Date: Fri, 14 Oct 2011 08:28:25 GMT From: Dietmar Schmidt <dietmar.schmidt@hob.de> To: freebsd-gnats-submit@FreeBSD.org Subject: ports/161578: strace is not working Message-ID: <201110140828.p9E8SPv3037792@red.freebsd.org> Resent-Message-ID: <201110140830.p9E8UBg5069469@freefall.freebsd.org>
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>Number: 161578
>Category: ports
>Synopsis: strace is not working
>Confidential: no
>Severity: non-critical
>Priority: high
>Responsible: freebsd-ports-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Fri Oct 14 08:30:11 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator: Dietmar Schmidt
>Release: 8.2, 9.0-BETA3
>Organization:
>Environment:
FreeBSD X.X.X 8.2-RELEASE FreeBSD 8.2-RELEASE #0: Fri Feb 18 02:24:46 UTC 2011 root@almeida.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC i386
>Description:
strace is not working in newer FreeBSD versions.
In 8.0 FreeBSD works as expected.
in 8.2 and 9.0-BETA3 strace does not work. Not sure for 8.1, sorry.
The output of strace is "pread: Device busy" for every syscall?
and
"PIOCRUN: Input/output error
trouble opening proc file"
at the end of the strace output.
I know about truss and ktrace, but we use strace for compatibility with other unixes/linux.
>How-To-Repeat:
strace ps
strace ls
>Fix:
The error occurs in syscall.c line 1300
if (pread(tcp->pfd_reg, ®s, sizeof(regs), 0) < 0) {
unsure how to fix it.
>Release-Note:
>Audit-Trail:
>Unformatted:
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