2.2.19 crash

[Toni Mattila]

Hi,

I have one user constantly crashing with:
Core was generated by `dovecot/imap'.
Program terminated with signal 11, Segmentation fault.
#0  0x007e5b7c in mailbox_list_notify_next (notify=0x0, 
rec_r=0xbfee8f00) at mailbox-list-notify.c:28
28              return notify->list->v.notify_next(notify, rec_r);
(gdb) bt
#0  0x007e5b7c in mailbox_list_notify_next (notify=0x0, 
rec_r=0xbfee8f00) at mailbox-list-notify.c:28
#1  0x080641f2 in imap_client_notify_ns (notify_ns=0x8859478) at 
imap-notify.c:248
#2  0x0806476a in imap_client_notify_more (client=<value optimized out>) 
at imap-notify.c:297
#3  0x080648df in imap_client_notify_newmails (client=0x88555c0) at 
imap-notify.c:339
#4  0x080699fe in imap_sync_notify_more (ctx=0x8858d70) at imap-sync.c:356
#5  imap_sync_more (ctx=0x8858d70) at imap-sync.c:526
#6  0x08069db2 in cmd_sync_continue (sync_cmd=0x8856008) at imap-sync.c:658
#7  0x0806a206 in cmd_sync_delayed_real (client=0x88555c0) at 
imap-sync.c:748
#8  cmd_sync_delayed (client=0x88555c0) at imap-sync.c:886
#9  0x007e7c25 in notify_delay_callback (box=0x8864cd0) at 
mailbox-watch.c:26
#10 0x00caec60 in io_loop_handle_timeouts_real (ioloop=0x883d4a0) at 
ioloop.c:527
#11 io_loop_handle_timeouts (ioloop=0x883d4a0) at ioloop.c:540
#12 0x00cb0299 in io_loop_handler_run_internal (ioloop=0x883d4a0) at 
ioloop-epoll.c:193
#13 0x00caea8b in io_loop_handler_run (ioloop=0x883d4a0) at ioloop.c:607
#14 0x00caee08 in io_loop_run (ioloop=0x883d4a0) at ioloop.c:583
#15 0x00c4216d in master_service_run (service=0x883d3d0, 
callback=0x806a700 <client_connected>) at master-service.c:640
#16 0x0806af22 in main (argc=Cannot access memory at address 0x0

(gdb) f 6
#6  0x08069db2 in cmd_sync_continue (sync_cmd=0x8856008) at imap-sync.c:658
658             if ((ret = imap_sync_more(ctx)) == 0)

Best Regards,
Toni Mattila