Re: [fuse-devel] fuse lib forget node cores

[Rahul S. <sha...@gm...>]

I have managed to reproduce this issue.


mount fuse with these options "-odefault_permissions,use_ino, allow_other,
nonempty, big_writes, remember=300000"

mkdir /d1/
mkdir /d2/
touch /d1/f1
ln /d1/f1 /d2/linkfile
rm -rf /d1
rm -rf /d2

This generates the core dump

Thanks

On Tue, Feb 28, 2017 at 2:48 PM, Rahul Shah <sha...@gm...> wrote:

> Hi Nikolaus,
>
> Thanks for the reply.
>
> We bumped into this issue few days back. Unfortunately we are not able to
> reproduce this but we will keep trying it. I am sure its one of those
> timing issues.
>
> What we are doing is create hard links /d1/a -> /d1/b  and /d1/a -> /d2/b
> Read all the hard links and delete all the files and dirs (d1 and d2)
> which resulted in fuse seg fault inside forget_node()
> During delete phase we see the fuse credumps.
>
> Thanks!
> Rahul
>
>
> On Tue, Feb 28, 2017 at 2:34 PM, Nikolaus Rath <Nik...@ra...> wrote:
>
>> On Feb 28 2017, Rahul Shah <shahrahulb-Re5JQEeQqe8AvxtiuM
>> wx...@pu...> wrote:
>> > Hi,
>> >
>> > I am hitting an issue similar to where the forget_node asserts on
>> >
>> > assert(node->nlookup >= nlookup)
>> >
>> > https://sourceforge.net/p/fuse/mailman/message/19717137/
>> >
>> > I use "remember" option to 3 days.
>> >
>> > Was there any fix/patch for this issue? I am using 2.9.3
>>
>> I don't think so, no. If you could create a testcase to reproduce the
>> problem and report an issue at
>> https://github.com/libfuse/libfuse/issues, that'd be great.
>>
>> (I'm assuming this is distinct from
>> https://github.com/libfuse/libfuse/issues/128)
>>
>> Best,
>> -Nikolaus
>>
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