On 7/1/06, Arjan van de Ven <[email protected]> wrote:
On Sat, 2006-07-01 at 14:09 -0700, Miles Lane wrote:
> I am getting this:
>
> KLIBCLD usr/klibc/libc.so
> usr/klibc/execl.o: In function `execl':
> usr/klibc/exec_l.c:59: undefined reference to `__stack_chk_fail'
> usr/klibc/execle.o: In function `execle':
> usr/klibc/exec_l.c:59: undefined reference to `__stack_chk_fail'
> usr/klibc/execvpe.o: In function `execvpe':
> usr/klibc/execvpe.c:75: undefined reference to `__stack_chk_fail'
> usr/klibc/execlp.o: In function `execlp':
> usr/klibc/exec_l.c:59: undefined reference to `__stack_chk_fail'
> usr/klibc/execlpe.o: In function `execlpe':
> usr/klibc/exec_l.c:59: undefined reference to `__stack_chk_fail'
> usr/klibc/vfprintf.o:usr/klibc/vfprintf.c:26: more undefined
> references to `__stack_chk_fail' follow
> make[2]: *** [usr/klibc/libc.so] Error 1
>
> But I've searched all the .h and .c files in the tree and found no
> reference to __stack_chk_fail. I am running Ubuntu's Edgy Eft (the
> latest development tree).
somehow you're getting -fstack-protector added to your CFLAGs.. which
won't do you any good unless you link to glibc or another library that
implements the user side of the feature...
The only reference to -fstack-protector in my linux kernel tree is here:
arch/i386/kernel/asm-offsets.s
.file "asm-offsets.c"
# GNU C version 4.1.2 20060613 (prerelease) (Ubuntu 4.1.1-2ubuntu5)
(i486-linux-gnu)
# compiled by GNU C version 4.1.2 20060613 (prerelease) (Ubuntu
4.1.1-2ubuntu5).
# GGC heuristics: --param ggc-min-expand=96 --param ggc-min-heapsize=125021
# options passed: -nostdinc -Iinclude -Iinclude/asm-i386/mach-default
# -D__KERNEL__ -DKBUILD_STR(s)=#s -DKBUILD_BASENAME=KBUILD_STR(asm_offsets)
# -DKBUILD_MODNAME=KBUILD_STR(asm_offsets) -isystem -include -MD -m32
# -msoft-float -mpreferred-stack-boundary=2 -march=i686 -mtune=pentium4
# -mregparm=3 -auxbase-strip -Os -Wall -Wundef -Wstrict-prototypes
# -Wno-trigraphs -Wdeclaration-after-statement -Wno-pointer-sign
# -fno-strict-aliasing -fno-common -fno-omit-frame-pointer
# -fno-optimize-sibling-calls -fasynchronous-unwind-tables -ffreestanding
# -fverbose-asm
# options enabled: -falign-loops -fargument-alias
# -fasynchronous-unwind-tables -fbranch-count-reg -fcaller-saves
# -fcprop-registers -fcrossjumping -fcse-follow-jumps -fcse-skip-blocks
# -fdefer-pop -fdelete-null-pointer-checks -fearly-inlining
# -feliminate-unused-debug-types -fexpensive-optimizations -ffunction-cse
# -fgcse -fgcse-lm -fguess-branch-probability -fident -fif-conversion
# -fif-conversion2 -finline-functions -finline-functions-called-once
# -fipa-pure-const -fipa-reference -fipa-type-escape -fivopts
# -fkeep-static-consts -fleading-underscore -floop-optimize
# -floop-optimize2 -fmath-errno -fmerge-constants -foptimize-register-move
# -fpcc-struct-return -fpeephole -fpeephole2 -fregmove -freorder-functions
# -frerun-cse-after-loop -frerun-loop-opt -fsched-interblock -fsched-spec
# -fsched-stalled-insns-dep -fshow-column -fsplit-ivs-in-unroller
# -fstack-protector -fstrength-reduce -fthread-jumps -ftrapping-math
# -ftree-ccp -ftree-copy-prop -ftree-copyrename -ftree-dce
# -ftree-dominator-opts -ftree-dse -ftree-fre -ftree-loop-im
# -ftree-loop-ivcanon -ftree-loop-optimize -ftree-lrs -ftree-salias
# -ftree-sink -ftree-sra -ftree-store-ccp -ftree-store-copy-prop -ftree-ter
# -ftree-vect-loop-version -ftree-vrp -funit-at-a-time -funwind-tables
# -fverbose-asm -fzero-initialized-in-bss -m32 -m96bit-long-double
# -malign-stringops -mieee-fp -mno-fancy-math-387 -mno-red-zone -mpush-args
# -mtls-direct-seg-refs
# Compiler executable checksum: 08eb10034110f95d4c3c06297525c871
.text
