Running on a 32-bit ARM platform generates a segmentation fault because of a log

[terrencetang2023]

Note: Please read FAQ before file an issue, see #2716

Description

Running on a 32-bit ARM platform generates a segmentation fault because of a log

1. SRS Version: v6.0-d0

2. SRS Log:

# gdb ./objs/srs
warning: Found custom handler for signal 4 (Illegal instruction) preinstalled.
warning: Found custom handler for signal 36 (RT36) preinstalled.
warning: Found custom handler for signal 37 (RT37) preinstalled.
warning: Found custom handler for signal 44 (RT44) preinstalled.
Some signal dispositions inherited from the environment (SIG_DFL/SIG_IGN)
won't be propagated to spawned programs.
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Reading symbols from ./objs/srs...
(gdb)
(gdb) r -c conf/srs.conf
Starting program: /data/lycium_back/main/srs/srs-server-6.0-d0-armeabi-v7a-build/trunk/objs/srs -c conf/srs.conf
[2017-08-07 22:52:40.816][INFO][2426][052fh262] XCORE-SRS/6.0.59(Bee)
[2017-08-07 22:52:40.816][INFO][2426][052fh262] config parse complete
[2017-08-07 22:52:40.816][INFO][2426][052fh262] write log to console
[2017-08-07 22:52:40.816][INFO][2426][052fh262] SRS/6.0.59(Bee), MIT
[2017-08-07 22:52:40.816][INFO][2426][052fh262] authors: Winlin<winlin@vip.126.com> ZhaoWenjie<zhaowenjie@tal.com> ShiWei<shiwei05@kuaishou.com> XiaoZhihong<hondaxiao@tencent.com> WuPengqiang<pengqiang.wpq@alibaba-inc.com> XiaLixin<xialixin@kanzhun.com> LiPeng<mozhan.lp@alibaba-inc.com> ChenGuanghua<jinxue.cgh@alibaba-inc.com> ChenHaibo<nmgchenhaibo@foxmail.com> ZhangJunqin<chundonglinlin@126.com> and https://github.com/ossrs/srs/blob/develop/trunk/AUTHORS.md#contributors
[2017-08-07 22:52:40.817][INFO][2426][052fh262] cwd=/data/lycium_back/main/srs/srs-server-6.0-d0-armeabi-v7a-build/trunk, work_dir=./, build: 2023-07-26 16:33:27, configure: --prefix=/home/tangshaoteng/codes/gitee_priv/lycium_back/usr/srs/armeabi-v7a --cross-build --cc=/data/local/ohos-sdk/linux/native/llvm/bin/arm-linux-ohos-clang --cxx=/data/local/ohos-sdk/linux/native/llvm/bin/arm-linux-ohos-clang++ --ar=/data/local/ohos-sdk/linux/native/llvm/bin/llvm-ar --ld=/data/local/ohos-sdk/linux/native/llvm/bin/ld.lld --randlib=/data/local/ohos-sdk/linux/native/llvm/bin/llvm-ranlib --backtrace=off, uname: Linux issuser-ThinkCentre-M920t-N000 5.15.0-76-generic #83~20.04.1-Ubuntu SMP Wed Jun 21 20:23:31 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux, osx: 0, env: 0, pkg:
[2017-08-07 22:52:40.817][INFO][2426][052fh262] configure detail: --prefix=/home/tangshaoteng/codes/gitee_priv/lycium_back/usr/srs/armeabi-v7a --config=conf/srs.conf --osx=off --hls=on --hds=off --dvr=on --ssl=on --https=on --ssl-1-0=off --ssl-local=off --sys-ssl=off --transcode=on --ingest=on --stat=on --http-callback=on --http-server=on --stream-converter=on --http-api=on --utest=off --srt=on --rtc=on --h265=off --gb28181=off --simulator=off --cxx11=on --cxx14=off --backtrace=off --ffmpeg-fit=on --ffmpeg-opus=on --nasm=on --srtp-nasm=on --clean=on --gperf=off --gmc=off --gmd=off --gmp=off --gcp=off --gprof=off --static=off --shared-st=off --shared-srt=off --shared-ffmpeg=off --log-verbose=off --log-info=off --log-trace=on --log-level_v2=on --gcov=off --apm=off --debug=off --debug-stats=off --cross-build=on --sanitizer=off --sanitizer-static=off --sanitizer-log=off --cygwin64=off --single-thread=off --generic-linux=off --arch=arm --host=/data/local/ohos-sdk/linux/native/llvm/bin/arm-linux-ohos-clang --cross-prefix=/data/local/ohos-sdk/linux/native/llvm/bin/arm-linux-ohos-clang- --cc=/data/local/ohos-sdk/linux/native/llvm/bin/arm-linux-ohos-clang --cxx=/data/local/ohos-sdk/linux/native/llvm/bin/arm-linux-ohos-clang++ --ar=/data/local/ohos-sdk/linux/native/llvm/bin/llvm-ar --ld=/data/local/ohos-sdk/linux/native/llvm/bin/ld.lld --randlib=/data/local/ohos-sdk/linux/native/llvm/bin/llvm-ranlib
[2017-08-07 22:52:40.817][INFO][2426][052fh262] srs checking config...
[2017-08-07 22:52:40.831][INFO][2426][052fh262] ips, iface[0] lo ipv4 0x10049 127.0.0.1
[2017-08-07 22:52:40.831][INFO][2426][052fh262] devices, intranet lo 127.0.0.1
[2017-08-07 22:52:40.831][WARN][2426][052fh262][2] stats network use index=0, ip=127.0.0.1, ifname=lo
[2017-08-07 22:52:40.831][WARN][2426][052fh262][2] stats disk not configed, disk iops disabled.
[2017-08-07 22:52:40.831][INFO][2426][052fh262] write log to console
[2017-08-07 22:52:40.831][INFO][2426][052fh262] features, rch:on, dash:on, hls:on, hds:off, srt:on, hc:on, ha:on, hs:on, hp:on, dvr:on, trans:on, inge:on, stat:on, sc:on
[2017-08-07 22:52:40.832][INFO][2426][052fh262] SRS on arm(crossbuild), conf:conf/srs.conf, limit:1000, writev:1024, encoding:little-endian, HZ:100
[2017-08-07 22:52:40.832][INFO][2426][052fh262] mw sleep:350ms. mr enabled:on, default:0, sleep:350ms
[2017-08-07 22:52:40.832][INFO][2426][052fh262] gc:on, pq:30000ms, cscc:[0,16), csa:on, tn:on(may hurts performance), ss:auto(guess by merged write)
[2017-08-07 22:52:40.832][INFO][2426][052fh262] system default latency(ms): mw(0-350) + mr(0-350) + play-queue(0-30000)
[2017-08-07 22:52:40.832][WARN][2426][052fh262][2] SRS/6.0.59 is not stable
[2017-08-07 22:52:40.832][INFO][2426][052fh262] write pid=2426 to ./objs/srs.pid success!
[2017-08-07 22:52:40.832][INFO][2426][052fh262] Thread #1(primordial): init name=srs-master-1, interval=5000ms
[New LWP 2428]
[2017-08-07 22:52:40.833][INFO][2426][052fh262] Pool: Start threads primordial=1, hybrids=1 ok
[2017-08-07 22:52:40.833][INFO][2426][07lq9045] Thread #2: run with tid=2428, entry=0xf7eb1a90, label=hybrid, name=srs-hybrid-2
[2017-08-07 22:52:40.855][INFO][2426][07lq9045] fingerprint=FD:92:C8:4F:FC:EA:04:D8:FF:8B:EA:DD:12:8C:E0:8C:BD:EB:59:A3:1E:A8:4A:70:A7:17:27:20:9B:15:63:9A
[2017-08-07 22:52:40.855][INFO][2426][07lq9045] CircuitBreaker: enabled=1, high=2x90, critical=1x95, dying=5x99
[2017-08-07 22:52:40.855][INFO][2426][07lq9045] http flv live stream, vhost=__defaultVhost__, mount=[vhost]/[app]/[stream].flv
[2017-08-07 22:52:40.855][INFO][2426][07lq9045] http: root mount to ./objs/nginx/html
[2017-08-07 22:52:40.855][INFO][2426][07lq9045] server main cid=07lq9045, pid=2426, ppid=2401, asprocess=0
[2017-08-07 22:52:40.873][INFO][2426][07lq9045] RTMP listen at tcp://0.0.0.0:1935, fd=11
[2017-08-07 22:52:40.873][INFO][2426][07lq9045] HTTP-API listen at tcp://0.0.0.0:1985, fd=15
[2017-08-07 22:52:40.874][INFO][2426][07lq9045] HTTP-Server listen at tcp://0.0.0.0:8080, fd=16
[2017-08-07 22:52:40.874][INFO][2426][07lq9045] signal installed, reload=1, reopen=10, fast_quit=15, grace_quit=3
[2017-08-07 22:52:40.875][INFO][2426][07lq9045] http: api mount /console to ./objs/nginx/html/console
