mirror
/
linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
linux/arch/s390/kernel
History
Heiko Carstens 41e1992665 s390: workaround invalid gcc-11 out of bounds read warning 
GCC 11.1.0 and 11.2.0 generate a wrong warning when compiling the
kernel e.g. with allmodconfig:

arch/s390/kernel/setup.c: In function ‘setup_lowcore_dat_on’:
./include/linux/fortify-string.h:57:33: error: ‘__builtin_memcpy’ reading 128 bytes from a region of size 0 [-Werror=stringop-overread]
...
arch/s390/kernel/setup.c:526:9: note: in expansion of macro ‘memcpy’
  526 |         memcpy(abs_lc->cregs_save_area, S390_lowcore.cregs_save_area,
      |         ^~~~~~

This could be addressed by using absolute_pointer() with the
S390_lowcore macro, but this is not a good idea since this generates
worse code for performance critical paths.

Therefore simply use a for loop to copy the array in question and get
rid of the warning.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
 		2023-01-17 19:00:59 +01:00
..
syscalls
…
vdso32
…
vdso64
…
.gitignore
…
Makefile Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
abs_lowcore.c s390/smp: rework absolute lowcore access 2022-09-14 16:46:00 +02:00
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.h
…
cache.c
…
compat_audit.c
…
compat_linux.c
…
compat_linux.h s390/compat: cleanup compat_linux.h header file 2022-05-06 20:45:16 +02:00
compat_ptrace.h
…
compat_signal.c
…
cpcmd.c
…
cpufeature.c s390/uvdevice: autoload module based on CPU facility 2022-07-19 16:18:49 +02:00
crash_dump.c iov_iter work; most of that is about getting rid of 2022-12-12 18:29:54 -08:00
debug.c s390/debug: remove function type cast 2022-11-23 16:24:07 +01:00
diag.c
…
dis.c
…
dumpstack.c
…
early.c s390: move from strlcpy with unused retval to strscpy 2022-08-30 22:00:33 +02:00
early_printk.c
…
earlypgm.S s390: generate register offsets into pt_regs automatically 2022-05-25 11:46:02 +02:00
ebcdic.c
…
entry.S ARM64: 2022-12-15 11:12:21 -08:00
entry.h s390: simplify early program check handler 2022-05-25 11:46:02 +02:00
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
…
guarded_storage.c
…
head64.S
…
idle.c
…
ima_arch.c
…
ipl.c s390/ipl: use octal values instead of S_* macros 2022-12-06 16:18:22 +01:00
ipl_vmparm.c
…
irq.c s390/irq: utilize RCU instead of irq_lock_sparse() in show_msi_interrupt() 2022-04-27 12:53:34 +02:00
jump_label.c jump_label: make initial NOP patching the special case 2022-06-24 09:48:55 +02:00
kdebugfs.c
…
kexec_elf.c
…
kexec_image.c
…
kprobes.c s390/kprobes: define insn cache ops within private header file 2022-11-23 16:24:07 +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
…
lgr.c
…
machine_kexec.c s390/smp: rework absolute lowcore access 2022-09-14 16:46:00 +02:00
machine_kexec_file.c s390/kexec: fix ipl report address for kdump 2023-01-10 14:37:02 +01:00
machine_kexec_reloc.c
…
mcount.S
…
module.c jump_label: mips: move module NOP patching into arch code 2022-06-24 09:48:55 +02:00
nmi.c s390/nmi: get rid of private slab cache 2022-12-06 16:18:26 +01:00
nospec-branch.c
…
nospec-sysfs.c
…
numa.c
…
os_info.c s390/mm: uninline copy_oldmem_kernel() function 2022-09-14 16:46:01 +02:00
perf_cpum_cf.c perf: Use sample_flags for raw_data 2022-09-27 22:50:24 +02:00
perf_cpum_cf_common.c
…
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: add READ_ONCE() semantics to compare and swap loops 2023-01-11 15:28:34 +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 events updates for v6.2: 2022-12-12 15:19:38 -08:00
perf_pai_ext.c Perf events updates for v6.2: 2022-12-12 15:19:38 -08:00
perf_regs.c
…
process.c treewide: use get_random_u32_below() instead of deprecated function 2022-11-18 02:15:15 +01:00
processor.c s390/cpufeature: rework to allow more than only hwcap bits 2022-07-19 16:18:49 +02:00
ptrace.c
…
reipl.S
…
relocate_kernel.S s390/kexec: set end-of-ipl flag in last diag308 call 2022-04-25 13:54:12 +02:00
runtime_instr.c
…
setup.c s390: workaround invalid gcc-11 out of bounds read warning 2023-01-17 19:00:59 +01:00
signal.c
…
smp.c s390/mm: uninline copy_oldmem_kernel() function 2022-09-14 16:46:01 +02:00
stacktrace.c
…
sthyi.c
…
syscall.c
…
sysinfo.c
…
text_amode31.S
…
time.c s390/stp: clock_delta should be signed 2022-05-11 14:40:57 +02:00
topology.c
…
trace.c
…
traps.c
…
unwind_bc.c
…
uprobes.c
…
uv.c KVM: s390: pv: avoid export before import if possible 2022-11-23 09:06:50 +00:00
vdso.c Random number generator updates for Linux 6.2-rc1. 2022-12-12 16:22:22 -08:00
vmlinux.lds.S s390: define RUNTIME_DISCARD_EXIT to fix link error with GNU ld < 2.36 2023-01-06 16:38:21 +01:00
vtime.c
…