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-rw-r--r--pkg/sentry/strace/linux64_amd64.go2
-rw-r--r--pkg/sentry/strace/linux64_arm64.go2
-rw-r--r--pkg/sentry/syscalls/linux/sys_signal.go5
3 files changed, 7 insertions, 2 deletions
diff --git a/pkg/sentry/strace/linux64_amd64.go b/pkg/sentry/strace/linux64_amd64.go
index 1e823b685..85ec66fd3 100644
--- a/pkg/sentry/strace/linux64_amd64.go
+++ b/pkg/sentry/strace/linux64_amd64.go
@@ -37,7 +37,7 @@ var linuxAMD64 = SyscallMap{
10: makeSyscallInfo("mprotect", Hex, Hex, Hex),
11: makeSyscallInfo("munmap", Hex, Hex),
12: makeSyscallInfo("brk", Hex),
- 13: makeSyscallInfo("rt_sigaction", Signal, SigAction, PostSigAction),
+ 13: makeSyscallInfo("rt_sigaction", Signal, SigAction, PostSigAction, Hex),
14: makeSyscallInfo("rt_sigprocmask", SignalMaskAction, SigSet, PostSigSet, Hex),
15: makeSyscallInfo("rt_sigreturn"),
16: makeSyscallInfo("ioctl", FD, Hex, Hex),
diff --git a/pkg/sentry/strace/linux64_arm64.go b/pkg/sentry/strace/linux64_arm64.go
index c3ac5248d..8bc38545f 100644
--- a/pkg/sentry/strace/linux64_arm64.go
+++ b/pkg/sentry/strace/linux64_arm64.go
@@ -158,7 +158,7 @@ var linuxARM64 = SyscallMap{
131: makeSyscallInfo("tgkill", Hex, Hex, Signal),
132: makeSyscallInfo("sigaltstack", Hex, Hex),
133: makeSyscallInfo("rt_sigsuspend", Hex),
- 134: makeSyscallInfo("rt_sigaction", Signal, SigAction, PostSigAction),
+ 134: makeSyscallInfo("rt_sigaction", Signal, SigAction, PostSigAction, Hex),
135: makeSyscallInfo("rt_sigprocmask", SignalMaskAction, SigSet, PostSigSet, Hex),
136: makeSyscallInfo("rt_sigpending", Hex),
137: makeSyscallInfo("rt_sigtimedwait", SigSet, Hex, Timespec, Hex),
diff --git a/pkg/sentry/syscalls/linux/sys_signal.go b/pkg/sentry/syscalls/linux/sys_signal.go
index 209be2990..7e1747a0c 100644
--- a/pkg/sentry/syscalls/linux/sys_signal.go
+++ b/pkg/sentry/syscalls/linux/sys_signal.go
@@ -245,6 +245,11 @@ func RtSigaction(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.S
sig := linux.Signal(args[0].Int())
newactarg := args[1].Pointer()
oldactarg := args[2].Pointer()
+ sigsetsize := args[3].SizeT()
+
+ if sigsetsize != linux.SignalSetSize {
+ return 0, nil, syserror.EINVAL
+ }
var newactptr *arch.SignalAct
if newactarg != 0 {