Fwd: New Defects reported by Coverity Scan for Linux

[Richard Weinberger <richard@nod.at>]

Andrea,

please check. The same pattern seems to be used more than once in this driver.

Thanks,
//richard

----------  Weitergeleitete Nachricht  ----------

Betreff: New Defects reported by Coverity Scan for Linux
Datum: Montag, 27. November 2017, 08:49:21 CET
Von: scan-admin@coverity.com
An: richard@nod.at



Hi,

Please find the latest report on new defect(s) introduced to Linux, under 
component 'Drivers-MTD',  found with Coverity Scan.

1 new defect(s) introduced to Linux, under component 'Drivers-MTD',  found 
with Coverity Scan.
344 defect(s), reported by Coverity Scan earlier, were marked fixed in the 
recent build analyzed by Coverity Scan.

New defect(s) Reported-by: Coverity Scan
Showing 1 of 1 defect(s)


** CID 1424016:  Integer handling issues  (OVERFLOW_BEFORE_WIDEN)
/drivers/mtd/parsers/sharpslpart.c: 195 in sharpsl_nand_init_ftl()


________________________________________________________________________________________________________
*** CID 1424016:  Integer handling issues  (OVERFLOW_BEFORE_WIDEN)
/drivers/mtd/parsers/sharpslpart.c: 195 in sharpsl_nand_init_ftl()
189     	/* initialize ftl->log2phy */
190     	for (i = 0; i < ftl->logmax; i++)
191     		ftl->log2phy[i] = UINT_MAX;
192     
193     	/* create physical-logical table */
194     	for (block_num = 0; block_num < phymax; block_num++) {
>>>     CID 1424016:  Integer handling issues  (OVERFLOW_BEFORE_WIDEN)
>>>     Potentially overflowing expression "block_num * mtd->erasesize" with 
type "unsigned int" (32 bits, unsigned) is evaluated using 32-bit arithmetic, 
and then used in a context that expects an expression of type "loff_t" (64 
bits, signed).
195     		block_adr = block_num * mtd->erasesize;
196     
197     		if (mtd_block_isbad(mtd, block_adr))
198     			continue;
199     
200     		if (sharpsl_nand_read_oob(mtd, block_adr, oob))


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