diff options
| author | Thomas Weißschuh <thomas.weissschuh@linutronix.de> | 2025-03-06 15:07:20 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2025-03-11 09:49:15 +0100 |
| commit | c080f2b8a2e44077aed15f1b4f0fbc0f4a912a66 (patch) | |
| tree | 27220717b9e92f7a78b3cd31c9fb5f709a63312f | |
| parent | 886653e36639177dd3ec2e7a4f0dc843d7def3f4 (diff) | |
x86/vdso: Always reject undefined references during linking
Instead of using a custom script to detect and fail on undefined
references, use --no-undefined for all VDSO linker invocations.
Drop the now unused checkundef.sh script.
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20250306-vdso-checkundef-v2-1-a26cc315fd73@linutronix.de
| -rw-r--r-- | arch/x86/entry/vdso/Makefile | 7 | ||||
| -rwxr-xr-x | arch/x86/entry/vdso/checkundef.sh | 10 |
2 files changed, 3 insertions, 14 deletions
diff --git a/arch/x86/entry/vdso/Makefile b/arch/x86/entry/vdso/Makefile index 1c0072336e66..a6430c5636b8 100644 --- a/arch/x86/entry/vdso/Makefile +++ b/arch/x86/entry/vdso/Makefile @@ -32,7 +32,7 @@ targets += $(foreach x, 64 x32 32, vdso-image-$(x).c vdso$(x).so vdso$(x).so.dbg CPPFLAGS_vdso.lds += -P -C -VDSO_LDFLAGS_vdso.lds = -m elf_x86_64 -soname linux-vdso.so.1 --no-undefined \ +VDSO_LDFLAGS_vdso.lds = -m elf_x86_64 -soname linux-vdso.so.1 \ -z max-page-size=4096 $(obj)/vdso64.so.dbg: $(obj)/vdso.lds $(vobjs) FORCE @@ -151,10 +151,9 @@ $(obj)/vdso32.so.dbg: $(obj)/vdso32/vdso32.lds $(vobjs32) FORCE quiet_cmd_vdso = VDSO $@ cmd_vdso = $(LD) -o $@ \ $(VDSO_LDFLAGS) $(VDSO_LDFLAGS_$(filter %.lds,$(^F))) \ - -T $(filter %.lds,$^) $(filter %.o,$^) && \ - sh $(src)/checkundef.sh '$(NM)' '$@' + -T $(filter %.lds,$^) $(filter %.o,$^) -VDSO_LDFLAGS = -shared --hash-style=both --build-id=sha1 \ +VDSO_LDFLAGS = -shared --hash-style=both --build-id=sha1 --no-undefined \ $(call ld-option, --eh-frame-hdr) -Bsymbolic -z noexecstack quiet_cmd_vdso_and_check = VDSO $@ diff --git a/arch/x86/entry/vdso/checkundef.sh b/arch/x86/entry/vdso/checkundef.sh deleted file mode 100755 index 7ee90a9b549d..000000000000 --- a/arch/x86/entry/vdso/checkundef.sh +++ /dev/null @@ -1,10 +0,0 @@ -#!/bin/sh -nm="$1" -file="$2" -$nm "$file" | grep '^ *U' > /dev/null 2>&1 -if [ $? -eq 1 ]; then - exit 0 -else - echo "$file: undefined symbols found" >&2 - exit 1 -fi |