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authorMichael Ellerman <mpe@ellerman.id.au>2022-09-27 17:04:18 +0200
committerMichael Ellerman <mpe@ellerman.id.au>2022-09-28 14:21:11 +0200
commitbbd71709087a9d486d1da42399eec14e106072f2 (patch)
tree3f65089e980e37160eb447d5d4934d9afeebfc59 /arch/powerpc/include/asm/ptrace.h
parentpowerpc/kprobes: Fix null pointer reference in arch_prepare_kprobe() (diff)
downloadlinux-bbd71709087a9d486d1da42399eec14e106072f2.tar.xz
linux-bbd71709087a9d486d1da42399eec14e106072f2.zip
powerpc: Make stack frame marker upper case
Now that the stack frame regs marker is only 32-bits it is not as obvious in memory dumps and easier to miss, eg: c000000004733e40 0000000000000000 0000000000000000 |................| c000000004733e50 0000000000000000 0000000000000000 |................| c000000004733e60 0000000000000000 0000000000000000 |................| c000000004733e70 7367657200000000 0000000000000000 |sger............| c000000004733e80 a700000000000000 708897f7ff7f0000 |........p.......| c000000004733e90 0073428fff7f0000 208997f7ff7f0000 |.sB..... .......| c000000004733ea0 0100000000000000 ffffffffffffffff |................| c000000004733eb0 0000000000000000 0000000000000000 |................| So make it upper case to make it stand out a bit more: c000000004733e70 5347455200000000 0000000000000000 |SGER............| Acked-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220927150419.1503001-1-mpe@ellerman.id.au
Diffstat (limited to 'arch/powerpc/include/asm/ptrace.h')
-rw-r--r--arch/powerpc/include/asm/ptrace.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/ptrace.h b/arch/powerpc/include/asm/ptrace.h
index 5b496e589d54..6c23d1d25dc7 100644
--- a/arch/powerpc/include/asm/ptrace.h
+++ b/arch/powerpc/include/asm/ptrace.h
@@ -99,7 +99,7 @@ struct pt_regs
#define STACK_FRAME_WITH_PT_REGS (STACK_FRAME_OVERHEAD + sizeof(struct pt_regs))
-#define STACK_FRAME_REGS_MARKER ASM_CONST(0x72656773)
+#define STACK_FRAME_REGS_MARKER ASM_CONST(0x52454753)
#ifdef __powerpc64__