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[Lynx-dev] lynx: double free or corruption (fasttop)


From: Frédéric L . W . Meunier
Subject: [Lynx-dev] lynx: double free or corruption (fasttop)
Date: Fri, 29 Oct 2010 16:38:32 -0200 (BRST)
User-agent: Alpine 2.00 (LNX 1167 2008-08-23)

Is this supposed to be a bug in lynx or glibc ? I get it randomly while removing a file with 'r'.

How would one track it down ? gdb bt didn't return anything.

*** glibc detected *** lynx: double free or corruption (fasttop): 0x09b2ae38 ***
======= Backtrace: =========
/lib/libc.so.6(+0x70d0f)[0xb7712d0f]
/lib/libc.so.6(+0x73c17)[0xb7715c17]
/lib/libc.so.6(cfree+0x70)[0xb7718dd0]
lynx[0x808d075]
lynx[0x80924ba]
lynx[0x807183b]
lynx[0x807c0ad]
lynx[0x807728f]
/lib/libc.so.6(__libc_start_main+0xe6)[0xb76b8c96]
lynx[0x804b531]
======= Memory map: ========
08048000-08171000 r-xp 00000000 08:07 492277     /usr/local/bin/lynx
08171000-0818b000 rw-p 00129000 08:07 492277     /usr/local/bin/lynx
0818b000-081db000 rw-p 00000000 00:00 0
09b10000-09c3a000 rw-p 00000000 00:00 0          [heap]
467dd000-46821000 r-xp 00000000 08:07 499743     /lib/libncursesw.so.6.0
46821000-46824000 rw-p 00043000 08:07 499743     /lib/libncursesw.so.6.0
4b832000-4b844000 r-xp 00000000 08:07 459091     /usr/lib/libz.so.1.2.5
4b844000-4b845000 rw-p 00012000 08:07 459091     /usr/lib/libz.so.1.2.5
4bb35000-4bb51000 r-xp 00000000 08:07 461037     /usr/lib/libgcc_s.so.1
4bb51000-4bb52000 rw-p 0001b000 08:07 461037     /usr/lib/libgcc_s.so.1
4c3fe000-4c52d000 r-xp 00000000 08:07 501721     /lib/libcrypto.so.0.9.8
4c52d000-4c543000 rw-p 0012e000 08:07 501721     /lib/libcrypto.so.0.9.8
4c543000-4c546000 rw-p 00000000 00:00 0
4c6ea000-4c72e000 r-xp 00000000 08:07 501753     /lib/libssl.so.0.9.8
4c72e000-4c732000 rw-p 00043000 08:07 501753     /lib/libssl.so.0.9.8
4c734000-4c744000 r-xp 00000000 08:07 501752     /lib/libbz2.so.1.0.6
4c744000-4c745000 rw-p 00010000 08:07 501752     /lib/libbz2.so.1.0.6
4c747000-4c777000 r-xp 00000000 08:07 461044     /usr/lib/libidn.so.11.6.2
4c777000-4c778000 rw-p 0002f000 08:07 461044     /usr/lib/libidn.so.11.6.2
b7300000-b7321000 rw-p 00000000 00:00 0
b7321000-b7400000 ---p 00000000 00:00 0
b7476000-b7480000 r-xp 00000000 08:07 469238     /lib/libnss_files-2.12.1.so
b7480000-b7481000 r--p 00009000 08:07 469238     /lib/libnss_files-2.12.1.so
b7481000-b7482000 rw-p 0000a000 08:07 469238     /lib/libnss_files-2.12.1.so
b7482000-b748b000 r-xp 00000000 08:07 469262     /lib/libnss_nis-2.12.1.so
b748b000-b748c000 r--p 00008000 08:07 469262     /lib/libnss_nis-2.12.1.so
b748c000-b748d000 rw-p 00009000 08:07 469262     /lib/libnss_nis-2.12.1.so
b748d000-b74a2000 r-xp 00000000 08:07 469263     /lib/libnsl-2.12.1.so
b74a2000-b74a3000 r--p 00014000 08:07 469263     /lib/libnsl-2.12.1.so
b74a3000-b74a4000 rw-p 00015000 08:07 469263     /lib/libnsl-2.12.1.so
b74a4000-b74a6000 rw-p 00000000 00:00 0
b74a6000-b74ad000 r-xp 00000000 08:07 469261     /lib/libnss_compat-2.12.1.so
b74ad000-b74ae000 r--p 00006000 08:07 469261     /lib/libnss_compat-2.12.1.so
b74ae000-b74af000 rw-p 00007000 08:07 469261     /lib/libnss_compat-2.12.1.so
b74af000-b76a0000 r--p 00000000 08:07 524518     /usr/lib/locale/locale-archive
b76a0000-b76a2000 rw-p 00000000 00:00 0
b76a2000-b7812000 r-xp 00000000 08:07 469310     /lib/libc-2.12.1.so
b7812000-b7814000 r--p 0016f000 08:07 469310     /lib/libc-2.12.1.so
b7814000-b7815000 rw-p 00171000 08:07 469310     /lib/libc-2.12.1.so
b7815000-b7818000 rw-p 00000000 00:00 0
b7818000-b781a000 r-xp 00000000 08:07 469015     /lib/libdl-2.12.1.so
b781a000-b781b000 r--p 00001000 08:07 469015     /lib/libdl-2.12.1.so
b781b000-b781c000 rw-p 00002000 08:07 469015     /lib/libdl-2.12.1.so
b781c000-b781d000 rw-p 00000000 00:00 0
b782d000-b782e000 rw-p 00000000 00:00 0
b782e000-b784c000 r-xp 00000000 08:07 469290     /lib/ld-2.12.1.so
b784c000-b784d000 r-xp 00000000 00:00 0          [vdso]
b784d000-b784e000 r--p 0001e000 08:07 469290     /lib/ld-2.12.1.so
b784e000-b784f000 rw-p 0001f000 08:07 469290     /lib/ld-2.12.1.so
bf93d000-bf95e000 rwxp 00000000 00:00 0          [stack]
Aborted (core dumped)



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