26 lines
896 B
Diff
26 lines
896 B
Diff
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--- qemu-2.2.0/linux-user/syscall.c.orig 2014-12-09 14:45:43.000000000 +0000
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+++ qemu-2.2.0/linux-user/syscall.c 2015-03-27 06:33:00.736000000 +0000
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@@ -227,7 +227,21 @@
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_syscall3(int,sys_rt_sigqueueinfo,int,pid,int,sig,siginfo_t *,uinfo)
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_syscall3(int,sys_syslog,int,type,char*,bufp,int,len)
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#if defined(TARGET_NR_tgkill) && defined(__NR_tgkill)
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-_syscall3(int,sys_tgkill,int,tgid,int,pid,int,sig)
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+
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+extern unsigned int afl_forksrv_pid;
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+
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+static int sys_tgkill(int tgid, int pid, int sig) {
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+
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+ /* Workaround for -lpthread to make abort() work properly, without
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+ killing the forkserver due to a prematurely cached PID. */
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+
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+ if (afl_forksrv_pid && afl_forksrv_pid == pid && sig == SIGABRT)
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+ pid = tgid = getpid();
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+
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+ return syscall(__NR_sys_tgkill, pid, tgid, sig);
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+
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+}
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+
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#endif
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#if defined(TARGET_NR_tkill) && defined(__NR_tkill)
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_syscall2(int,sys_tkill,int,tid,int,sig)
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