Record Case Detail

Notes

This function is in beta test. Please help improve it in the issues here.

Stderr

 pwd: /out/package
ppid: 4562
   1: WRITELN /bin/ls &
   2: WRITELN sleep 0.2
   3: WRITELN /bin/ls | cat &
   4: WRITELN sleep 0.2
   5: 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 $ =================================================================
==4563==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x619000000980 at pc 0x0000004aa6fa bp 0x7ffdd71da790 sp 0x7ffdd71d9f40
READ of size 1017 at 0x619000000980 thread T0
    #0 0x4aa6f9  (/out/package/mumsh_memory_check+0x4aa6f9)
    #1 0x5165e9  (/out/package/mumsh_memory_check+0x5165e9)
    #2 0x5153f2  (/out/package/mumsh_memory_check+0x5153f2)
    #3 0x7f5495ff2b96  (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
    #4 0x41cce9  (/out/package/mumsh_memory_check+0x41cce9)

0x619000000980 is located 0 bytes to the right of 1024-byte region [0x619000000580,0x619000000980)
allocated by thread T0 here:
    #0 0x4dcba0  (/out/package/mumsh_memory_check+0x4dcba0)
    #1 0x518e48  (/out/package/mumsh_memory_check+0x518e48)
    #2 0x51538a  (/out/package/mumsh_memory_check+0x51538a)
    #3 0x7f5495ff2b96  (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)

SUMMARY: AddressSanitizer: heap-buffer-overflow (/out/package/mumsh_memory_check+0x4aa6

JOJ Answer

mumsh $ [1] /bin/ls &
mumsh $ driver
mumsh
mumsh_memory_check
mumsh $ [2] /bin/ls | cat &
mumsh $ driver
mumsh
mumsh_memory_check
mumsh $ exit