It's possible the stacktrace in the Error Tracker contains sensitive information, that's why access to it is restricted and it's not automatically added to the bug report here.
Here's the Stacktrace though: #0 0x00007f38ce77e428 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:54 resultvar = 0 pid = 6528 selftid = 6528 #1 0x00007f38ce78002a in __GI_abort () at abort.c:89 save_stage = 2 act = {__sigaction_handler = {sa_handler = 0x2020202020383939, sa_sigaction = 0x2020202020383939}, sa_mask = {__val = {2314885530818453536, 2314885530818453536, 7091318039310988591, 3257288213055174703, 7955377262162766188, 3420042391722602357, 8029123697353646951, 7017503717531088228, 4049692876519860323, 3472328519700276835, 3559641648514610989, 8606977229197436472, 3472328296226648109, 3475143045726351408, 3703708260188037168, 3472387704235647800}}, sa_flags = 1714892080, sa_restorer = 0x4f} sigs = {__val = {32, 0 <repeats 15 times>}} #2 0x00007f38ce7c07ea in __libc_message (do_abort=do_abort@entry=2, fmt=fmt@entry=0x7f38ce8d92e0 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/posix/libc_fatal.c:175 ap = <error reading variable ap (Attempt to dereference a generic pointer.)> fd = 4 on_2 = <optimized out> list = <optimized out> nlist = <optimized out> cp = <optimized out> written = <optimized out> #3 0x00007f38ce7c8e0a in malloc_printerr (ar_ptr=<optimized out>, ptr=<optimized out>, str=0x7f38ce8d9410 "double free or corruption (!prev)", action=3) at malloc.c:5004 buf = "0000000000692690" cp = <optimized out> ar_ptr = <optimized out> str = 0x7f38ce8d9410 "double free or corruption (!prev)" action = 3 #4 _int_free (av=<optimized out>, p=<optimized out>, have_lock=0) at malloc.c:3865 size = <optimized out> fb = <optimized out> nextchunk = <optimized out> nextsize = <optimized out> nextinuse = <optimized out> prevsize = <optimized out> bck = <optimized out> fwd = <optimized out> errstr = <optimized out> locked = <optimized out> #5 0x00007f38ce7cc98c in __GI___libc_free (mem=mem@entry=0x692690) at malloc.c:2966 ar_ptr = <optimized out> p = 0x692680 hook = <optimized out> #6 0x0000000000408b56 in do_lockfile (filename=filename@entry=0x7ffee0fb074d "**removed**/COMMIT_EDITMSG") at ../../src/files.c:374 readtot = <optimized out> promptstr = 0x692690 "File **removed**/COMMIT_EDITMSG is being edited (by **removed** with nano 2.5.3, PID 12547); continue?" readamt = <optimized out> lockbuf = <optimized out> ans = 1 namecopy1 = <optimized out> namecopy2 = <optimized out> locknamesize = <optimized out> lockfilename = 0x6999c0 "**removed**/.COMMIT_EDITMSG.swp" lockprog = "nano 2.5.3" lockuser = "khazizovroman\000\000\000" fileinfo = {st_dev = 2050, st_ino = 3733172, st_nlink = 1, st_mode = 33204, st_uid = 1000, st_gid = 1000, __pad0 = 0, st_rdev = 0, st_size = 1024, st_blksize = 4096, st_blocks = 8, st_atim = {tv_sec = 1472024225, tv_nsec = 596574479}, st_mtim = {tv_sec = 1468485463, tv_nsec = 186453909}, st_ctim = {tv_sec = 1468485463, tv_nsec = 186453909}, __glibc_reserved = {0, 0, 0}} lockpid = 12547 retval = -1 #7 0x000000000040ccf1 in open_buffer (filename=0x7ffee0fb074d "**removed**/COMMIT_EDITMSG", undoable=undoable@entry=false) at ../../src/files.c:457 lockstatus = <optimized out> quiet = false new_buffer = true f = 0x3b rc = <optimized out> #8 0x000000000040431c in main (argc=2, argv=0x7ffee0fae2f8) at ../../src/nano.c:2599 optchr = <optimized out> startline = 0 startcol = 0 fill_used = <optimized out> forced_wrapping = <optimized out> old_multibuffer = false long_options = {{name = 0x428236 "boldtext", has_arg = 0, flag = 0x0, val = 68}, {name = 0x42826d "multibuffer", has_arg = 0, flag = 0x0, val = 70}, {name = 0x4282c8 "ignorercfiles", has_arg = 0, flag = 0x0, val = 73}, {name = 0x4282d8 "rebindkeypad", has_arg = 0, flag = 0x0, val = 75}, {name = 0x4282e7 "nonewlines", has_arg = 0, flag = 0x0, val = 76}, {name = 0x42831e "morespace", has_arg = 0, flag = 0x0, val = 79}, {name = 0x42875d "quotestr", has_arg = 1, flag = 0x0, val = 81}, {name = 0x428371 "restricted", has_arg = 0, flag = 0x0, val = 82}, {name = 0x428766 "tabsize", has_arg = 1, flag = 0x0, val = 84}, {name = 0x4283cd "version", has_arg = 0, flag = 0x0, val = 86}, {name = 0x4298ca "syntax", has_arg = 1, flag = 0x0, val = 89}, {name = 0x4283fc "constantshow", has_arg = 0, flag = 0x0, val = 99}, {name = 0x42840e "rebinddelete", has_arg = 0, flag = 0x0, val = 100}, {name = 0x42843d "help", has_arg = 0, flag = 0x0, val = 104}, {name = 0x428474 "mouse", has_arg = 0, flag = 0x0, val = 109}, {name = 0x428487 "noread", has_arg = 0, flag = 0x0, val = 110}, {name = 0x42876e "operatingdir", has_arg = 1, flag = 0x0, val = 111}, {name = 0x4284c9 "preserve", has_arg = 0, flag = 0x0, val = 112}, {name = 0x4284d7 "quiet", has_arg = 0, flag = 0x0, val = 113}, {name = 0x42877b "fill", has_arg = 1, flag = 0x0, val = 114}, {name = 0x428526 "speller", has_arg = 1, flag = 0x0, val = 115}, {name = 0x428530 "tempfile", has_arg = 0, flag = 0x0, val = 116}, {name = 0x42855e "view", has_arg = 0, flag = 0x0, val = 118}, {name = 0x428583 "nowrap", has_arg = 0, flag = 0x0, val = 119}, {name = 0x4285ad "nohelp", has_arg = 0, flag = 0x0, val = 120}, {name = 0x4285cb "suspend", has_arg = 0, flag = 0x0, val = 122}, {name = 0x428206 "smarthome", has_arg = 0, flag = 0x0, val = 65}, {name = 0x428212 "backup", has_arg = 0, flag = 0x0, val = 66}, {name = 0x428780 "backupdir", has_arg = 1, flag = 0x0, val = 67}, {name = 0x42825e "tabstospaces", has_arg = 0, flag = 0x0, val = 69}, {nam e = 0x428296 "locking", has_arg = 0, flag = 0x0, val = 71}, {name = 0x4282a0 "historylog", has_arg = 0, flag = 0x0, val = 72}, {name = 0x4282f4 "noconvert", has_arg = 0, flag = 0x0, val = 78}, {name = 0x42878a "poslog", has_arg = 0, flag = 0x0, val = 80}, {name = 0x42832a "positionlog", has_arg = 0, flag = 0x0, val = 80}, {name = 0x42837e "smooth", has_arg = 0, flag = 0x0, val = 83}, {name = 0x4283c0 "quickblank", has_arg = 0, flag = 0x0, val = 85}, {name = 0x4283d7 "wordbounds", has_arg = 0, flag = 0x0, val = 87}, {name = 0x428447 "autoindent", has_arg = 0, flag = 0x0, val = 105}, {name = 0x42a482 "cut", has_arg = 0, flag = 0x0, val = 107}, {name = 0x42853e "unix", has_arg = 0, flag = 0x0, val = 117}, {name = 0x4285f2 "softwrap", has_arg = 0, flag = 0x0, val = 36}, {name = 0x0, has_arg = 0, flag = 0x0, val = 0}} keyvalue = <optimized out> -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to nano in Ubuntu. https://bugs.launchpad.net/bugs/1572807 Title: /bin/nano:*** Error in `nano': double free or corruption (!prev): ADDR *** Status in nano package in Ubuntu: Confirmed Bug description: The Ubuntu Error Tracker has been receiving reports about a problem regarding nano. This problem was most recently seen with version 2.5.3-2, the problem page at https://errors.ubuntu.com/problem/7dd7f74a72fca06513544d8af66b623efa15b26c contains more details. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nano/+bug/1572807/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp