On Wed, Sep 09, 2015 at 12:13:10PM +0200, Maurizio Lombardi wrote: > When printing a bitmap using the "%*pb[l]" printk format > a 16 bit variable (field_width) is used to store the size of the bitmap. > In some cases 16 bits are not sufficient, the variable overflows and > printk does not work as expected. > > This patch fixes the problem by changing the type of field_width to s32. > > How to reproduce the bug: > > 1.load scsi_debug > # modprobe scsi-debug dev_size_mb=256 lbpu=1 lbpws10=1 > > 2.create VG > # vgcreate tsvg /dev/sdb > Physical volume "/dev/sdb" successfully created > Volume group "tsvg" successfully created > > 3. Bitmap should be set, but still empty > # cat /sys/bus/pseudo/drivers/scsi_debug/map > > Expected results: > # cat /sys/bus/pseudo/drivers/scsi_debug/map > 0-15 > > Signed-off-by: Maurizio Lombardi <mlomb...@redhat.com>
Acked-by: Tejun Heo <t...@kernel.org> Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
