[libav-bugs] [Bug 1117] New: a divide-by-zero bug in avconv

bugzilla at libav.org bugzilla at libav.org
Fri Feb 23 04:55:44 CET 2018


https://bugzilla.libav.org/show_bug.cgi?id=1117

            Bug ID: 1117
           Summary: a divide-by-zero bug in avconv
           Product: Libav
           Version: git HEAD
          Hardware: Other
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: ---
         Component: general
          Assignee: bugzilla at libav.org
          Reporter: xiaoqixue_1 at 163.com

A divide-by-zero bug in avconv

Affected Version: the latest commit 8ca39b855a7b0e4d9f726fa9d285bc8edcb953e6
from git://git.libav.org/libav.git.

gdb --args  ../avconv -i 1-avconv-divbyzero.wav -i 1-libav-divbyzero.flac -f
avi merge.avi


Program received signal SIGFPE, Arithmetic exception.
0x000000000046b38b in process_input_packet (ist=0x6cdd60,
no_eof=no_eof at entry=0, pkt=0x0)
    at avtools/avconv.c:1586
1586                ist->next_dts += ((int64_t)AV_TIME_BASE *
ist->dec_ctx->frame_size) /
1587                                 ist->dec_ctx->sample_rate;


poc refer:
https://github.com/xiaoqx/pocs/tree/master/libav

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