[Bug 13438] New: found overlapping data buffer

[bugzilla-daemon@bugzilla.kernel.org]

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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