ORLOV-NB# egdb /usr/local/bin/net GNU gdb (GDB) 7.12.1 Copyright (C) 2017 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html > This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-unknown-openbsd6.6". Type "show configuration" for configuration details. For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /usr/local/bin/net...(*no debugging symbols found* )...done. (gdb) set args ads testjoin (gdb) run Starting program: /usr/local/bin/net ads testjoin *net(20104) in free(): bogus pointer (double free?) 0xffffffffffffffff*
Program received signal SIGABRT, Aborted. thrkill () at -:3 3 -: No such file or directory. (gdb) пт, 4 окт. 2019 г. в 14:31, Stuart Henderson <[email protected]>: > On 2019/10/04 14:25, dmitry.sensei wrote: > > How to debug net with parameters& > > > > пт, 4 окт. 2019 г. в 13:49, Stuart Henderson <[email protected]>: > > > > On 2019/10/04 08:32, Sebastien Marie wrote: > > > On Fri, Oct 04, 2019 at 09:24:12AM +0500, dmitry.sensei wrote: > > > > Bugged net utility from samba package/ > > > > ktrace is attached > > > > > > PLEASE DON'T SEND RAW KTRACE DATA ! (it would be the same for core > file too). > > > > > > in case you don't figure, you send to everyone a trace of all > syscalls with > > > arguments and return of what the program did, including: > > > > > > - file description and content for any opened file (hello > > > /var/samba/private/secrets.tdb and /etc/samba/smb.conf) > > > - all network communication with the program (hello ldap, kerberos > and smb > > > services) > > > > > > It means that any secrets in readed file or sent/received on the > network should > > > be considered compromised. > > > > > > Just don't do that. > > > > > > Thanks. > > > -- > > > Sebastien Marie > > > > > > > Plus, it's not really useful anyway. A backtrace would be the normal > > starting point for a segfault. (In case "gdb" in base doesn't work, > > pkg_add gdb and use "egdb" instead). > > > > egdb `which net` net.core > > bt full > > > > > > > > > > -- > > Dmitry Orlov > > The command I showed is to look at the coredump from your previous crash > which > already happened with parameters. > > If you need to run it "live" in gdb then omit "net.core" from the command > line > and use "set args <whatever>" and "run". > > -- Dmitry Orlov
