Record Case Detail

Notes

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Stderr

 pwd: /out/package
ppid: 90792
   1: WRITELN sleep 10
   2: CTRL+C
Scan child pids of ppid: 90792
SIGINT
Send signal 2 to pid: 90792
Scan child pids of ppid: 90793
Send signal 2 to pid: 90793
Scan child pids of ppid: 90794
Send signal 2 to pid: 90794
   3: WRITELN echo 123 > 1.txt
   4: WRITELN sleep 10 > 1.txt
   5: CTRL+C
Scan child pids of ppid: 90792
SIGINT
Send signal 2 to pid: 90792
Scan child pids of ppid: 90793
Send signal 2 to pid: 90793
Scan child pids of ppid: 90794
Send signal 2 to pid: 90794
Scan child pids of ppid: 90795
Send signal 2 to pid: 90795
Scan child pids of ppid: 90796
Send signal 2 to pid: 90796
Scan child pids of ppid: 90797
Send signal 2 to pid: 90797
   6: WRITELN cat 1.txt
   7: WRITELN echo success
   8: CTRL+C
Scan child pids of ppid: 90792
SIGINT
Send signal 2 to pid: 90792
Scan child pids of ppid: 90793
Send signal 2 to pid: 90793
Scan child pids of ppid: 90794
Send signal 2 to pid: 90794
Scan child pids of ppid: 90795
Send signal 2 to pid: 90795
Scan child pids of ppid: 90796

Hints

Your answer may be identical to the JOJ answer in the first several lines.

However, you will still get Wrong Answer because the complete output may be longer and there might be errors in the future lines.

Please double check your code to solve this problem and try again.

Your Answer

mumsh $ /in/main.c:111:13: runtime error: index 1024 out of bounds for type 'char [1024]'
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /in/main.c:111:13 in 
=================================================================
==90793==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7ffcc1b5a800 at pc 0x000000517104 bp 0x7ffcc1b5a3d0 sp 0x7ffcc1b5a3c8
WRITE of size 1 at 0x7ffcc1b5a800 thread T0
    #0 0x517103  (/out/package/mumsh_memory_check+0x517103)
    #1 0x522303  (/out/package/mumsh_memory_check+0x522303)
    #2 0x7f83444c5b96  (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
    #3 0x41d039  (/out/package/mumsh_memory_check+0x41d039)

Address 0x7ffcc1b5a800 is located in stack of thread T0 at offset 1056 in frame
    #0 0x51682f  (/out/package/mumsh_memory_check+0x51682f)

  This frame has 2 object(s):
    [32, 1056) 'command' <== Memory access at offset 1056 overflows this variable
    [1184, 1192) 'fd424'
HINT: this may be a false positive if your program uses some custom stack unwind me

JOJ Answer

mumsh $ 
mumsh $ mumsh $ 
mumsh $ mumsh $ success
mumsh $ 
mumsh $ exit