Re: [fuse-devel] valgrind & fuse: failed to exec fusermount: Permission denied

[<sa...@ar...>]

Hi,

I removed the setuid bit of fusermount, and now it works.
I did not found an option to desactivate in valgrind the tracing of=20
setuid executables.

saf

On Fri, Jan 20, 2006 at 08:56:50PM +0000, Richard Dawe wrote:
> Hello.
>=20
> saf wrote:
> >I have a new problem to run valgrind with FUSE:
> >saf@rack ~/cvs/client/fuse/src $ valgrind ./noofs_fuse -c 50 -i 120=20
> >root:noofs@localhost:4242 -f -d -o allow_other /mnt2
> >...
> >Mounting now filesystem via FUSE...
> >init.c@un_init(...) [00020]:=20
> >=3D=3D15072=3D=3D=20
> >=3D=3D15072=3D=3D Thread 1:
> >=3D=3D15072=3D=3D Syscall param socketcall.recvmsg(msg) points to uninit=
ialised=20
> >byte(s)
> >=3D=3D15072=3D=3D    at 0x404F7DE: recvmsg (in /lib/tls/libpthread-2.3.5=
=2Eso)
> >=3D=3D15072=3D=3D    by 0x403F54F: fuse_mount (mount.c:281)
> >=3D=3D15072=3D=3D    by 0x403ECD1: fuse_setup_common (helper.c:203)
> >=3D=3D15072=3D=3D    by 0x403EEAD: fuse_main_common (helper.c:262)
> >=3D=3D15072=3D=3D    by 0x804CA75: main (main.c:59)
> >=3D=3D15072=3D=3D  Address 0xBEF96748 is on thread 1's stack
> >fuse: failed to exec fusermount: Permission denied
> >
> >I don't understand why I get Permission denied, I tried also as root use=
r=20
> >with root permissions,
> >I got the same error.
> >It seems that it comes from recvmsg of the fuse module to the fuse lib?
> >
> >I use fuse 2.5.0 and valgrind-3.1.0-Debian.
> >
> >Does some body knows why I get this error? I need to debug my fuse clien=
t.
>=20
> I've seen similar problems with setuid programs (e.g.: qmail-queue from=
=20
> qmail). It may be this bug:
>=20
> "executing ssh from inside valgrind fails"
> <http://bugs.kde.org/show_bug.cgi?id=3D119404>
>=20
> It's apparently fixed in the subversion trunk version of valgrind,=20
> although I haven't tried that.
>=20
> Bye, Rich =3D]
>=20
> --=20
> Richard Dawe [ http://homepages.nildram.co.uk/~phekda/richdawe/ ]
>=20
> "You can't evaluate a man by logic alone."
>   -- McCoy, "I, Mudd", Star Trek
>=20
>=20
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--=20
Best regards,
Stephan FERRARO
NOOFS Core Developper - http://www.noofs.org/
GnuPG public key: gpg --keyserver www.keyserver.net --recv-key 94B2664F