diff options
| author | Ingo Molnar <mingo@kernel.org> | 2020-06-26 12:24:42 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-06-26 12:24:42 +0200 |
| commit | 2c92d787cc9fad57d05c96bd117782183768258a (patch) | |
| tree | 51c0c567b8be2fd56073a8ce31f8ebd123a7d562 /arch/riscv/kernel/sys_riscv.c | |
| parent | 145a773aef83181d47ebab21bb33c89233aadb1e (diff) | |
| parent | 8be3a53e18e0e1a98f288f6c7f5e9da3adbe9c49 (diff) | |
Merge branch 'linus' into x86/entry, to resolve conflicts
Conflicts:
arch/x86/kernel/traps.c
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/riscv/kernel/sys_riscv.c')
| -rw-r--r-- | arch/riscv/kernel/sys_riscv.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/riscv/kernel/sys_riscv.c b/arch/riscv/kernel/sys_riscv.c index f3619f59d85c..12f8a7fce78b 100644 --- a/arch/riscv/kernel/sys_riscv.c +++ b/arch/riscv/kernel/sys_riscv.c @@ -8,6 +8,7 @@ #include <linux/syscalls.h> #include <asm/unistd.h> #include <asm/cacheflush.h> +#include <asm-generic/mman-common.h> static long riscv_sys_mmap(unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags, @@ -16,6 +17,11 @@ static long riscv_sys_mmap(unsigned long addr, unsigned long len, { if (unlikely(offset & (~PAGE_MASK >> page_shift_offset))) return -EINVAL; + + if ((prot & PROT_WRITE) && (prot & PROT_EXEC)) + if (unlikely(!(prot & PROT_READ))) + return -EINVAL; + return ksys_mmap_pgoff(addr, len, prot, flags, fd, offset >> (PAGE_SHIFT - page_shift_offset)); } |