[Users] [Bug 4016] New: Claws-mail segfault

[noreply at thewildbeast.co.uk]

http://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=4016

            Bug ID: 4016
           Summary: Claws-mail segfault
    Classification: Unclassified
           Product: Claws Mail
           Version: 3.16.0
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: major
          Priority: P3
         Component: Folders/IMAP
          Assignee: users at lists.claws-mail.org
          Reporter: rce-dev at protonmail.com

Claws-mail segfaults under two conditions as described below:
1: claws-mail segfaults while executing or closing "Checkfor new folders"
2: claws-mail segfaults while exiting claws-mail:


claws-mail configuration:

imap localhost:1143 STARTLS (ProtonMail Bridge)
smtp localhost:1025 STARTLS
use non-blocking SSL/TLS

Fedora fc27
lxde-common-0.99.2-3.fc27.noarch
claws-mail version 3.16.0
libetpan   version 1.8

PC: ThinkPad T540p

------
GDB Backtrace when claws-mail segfaults while executing or closing
"Check for new folders"

claws-mail[10696]: segfault at 0 ip 00007fb4cd366814 sp \
00007fb4c0dfba70 error 4 in libetpan.so[7fb4cd333000+c2000]

gdb backtrace:
#0  0x00007fb4cd366814 in clist_foreach (lst=0x0,
func=func at entry=0x7fb4cd380a20 <mailimap_flag_free>, data=data at entry=0x0) at
clist.c:220
#1  0x00007fb4cd380ad5 in mailimap_flag_list_free (flag_list=0x7fb4b8031c90) at
mailimap_types.c:1204
#2  0x00007fb4cd382800 in mailimap_selection_info_free
(sel_info=0x7fb4b8032140) at mailimap_types.c:3109
#3  0x00007fb4cd36b588 in mailimap_select_condstore_optional
(session=0x2814250, mb=0x7fb4b802a810 "Sent", condstore=condstore at entry=0,
p_mod_sequence_value=p_mod_sequence_value at entry=0x7fb4c0dfbb08) at
condstore.c:497
#4  0x00007fb4cd36c310 in mailimap_select (session=<optimized out>,
mb=<optimized out>) at mailimap.c:2094
#5  0x00000000005acbbf in select_run (op=<optimized out>) at imap-thread.c:1341
#6  0x00000000005cf546 in thread_run (data=0x2708fe0) at
etpan-thread-manager.c:340
#7  0x00007fb4ce75b50b in start_thread () at /usr/lib64/libpthread.so.0
#8  0x00007fb4cd07216f in clone () at /usr/lib64/libc.so.6

------
GDB Backtrace when claws-mail segfaults while exiting claws-mail:

claws-mail[23534]: segfault at 0 ip 00007f8b0898d814 sp 00007f8af7ffeaf0 error
4 in libetpan.so.20.1.0[7f8b0895a000+c2000]

bt
#0  0x00007f8b0898d814 in clist_foreach (lst=0x0,
func=func at entry=0x7f8b089a7a20 <mailimap_flag_free>, data=data at entry=0x0) at
clist.c:220
#1  0x00007f8b089a7ad5 in mailimap_flag_list_free (flag_list=0x7f8aec03f530) at
mailimap_types.c:1204
#2  0x00007f8b089a9800 in mailimap_selection_info_free
(sel_info=0x7f8aec03d530) at mailimap_types.c:3109
#3  0x00007f8b0899406e in mailimap_free (session=0x25e4000) at mailimap.c:2694
#4  0x00000000005cf546 in thread_run (data=0x27e1f70) at
etpan-thread-manager.c:340
#5  0x00007f8b09d8250b in start_thread () at /usr/lib64/libpthread.so.0
#6  0x00007f8b0869916f in clone () at /usr/lib64/libc.so.6

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