[2017-08-07 22:52:40.876][INFO][2426][07lq9045] rtc listen at udp://0.0.0.0:8000, fd=17
[2017-08-07 22:52:40.877][INFO][2426][9bbg1059] Hybrid cpu=0.00%,18MB
[2017-08-07 22:52:40.877][WARN][2426][n69kg36c][2] use first address as ip: 127.0.0.1, ifname=lo
[2017-08-07 22:52:40.877][INFO][2426][n69kg36c] Startup query id=vid-1anvu81, session=vid-7399d84, eip=127.0.0.1, wait=300s
[2017-08-07 22:52:40.877][INFO][2426][8899ppn0] TCP: connection manager run, conns=0
[2017-08-07 22:52:40.879][INFO][2426][u95c8s4y] SRT: connection manager run, conns=0
[2017-08-07 22:52:40.879][INFO][2426][59oz6242] UDP #17 LISTEN at 0.0.0.0:8000, SO_SNDBUF(default=212992, expect=10485760, actual=524288, r0=0), SO_RCVBUF(default=212992, expect=10485760, actual=524288, r0=0)
[2017-08-07 22:52:40.879][INFO][2426][53hz1095] RTC: connection manager run, conns=0
[2017-08-07 22:52:45.834][INFO][2426][] Hybrid cpu=3.00%,18MB
[2017-08-07 22:52:45.839][INFO][2426][] Process: cpu=3.00%,18MB, threads=2
[2017-08-07 22:52:48.540][INFO][2426][0bf36422] RTMP client ip=192.168.3.5:43952, fd=19
[2017-08-07 22:52:48.556][INFO][2426][] complex handshake success
[2017-08-07 22:52:48.599][INFO][2426][] connect app, tcUrl=rtmp://192.168.3.5:1935/live, pageUrl=, swfUrl=, schema=rtmp, vhost=192.168.3.5, port=1935, app=live, args=null
[2017-08-07 22:52:48.600][INFO][2426][] protocol in.buffer=0, in.ack=0, out.ack=0, in.chunk=128, out.chunk=128
[2017-08-07 22:52:48.686][INFO][2426][] client identified, type=fmle-publish, vhost=192.168.3.5, app=live, stream=livestream, param=, duration=0ms
[2017-08-07 22:52:48.686][INFO][2426][] connected stream, tcUrl=rtmp://192.168.3.5:1935/live, pageUrl=, swfUrl=, schema=rtmp, vhost=__defaultVhost__, port=1935, app=live, stream=livestream, param=, args=null
[2017-08-07 22:52:48.687][INFO][2426][] new live source, stream_url=/live/livestream
[2017-08-07 22:52:48.688][INFO][2426][] source url=/live/livestream, ip=192.168.3.5, cache=1/2500, is_edge=0, source_id=/
[2017-08-07 22:52:48.773][INFO][2426][] new rtc source, stream_url=/live/livestream
[2017-08-07 22:52:48.778][INFO][2426][] hls: win=60000ms, frag=10000ms, prefix=, path=./objs/nginx/html, m3u8=[app]/[stream].m3u8, ts=[app]/[stream]-[seq].ts, aof=2.00, floor=0, clean=1, waitk=1, dispose=0ms, dts_directly=1
[2017-08-07 22:52:48.779][INFO][2426][] ignore disabled exec for vhost=__defaultVhost__
[2017-08-07 22:52:48.780][INFO][2426][] http: mount flv stream for sid=/live/livestream, mount=/live/livestream.flv
[2017-08-07 22:52:48.781][INFO][2426][] start publish mr=0/350, p1stpt=20000, pnt=5000, tcp_nodelay=0
[2017-08-07 22:52:48.861][INFO][2426][] got metadata, width=768, height=320, vcodec=7, acodec=10
[2017-08-07 22:52:48.862][INFO][2426][] 46B video sh, codec(7, profile=High, level=3.2, 768x320, 0kbps, 0.0fps, 0.0s)
[2017-08-07 22:52:48.863][INFO][2426][] 4B audio sh, codec(10, profile=LC, 2channels, 0kbps, 44100HZ), flv(16bits, 2channels, 44100HZ)
[2017-08-07 22:52:50.835][INFO][2426][] Hybrid cpu=11.95%,18MB
[2017-08-07 22:52:50.845][INFO][2426][] Process: cpu=9.05%,18MB, threads=2
[2017-08-07 22:52:55.849][INFO][2426][] Hybrid cpu=15.92%,18MB, cid=2,1, timer=61,0,0, clock=1,34,13,1,1,0,1,0,0, objs=(pkt:0,raw:0,fua:0,msg:97,oth:0,buf:0)
[2017-08-07 22:52:55.851][INFO][2426][] Process: cpu=15.92%,18MB, threads=2

