diff options
| author | Dmitry Vyukov <dvyukov@google.com> | 2023-04-03 07:45:09 +0200 |
|---|---|---|
| committer | Dmitry Vyukov <dvyukov@google.com> | 2023-04-03 10:29:09 +0200 |
| commit | d04ac3a54895a36998e3f1da27c2ce33f7a80c5a (patch) | |
| tree | e79bc6b62402f2b9e1b4cf91bc38b2a6c404e7b1 /pkg/csource | |
| parent | 7c00f48c0c766f7abd4601bd9848527dd1e4be77 (diff) | |
sys/linux: add syz_pkey_set syscalls
The syscall sets PKRU register which is part of protection keys (pkey).
Diffstat (limited to 'pkg/csource')
| -rw-r--r-- | pkg/csource/generated.go | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/pkg/csource/generated.go b/pkg/csource/generated.go index 552cc9191..204d6d2ee 100644 --- a/pkg/csource/generated.go +++ b/pkg/csource/generated.go @@ -11378,6 +11378,25 @@ static long syz_clone3(volatile long a0, volatile long a1) #endif +#if SYZ_EXECUTOR || __NR_syz_pkey_set +static long syz_pkey_set(volatile long pkey, volatile long val) +{ +#if GOARCH_amd64 || GOARCH_386 + uint32 eax = 0; + uint32 ecx = 0; + asm volatile("rdpkru" + : "=a"(eax) + : "c"(ecx) + : "edx"); + eax &= ~(3 << ((pkey % 16) * 2)); + eax |= (val & 3) << ((pkey % 16) * 2); + uint32 edx = 0; + asm volatile("wrpkru" ::"a"(eax), "c"(ecx), "d"(edx)); +#endif + return 0; +} +#endif + #elif GOOS_test #include <stdlib.h> |