Alexandre Ghiti 25abe0db92 riscv: Fix kfence now that the linear mapping can be backed by PUD/P4D/PGD ... RISC-V Kfence implementation used to rely on the fact the linear mapping was backed by at most PMD hugepages, which is not true anymore since commit 3335068f87 ("riscv: Use PUD/P4D/PGD pages for the linear mapping"). Instead of splitting PUD/P4D/PGD mappings afterwards, directly map the kfence pool region using PTE mappings by allocating this region before setup_vm_final(). Reported-by: syzbot+a74d57bddabbedd75135@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=a74d57bddabbedd75135 Fixes: 3335068f87 ("riscv: Use PUD/P4D/PGD pages for the linear mapping") Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com> Link: https://lore.kernel.org/r/20230606130444.25090-1-alexghiti@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>		2023-06-07 07:13:53 -07:00
..
asm	riscv: Fix kfence now that the linear mapping can be backed by PUD/P4D/PGD	2023-06-07 07:13:53 -07:00
uapi/asm	KVM/riscv changes for 6.4	2023-05-05 06:11:48 -04:00