https://bugzilla.kernel.org/show_bug.cgi?id=210021 Bug ID: 210021 Summary: IB/rxe: build error due to unmet dependency for CRYPTO_CRC32 by RDMA_RXE Product: Drivers Version: 2.5 Kernel Version: 5.4.4 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Infiniband/RDMA Assignee: drivers_infiniband-rdma@xxxxxxxxxxxxxxxxxxxx Reporter: fazilyildiran@xxxxxxxxx CC: dledford@xxxxxxxxxx, fazilyildiran@xxxxxxxxx, leon@xxxxxxx, paul@xxxxxxxxx Regression: No Created attachment 293417 --> https://bugzilla.kernel.org/attachment.cgi?id=293417&action=edit reproduce.tar.gz Attachment (reproduce.tar.gz) content: - sample.config: Config file to reproduce the bug. - build_out.txt: Output of Kbuild including the error messages. When RDMA_RXE is enabled and CRYPTO is disabled, it results in the following Kbuild warning: WARNING: unmet direct dependencies detected for CRYPTO_CRC32 Depends on [n]: CRYPTO [=n] Selected by [y]: - RDMA_RXE [=y] && (INFINIBAND_USER_ACCESS [=y] || !INFINIBAND_USER_ACCESS [=y]) && INET [=y] && PCI [=y] && INFINIBAND [=y] && (!64BIT [=y] || ARCH_DMA_ADDR_T_64BIT [=y]) Building the kernel fails due to this unmet direct dependency issue as follows: [...] LD .tmp_vmlinux1 crypto/crc32_generic.o: In function `crc32_mod_fini': crc32_generic.c:(.exit.text+0x8): undefined reference to `crypto_unregister_shash' crypto/crc32_generic.o: In function `crc32_mod_init': crc32_generic.c:(.init.text+0x8): undefined reference to `crypto_register_shash' drivers/infiniband/sw/rxe/rxe.o: In function `rxe_dealloc': rxe.c:(.text+0x102): undefined reference to `crypto_destroy_tfm' drivers/infiniband/sw/rxe/rxe_req.o: In function `rxe_crc32.isra.17': rxe_req.c:(.text+0x219): undefined reference to `crypto_shash_update' drivers/infiniband/sw/rxe/rxe_recv.o: In function `rxe_crc32.isra.7': rxe_recv.c:(.text+0xeb): undefined reference to `crypto_shash_update' drivers/infiniband/sw/rxe/rxe_verbs.o: In function `rxe_register_device': rxe_verbs.c:(.text+0x117d): undefined reference to `crypto_alloc_shash' drivers/infiniband/sw/rxe/rxe_mr.o: In function `rxe_crc32.isra.3': rxe_mr.c:(.text+0x13b): undefined reference to `crypto_shash_update' drivers/infiniband/sw/rxe/rxe_icrc.o: In function `rxe_crc32.isra.0': rxe_icrc.c:(.text+0x26): undefined reference to `crypto_shash_update' Makefile:1077: recipe for target 'vmlinux' failed make: *** [vmlinux] Error 1 Steps to reproduce the bug for v5.4.4: 1. wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross 2. chmod +x ~/bin/make.cross 3. tar -xvf reproduce.tar.gz # sample.config and build_out.txt 4. cp sample.config path/to/linux-source-v5.4.4/.config 5. cd path/to/linux-source-v5.4.4/ 6. ~/bin/make.cross ARCH=x86_64 clean 7. ~/bin/make.cross ARCH=x86_64 olddefconfig # unmet direct dependency warning 8. ~/bin/make.cross ARCH=x86_64 # should have a build error The output for the steps [6-8] can be found in build_out.txt. The build error happens as follows: RDMA_RXE selects CRYPTO_CRC32. CRYPTO_CRC32 selects CRYPTO_HASH, and CRYPTO_HASH selects CRYPTO_HASH2. When RDMA_RXE selects CRYPTO_CRC32 without accounting for its direct dependency (CRYPTO), CRYPTO_CRC32 gets enabled but it does not select CRYPTO_HASH thus CRYPTO_HASH2. Consequently, the required functions such crypto_unregister_shash are left undefined, causing the build error. Thanks, Necip -- You are receiving this mail because: You are watching the assignee of the bug.
