tree 506610330846b1dacc66b105ac548aa86c2d8d71
parent 52110432ba5e631b65b7791f81ffcc9dc588b28c
author Rohit Vaswani <rvaswani@codeaurora.org> 1442536093 -0700
committer Wong Johnny <johnny.wong@hi-p.com> 1502872728 +0800

mm: Fix incorrect type conversion for size during dma allocation

This was found during userspace fuzzing test when a large size
allocation is made from ion

[<ffffffc00008a098>] show_stack+0x10/0x1c
[<ffffffc00119c390>] dump_stack+0x74/0xc8
[<ffffffc00020d9a0>] kasan_report_error+0x2b0/0x408
[<ffffffc00020dbd4>] kasan_report+0x34/0x40
[<ffffffc00020cfec>] __asan_storeN+0x15c/0x168
[<ffffffc00020d228>] memset+0x20/0x44
[<ffffffc00009b730>] __dma_alloc_coherent+0x114/0x18c
[<ffffffc00009c6e8>] __dma_alloc_noncoherent+0xbc/0x19c
[<ffffffc000c2b3e0>] ion_cma_allocate+0x178/0x2f0
[<ffffffc000c2b750>] ion_secure_cma_allocate+0xdc/0x190
[<ffffffc000c250dc>] ion_alloc+0x264/0xb88
[<ffffffc000c25e94>] ion_ioctl+0x1f4/0x480
[<ffffffc00022f650>] do_vfs_ioctl+0x67c/0x764
[<ffffffc00022f790>] SyS_ioctl+0x58/0x8c

FPIIM-1543

Change-Id: Idc9c19977a8cc62c7d092f689d30368704b400bc
Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>