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lab6/Answer.md

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Name:
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ID:
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Name: 楊杰峰
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ID: 510558017
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### Fuzz Monitor
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```
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american fuzzy lop 2.57b (bmpcomp)
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┌─ process timing ─────────────────────────────────────┬─ overall results ─────┐
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│ run time : 0 days, 0 hrs, 2 min, 48 sec │ cycles done : 0 │
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│ last new path : 0 days, 0 hrs, 1 min, 44 sec │ total paths : 9 │
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│ last uniq crash : 0 days, 0 hrs, 2 min, 21 sec │ uniq crashes : 1 │
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│ last uniq hang : 0 days, 0 hrs, 1 min, 4 sec │ uniq hangs : 2 │
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├─ cycle progress ────────────────────┬─ map coverage ─┴───────────────────────┤
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│ now processing : 1 (11.11%) │ map density : 0.04% / 0.04% │
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│ paths timed out : 0 (0.00%) │ count coverage : 1.69 bits/tuple │
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├─ stage progress ────────────────────┼─ findings in depth ────────────────────┤
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│ now trying : arith 8/8 │ favored paths : 2 (22.22%) │
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│ stage execs : 810/1750 (46.29%) │ new edges on : 2 (22.22%) │
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│ total execs : 1615 │ total crashes : 50 (1 unique) │
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│ exec speed : 30.33/sec (slow!) │ total tmouts : 286 (4 unique) │
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├─ fuzzing strategy yields ───────────┴───────────────┬─ path geometry ────────┤
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│ bit flips : 1/224, 1/223, 0/221 │ levels : 4 │
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│ byte flips : 0/28, 0/27, 0/25 │ pending : 9 │
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│ arithmetics : 0/0, 0/0, 0/0 │ pend fav : 2 │
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│ known ints : 0/0, 0/0, 0/0 │ own finds : 1 │
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│ dictionary : 0/0, 0/0, 0/0 │ imported : n/a │
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│ havoc : 0/0, 0/0 │ stability : 100.00% │
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│ trim : 12.50%/7, 0.00% ├────────────────────────┘
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│─────────────────────────────────────────────────────┘ [cpu000: 31%]
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```
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### Run Crash Result
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```
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jf@jf-VirtualBox:~/510558017/510558017/lab6/fuzz$ ../src/bmpcomp out/crashes/id\:000000\,sig\:06\,src\:000001\,op\:flip1\,pos\:20
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size of Header 54
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AddressSanitizer:DEADLYSIGNAL
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=================================================================
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==7016==ERROR: AddressSanitizer: stack-overflow on address 0x7fff3943dbc8 (pc 0x560eae84105d bp 0x7fff39c3c020 sp 0x7fff3943cbd0 T0)
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#0 0x560eae84105c in main /home/jf/510558017/510558017/lab6/src/hw0302.c:46
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#1 0x7fa09622b082 in __libc_start_main ../csu/libc-start.c:308
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#2 0x560eae841b8d in _start (/home/jf/510558017/510558017/lab6/src/bmpcomp+0x2b8d)
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SUMMARY: AddressSanitizer: stack-overflow /home/jf/510558017/510558017/lab6/src/hw0302.c:46 in main
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==7016==ABORTING
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```

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