diff options
| author | Dmitry Vyukov <dvyukov@google.com> | 2024-09-18 17:38:12 +0200 |
|---|---|---|
| committer | Dmitry Vyukov <dvyukov@google.com> | 2024-09-19 08:37:17 +0000 |
| commit | 52c1f8045c38bcce0229b2cc3c69b1cbe21eb629 (patch) | |
| tree | 6795b28e4d5cf644369433d5e1906fbf1bfe7e1b /executor | |
| parent | 6d197301fe4a048a54f3203599963947b6563bd9 (diff) | |
sys/linux: add syz_create_resource
syz_create_resource allows to turn any value into a resource.
Improve binfmt descriptions using syz_create_resource:
we need to pass the same file name to write syscalls and execve.
Use syz_create_resource to improve binfmt descriptions.
Diffstat (limited to 'executor')
| -rw-r--r-- | executor/common_linux.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/executor/common_linux.h b/executor/common_linux.h index 7356499de..30d29cb05 100644 --- a/executor/common_linux.h +++ b/executor/common_linux.h @@ -2277,6 +2277,19 @@ static long syz_memcpy_off(volatile long a0, volatile long a1, volatile long a2, } #endif +#if SYZ_EXECUTOR || __NR_syz_create_resource +// syz_create_resource(val intptr) intptr +// Variants of this pseudo-syscall are used to create resources from arbitrary values. +// For example: +// syz_create_resource$foo(x int32) resource_foo +// allows the fuzzer to use the same random int32 value in multiple syscalls, +// and should increase probability of generation of syscalls related to foo. +static long syz_create_resource(volatile long val) +{ + return val; +} +#endif + #if (SYZ_EXECUTOR || SYZ_REPEAT && SYZ_NET_INJECTION) && SYZ_EXECUTOR_USES_FORK_SERVER static void flush_tun() { |