show_bug.cgi?id=503641
Bug ID: 503641
Summary: close_range syscalls started failing with 3.25.0
Classification: Developer tools
Product: valgrind
Version: 3.25.0
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: jsew...@acm.org
Reporter: cmb...@sent.com
Target Milestone: ---
SUMMARY
I run xfce4-session in Valgrind. After upgrading to 3.25.0, I see errors like
this:
xfce4-session-WARNING **: 22:03:59.181: Unable to launch "xfwm4": Failed to
close file descriptor for child process (Invalid argument)
xfce4-session-WARNING **: 22:03:59.328: Unable to launch "xfsettingsd": Failed
to close file descriptor for child process (Invalid argument)
I ran a bisection and found that the errors started with commit
d984d9aabe5b89d6787c2604b72c09360e7b6fc0:
https://sourceware.org/git/?p=valgrind.git;a=commitdiff;h=d984d9aabe5b89d6787c2604b72c09360e7b6fc0
Here's an example syscall trace before that commit:
SYSCALL[15385,1](436) sys_close_range ( 4, 4294967295, 0 ) --> [pre-success]
Success(0x0)
And a trace after that commit:
SYSCALL[29937,1](436) sys_close_range ( 4, 4294967295, 0 ) --> [pre-fail]
Failure(0x16)
It seems like changing the first and last parameters to signed ints is causing
the failures.
SOFTWARE/OS VERSIONS
Valgrind 3.25.0 on Arch Linux
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