diff options
| author | Aleksandr Nogikh <nogikh@google.com> | 2021-12-01 17:25:40 +0000 |
|---|---|---|
| committer | Aleksandr Nogikh <wp32pw@gmail.com> | 2021-12-10 12:30:07 +0100 |
| commit | 18f846ca807cfc6df9c3da3c0ab08251277dfefb (patch) | |
| tree | e14f783b914409f21ae77a01a6b74ededaba6901 /pkg/csource/csource.go | |
| parent | 52c8379f77b5f292e2d527c66dfe17a899381d20 (diff) | |
all: add the `rerun` call property
To be able to collide specific syscalls more precisely, we need to
repeat the process many times.
Introduce the `rerun` call property, which instructs `syz-executor` to
repeat the call the specified number of times. The intended use is:
call1() (rerun: 100, async)
call2() (rerun: 100)
For now, assign rerun values randomly to consecutive pairs of calls,
where the first one is async.
Diffstat (limited to 'pkg/csource/csource.go')
| -rw-r--r-- | pkg/csource/csource.go | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/pkg/csource/csource.go b/pkg/csource/csource.go index 32e01ff1e..6dd8bdcd6 100644 --- a/pkg/csource/csource.go +++ b/pkg/csource/csource.go @@ -253,6 +253,14 @@ func (ctx *context) generateCalls(p prog.ExecProg, trace bool) ([]string, []uint ctx.emitCall(w, call, ci, resCopyout || argCopyout, trace) + if call.Props.Rerun > 0 { + // TODO: remove this legacy C89-style definition once we figure out what to do with Akaros. + fmt.Fprintf(w, "\t{\n\tint i;\n") + fmt.Fprintf(w, "\tfor(i = 0; i < %v; i++) {\n", call.Props.Rerun) + // Rerun invocations should not affect the result value. + ctx.emitCall(w, call, ci, false, false) + fmt.Fprintf(w, "\t\t}\n\t}\n") + } // Copyout. if resCopyout || argCopyout { ctx.copyout(w, call, resCopyout) |