Date: Fri, 09 Feb 2018 00:05:51 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 225775] btxld does not handle input with other than 2 PT_LOAD segments Message-ID: <bug-225775-8-ZYNTlRgfgy@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-225775-8@https.bugs.freebsd.org/bugzilla/> References: <bug-225775-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D225775 --- Comment #2 from Ed Maste <emaste@freebsd.org> --- It is because lld collects read-only contents into a separate segment, for example: % readelf -l zfsloader.sym Elf file type is EXEC (Executable file) Entry point 0x0 There are 5 program headers, starting at offset 52 Program Headers: Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align LOAD 0x001000 0x00000000 0x00000000 0x58694 0x58694 R E 0x1000 LOAD 0x05a000 0x00059000 0x00059000 0x0afcc 0x0afcc R 0x1000 LOAD 0x065000 0x00064000 0x00064000 0x07854 0x14c9c RW 0x1000 GNU_RELRO 0x06c000 0x0006b000 0x0006b000 0x00854 0x01000 R 0x1 GNU_STACK 0x000000 0x00000000 0x00000000 0x00000 0x00000 RW 0 Section to Segment mapping: Segment Sections... 00 .text .gnu_debuglink .comment .debug_str .debug_loc .debug_abbrev .debug_info .debug_ranges .debug_macinfo .debug_pubnames .debug_pubtypes .debug_frame .debug_line .debug_aranges .symtab .shstrtab .strtab=20 01 .rodata set_Xcommand_set=20 02 .data set_Xficl_compile_set .data.rel.ro .got .bss=20 03 .data.rel.ro .got=20 04=20=20=20=20=20 Linking with -z norelro leaves the three PT_LOADs, just the PT_GNU_RELRO is= not emitted. From the output above btxld should coalesce two PT_LOADs, and discarding a PT_LOAD should be an error not a warning. --=20 You are receiving this mail because: You are the assignee for the bug.=
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