GNU gdb (GDB) 7.2-ubuntu Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later 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 "i686-linux-gnu". For bug reporting instructions, please see: ... Reading symbols from /usr/bin/net...Reading symbols from /usr/lib/debug/usr/bin/net.samba3...done. done. (gdb) handle SIG33 pass nostop noprint Signal Stop Print Pass to program Description SIG33 No No Yes Real-time event 33 (gdb) set pagination 0 (gdb) run useraid[K[K[Ksidlist Starting program: /usr/bin/net usersidlist [Thread debugging using libthread_db enabled] Program received signal SIGSEGV, Segmentation fault. __libc_free (mem=0x2) at malloc.c:3709 3709 malloc.c: No such file or directory. in malloc.c (gdb) backtrace full #0 __libc_free (mem=0x2) at malloc.c:3709 ar_ptr = p = 0xfffffffa #1 0xb79a5ffd in free_user_token (c=0xb801d0d8, argc=0, argv=0xb801dc08) at utils/net_rpc.c:4061 No locals. #2 net_usersidlist (c=0xb801d0d8, argc=0, argv=0xb801dc08) at utils/net_rpc.c:4597 num_tokens = 2 tokens = 0xb8081838 i = 1 __FUNCTION__ = "net_usersidlist" #3 0xb79cf435 in net_run_function (c=0xb801d0d8, argc=1, argv=0xb801dc04, whoami=0xb7e9e126 "net", table=0xb8015020) at utils/net_util.c:582 No locals. #4 0xb79947cd in main (argc=2, argv=0xbffff8b4) at utils/net.c:914 opt = i = rc = 8 argc_new = 2 argv_new = 0xfffffffa pc = 0xb801da60 frame = 0xb801d0a0 c = 0xb801d0d8 long_options = {{longName = 0xb7ea2cea "help", shortName = 104 'h', argInfo = 0, arg = 0x0, val = 104, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7e9e366 "workgroup", shortName = 119 'w', argInfo = 1, arg = 0xb801d120, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7ea08de "user", shortName = 85 'U', argInfo = 1, arg = 0xb801d0e4, val = 85, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7e9e03b "ipaddress", shortName = 73 'I', argInfo = 1, arg = 0x0, val = 73, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7f14ad0 "port", shortName = 112 'p', argInfo = 2, arg = 0xb801d100, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7e9e045 "myname", shortName = 110 'n', argInfo = 1, arg = 0xb801d0d8, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7ea5918 "server", shortName = 83 'S', argInfo = 1, arg = 0xb801d0dc, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7eba49b "encrypt", shortName = 101 'e', argInfo = 0, arg = 0x0, val = 101, descrip = 0xb7e9e5a0 "Encrypt SMB transport (UNIX extended servers only)", argDescrip = 0x0}, {longName = 0xb7e9e04c "container", shortName = 99 'c', argInfo = 1, arg = 0xb801d110, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7fabd1e "comment", shortName = 67 'C', argInfo = 1, arg = 0xb801d10c, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7e9e056 "maxusers", shortName = 77 'M', argInfo = 2, arg = 0xb801d108, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7fc7655 "flags", shortName = 70 'F', argInfo = 2, arg = 0xb801d114, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7e9e05f "long", shortName = 108 'l', argInfo = 0, arg = 0xb801d0f0, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7fafe93 "reboot", shortName = 114 'r', argInfo = 0, arg = 0xb801d0f4, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7e9e064 "force", shortName = 102 'f', argInfo = 0, arg = 0xb801d0f8, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7eac9ec "stdin", shortName = 105 'i', argInfo = 0, arg = 0xb801d0fc, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7eba67f "timeout", shortName = 116 't', argInfo = 2, arg = 0xb801d118, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7e9e06a "request-timeout", shortName = 0 '\000', argInfo = 2, arg = 0xb801d11c, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7e9e07a "machine-pass", shortName = 80 'P', argInfo = 0, arg = 0xb801d124, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7e9fb74 "kerberos", shortName = 107 'k', argInfo = 0, arg = 0xb801d154, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7e9e087 "myworkgroup", shortName = 87 'W', argInfo = 1, arg = 0xb801d0ec, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7e9e093 "use-ccache", shortName = 0 '\000', argInfo = 0, arg = 0xb801d15c, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7e9e09e "verbose", shortName = 118 'v', argInfo = 0, arg = 0xb801d104, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7e9e0a6 "test", shortName = 84 'T', argInfo = 0, arg = 0xb801d150, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7f97b82 "local", shortName = 76 'L', argInfo = 0, arg = 0xb801d128, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7e9fc71 "domain", shortName = 68 'D', argInfo = 0, arg = 0xb801d12c, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7e9e0ab "ntname", shortName = 78 'N', argInfo = 1, arg = 0xb801d134, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7f9efed "rid", shortName = 82 'R', argInfo = 2, arg = 0xb801d138, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7eba3db "acls", shortName = 0 '\000', argInfo = 0, arg = 0xb801d13c, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7f27896 "attrs", shortName = 0 '\000', argInfo = 0, arg = 0xb801d140, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7e9e0b2 "timestamps", shortName = 0 '\000', argInfo = 0, arg = 0xb801d144, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7e9e0bd "exclude", shortName = 88 'X', argInfo = 1, arg = 0xb801d148, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7e9e0c5 "destination", shortName = 0 '\000', argInfo = 1, arg = 0xb801d14c, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7e9e0d1 "tallocreport", shortName = 0 '\000', argInfo = 0, arg = 0xb801d130, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7e9e0de "force-full-repl", shortName = 0 '\000', argInfo = 0, arg = 0xb801d158, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7e9e0ee "single-obj-repl", shortName = 0 '\000', argInfo = 0, arg = 0xb801d160, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0xb7e9e0fe "clean-old-entries", shortName = 0 '\000', argInfo = 0, arg = 0xb801d164, val = 0, descrip = 0x0, argDescrip = 0x0}, {longName = 0x0, shortName = 0 '\000', argInfo = 4, arg = 0xb8019640, val = 0, descrip = 0xb7e9e110 "Common samba options:", argDescrip = 0x0}, {longName = 0x0, shortName = 0 '\000', argInfo = 0, arg = 0x0, val = 0, descrip = 0x0, argDescrip = 0x0}} __FUNCTION__ = "main" (gdb) info registers eax 0x0 0 ecx 0xb76ca3c0 -1217616960 edx 0xfffffffa -6 ebx 0xb76c8ff4 -1217622028 esp 0xbffff2b8 0xbffff2b8 ebp 0xbffff2c8 0xbffff2c8 esi 0xb8081950 -1207428784 edi 0xb8081838 -1207429064 eip 0xb75dfe21 0xb75dfe21 <__libc_free+49> eflags 0x10297 [ CF PF AF SF IF RF ] cs 0x73 115 ss 0x7b 123 ds 0x7b 123 es 0x7b 123 fs 0x0 0 gs 0x33 51 (gdb) x/16i $pc => 0xb75dfe21 <__libc_free+49>: mov 0x4(%edx),%eax 0xb75dfe24 <__libc_free+52>: test $0x2,%al 0xb75dfe26 <__libc_free+54>: jne 0xb75dfe80 <__libc_free+144> 0xb75dfe28 <__libc_free+56>: test $0x4,%al 0xb75dfe2a <__libc_free+58>: lea 0x13cc(%ebx),%esi 0xb75dfe30 <__libc_free+64>: je 0xb75dfe3b <__libc_free+75> 0xb75dfe32 <__libc_free+66>: mov %edx,%eax 0xb75dfe34 <__libc_free+68>: and $0xfff00000,%eax 0xb75dfe39 <__libc_free+73>: mov (%eax),%esi 0xb75dfe3b <__libc_free+75>: xor %eax,%eax 0xb75dfe3d <__libc_free+77>: mov $0x1,%ecx 0xb75dfe42 <__libc_free+82>: cmpl $0x0,%gs:0xc 0xb75dfe4a <__libc_free+90>: je 0xb75dfe4d <__libc_free+93> 0xb75dfe4c <__libc_free+92>: lock cmpxchg %ecx,(%esi) 0xb75dfe50 <__libc_free+96>: jne 0xb75e1658 <_L_lock_9687> 0xb75dfe56 <__libc_free+102>: mov %esi,%eax (gdb) thread apply all backtrace Thread 1 (Thread 0xb73c8710 (LWP 939)): #0 __libc_free (mem=0x2) at malloc.c:3709 #1 0xb79a5ffd in free_user_token (c=0xb801d0d8, argc=0, argv=0xb801dc08) at utils/net_rpc.c:4061 #2 net_usersidlist (c=0xb801d0d8, argc=0, argv=0xb801dc08) at utils/net_rpc.c:4597 #3 0xb79cf435 in net_run_function (c=0xb801d0d8, argc=1, argv=0xb801dc04, whoami=0xb7e9e126 "net", table=0xb8015020) at utils/net_util.c:582 #4 0xb79947cd in main (argc=2, argv=0xbffff8b4) at utils/net.c:914 (gdb) quit A debugging session is active. Inferior 1 [process 939] will be killed. Quit anyway? (y or n)