bug(dd): when skip= is a very large number it panics
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U - dd
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- Rust
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Description
Hi, uutils mainteners
we confirmed dd in the fourth panics when skip= is a very large number
relunsec@relunsec:~/software/coreutils/target/debug$ ./dd if=a of=b skip=177272772262766267
thread 'main' (110372) panicked at src/uu/dd/src/dd.rs:164:32:
attempt to multiply with overflow
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
relunsec@relunsec:~/software/coreutils/target/debug$
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Research direction
Reproduce the panic with the provided dd command, then inspect src/uu/dd/src/dd.rs around line 164 to trace how the large skip value is handled. Confirm the fix by rerunning the same command and verifying that it no longer panics.
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Assessment
- Tech stack
- rust
- Domain
- cli
- Issue type
- Bug
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Activity status
- Quiet
- Clarity
- Clearly specified
- Newbie friendliness
- 78/100