4c852d5c4e
[ Upstream commit 75c10d5377d8821efafed32e4d72068d9c1f8ec0 ] The .data.rel.ro and .got section were added between the rodata and ro_after_init data section, which adds an RW mapping in between all RO mapping of the kernel image: ---[ Kernel Image Start ]--- 0x000003ffe0000000-0x000003ffe0e00000 14M PMD RO X 0x000003ffe0e00000-0x000003ffe0ec7000 796K PTE RO X 0x000003ffe0ec7000-0x000003ffe0f00000 228K PTE RO NX 0x000003ffe0f00000-0x000003ffe1300000 4M PMD RO NX 0x000003ffe1300000-0x000003ffe1331000 196K PTE RO NX 0x000003ffe1331000-0x000003ffe13b3000 520K PTE RW NX <--- 0x000003ffe13b3000-0x000003ffe13d5000 136K PTE RO NX 0x000003ffe13d5000-0x000003ffe1400000 172K PTE RW NX 0x000003ffe1400000-0x000003ffe1500000 1M PMD RW NX 0x000003ffe1500000-0x000003ffe1700000 2M PTE RW NX 0x000003ffe1700000-0x000003ffe1800000 1M PMD RW NX 0x000003ffe1800000-0x000003ffe187e000 504K PTE RW NX ---[ Kernel Image End ]--- Move the ro_after_init data section again right behind the rodata section to prevent interleaving RO and RW mappings: ---[ Kernel Image Start ]--- 0x000003ffe0000000-0x000003ffe0e00000 14M PMD RO X 0x000003ffe0e00000-0x000003ffe0ec7000 796K PTE RO X 0x000003ffe0ec7000-0x000003ffe0f00000 228K PTE RO NX 0x000003ffe0f00000-0x000003ffe1300000 4M PMD RO NX 0x000003ffe1300000-0x000003ffe1353000 332K PTE RO NX 0x000003ffe1353000-0x000003ffe1400000 692K PTE RW NX 0x000003ffe1400000-0x000003ffe1500000 1M PMD RW NX 0x000003ffe1500000-0x000003ffe1700000 2M PTE RW NX 0x000003ffe1700000-0x000003ffe1800000 1M PMD RW NX 0x000003ffe1800000-0x000003ffe187e000 504K PTE RW NX ---[ Kernel Image End ]--- Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Sasha Levin <sashal@kernel.org> |
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.. | ||
syscalls | ||
vdso64 | ||
alternative.c | ||
asm-offsets.c | ||
audit.c | ||
audit.h | ||
base.S | ||
cache.c | ||
compat_audit.c | ||
compat_linux.c | ||
compat_linux.h | ||
compat_ptrace.h | ||
compat_signal.c | ||
cpcmd.c | ||
crash_dump.c | ||
debug.c | ||
diag.c | ||
dis.c | ||
dumpstack.c | ||
early.c | ||
early_printk.c | ||
ebcdic.c | ||
entry.h | ||
entry.S | ||
fpu.c | ||
ftrace.c | ||
guarded_storage.c | ||
head64.S | ||
idle.c | ||
ima_arch.c | ||
ipl.c | ||
ipl_vmparm.c | ||
irq.c | ||
jump_label.c | ||
kdebugfs.c | ||
kexec_elf.c | ||
kexec_image.c | ||
kprobes.c | ||
kprobes_insn_page.S | ||
lgr.c | ||
machine_kexec.c | ||
machine_kexec_file.c | ||
machine_kexec_reloc.c | ||
Makefile | ||
mcount.S | ||
module.c | ||
nmi.c | ||
nospec-branch.c | ||
nospec-sysfs.c | ||
numa.c | ||
os_info.c | ||
perf_cpum_cf.c | ||
perf_cpum_cf_common.c | ||
perf_cpum_cf_diag.c | ||
perf_cpum_cf_events.c | ||
perf_cpum_sf.c | ||
perf_event.c | ||
perf_regs.c | ||
pgm_check.S | ||
process.c | ||
processor.c | ||
ptrace.c | ||
reipl.S | ||
relocate_kernel.S | ||
runtime_instr.c | ||
setup.c | ||
signal.c | ||
smp.c | ||
stacktrace.c | ||
sthyi.c | ||
sys_s390.c | ||
sysinfo.c | ||
time.c | ||
topology.c | ||
trace.c | ||
traps.c | ||
unwind_bc.c | ||
uprobes.c | ||
uv.c | ||
vdso.c | ||
vmlinux.lds.S | ||
vtime.c |