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Message-ID: <e70e3c60-4a5e-4635-a21e-c2438abf2a5c@gmail.com>
Date: Thu, 29 May 2025 23:43:55 -0700
From: Rudraksha Gupta <guptarud@...il.com>
To: linux-kernel@...r.kernel.org,
Linux regressions mailing list <regressions@...ts.linux.dev>,
rust-for-linux@...r.kernel.org, Miguel Ojeda <ojeda@...nel.org>
Subject: Re: REGRESSION: armv7 build mismatched types
Unsure why the formatting got messed up. Retrying a second time (if this
doesn't work, please look at the logs and excuse me).
RUSTC L rust/ffi.o
RUSTC L rust/build_error.o
RUSTC L rust/pin_init.o
RUSTC L rust/bindings.o
RUSTC L rust/uapi.o
EXPORTS rust/exports_bindings_generated.h
RUSTC L rust/kernel.o
error[E0308]: mismatched types
--> rust/kernel/lib.rs:234:45
|
234 | $crate::assert_same_type(field_ptr, (&raw const
(*container_ptr).$($fields)*).cast_mut());
| ------------------------ ---------
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `*const
drm_device`, found `*mut Opaque<drm_device>`
| | |
| | expected all arguments to be
this `*const drm_device` type because they need to match the type of
this parameter
| arguments to this function are incorrect
|
::: rust/kernel/drm/device.rs:140:18
|
140 | unsafe { crate::container_of!(ptr, Self, dev) }.cast_mut()
| ------------------------------------ in this
macro invocation
|
= note: expected raw pointer `*const drm_device`
found raw pointer `*mut Opaque<drm_device>`
note: function defined here
--> rust/kernel/lib.rs:241:8
|
241 | pub fn assert_same_type<T>(_: T, _: T) {}
| ^^^^^^^^^^^^^^^^ - ---- ---- this parameter needs to
match the `*const drm_device` type of parameter #1
| | |
| | parameter #2 needs to match the
`*const drm_device` type of this parameter
| parameter #1 and parameter #2 both
reference this parameter `T`
= note: this error originates in the macro `crate::container_of`
(in Nightly builds, run with -Z macro-backtrace for more info)
error[E0308]: mismatched types
--> rust/kernel/lib.rs:234:45
|
234 | $crate::assert_same_type(field_ptr, (&raw const
(*container_ptr).$($fields)*).cast_mut());
| ------------------------ ---------
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `*mut
drm_gem_object`, found `*mut Opaque<drm_gem_object>`
| | |
| | expected all arguments to be
this `*mut drm_gem_object` type because they need to match the type of
this parameter
| arguments to this function are incorrect
|
::: rust/kernel/drm/gem/mod.rs:130:20
|
130 | unsafe { &*crate::container_of!(self_ptr, Object<T>, obj) }
| ---------------------------------------------- in this macro
invocation
|
= note: expected raw pointer `*mut drm_gem_object`
found raw pointer `*mut Opaque<drm_gem_object>`
note: function defined here
--> rust/kernel/lib.rs:241:8
|
241 | pub fn assert_same_type<T>(_: T, _: T) {}
| ^^^^^^^^^^^^^^^^ - ---- ---- this parameter needs to
match the `*mut drm_gem_object` type of parameter #1
| | |
| | parameter #2 needs to match the `*mut
drm_gem_object` type of this parameter
| parameter #1 and parameter #2 both
reference this parameter `T`
= note: this error originates in the macro `crate::container_of`
(in Nightly builds, run with -Z macro-backtrace for more info)
error[E0308]: mismatched types
--> rust/kernel/lib.rs:234:45
|
234 | $crate::assert_same_type(field_ptr, (&raw const
(*container_ptr).$($fields)*).cast_mut());
| ------------------------ ---------
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `*mut
drm_gem_object`, found `*mut Opaque<drm_gem_object>`
| | |
| | expected all arguments to be
this `*mut drm_gem_object` type because they need to match the type of
this parameter
| arguments to this function are incorrect
|
::: rust/kernel/drm/gem/mod.rs:273:29
|
273 | let this = unsafe { crate::container_of!(obj, Self, obj) };
| ------------------------------------ in this macro invocation
|
= note: expected raw pointer `*mut drm_gem_object`
found raw pointer `*mut Opaque<drm_gem_object>`
note: function defined here
--> rust/kernel/lib.rs:241:8
|
241 | pub fn assert_same_type<T>(_: T, _: T) {}
| ^^^^^^^^^^^^^^^^ - ---- ---- this parameter needs to
match the `*mut drm_gem_object` type of parameter #1
| | |
| | parameter #2 needs to match the `*mut
drm_gem_object` type of this parameter
| parameter #1 and parameter #2 both
reference this parameter `T`
= note: this error originates in the macro `crate::container_of`
(in Nightly builds, run with -Z macro-backtrace for more info)
error: aborting due to 3 previous errors
For more information about this error, try `rustc --explain E0308`.
make[2]: *** [rust/Makefile:538: rust/kernel.o] Error 1
make[1]: ***
[/home/pmos/build/src/linux-next-next-20250530/Makefile:1285: prepare]
Error 2
make: *** [Makefile:248: __sub-make] Error 2
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