Ich habe mich mit gdb an einen Frozen Mutt-Prozess gebunden. Folgendes habe ich gefunden:
(gdb) bt
#0 0x00007f8327de76b0 in __read_nocancel () at ../sysdeps/unix/syscall-template.S:81
#1 0x00007f832899014b in ?? () from /lib/x86_64-linux-gnu/libcrypto.so.1.0.0
#2 0x00007f832898e16b in BIO_read () from /lib/x86_64-linux-gnu/libcrypto.so.1.0.0
#3 0x00007f8328cadb54 in ?? () from /lib/x86_64-linux-gnu/libssl.so.1.0.0
#4 0x00007f8328caed55 in ?? () from /lib/x86_64-linux-gnu/libssl.so.1.0.0
#5 0x00007f8328cac174 in ?? () from /lib/x86_64-linux-gnu/libssl.so.1.0.0
#6 0x0000000000484365 in ssl_socket_read (conn=<optimized out>, buf=<optimized out>, len=<optimized out>) at mutt_ssl.c:304
#7 0x0000000000485bb7 in mutt_sasl_conn_read (conn=0xa1d660,
buf=0xa1d7f0 "+ idling\r\nDLE terminated (Success)\r\n38441 INTERNALDATE \"15-Oct-2017 12:27:13 +0000\" FLAGS () BODY[HEADER.FIELDS (DATE FROM SUBJECT TO CC MESSAGE-ID REFERENCES CONTENT-TYPE CONTENT-DESCRIPTION IN-REPLY"..., len=1024) at mutt_sasl.c:555
#8 0x00000000004836b9 in mutt_socket_readchar (conn=conn@entry=0xa1d660, c=c@entry=0x7ffc9ee890cf "") at mutt_socket.c:172
#9 0x00000000004837d2 in mutt_socket_readln_d (buf=0xa266a0 "+ idling", buflen=512, conn=0xa1d660, dbg=dbg@entry=2) at mutt_socket.c:202
#10 0x0000000000490328 in imap_cmd_step (idata=idata@entry=0x9fe990) at command.c:112
#11 0x0000000000491188 in imap_exec (idata=0x9fe990, cmdstr=cmdstr@entry=0x0, flags=flags@entry=1) at command.c:244
#12 0x00000000004912fc in cmd_queue (cmdstr=0x4b3de5 "IDLE", idata=0x9fe990) at command.c:377
#13 cmd_start (idata=0x9fe990, cmdstr=0x4b3de5 "IDLE", flags=0) at command.c:402
#14 0x0000000000491370 in imap_cmd_start (cmdstr=0x4b3de5 "IDLE", idata=idata@entry=0x9fe990) at command.c:76
#15 imap_cmd_idle (idata=idata@entry=0x9fe990) at command.c:313
#16 0x0000000000493328 in imap_check_mailbox (ctx=ctx@entry=0xa37ba0, index_hint=index_hint@entry=0x7ffc9ee89214, force=force@entry=0) at imap.c:1401
#17 0x0000000000442d2a in mx_check_mailbox (ctx=0xa37ba0, index_hint=index_hint@entry=0x7ffc9ee89214, lock=<optimized out>, lock@entry=0) at mx.c:1336
#18 0x000000000041e1b8 in mutt_index_menu () at curs_main.c:555
#19 0x000000000040833c in main (argc=1, argv=<optimized out>) at main.c:1061
Es wartete unendlich lange auf einen blockierenden Lesevorgang. Um dies zu beheben, sollte entweder mit einer Zeitüberschreitung gelesen oder der Anruf abgebrochen werden, damit er bei Empfang eines Signals wie SIGINT unterbrochen wird.