[Bug 13438] New: found overlapping data buffer

[Bug 13438] New: found overlapping data buffer

[bugzilla-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=13438

           Summary: found overlapping data buffer
           Product: SCSI Drivers
           Version: 2.5
    Kernel Version: 2.6.29.3
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: QLOGIC QLA2XXX
        AssignedTo: scsi_drivers-qla2xxx@kernel-bugs.osdl.org
        ReportedBy: ettl.martin@gmx.de
        Regression: No


Hello,

i detected an overlapping data buffer at file 
"[linux-2.6.29.3/drivers/scsi/qla2xxx/qla_attr.c"
For detection, i used the static code analysis tool cppcheck. It prints the
following message:
[linux-2.6.29.3/drivers/scsi/qla2xxx/qla_attr.c:545]: (error) Overlapping data
buffer buf


Take a loop at file qla_attr.c at line 545:

        return snprintf(buf, PAGE_SIZE, "%s\n", buf);

Here, buf is used by iteself, this is dangerous!!!!

Best regards

Ettl Martin

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[Bug 13438] found overlapping data buffer

[bugzilla-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=13438


Alan <alan@lxorguk.ukuu.org.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |alan@lxorguk.ukuu.org.uk
         Resolution|                            |PATCH_ALREADY_AVAILABLE




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[Bug 13438] found overlapping data buffer

[bugzilla-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=13438


Alan <alan@lxorguk.ukuu.org.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED




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[Bug 13438] found overlapping data buffer

[bugzilla-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=13438


Marc Bejarano <bugzilla.kernel.org@beej.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bugzilla.kernel.org@beej.or
                   |                            |g




--- Comment #1 from Marc Bejarano <bugzilla.kernel.org@beej.org>  2009-06-18 04:49:18 ---
patch: http://permalink.gmane.org/gmane.linux.scsi/51819

Status: CLOSED PATCH_ALREADY_AVAILABLE hardly seems fair since the patch was
posted after the report, no?

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[Bug 13438] found overlapping data buffer

[bugzilla-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=13438





--- Comment #2 from Martin Ettl <ettl.martin@gmx.de>  2009-06-18 07:59:02 ---
Yes, life is not fair :-(

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[Bug 13438] found overlapping data buffer

[bugzilla-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=13438


Alan <alan@lxorguk.ukuu.org.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|PATCH_ALREADY_AVAILABLE     |CODE_FIX




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