Jann Horn b9472f7d82 firmware: xilinx: fix debugfs write handler ... - Userspace wants to write a string with `len` bytes, not counting the terminating NULL, so we should allocate `len+1` bytes. It looks like the current code relied on having a nullbyte directly behind `kern_buff`, which happens to work reliably as long as `len` isn't one of the kmalloc size classes. - strncpy_from_user() is completely wrong here; userspace is giving us a (not necessarily null-terminated) buffer and its length. strncpy_from_user() is for cases in which we don't know the length. - Don't let broken userspace allocate arbitrarily big kmalloc allocations. Just use memdup_user_nul(), which is designed precisely for things like this. Signed-off-by: Jann Horn <jannh@google.com> Acked-by: Jolly Shah <jolly.shah@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com>		2019-03-18 13:43:54 +01:00
..
Kconfig	drivers: soc: xilinx: Add ZynqMP power domain driver	2019-02-12 13:38:16 +01:00
Makefile	firmware: xilinx: Add debugfs interface	2018-09-26 08:47:35 +02:00
zynqmp-debug.c	firmware: xilinx: fix debugfs write handler	2019-03-18 13:43:54 +01:00
zynqmp-debug.h	firmware: xilinx: Add debugfs interface	2018-09-26 08:47:35 +02:00
zynqmp.c	drivers: soc: xilinx: Add ZynqMP power domain driver	2019-02-12 13:38:16 +01:00