From: Nicholas Piggin <npiggin@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Nicholas Piggin <npiggin@gmail.com>
Subject: [PATCH] powerpc: Fix writable sections being moved into the rodata region
Date: Wed, 16 Nov 2022 14:39:53 +1000 [thread overview]
Message-ID: <20221116043954.3307852-1-npiggin@gmail.com> (raw)
.data.rel.ro* catches .data.rel.root_cpuacct, and the kernel crashes on
a store in css_clear_dir. At least we know read-only data protection is
working...
Fixes: b6adc6d6d3272 ("powerpc/build: move .data.rel.ro, .sdata2 to read-only")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
arch/powerpc/kernel/vmlinux.lds.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index 7786e3ac7611..8c3862b4c259 100644
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -142,7 +142,7 @@ SECTIONS
#endif
.data.rel.ro : AT(ADDR(.data.rel.ro) - LOAD_OFFSET) {
- *(.data.rel.ro*)
+ *(.data.rel.ro .data.rel.ro.*)
}
.branch_lt : AT(ADDR(.branch_lt) - LOAD_OFFSET) {
--
2.37.2
next reply other threads:[~2022-11-16 4:42 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-16 4:39 Nicholas Piggin [this message]
2022-11-16 7:35 ` [PATCH] powerpc: Fix writable sections being moved into the rodata region Christophe Leroy
2022-11-20 1:31 ` Michael Ellerman
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