[fuse-devel] SIGBUS to toplevel process

[Roberto -M. G. <bob...@gm...>]

Hi all.

I'm trying to chroot OpenOffice in a FUSE filesystem (which maps 1:1
the effective filesystem, and adds some contents of mine), but it
happen that oowriter receives a SIGBUS signal when executing this:

getuid()                                = 1000
access("/home/madbob", F_OK)            = 0
open("/home/madbob/.execoooAG75Ks", O_RDWR|O_CREAT|O_EXCL, 0600) = 16
unlink("/home/madbob/.execoooAG75Ks")   = 0
ftruncate(16, 4096)                     = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_SHARED, 16, 0) = 0x7f54075bc000
mmap(NULL, 4096, PROT_READ|PROT_EXEC, MAP_SHARED, 16, 0) = 0x7f54075bb000
--- SIGBUS (Bus error) @ 0 (0) ---

What may be so wrong in my FUSE filesystem to induce kernel to produce
a that signal? Or is it an error somewhere else?

I've try with -odirect_ino but we already know it has his problems with mmap().
I've try with -ohard_remove, due that open/unlink/ftruncate sequence,
but obtain scarse results.

Any other suggestion?

-- 
Roberto -MadBob- Guido
- http://claimid.com/madbob