[RFC PATCH V3 25/43] rv64ilp32_abi: exec: Adapt 64lp64 env and argv
From: guoren@kernel.org
Date: 2025-03-25 12:22:43
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exec & binfmt api, elf, filesystems (vfs and infrastructure), the rest · Maintainers:
Kees Cook, Alexander Viro, Christian Brauner, Linus Torvalds
From: "Guo Ren (Alibaba DAMO Academy)" <guoren@kernel.org> The rv64ilp32 abi reuses the env and argv memory layout of the lp64 abi, so leave the space to fit the lp64 struct layout. Signed-off-by: Guo Ren (Alibaba DAMO Academy) <guoren@kernel.org> --- fs/exec.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/fs/exec.c b/fs/exec.c
index 506cd411f4ac..548d18b7ae92 100644
--- a/fs/exec.c
+++ b/fs/exec.c@@ -424,6 +424,10 @@ static const char __user *get_user_arg_ptr(struct user_arg_ptr argv, int nr) } #endif +#if defined(CONFIG_64BIT) && (BITS_PER_LONG == 32) + nr = nr * 2; +#endif + if (get_user(native, argv.ptr.native + nr)) return ERR_PTR(-EFAULT);
--
2.40.1