diff options
author | Miguel Ojeda <ojeda@kernel.org> | 2021-04-05 06:03:50 +0300 |
---|---|---|
committer | Miguel Ojeda <ojeda@kernel.org> | 2022-09-28 09:56:25 +0300 |
commit | b8a94bfb33952bb17fbc65f8903d242a721c533d (patch) | |
tree | 711d8fb9e4ac096d9a07fe046f77d0b7726bcdff /fs/filesystems.c | |
parent | 73bbb94466fd3f8b313eeb0b0467314a262dddb3 (diff) | |
download | linux-b8a94bfb33952bb17fbc65f8903d242a721c533d.tar.xz |
kallsyms: increase maximum kernel symbol length to 512
Rust symbols can become quite long due to namespacing introduced
by modules, types, traits, generics, etc. For instance,
the following code:
pub mod my_module {
pub struct MyType;
pub struct MyGenericType<T>(T);
pub trait MyTrait {
fn my_method() -> u32;
}
impl MyTrait for MyGenericType<MyType> {
fn my_method() -> u32 {
42
}
}
}
generates a symbol of length 96 when using the upcoming v0 mangling scheme:
_RNvXNtCshGpAVYOtgW1_7example9my_moduleINtB2_13MyGenericTypeNtB2_6MyTypeENtB2_7MyTrait9my_method
At the moment, Rust symbols may reach up to 300 in length.
Setting 512 as the maximum seems like a reasonable choice to
keep some headroom.
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Co-developed-by: Alex Gaynor <alex.gaynor@gmail.com>
Signed-off-by: Alex Gaynor <alex.gaynor@gmail.com>
Co-developed-by: Wedson Almeida Filho <wedsonaf@google.com>
Signed-off-by: Wedson Almeida Filho <wedsonaf@google.com>
Co-developed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Gary Guo <gary@garyguo.net>
Co-developed-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Diffstat (limited to 'fs/filesystems.c')
0 files changed, 0 insertions, 0 deletions