Thread 2 "srs-hybrid-2" received signal SIGSEGV, Segmentation fault.
[Switching to LWP 2428]
0xf7fc431e in memchr () from /lib/ld-musl-arm.so.1
(gdb)
(gdb) bt
#0  0xf7fc431e in memchr () from /lib/ld-musl-arm.so.1
#1  0xf7fb3f80 in strnlen () from /lib/ld-musl-arm.so.1
#2  0xf7fab1a4 in printf_core () from /lib/ld-musl-arm.so.1
#3  0xf7faa904 in vfprintf () from /lib/ld-musl-arm.so.1
#4  0xf7fb0160 in vsnprintf () from /lib/ld-musl-arm.so.1
#5  0x006631ac in SrsFileLog::log (this=0xf7e51080, level=SrsLogLevelTrace,
    tag=0x0, context_id=...,
    fmt=0x4c8e3b "-> HLS time=%dms, sno=%d, ts=%s, dur=%dms, dva=%dp",
    args=...) at ./src/app/srs_app_log.cpp:105
#6  0x0052a3f8 in srs_logger_impl (level=SrsLogLevelTrace, tag=0x0,
    context_id=...,
    fmt=0x4c8e3b "-> HLS time=%dms, sno=%d, ts=%s, dur=%dms, dva=%dp")
    at ./src/kernel/srs_kernel_log.cpp:54
#7  0x006542f8 in SrsHls::hls_show_mux_log (this=0xf7c85840)
    at ./src/app/srs_app_hls.cpp:1416
#8  0x00654134 in SrsHls::on_video (this=0xf7c85840, shared_video=0xf6e54a30,
    format=0xf7c85c50) at ./src/app/srs_app_hls.cpp:1400
#9  0x0063b4b4 in SrsOriginHub::on_video (this=0xf7c85800,
    shared_video=0xf6e54a30, is_sequence_header=false)
    at ./src/app/srs_app_source.cpp:1061
#10 0x00642094 in SrsLiveSource::on_video_imp (this=0xf7ed2db0,
    msg=0xf6e54a30) at ./src/app/srs_app_source.cpp:2457
#11 0x00641370 in SrsLiveSource::on_frame (this=0xf7ed2db0, msg=0xf6e54a30)
--Type <RET> for more, q to quit, c to continue without paging--
    at ./src/app/srs_app_source.cpp:2282
#12 0x00641ce8 in SrsLiveSource::on_video (this=0xf7ed2db0,
    shared_video=0xf7c85b80) at ./src/app/srs_app_source.cpp:2416
#13 0x006348b0 in SrsRtmpConn::process_publish_message (this=0xf7e57860,
    source=0xf7ed2db0, msg=0xf7c85b80) at ./src/app/srs_app_rtmp_conn.cpp:1213
#14 0x006346c8 in SrsRtmpConn::handle_publish_message (this=0xf7e57860,
    source=0xf7ed2db0, msg=0xf7c85b80) at ./src/app/srs_app_rtmp_conn.cpp:1185
#15 0x006e7598 in SrsPublishRecvThread::consume (this=0xf6ee0538,
    msg=0xf7c85b80) at ./src/app/srs_app_recv_thread.cpp:373
#16 0x006e672c in SrsRecvThread::do_cycle (this=0xf6ee0548)
    at ./src/app/srs_app_recv_thread.cpp:131
#17 0x006e65bc in SrsRecvThread::cycle (this=0xf6ee0548)
    at ./src/app/srs_app_recv_thread.cpp:100
#18 0x006628f0 in SrsFastCoroutine::cycle (this=0xf708f850)
    at ./src/app/srs_app_st.cpp:285
#19 0x00662784 in SrsFastCoroutine::pfn (arg=0xf708f850)
    at ./src/app/srs_app_st.cpp:300
#20 0x007b3550 in _st_thread_main () at sched.c:380
#21 0x007b2978 in st_thread_create (start=0xf6ee0264, arg=0xf7c86da0,
    joinable=-135982612, stk_size=-152173980) at sched.c:666
#22 0x00000000 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb)

