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kexec.c: add MFD_NOEXEC_SEAL flag explicitly #7

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kexec.c: add MFD_NOEXEC_SEAL flag explicitly #7

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6 changes: 5 additions & 1 deletion kexec/kexec.c
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Original file line number Diff line number Diff line change
Expand Up @@ -60,6 +60,10 @@
#define KEXEC_LOADED_PATH "/sys/kernel/kexec_loaded"
#define KEXEC_CRASH_LOADED_PATH "/sys/kernel/kexec_crash_loaded"

#ifndef MFD_NOEXEC_SEAL
#define MFD_NOEXEC_SEAL 0
#endif

unsigned long long mem_min = 0;
unsigned long long mem_max = ULONG_MAX;
unsigned long elfcorehdrsz = 0;
Expand Down Expand Up @@ -655,7 +659,7 @@ static int copybuf_memfd(const char *kernel_buf, size_t size)
{
int fd, count;

fd = memfd_create("kernel", MFD_ALLOW_SEALING);
fd = memfd_create("kernel", MFD_ALLOW_SEALING | MFD_NOEXEC_SEAL);
if (fd == -1)
return fd;

Expand Down