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| author |   Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-10-13 16:43:54 +0200 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2021-10-14 21:47:34 +1100 |
| commit | 3091f5fc5f1df7741ddf326561384e0997eca2a1 (patch) | |
| tree | 3e17c2810ec510cb4835f31cd9dba76b7329465a /arch/powerpc/mm/book3s64/radix_pgtable.c | |
| parent | powerpc/perf: Fix cycles/instructions as PM_CYC/PM_INST_CMPL in power10 (diff) | |
| download | linux-dev-3091f5fc5f1df7741ddf326561384e0997eca2a1.tar.xz linux-dev-3091f5fc5f1df7741ddf326561384e0997eca2a1.zip | |
powerpc: Mark .opd section read-only
.opd section contains function descriptors used to locate
functions in the kernel. If someone is able to modify a
function descriptor he will be able to run arbitrary
kernel function instead of another.
To avoid that, move .opd section inside read-only memory.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/3cd40b682fb6f75bb40947b55ca0bac20cb3f995.1634136222.git.christophe.leroy@csgroup.eu
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions