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| author | Hrutvik Kanabar <hrutvik@google.com> | 2022-09-19 10:19:25 +0000 |
|---|---|---|
| committer | Marco Elver <me@marcoelver.com> | 2022-09-22 16:42:04 +0200 |
| commit | 800605ed4763b8457f8238c9168ff71ce82d6b7c (patch) | |
| tree | ee957137d30dcdd4b8efb5b6668ed5b7c82d9ff3 /prog | |
| parent | c9dfe30e8bd19c371375c14d80a1e54cf88193ce (diff) | |
prog: add an attribute for syscalls which should not be minimized
Create a `no_minimize` attribute to be used with syscalls that
`syzkaller` should not try to modify when minimizing a program that
produces a bug. The intention is to use this with syscalls that are
expensive to minimize, such as `syz_mount_image`.
Currently there are no `no_minimize` syscalls, but the next commit will
add some.
Diffstat (limited to 'prog')
| -rw-r--r-- | prog/minimization.go | 3 | ||||
| -rw-r--r-- | prog/types.go | 1 |
2 files changed, 4 insertions, 0 deletions
diff --git a/prog/minimization.go b/prog/minimization.go index fcb681054..ee8f565c9 100644 --- a/prog/minimization.go +++ b/prog/minimization.go @@ -35,6 +35,9 @@ func Minimize(p0 *Prog, callIndex0 int, crash bool, pred0 func(*Prog, int) bool) // Try to minimize individual calls. for i := 0; i < len(p0.Calls); i++ { + if p0.Calls[i].Meta.Attrs.NoMinimize { + continue + } ctx := &minimizeArgsCtx{ target: p0.Target, p0: &p0, diff --git a/prog/types.go b/prog/types.go index a90c1d562..07eb54395 100644 --- a/prog/types.go +++ b/prog/types.go @@ -39,6 +39,7 @@ type SyscallAttrs struct { IgnoreReturn bool BreaksReturns bool NoGenerate bool + NoMinimize bool } // MaxArgs is maximum number of syscall arguments. |