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Subject: [libssh2] #247: crash in libssh2 while downloading file using multi thread

[libssh2] #247: crash in libssh2 while downloading file using multi thread

From: libssh2 Trac <trac_at_libssh2.stuge.se>
Date: Fri, 24 Aug 2012 04:11:23 -0000

#247: crash in libssh2 while downloading file using multi thread
-----------------------------------+--------------------
 Reporter: hgxxx007 | Owner:
     Type: defect | Status: new
 Priority: normal | Milestone:
Component: SFTP | Version: 1.4.1
 Keywords: crash libssh2 libcurl | Blocked By:
   Blocks: |
-----------------------------------+--------------------
 # cat /etc/SuSE-release
 SUSE Linux Enterprise Server 11 (x86_64)
 VERSION = 11
 PATCHLEVEL = 1

 # uname -a
 Linux ATAE_R3_250 2.6.32.12-0.7-default #1 SMP 2010-05-20 11:14:20 +0200
 x86_64 x86_64 x86_64 GNU/Linux
 # uname -a
 Linux linux49 2.6.32.45-0.3.2.3813.0.PTF-default #1 SMP 2011-08-22
 10:12:58 +0200 x86_64 x86_64 x86_64 GNU/Linux

 (gdb) bt
 #0 0x00007ffff6f95cef in memcpy () from /lib64/libc.so.6
 #1 0x00007ffff7567ef1 in SHA1_Update () from
 /usr/lib64/libcrypto.so.0.9.8
 #2 0x00007ffff759c086 in ?? () from /usr/lib64/libcrypto.so.0.9.8
 #3 0x00007ffff72957e0 in _libssh2_transport_send (session=0x1196bd0,
 data=0x1097e1c "^", data_len=38, data2=0x7fffdc007904 "", data2_len=29) at
 transport.c:800
 #4 0x00007ffff727b188 in _libssh2_channel_write (channel=0x1097bb0,
 stream_id=0, buf=0x7fffdc007904 "", buflen=29) at channel.c:2055
 #5 0x00007ffff728cec2 in sftp_read (handle=0x7fffd8001da0,
     buffer=0x1173ec0 "\223?235?R*?W\001?225cSHb邢
 %\215A).QXB:?{(\201[.\225Q肯?\221?>.\203\017\003晤..?220饽?#?\005t\237n聿
 M.桠T?fb\234\002\037?\212@!?030^\211\n\\o??230?027?U.x\211r\213zP&L\030M主
 \021\060?214?L\204\215+GB!?\022#\226\033琢4C玎&\bE?, buffer_size=16384)
 at sftp.c:1221
 #6 0x00007ffff728d2ec in libssh2_sftp_read (hnd=0x7fffd8001da0,
     buffer=0x1173ec0 "\223?235?R*?W\001?225cSHb邢
 %\215A).QXB:?{(\201[.\225Q肯?\221?>.\203\017\003晤..?220饽?#?\005t\237n聿
 M.桠T?fb\234\002\037?\212@!?030^\211\n\\o??230?027?U.x\211r\213zP&L\030M主
 \021\060?214?L\204\215+GB!?\022#\226\033琢4C玎&\bE?, buffer_maxlen=16384)
 at sftp.c:1374
 #7 0x00007ffff78658db in sftp_recv () from ./libcurl.so.4
 #8 0x00007ffff78397b1 in Curl_read () from ./libcurl.so.4
 #9 0x00007ffff78518d6 in Curl_readwrite () from ./libcurl.so.4
 #10 0x00007ffff7852a08 in Curl_do_perform () from ./libcurl.so.4
 #11 0x000000000040dfe6 in merge_download_all_ts (m3u8_info=0x10db160) at
 merge_download.c:2465
 #12 0x000000000040e829 in merge_download_thread (param=0x623820) at
 merge_download.c:2590
 #13 0x00007ffff6cfe5f0 in start_thread () from /lib64/libpthread.so.0
 #14 0x00007ffff6fe884d in clone () from /lib64/libc.so.6
 #15 0x0000000000000000 in ?? ()
 (gdb)

 ./curl --version
 curl 7.24.0 (x86_64-unknown-linux-gnu) libcurl/7.24.0 OpenSSL/0.9.8h
 zlib/1.2.3 libssh2/1.4.0
 Protocols: dict file ftp ftps gopher http https imap imaps pop3 pop3s rtsp
 scp sftp smtp smtps telnet tftp
 Features: IPv6 Largefile NTLM NTLM_WB SSL libz

 # ldd libcurl.so
         linux-vdso.so.1 => (0x00007fff989ff000)
         libssh2.so.1 => ./libssh2.so.1 (0x00007f087bd2c000)
         librt.so.1 => /lib64/librt.so.1 (0x00007f087baed000)
         libssl.so.0.9.8 => /usr/lib64/libssl.so.0.9.8 (0x00007f087b899000)
         libcrypto.so.0.9.8 => /usr/lib64/libcrypto.so.0.9.8
 (0x00007f087b51e000)
         libdl.so.2 => /lib64/libdl.so.2 (0x00007f087b319000)
         libz.so.1 => /lib64/libz.so.1 (0x00007f087b103000)
         libc.so.6 => /lib64/libc.so.6 (0x00007f087ada5000)
         libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f087ab87000)
         /lib64/ld-linux-x86-64.so.2 (0x00007f087c1b6000)
 # ldd libssh2.so.1
         linux-vdso.so.1 => (0x00007fffda1ff000)
         libssl.so.0.9.8 => /usr/lib64/libssl.so.0.9.8 (0x00007f2b64fcd000)
         libcrypto.so.0.9.8 => /usr/lib64/libcrypto.so.0.9.8
 (0x00007f2b64c51000)
         libz.so.1 => /lib64/libz.so.1 (0x00007f2b64a3b000)
         libc.so.6 => /lib64/libc.so.6 (0x00007f2b646dd000)
         libdl.so.2 => /lib64/libdl.so.2 (0x00007f2b644d8000)
         /lib64/ld-linux-x86-64.so.2 (0x00007f2b6547e000)

-- 
Ticket URL: <https://trac.libssh2.org/ticket/247>
libssh2 <https://trac.libssh2.org/>
C library for writing portable SSH2 clients
_______________________________________________
libssh2-devel http://cool.haxx.se/cgi-bin/mailman/listinfo/libssh2-devel
Received on 2012-08-24

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