rust: security: use `pin_init::zeroed()` for LSM context initialization

[PATCH] rust: security: use `pin_init::zeroed()` for LSM context initialization

Posted by Atharv Dubey 2 days, 8 hours ago

Replace the previous `unsafe { core::mem::zeroed() }` initialization of
`bindings::lsm_context` with `pin_init::zeroed()`.

Link: https://github.com/Rust-for-Linux/linux/issues/1189
Signed-off-by: Atharv Dubey <atharvd440@gmail.com>
---
 rust/kernel/security.rs | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/rust/kernel/security.rs b/rust/kernel/security.rs
index 9d271695265f..4dc3eba6ce84 100644
--- a/rust/kernel/security.rs
+++ b/rust/kernel/security.rs
@@ -62,8 +62,7 @@ impl SecurityCtx {
     /// Get the security context given its id.
     #[inline]
     pub fn from_secid(secid: u32) -> Result<Self> {
-        // SAFETY: `struct lsm_context` can be initialized to all zeros.
-        let mut ctx: bindings::lsm_context = unsafe { core::mem::zeroed() };
+        let mut ctx: bindings::lsm_context = pin_init::zeroed();
 
         // SAFETY: Just a C FFI call. The pointer is valid for writes.
         to_result(unsafe { bindings::security_secid_to_secctx(secid, &mut ctx) })?;
-- 
2.43.0

Re: [PATCH] rust: security: use `pin_init::zeroed()` for LSM context initialization

Posted by Alexandre Courbot 18 hours ago

On Sat Nov 29, 2025 at 10:56 PM JST, Atharv Dubey wrote:
> Replace the previous `unsafe { core::mem::zeroed() }` initialization of
> `bindings::lsm_context` with `pin_init::zeroed()`.
>
> Link: https://github.com/Rust-for-Linux/linux/issues/1189
> Signed-off-by: Atharv Dubey <atharvd440@gmail.com>
> ---
>  rust/kernel/security.rs | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/rust/kernel/security.rs b/rust/kernel/security.rs
> index 9d271695265f..4dc3eba6ce84 100644
> --- a/rust/kernel/security.rs
> +++ b/rust/kernel/security.rs
> @@ -62,8 +62,7 @@ impl SecurityCtx {
>      /// Get the security context given its id.
>      #[inline]
>      pub fn from_secid(secid: u32) -> Result<Self> {
> -        // SAFETY: `struct lsm_context` can be initialized to all zeros.
> -        let mut ctx: bindings::lsm_context = unsafe { core::mem::zeroed() };
> +        let mut ctx: bindings::lsm_context = pin_init::zeroed();

Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>