3. SRS Config:

# main config for srs.
# @see full.conf for detail config.

listen              1935;
max_connections     1000;
srs_log_tank        console;
#srs_log_file        ./objs/srs.log;
daemon              off;
http_api {
    enabled         on;
    listen          1985;
}
http_server {
    enabled         on;
    listen          8080;
    dir             ./objs/nginx/html;
}
rtc_server {
    enabled on;
    listen 8000; # UDP port
    # @see https://ossrs.net/lts/zh-cn/docs/v4/doc/webrtc#config-candidate
    candidate $CANDIDATE;
}
vhost __defaultVhost__ {
    hls {
        enabled         on;
    }
    http_remux {
        enabled     on;
        mount       [vhost]/[app]/[stream].flv;
    }
    rtc {
        enabled     on;
        # @see https://ossrs.net/lts/zh-cn/docs/v4/doc/webrtc#rtmp-to-rtc
        rtmp_to_rtc off;
        # @see https://ossrs.net/lts/zh-cn/docs/v4/doc/webrtc#rtc-to-rtmp
        rtc_to_rtmp off;
    }

    play{
        gop_cache_max_frames 2500;
    }
}

Replay

bug at trunk/src/app/srs_app_hls.cpp
srs_trace("-> " SRS_CONSTS_LOG_HLS " time=%dms, sno=%d, ts=%s, dur=%dms, dva=%dp",
pprint->age(), controller->sequence_no(), controller->ts_url().c_str(),
srsu2msi(controller->duration()), controller->deviation());

pprint->age() return value type is srs_utime_t (typedef int64_t), %lld is required instead of %d to output logs.

Step 1: xxxxxx

use gdb for debug:
gdb ./objs/srs
(gdb) r -c conf/srs.conf

Step 2: xxxxxx

ffmpeg -re -i ./doc/source.flv -c copy -f flv rtmp://192.168.3.5/live/livestream

Step 3: xxxxxx

(gdb) bt

Expect

Expect to fix the bug here to support 32-bit ARM platforms

TRANS_BY_GPT3