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Diffstat (limited to 'arch/um/os-Linux/mem.c')
| -rw-r--r-- | arch/um/os-Linux/mem.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/arch/um/os-Linux/mem.c b/arch/um/os-Linux/mem.c index cf44d386f23c..72f302f4d197 100644 --- a/arch/um/os-Linux/mem.c +++ b/arch/um/os-Linux/mem.c @@ -39,10 +39,22 @@ void kasan_map_memory(void *start, size_t len) strerror(errno)); exit(1); } + + if (madvise(start, len, MADV_DONTDUMP)) { + os_info("Couldn't set MAD_DONTDUMP on shadow memory: %s\n.", + strerror(errno)); + exit(1); + } + + if (madvise(start, len, MADV_DONTFORK)) { + os_info("Couldn't set MADV_DONTFORK on shadow memory: %s\n.", + strerror(errno)); + exit(1); + } } /* Set by make_tempfile() during early boot. */ -static char *tempdir = NULL; +char *tempdir = NULL; /* Check if dir is on tmpfs. Return 0 if yes, -1 if no or error. */ static int __init check_tmpfs(const char *dir) |