thebunker linux # make CHK include/linux/version.h make[1]: `arch/i386/kernel/asm-offsets.s' is up to date. CHK include/linux/compile.h CHK usr/initramfs_list CC fs/binfmt_elf.o fs/binfmt_elf.c: In function `pax_parse_elf_flags': fs/binfmt_elf.c:736: error: structure has no member named `flags' make[1]: *** [fs/binfmt_elf.o] Error 1 make: *** [fs] Error 2 Appears to be PaX related due to the codeblock its in.
*** Bug 87272 has been marked as a duplicate of this bug. ***
I _think_ this is because the flags element of struct mm_struct is conditional on: #if defined(CONFIG_PAX_NOEXEC) || defined(CONFIG_PAX_ASLR) in include/linux/sched.h, but the usage is dependent on: #if defined(CONFIG_PAX_EI_PAX) || defined(CONFIG_PAX_PT_PAX_FLAGS) in fs/binfmt_elf.c What PaX flags have you chosen (attach your kernel config file)? If I'm right, you have the PaX EI and/or PT flags enabled but not the things that use them. Try switching on "Enforce non-executable pages" or "Address Layout Randomization" in your kernel config. Either way, let us know how you get on.
Created attachment 57879 [details] .config Here's the .config, relevant parts as comment: CONFIG_PAX=y CONFIG_PAX_SOFTMODE=y # CONFIG_PAX_EI_PAX is not set CONFIG_PAX_PT_PAX_FLAGS=y CONFIG_PAX_NO_ACL_FLAGS=y # CONFIG_PAX_HAVE_ACL_FLAGS is not set # CONFIG_PAX_HOOK_ACL_FLAGS is not set # CONFIG_PAX_NOEXEC is not set # CONFIG_PAX_ASLR is not set
Spider just snag the .config from toucan ;)
Hah! I was right :) Happens occasionally... There's little point having CONFIG_PAX_PT_PAX_FLAGS set if you don't have CONFIG_PAX_NOEXEC or CONFIG_PAX_ASLR - the flags enabled by PT_PAX_FLAGS control how the NOEXEC and ASLR protections are applied. Either switch off PT_PAX_FLAGS (or all of PaX!), or switch on NOEXEC and/or ASLR.
Possible fixes include: 1) Rework PAX patch to include the relevant declarations when CONFIG_NOEXEC | CONFIG_ASLR instead of CONFIG_PAX 2) Warn user that one of NOEXEC/ASLR must be set, in CONFIG_PAX help Given that the failing configuration is not a useful configuration anyway, I propose we do nothing.