.globl foo
.type foo, @function
foo:
.LFB517:
pushl %ebp #
.LCFI0:
movl %esp, %ebp #,
.LCFI1:
#APP
->SIGCONTEXT_eax $44 offsetof(struct sigcontext, eax) #
->SIGCONTEXT_ebx $32 offsetof(struct sigcontext, ebx) #
->SIGCONTEXT_ecx $40 offsetof(struct sigcontext, ecx) #
->SIGCONTEXT_edx $36 offsetof(struct sigcontext, edx) #
->SIGCONTEXT_esi $20 offsetof(struct sigcontext, esi) #
->SIGCONTEXT_edi $16 offsetof(struct sigcontext, edi) #
->SIGCONTEXT_ebp $24 offsetof(struct sigcontext, ebp) #
->SIGCONTEXT_esp $28 offsetof(struct sigcontext, esp) #
->SIGCONTEXT_eip $56 offsetof(struct sigcontext, eip) #
->
->CPUINFO_x86 $0 offsetof(struct cpuinfo_x86, x86) #
->CPUINFO_x86_vendor $1 offsetof(struct cpuinfo_x86, x86_vendor) #
->CPUINFO_x86_model $2 offsetof(struct cpuinfo_x86, x86_model) #
->CPUINFO_x86_mask $3 offsetof(struct cpuinfo_x86, x86_mask) #
->CPUINFO_hard_math $6 offsetof(struct cpuinfo_x86, hard_math) #
->CPUINFO_cpuid_level $8 offsetof(struct cpuinfo_x86, cpuid_level) #
->CPUINFO_x86_capability $12 offsetof(struct cpuinfo_x86,
x86_capability) #
->CPUINFO_x86_vendor_id $40 offsetof(struct cpuinfo_x86, x86_vendor_id) #
->
->TI_task $0 offsetof(struct thread_info, task) #
->TI_exec_domain $4 offsetof(struct thread_info, exec_domain) #
->TI_flags $8 offsetof(struct thread_info, flags) #
->TI_status $12 offsetof(struct thread_info, status) #
->TI_cpu $16 offsetof(struct thread_info, cpu) #
->TI_preempt_count $20 offsetof(struct thread_info, preempt_count) #
->TI_addr_limit $24 offsetof(struct thread_info, addr_limit) #
->TI_restart_block $32 offsetof(struct thread_info, restart_block) #
->TI_sysenter_return $28 offsetof(struct thread_info, sysenter_return) #
->
->EXEC_DOMAIN_handler $4 offsetof(struct exec_domain, handler) #
->RT_SIGFRAME_sigcontext $164 offsetof(struct rt_sigframe,
uc.uc_mcontext) #
->
->pbe_address $0 offsetof(struct pbe, address) #
->pbe_orig_address $4 offsetof(struct pbe, orig_address) #
->pbe_next $8 offsetof(struct pbe, next) #
->TSS_sysenter_esp0 $-8700 offsetof(struct tss_struct, esp0) -
sizeof(struct tss_struct) #
->PAGE_SIZE_asm $4096 PAGE_SIZE #
->VDSO_PRELINK $-8192 VDSO_PRELINK #
->crypto_tfm_ctx_offset $48 offsetof(struct crypto_tfm, __crt_ctx) #
#NO_APP
popl %ebp #
ret
.LFE517:
.size foo, .-foo
.section .eh_frame,"a",@progbits
.Lframe1:
.long .LECIE1-.LSCIE1
.LSCIE1:
.long 0x0
.byte 0x1
.string ""
.uleb128 0x1
.sleb128 -4
.byte 0x8
.byte 0xc
.uleb128 0x4
.uleb128 0x4
.byte 0x88
.uleb128 0x1
.align 4
.LECIE1:
.LSFDE1:
.long .LEFDE1-.LASFDE1
.LASFDE1:
.long .LASFDE1-.Lframe1
.long .LFB517
.long .LFE517-.LFB517
.byte 0x4
.long .LCFI0-.LFB517
.byte 0xe
.uleb128 0x8
.byte 0x85
.uleb128 0x2
.byte 0x4
.long .LCFI1-.LCFI0
.byte 0xd
.uleb128 0x5
.align 4
.LEFDE1:
.ident "GCC: (GNU) 4.1.2 20060613 (prerelease) (Ubuntu 4.1.1-2ubuntu5)"
.section .note.GNU-stack,"",@progbits
-
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