Version:4.14-ab28d7f1e5ab9b51f5708741bd13f92e768123d4
1.file_ioctl.c:130
125 int
126 file_ioctl(struct tcb *tcp, const unsigned int code, const long arg)
127 {
128 switch (code) {
129 case FICLONE: /* W */
130 tprintf(", %d", (int) arg);
131 break
There is a segfault if strace is called as `strace -p 2260 -k`.
The -k flag sets a global bool stack_trace_enabled. But -p already consults
stack_trace_enabled during tcb initialization. So if -p is passed first,
the libunwind components of the tcb are uninitialized.
The attached patch fixes this
