ceph-fuse segfaults in 14.2.2

[Andras Pataki <apataki@xxxxxxxxxxxxxxxxxxxxx>]

Dear ceph users,

After upgrading our ceph-fuse clients to 14.2.2, we've been seeing sporadic segfaults with not super revealing stack traces:

in thread 7fff5a7fc700 thread_name:ceph-fuse

 ceph version 14.2.2 (4f8fa0a0024755aae7d95567c63f11d6862d55be) nautilus (stable)
 1: (()+0xf5d0) [0x7ffff60b85d0]
 2: (()+0x255a0c) [0x5555557a9a0c]
 3: (()+0x16b6b) [0x7ffff7bb3b6b]
 4: (()+0x13401) [0x7ffff7bb0401]
 5: (()+0x7dd5) [0x7ffff60b0dd5]
 6: (clone()+0x6d) [0x7ffff4b5cead]
 NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed to interpret this.

Prior to 14.2.2, we've run 12.2.11 and 13.2.5 and have not seen this issue.  Has anyone encountered this?  If it isn't known - I can file a bug tracker for it.

Andras

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