Record Case Detail

Notes

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Stderr

 pwd: /out/package
ppid: 28883
   1: WRITELN sleep 10 | sleep 10 | sleep 10 | sleep 10 | sleep 10 | sleep 10 | sleep 10 | sleep 10 | sleep 10 | echo 123
   2: CTRL+C
Scan child pids of ppid: 28883
SIGINT
Send signal 2 to pid: 28883
Scan child pids of ppid: 28884
Send signal 2 to pid: 28884
Scan child pids of ppid: 28885
Send signal 2 to pid: 28885
   3: CTRL+C
Scan child pids of ppid: 28883
SIGINT
Send signal 2 to pid: 28883
Scan child pids of ppid: 28884
Send signal 2 to pid: 28884
Scan child pids of ppid: 28888
Send signal 2 to pid: 28888
   4: WRITELN echo success
   5: CTRL+C
Scan child pids of ppid: 28883
SIGINT
Send signal 2 to pid: 28883
Scan child pids of ppid: 28884
Send signal 2 to pid: 28884
Scan child pids of ppid: 28891
Send signal 2 to pid: 28891
   6: WRITELN exit
exit: 1

Hints

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

However, the main problem you meet now is Runtime Error. And the exit code of your program is 1, which should be 0.

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

Your Answer

mumsh $ =================================================================
==28884==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7ffe9a46fc40 at pc 0x0000005173f2 bp 0x7ffe9a46fb40 sp 0x7ffe9a46fb38
WRITE of size 8 at 0x7ffe9a46fc40 thread T0
    #0 0x5173f1  (/out/package/mumsh_memory_check+0x5173f1)
    #1 0x515249  (/out/package/mumsh_memory_check+0x515249)
    #2 0x7f9f4a24bb96  (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
    #3 0x41cd89  (/out/package/mumsh_memory_check+0x41cd89)

Address 0x7ffe9a46fc40 is located in stack of thread T0 at offset 192 in frame
    #0 0x51518f  (/out/package/mumsh_memory_check+0x51518f)

  This frame has 1 object(s):
    [32, 192) 'parsedCommand' <== Memory access at offset 192 overflows this variable
HINT: this may be a false positive if your program uses some custom stack unwind mechanism or swapcontext
      (longjmp and C++ exceptions *are* supported)
SUMMARY: AddressSanitizer: stack-buffer-overflow (/out/package/mumsh_memory_check+0x5173f1) 
Shadow bytes ar

JOJ Answer

mumsh $ 123

mumsh $ 
mumsh $ success
mumsh $ 
mumsh $ exit