On Mon, Mar 9, 2026 at 1:42 AM kernel test robot <[email protected]> wrote: > > Hi Sungwoo, > > kernel test robot noticed the following build errors: > > [auto build test ERROR on axboe/for-next] > [also build test ERROR on device-mapper-dm/for-next linus/master v6.16-rc1 > next-20260306] > [cannot apply to linux-nvme/for-next] > [If your patch is applied to the wrong git tree, kindly drop us a note. > And when submitting patch, we suggest to use '--base' as documented in > https://git-scm.com/docs/git-format-patch#_base_tree_information] > > url: > https://github.com/intel-lab-lkp/linux/commits/Sungwoo-Kim/blk-mq-nvme-Fix-general-protection-fault-in-nvme_setup_descriptor_pools/20260309-143107 > base: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux.git > for-next > patch link: > https://lore.kernel.org/r/20260309062840.2937858-2-iam%40sung-woo.kim > patch subject: [PATCH] blk-mq: nvme: Fix general protection fault in > nvme_setup_descriptor_pools() > config: x86_64-rhel-9.4-rust > (https://download.01.org/0day-ci/archive/20260309/[email protected]/config) > compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project > 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) > rustc: rustc 1.88.0 (6b00bc388 2025-06-23) > reproduce (this is a W=1 build): > (https://download.01.org/0day-ci/archive/20260309/[email protected]/reproduce) > > If you fix the issue in a separate patch/commit (i.e. not just a new version > of > the same patch/commit), kindly add following tags > | Reported-by: kernel test robot <[email protected]> > | Closes: > https://lore.kernel.org/oe-kbuild-all/[email protected]/ > > All errors (new ones prefixed by >>): > > >> error[E0308]: mismatched types > --> rust/kernel/block/mq/operations.rs:274:28 > | > 274 | init_request: Some(Self::init_request_callback), > | ---- ^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected fn > pointer, found fn item > | | > | arguments to this enum variant are incorrect > | > = note: expected fn pointer `unsafe extern "C" fn(_, _, _, i32) -> _` > found fn item `unsafe extern "C" fn(_, _, _, u32) -> _ > {block::mq::operations::OperationsVTable::<T>::init_request_callback}` > help: the type constructed contains `unsafe extern "C" fn(*mut > bindings::blk_mq_tag_set, *mut bindings::request, u32, u32) -> i32 > {block::mq::operations::OperationsVTable::<T>::init_request_callback}` due to > the type of the argument passed
Looks like the type of _numa_node in the signature of init_request_callback() needs to be updated accordingly from c_uint to c_int. Best, Caleb > --> rust/kernel/block/mq/operations.rs:274:23 > | > 274 | init_request: Some(Self::init_request_callback), > | ^^^^^---------------------------^ > | | > | this argument influences the type of `Some` > note: tuple variant defined here > --> > /opt/cross/rustc-1.88.0-bindgen-0.72.1/rustup/toolchains/1.88.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/option.rs:597:5 > | > 597 | Some(#[stable(feature = "rust1", since = "1.0.0")] T), > | ^^^^ > > -- > 0-DAY CI Kernel Test Service > https://github.com/intel/lkp-tests/wiki >
