A quick check shows this test was introduced in 544029862c selftests/memfd: add tests for F_SEAL_FUTURE_WRITE seal [1]
As this issue does not exist in F-5.4, I think it might have something to do with B-hwe-5.4. Run `git grep F_SEAL_FUTURE_WRITE` in B-hwe-5.4 and Focal tree shows the following is missing on the former: include/linux/mm.h: * seal_check_future_write - Check for F_SEAL_FUTURE_WRITE flag and handle it include/linux/mm.h: * Check whether F_SEAL_FUTURE_WRITE is set; if so, do proper check/handling on include/linux/mm.h: if (seals & F_SEAL_FUTURE_WRITE) { include/linux/mm.h: * Since an F_SEAL_FUTURE_WRITE sealed memfd can be mapped as Diff: https://pastebin.ubuntu.com/p/8k5djst6C3/ [1] https://github.com/torvalds/linux/commit/544029862cbb1d7903e19f2e58f48d4884e1201b -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-hwe in Ubuntu. https://bugs.launchpad.net/bugs/1926142 Title: memfd from ubuntu_kernel_selftests failed to build on B-5.4 Status in ubuntu-kernel-tests: New Status in linux-hwe package in Ubuntu: New Status in linux-hwe-5.4 package in Ubuntu: New Status in linux-hwe source package in Bionic: New Status in linux-hwe-5.4 source package in Bionic: New Bug description: Test build on B-5.4 (5.4.0-73.82~18.04.1) failed with: error: ‘F_SEAL_FUTURE_WRITE’ undeclared Build log: $ sudo make TARGETS=memfd make --no-builtin-rules ARCH=x86 -C ../../.. headers_install make[1]: Entering directory '/home/ubuntu/autotest/client/tmp/ubuntu_kernel_selftests/src/linux' INSTALL ./usr/include make[1]: Leaving directory '/home/ubuntu/autotest/client/tmp/ubuntu_kernel_selftests/src/linux' make[1]: Entering directory '/home/ubuntu/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests/memfd' gcc -D_FILE_OFFSET_BITS=64 -I../../../../include/uapi/ -I../../../../include/ -I../../../../usr/include/ memfd_test.c common.o -o /home/ubuntu/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests/memfd/memfd_test memfd_test.c: In function ‘test_seal_future_write’: memfd_test.c:749:27: error: ‘F_SEAL_FUTURE_WRITE’ undeclared (first use in this function); did you mean ‘F_SEAL_WRITE’? mfd_assert_add_seals(fd, F_SEAL_FUTURE_WRITE); ^~~~~~~~~~~~~~~~~~~ F_SEAL_WRITE memfd_test.c:749:27: note: each undeclared identifier is reported only once for each function it appears in ../lib.mk:141: recipe for target '/home/ubuntu/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests/memfd/memfd_test' failed make[1]: *** [/home/ubuntu/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests/memfd/memfd_test] Error 1 make[1]: Leaving directory '/home/ubuntu/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests/memfd' Makefile:143: recipe for target 'all' failed make: *** [all] Error 2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1926142/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp