On Tue, 9 Nov 2021 13:57:27 -0500, George Kennedy wrote:
> Change min_t() to use type "u32" instead of type "int" to
> avoid stack out of bounds. With min_t() type "int" the values get
> sign extended and the larger value gets used causing stack out of bounds.
>
> BUG: KASAN: stack-out-of-bounds in memcpy include/linux/fortify-string.h:191 [inline]
> BUG: KASAN: stack-out-of-bounds in sg_copy_buffer+0x1de/0x240 lib/scatterlist.c:976
> Read of size 127 at addr ffff888072607128 by task syz-executor.7/18707
>
> [...]
Applied to 5.16/scsi-fixes, thanks!
[1/1] scsi: scsi_debug: fix type in min_t to avoid stack OOB
https://git.kernel.org/mkp/scsi/c/36e07d7ede88
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Martin K. Petersen Oracle Linux Engineering
