Details
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Bug
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Resolution: Fixed
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Major
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5.5.2, 6.0.0
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Triaged
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Unknown
Description
As identified by AddressSanitizer when running `make simple-test` with Asan enabled:
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==18888==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x625000002314 at pc 0x00000040312d bp 0x7ffd332ff300 sp 0x7ffd332ff2f8
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READ of size 4 at 0x625000002314 thread T0
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#0 0x40312c in find_interesting_procs /home/couchbase/jenkins/workspace/kv-engine-master-post-commit-DJR/sub_workspace/sigar/programs/sigar_port.c:187
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#1 0x40312c in main /home/couchbase/jenkins/workspace/kv-engine-master-post-commit-DJR/sub_workspace/sigar/programs/sigar_port.c:310
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#2 0x7f7685e2e82f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
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#3 0x4033c8 in _start (/home/couchbase/jenkins/workspace/kv-engine-master-post-commit-DJR/sub_workspace/install/bin/sigar_port+0x4033c8)
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0x625000002314 is located 4 bytes to the right of 8720-byte region [0x625000000100,0x625000002310)
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allocated by thread T0 here:
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#0 0x7f7687452290 in __interceptor_malloc (/home/couchbase/jenkins/workspace/kv-engine-master-post-commit-DJR/sub_workspace/install/bin/../lib/libasan.so.4+0xd9290)
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#1 0x40221f in find_interesting_procs /home/couchbase/jenkins/workspace/kv-engine-master-post-commit-DJR/sub_workspace/sigar/programs/sigar_port.c:126
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#2 0x40221f in main /home/couchbase/jenkins/workspace/kv-engine-master-post-commit-DJR/sub_workspace/sigar/programs/sigar_port.c:310
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#3 0x7f7685e2e82f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
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SUMMARY: AddressSanitizer: heap-buffer-overflow /home/couchbase/jenkins/workspace/kv-engine-master-post-commit-DJR/sub_workspace/sigar/programs/sigar_port.c:187 in find_interesting_procs
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Shadow bytes around the buggy address:
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0x0c4a7fff8410: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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0x0c4a7fff8420: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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0x0c4a7fff8430: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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0x0c4a7fff8440: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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0x0c4a7fff8450: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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=>0x0c4a7fff8460: 00 00[fa]fa fa fa fa fa fa fa fa fa fa fa fa fa
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0x0c4a7fff8470: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
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0x0c4a7fff8480: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
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0x0c4a7fff8490: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
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0x0c4a7fff84a0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
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0x0c4a7fff84b0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
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Shadow byte legend (one shadow byte represents 8 application bytes):
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Addressable: 00
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Partially addressable: 01 02 03 04 05 06 07
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Heap left redzone: fa
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Freed heap region: fd
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Stack left redzone: f1
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Stack mid redzone: f2
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Stack right redzone: f3
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Stack after return: f5
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Stack use after scope: f8
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Global redzone: f9
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Global init order: f6
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Poisoned by user: f7
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Container overflow: fc
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Array cookie: ac
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Intra object redzone: bb
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ASan internal: fe
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Left alloca redzone: ca
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Right alloca redzone: cb
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==18888==ABORTING
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Full logs: http://cv.jenkins.couchbase.com/job/kv-engine-master-post-commit-DJR/label=ubuntu-1604&&master/143/