Syscall fault injection strace

Force the 3rd openat to fail with ENOENT to test error handling; chaos testing without code

strace -f -e inject=openat:error=ENOENT:when=3 -p <pid>

#strace #debug #troubleshooting #ci

more strace all 13 commands →

Trace signals delivered strace -f -e signal=all -e trace=none -p <pid> Trace a new process strace -o trace.log ls /tmp Attach to running process strace -p $(pgrep nginx | head -1) -o /tmp/nginx.trace Trace only specific syscalls strace -e trace=openat,read,write curl https://example.com Count syscall statistics strace -c -e trace=all python3 app.py