diff options
| author | Aleksandr Nogikh <nogikh@google.com> | 2022-01-12 13:54:32 +0000 |
|---|---|---|
| committer | Aleksandr Nogikh <wp32pw@gmail.com> | 2022-01-13 17:03:14 +0100 |
| commit | f635b41d90ee4c01636d9b7f67091aa2ce2c2f20 (patch) | |
| tree | 51a479e96f86fa7b3cca4aff90f9067da6182b33 /pkg/csource | |
| parent | 40c93acdacf984554ac152f1b7f06ba400fde8b0 (diff) | |
all: explicitly list pseudo syscall dependencies
Pseudo syscalls can (and most of the time) do invoke normal system
calls. However, when there's a risk that those calls might not be
present, syzkaller needs to take preventive actions - prepend the
corresponding defines. Otherwise syz-executor or C reproducers might
not compile on the host machine.
List those dependencies in sys/targets, check them during machine check
and add the corresponding defines during C source generation.
Diffstat (limited to 'pkg/csource')
| -rw-r--r-- | pkg/csource/csource.go | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/pkg/csource/csource.go b/pkg/csource/csource.go index 6dd8bdcd6..1ba433f45 100644 --- a/pkg/csource/csource.go +++ b/pkg/csource/csource.go @@ -73,6 +73,13 @@ func (ctx *context) generateSource() ([]byte, error) { for _, c := range append(mmapProg.Calls, ctx.p.Calls...) { ctx.calls[c.Meta.CallName] = c.Meta.NR + for _, dep := range ctx.sysTarget.PseudoSyscallDeps[c.Meta.CallName] { + depCall := ctx.target.SyscallMap[dep] + if depCall == nil { + panic(dep + " is specified in PseudoSyscallDeps, but not present") + } + ctx.calls[depCall.CallName] = depCall.NR + } } varsBuf := new(bytes.Buffer) |