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Revert "[Scudo] enabling anonymous named pages on Linux 5.17 and onwards."

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This reverts commit 6194992523.
This commit is contained in:
Alex Brachet
2022-04-05 16:38:49 +00:00
parent 73714a3c60
commit 016e59bf2c
1 changed files with 7 additions and 5 deletions
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12
compiler-rt/lib/scudo/standalone/linux.cpp
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@@ -28,11 +28,11 @@
#include <time.h>
#include <unistd.h>
#if SCUDO_ANDROID
#include <sys/prctl.h>
// Definitions of prctl arguments to set a vma name in kernels (Linux from 5.17).
#ifndef PR_SET_VMA
#define PR_SET_VMA 0x53564d41
#define PR_SET_VMA_ANON_NAME 0
// Definitions of prctl arguments to set a vma name in Android kernels.
#define ANDROID_PR_SET_VMA 0x53564d41
#define ANDROID_PR_SET_VMA_ANON_NAME 0
#endif
namespace scudo {
@@ -66,8 +66,10 @@ void *map(void *Addr, uptr Size, UNUSED const char *Name, uptr Flags,
dieOnMapUnmapError(errno == ENOMEM ? Size : 0);
return nullptr;
}
#if SCUDO_ANDROID
if (Name)
prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, P, Size, Name);
prctl(ANDROID_PR_SET_VMA, ANDROID_PR_SET_VMA_ANON_NAME, P, Size, Name);
#endif
return P;
}