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diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 280137da..8c0e749f 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -112,6 +112,9 @@
#include "qemu.h"
#include "fd-trans.h"
+#include <linux/sockios.h>
+extern unsigned int afl_forksrv_pid;
+
#ifndef CLONE_IO
#define CLONE_IO 0x80000000 /* Clone io context */
#endif
@@ -10799,8 +10801,19 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
return get_errno(safe_tkill((int)arg1, target_to_host_signal(arg2)));
case TARGET_NR_tgkill:
- return get_errno(safe_tgkill((int)arg1, (int)arg2,
- target_to_host_signal(arg3)));
+ {
+ int pid = (int)arg1,
+ tgid = (int)arg2,
+ sig = (int)arg3;
+
+ /* Not entirely sure if the below is correct for all architectures. */
+
+ if(afl_forksrv_pid && afl_forksrv_pid == pid && sig == SIGABRT)
+ pid = tgid = getpid();
+
+ ret = get_errno(safe_tgkill(pid, tgid, target_to_host_signal(sig)));
+
+ }
#ifdef TARGET_NR_set_robust_list
case TARGET_NR_set_robust_list:
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