tree: git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc.git next
head: f397c8d80a5e413984bd9ccdf4161c7156b365ce
commit: f397c8d80a5e413984bd9ccdf4161c7156b365ce [134/134] mmc: block: Move files to core
coccinelle warnings: (new ones prefixed by >>)
>> drivers/mmc/core/block.c:342:14-21: WARNING opportunity for memdup_user
vim +342 drivers/mmc/core/block.c
cb87ea28 drivers/mmc/card/block.c John Calixto 2011-04-26 326 if (copy_from_user(&idata->ic, user, sizeof(idata->ic))) {
cb87ea28 drivers/mmc/card/block.c John Calixto 2011-04-26 327 err = -EFAULT;
aea253ec drivers/mmc/card/block.c Vladimir Motyka 2011-05-11 328 goto idata_err;
cb87ea28 drivers/mmc/card/block.c John Calixto 2011-04-26 329 }
cb87ea28 drivers/mmc/card/block.c John Calixto 2011-04-26 330
cb87ea28 drivers/mmc/card/block.c John Calixto 2011-04-26 331 idata->buf_bytes = (u64) idata->ic.blksz * idata->ic.blocks;
cb87ea28 drivers/mmc/card/block.c John Calixto 2011-04-26 332 if (idata->buf_bytes > MMC_IOC_MAX_BYTES) {
cb87ea28 drivers/mmc/card/block.c John Calixto 2011-04-26 333 err = -EOVERFLOW;
aea253ec drivers/mmc/card/block.c Vladimir Motyka 2011-05-11 334 goto idata_err;
cb87ea28 drivers/mmc/card/block.c John Calixto 2011-04-26 335 }
cb87ea28 drivers/mmc/card/block.c John Calixto 2011-04-26 336
bfe5b1b1 drivers/mmc/card/block.c Ville Viinikka 2016-07-08 337 if (!idata->buf_bytes) {
bfe5b1b1 drivers/mmc/card/block.c Ville Viinikka 2016-07-08 338 idata->buf = NULL;
4d6144de drivers/mmc/card/block.c Johan Rudholm 2011-11-23 339 return idata;
bfe5b1b1 drivers/mmc/card/block.c Ville Viinikka 2016-07-08 340 }
4d6144de drivers/mmc/card/block.c Johan Rudholm 2011-11-23 341
1ff8950c drivers/mmc/card/block.c yalin wang 2015-11-12 @342 idata->buf = kmalloc(idata->buf_bytes, GFP_KERNEL);
cb87ea28 drivers/mmc/card/block.c John Calixto 2011-04-26 343 if (!idata->buf) {
cb87ea28 drivers/mmc/card/block.c John Calixto 2011-04-26 344 err = -ENOMEM;
aea253ec drivers/mmc/card/block.c Vladimir Motyka 2011-05-11 345 goto idata_err;
cb87ea28 drivers/mmc/card/block.c John Calixto 2011-04-26 346 }
cb87ea28 drivers/mmc/card/block.c John Calixto 2011-04-26 347
cb87ea28 drivers/mmc/card/block.c John Calixto 2011-04-26 348 if (copy_from_user(idata->buf, (void __user *)(unsigned long)
cb87ea28 drivers/mmc/card/block.c John Calixto 2011-04-26 349 idata->ic.data_ptr, idata->buf_bytes)) {
cb87ea28 drivers/mmc/card/block.c John Calixto 2011-04-26 350 err = -EFAULT;
:::::: The code at line 342 was first introduced by commit
:::::: 1ff8950c04331883b11c5e0d6db96e2da8b6f8c9 mmc: block: change to use kmalloc when copy data from userspace
:::::: TO: yalin wang <yalin.wang2010@xxxxxxxxx>
:::::: CC: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
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