Fabian Keil <freebsd-lis...@fabiankeil.de> wrote: > After the iconv import claws-mail started to deadlock in iconv every > now and then on my system, which prevented claws-mail from rendering > windows or reacting to input. > > So far I haven't been able to reproduce this intentionally and various > rebuilds of ports, kernel and userland (mainly for other reasons) had > no effect. > > When the problem occurs, trying to attach to the process causes > gdb and gdb76 to crash which also crashes claws-mail, but sending > SIGABRT causes a proper core dump that can be analysed with gdb. > > The backtraces always show that there is only one thread running and > it's trying to lock cm_lock in _citrus_mapper_close(), which > apparently is already locked due to a _citrus_mapper_close() > recursion. Examples:
[...] > This patch: > http://www.fabiankeil.de/sourcecode/freebsd/iconv-Let-_citrus_mapper_close-unlock-cm_lock-before-calli.diff > seems to prevent the deadlock, but I'm not 100% sure that it's > correct and I'm also a bit surprised by the lack of reports from > other claws-mail users. > > Did anyone else run into this or can comment on the patch or > the backtraces? In my case Claws Mail was hanging everytime I tried to access one of my bigger IMAP folders (50k+ messages). It was 100% reproducible. The patch seems to solve the problem for me - Claws is running now smooth, without any locks. -- regards, Maciej Suszko.
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