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Fangrui Song aff69273af vdso: Improve cmd_vdso_check to check all dynamic relocations 
The actual intention is that no dynamic relocation exists in the VDSO. For
this the VDSO build validates that the resulting .so file does not have any
relocations which are specified via $(ARCH_REL_TYPE_ABS) per architecture,
which is fragile as e.g. ARM64 lacks an entry for R_AARCH64_RELATIVE. Aside
of that ARCH_REL_TYPE_ABS is a misnomer as it checks for relative
relocations too.

However, some GNU ld ports produce unneeded R_*_NONE relocation entries. If
a port fails to determine the exact .rel[a].dyn size, the trailing zeros
become R_*_NONE relocations. E.g. ld's powerpc port recently fixed
https://sourceware.org/bugzilla/show_bug.cgi?id=29540). R_*_NONE are
generally a no-op in the dynamic loaders. So just ignore them.

Remove the ARCH_REL_TYPE_ABS defines and just validate that the resulting
.so file does not contain any R_* relocation entries except R_*_NONE.

Signed-off-by: Fangrui Song <maskray@google.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Vincenzo Frascino <vincenzo.frascino@arm.com> # for aarch64
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com> # for vDSO, aarch64
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Link: https://lore.kernel.org/r/20230310190750.3323802-1-maskray@google.com
 		2023-03-21 21:15:34 +01:00
..
syscalls arch: syscalls: simplify uapi/kapi directory creation 2022-03-31 12:03:46 +09:00
vdso32 vdso: Improve cmd_vdso_check to check all dynamic relocations 2023-03-21 21:15:34 +01:00
vdso64 vdso: Improve cmd_vdso_check to check all dynamic relocations 2023-03-21 21:15:34 +01:00
.gitignore
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Makefile s390/cpum_cf: merge source files for CPU Measurement counter facility 2023-01-25 20:51:10 +01:00
abs_lowcore.c s390/mm: allocate Absolute Lowcore Area in decompressor 2023-01-13 14:15:06 +01:00
alternative.c s390/alternatives: remove padding generation code 2022-05-17 15:16:28 +02:00
asm-offsets.c s390/entry: sort out physical vs virtual pointers usage in sie64a 2022-10-26 14:27:41 +02:00
audit.c audit: add support for the openat2 syscall 2021-10-01 16:52:48 -04:00
audit.h
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cache.c s390/cache: change type from unsigned long long to unsigned long 2023-01-25 20:51:09 +01:00
compat_audit.c audit: add support for the openat2 syscall 2021-10-01 16:52:48 -04:00
compat_linux.c
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compat_linux.h s390/compat: cleanup compat_linux.h header file 2022-05-06 20:45:16 +02:00
compat_ptrace.h
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compat_signal.c s390/vx: use simple assignments to access __vector128 members 2023-02-09 20:11:23 +01:00
cpcmd.c s390/cpcmd: use physical address for command and response 2021-10-26 15:21:28 +02:00
cpufeature.c s390/uvdevice: autoload module based on CPU facility 2022-07-19 16:18:49 +02:00
crash_dump.c s390/vx: use simple assignments to access __vector128 members 2023-02-09 20:11:23 +01:00
debug.c s390/debug: remove function type cast 2022-11-23 16:24:07 +01:00
diag.c s390/diag: make __diag8c_tmp_amode31 static 2023-02-06 11:13:54 +01:00
dis.c s390/disassembler: update opcode table 2021-12-16 19:58:07 +01:00
dumpstack.c exit: Add and use make_task_dead. 2021-12-13 12:04:45 -06:00
early.c s390/setup: do not complain about parameters handled in decompressor 2023-02-27 15:29:36 +01:00
early_printk.c
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earlypgm.S s390: generate register offsets into pt_regs automatically 2022-05-25 11:46:02 +02:00
ebcdic.c
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entry.S s390/mcck: cleanup user process termination path 2023-02-28 13:19:05 +01:00
entry.h s390: move __amode31_base declaration to proper header file 2023-01-13 14:15:07 +01:00
fpu.c s390/vx: add vx-insn.h wrapper include file 2022-12-06 16:18:23 +01:00
ftrace.c ftrace: Remove return value of ftrace_arch_modify_*() 2022-05-26 21:13:00 -04:00
ftrace.h s390: raise minimum supported machine generation to z10 2022-03-10 15:58:17 +01:00
guarded_storage.c
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head64.S s390/early: fix sclp_early_sccb variable lifetime 2023-01-13 14:15:04 +01:00
idle.c s390 updates for 6.3 merge window 2023-02-21 15:09:17 -08:00
ima_arch.c
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ipl.c s390/ipl: add loadparm parameter to eckd ipl/reipl data 2023-02-06 11:13:52 +01:00
ipl_vmparm.c s390/cio: remove unused include linux/spinlock.h from cio.h 2021-07-27 09:39:13 +02:00
irq.c s390/irq,idle: simplify idle check 2023-02-15 11:07:01 +01:00
jump_label.c jump_label: make initial NOP patching the special case 2022-06-24 09:48:55 +02:00
kdebugfs.c
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kexec_elf.c
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kexec_image.c
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kprobes.c s390/kprobes: fix current_kprobe never cleared after kprobes reenter 2023-03-02 15:33:11 +01:00
kprobes.h s390/kprobes: define insn cache ops within private header file 2022-11-23 16:24:07 +01:00
kprobes_insn_page.S s390/kprobes: move insn_page to text segment 2020-10-09 23:45:30 +02:00
lgr.c s390/lgr: use simple assignment instead of memcpy 2022-02-06 23:31:29 +01:00
machine_kexec.c s390/mm: allocate Absolute Lowcore Area in decompressor 2023-01-13 14:15:06 +01:00
machine_kexec_file.c s390/kexec: fix ipl report address for kdump 2023-01-10 14:37:02 +01:00
machine_kexec_reloc.c
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mcount.S s390/kprobes: replace kretprobe with rethook 2023-01-22 18:42:35 +01:00
module.c jump_label: mips: move module NOP patching into arch code 2022-06-24 09:48:55 +02:00
nmi.c s390/mcck: cleanup user process termination path 2023-02-28 13:19:05 +01:00
nospec-branch.c s390: raise minimum supported machine generation to z10 2022-03-10 15:58:17 +01:00
nospec-sysfs.c s390: introduce nospec_uses_trampoline() 2021-10-26 15:21:29 +02:00
numa.c drivers/base/node: consolidate node device subsystem initialization in node_dev_init() 2022-03-22 15:57:10 -07:00
os_info.c s390/mm: allocate Absolute Lowcore Area in decompressor 2023-01-13 14:15:06 +01:00
perf_cpum_cf.c s390 updates for 6.3 merge window 2023-02-21 15:09:17 -08:00
perf_cpum_cf_events.c s390/cpumf: add new extended counter set for IBM z16 2022-05-16 10:58:33 +02:00
perf_cpum_sf.c s390/cpum_sf: use READ_ONCE_ALIGNED_128() instead of 128-bit cmpxchg 2023-02-28 13:19:05 +01:00
perf_event.c s390/stack: add union to reflect kvm stack slot usages 2022-06-01 12:03:17 +02:00
perf_pai_crypto.c perf/core: Add perf_sample_save_raw_data() helper 2023-01-18 11:57:19 +01:00
perf_pai_ext.c s390 updates for 6.3 merge window 2023-02-21 15:09:17 -08:00
perf_regs.c perf/arch: Remove perf_sample_data::regs_user_copy 2020-11-09 18:12:34 +01:00
process.c s390/mm: start kernel with DAT enabled 2023-01-13 14:15:05 +01:00
processor.c s390/cpufeature: rework to allow more than only hwcap bits 2022-07-19 16:18:49 +02:00
ptrace.c s390/vx: use simple assignments to access __vector128 members 2023-02-09 20:11:23 +01:00
reipl.S
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relocate_kernel.S s390/kexec: set end-of-ipl flag in last diag308 call 2022-04-25 13:54:12 +02:00
rethook.c s390/rethook: add local rethook header file 2023-02-06 11:13:53 +01:00
rethook.h s390/rethook: add local rethook header file 2023-02-06 11:13:53 +01:00
runtime_instr.c
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setup.c s390/mem_detect: do not truncate online memory ranges info 2023-02-14 11:45:40 +01:00
signal.c s390/vx: use simple assignments to access __vector128 members 2023-02-09 20:11:23 +01:00
smp.c s390/smp: perform cpu reset before delegating work to target cpu 2023-02-28 13:19:06 +01:00
stacktrace.c s390/kprobes: replace kretprobe with rethook 2023-01-22 18:42:35 +01:00
sthyi.c s390/sthyi: use register pair instead of register asm 2021-06-18 16:41:22 +02:00
syscall.c s390: add support for BEAR enhancement facility 2021-10-26 15:21:29 +02:00
sysinfo.c s390/extable: move EX_TABLE define to asm-extable.h 2022-03-08 00:33:00 +01:00
text_amode31.S s390/tty3270: add support for diag 8c 2023-01-09 14:33:56 +01:00
time.c s390/stp: clock_delta should be signed 2022-05-11 14:40:57 +02:00
topology.c s390: remove invalid email address of Heiko Carstens 2022-02-06 23:31:29 +01:00
trace.c
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traps.c s390/traps: improve panic message for translation-specification exception 2022-03-27 22:18:38 +02:00
unwind_bc.c s390/unwind: avoid duplicated unwinding entries for kretprobes 2022-03-27 22:18:39 +02:00
uprobes.c s390: raise minimum supported machine generation to z10 2022-03-10 15:58:17 +01:00
uv.c KVM: s390: pv: avoid export before import if possible 2022-11-23 09:06:50 +00:00
vdso.c mm: remove zap_page_range and create zap_vma_pages 2023-01-18 17:12:55 -08:00
vmlinux.lds.S s390 updates for 6.3 merge window 2023-02-21 15:09:17 -08:00
vtime.c cputime: remove cputime_to_nsecs fallback 2022-12-27 12:52:17 +01:00