kernel.git/arch/riscv/kernel/process.c, branch linux-4.19.y

riscv: process: fix kernel info leakage

2022-11-25T16:40:18Z

[ Upstream commit 6510c78490c490a6636e48b61eeaa6fb65981f4b ] thread_struct's s[12] may contain random kernel memory content, which may be finally leaked to userspace. This is a security hole. Fix it by clearing the s[12] array in thread_struct when fork. As for kthread case, it's better to clear the s[12] array as well. Fixes: 7db91e57a0ac ("RISC-V: Task implementation") Signed-off-by: Jisheng Zhang Tested-by: Guo Ren Link: https://lore.kernel.org/r/20221029113450.4027-1-jszhang@kernel.org Reviewed-by: Guo Ren Link: https://lore.kernel.org/r/CAJF2gTSdVyAaM12T%2B7kXAdRPGS4VyuO08X1c7paE-n4Fr8OtRA@mail.gmail.com/ Signed-off-by: Palmer Dabbelt Signed-off-by: Sasha Levin

Merge branch 'work.whack-a-mole' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2018-02-01T03:18:12Z

Pull asm/uaccess.h whack-a-mole from Al Viro: "It's linux/uaccess.h, damnit... Oh, well - eventually they'll stop cropping up..." * 'work.whack-a-mole' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: asm-prototypes.h: use linux/uaccess.h, not asm/uaccess.h riscv: use linux/uaccess.h, not asm/uaccess.h... ppc: for put_user() pull linux/uaccess.h, not asm/uaccess.h

riscv: rename SR_* constants to match the spec

2018-01-07T23:14:39Z

Signed-off-by: Christoph Hellwig Signed-off-by: Palmer Dabbelt

riscv: use linux/uaccess.h, not asm/uaccess.h...

2017-12-04T23:01:01Z

Signed-off-by: Al Viro

RISC-V: Task implementation

2017-09-26T22:26:46Z

This patch contains the implementation of tasks on RISC-V, most of which is involved in task switching. Signed-off-by: Palmer Dabbelt