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From: David Howells <dhowells@redhat.com>
In-Reply-To: <ZXxUx_nh4HNTaDJx@codewreck.org>
References: <ZXxUx_nh4HNTaDJx@codewreck.org> <20231213152350.431591-1-dhowells@redhat.com> <20231215-einziehen-landen-94a63dd17637@brauner>
To: Dominique Martinet <asmadeus@codewreck.org>
Cc: dhowells@redhat.com, Christian Brauner <brauner@kernel.org>,
    Jeff Layton <jlayton@kernel.org>, Steve French <smfrench@gmail.com>,
    Matthew Wilcox <willy@infradead.org>,
    Marc Dionne <marc.dionne@auristor.com>,
    Paulo Alcantara <pc@manguebit.com>,
    Shyam Prasad N <sprasad@microsoft.com>, Tom Talpey <tom@talpey.com>,
    Eric Van Hensbergen <ericvh@kernel.org>,
    Ilya Dryomov <idryomov@gmail.com>, linux-cachefs@redhat.com,
    linux-afs@lists.infradead.org, linux-cifs@vger.kernel.org,
    linux-nfs@vger.kernel.org, ceph-devel@vger.kernel.org,
    v9fs@lists.linux.dev, linux-fsdevel@vger.kernel.org,
    linux-mm@kvack.org, netdev@vger.kernel.org,
    linux-kernel@vger.kernel.org
Subject: Re: [PATCH v4 00/39] netfs, afs, 9p: Delegate high-level I/O to netfslib
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Date: Wed, 20 Dec 2023 10:04:26 +0000
Message-ID: <1384979.1703066666@warthog.procyon.org.uk>

Dominique Martinet <asmadeus@codewreck.org> wrote:

> I'll go back to dhowell's tree to finally test 9p a bit,
> sorry for lack of involvement just low on time all around.

I've rebased my tree on -rc6 rather than linux-next for Christian to pull.

Ganesha keeps falling over:

[root@carina build]# valgrind ./ganesha.nfsd -L /var/log/ganesha/ganesha.l=
og -f /etc/ganesha/ganesha.conf -N NIV_EVENT -F
=3D=3D38960=3D=3D Memcheck, a memory error detector
=3D=3D38960=3D=3D Copyright (C) 2002-2022, and GNU GPL'd, by Julian Seward=
 et al.
=3D=3D38960=3D=3D Using Valgrind-3.22.0 and LibVEX; rerun with -h for copy=
right info
=3D=3D38960=3D=3D Command: ./ganesha.nfsd -L /var/log/ganesha/ganesha.log =
-f /etc/ganesha/ganesha.conf -N NIV_EVENT -F
=3D=3D38960=3D=3D =

=3D=3D38960=3D=3D Thread 138:
=3D=3D38960=3D=3D Invalid read of size 4
=3D=3D38960=3D=3D    at 0x4DC32D6: pthread_cond_signal@@GLIBC_2.3.2 (pthre=
ad_cond_signal.c:41)
=3D=3D38960=3D=3D    by 0x489700C: sync_cb (fsal_helper.c:1837)
=3D=3D38960=3D=3D    by 0x49D79DF: mdc_read_super_cb (mdcache_file.c:559)
=3D=3D38960=3D=3D    by 0x49D7AC5: mdc_read_cb (mdcache_file.c:582)
=3D=3D38960=3D=3D    by 0x7B4B81F: vfs_read2 (file.c:1317)
=3D=3D38960=3D=3D    by 0x49D7BCF: mdcache_read2 (mdcache_file.c:617)
=3D=3D38960=3D=3D    by 0x4897173: fsal_read (fsal_helper.c:1849)
=3D=3D38960=3D=3D    by 0x4A10FD4: _9p_read (9p_read.c:134)
=3D=3D38960=3D=3D    by 0x4A0A024: _9p_process_buffer (9p_interpreter.c:18=
1)
=3D=3D38960=3D=3D    by 0x4A09DCB: _9p_tcp_process_request (9p_interpreter=
.c:133)
=3D=3D38960=3D=3D    by 0x48CE182: _9p_execute (9p_dispatcher.c:315)
=3D=3D38960=3D=3D    by 0x48CE508: _9p_worker_run (9p_dispatcher.c:412)
=3D=3D38960=3D=3D  Address 0x24 is not stack'd, malloc'd or (recently) fre=
e'd
=3D=3D38960=3D=3D =

=3D=3D38960=3D=3D =

=3D=3D38960=3D=3D Process terminating with default action of signal 11 (SI=
GSEGV): dumping core
=3D=3D38960=3D=3D  Access not within mapped region at address 0x24
=3D=3D38960=3D=3D    at 0x4DC32D6: pthread_cond_signal@@GLIBC_2.3.2 (pthre=
ad_cond_signal.c:41)
=3D=3D38960=3D=3D    by 0x489700C: sync_cb (fsal_helper.c:1837)
=3D=3D38960=3D=3D    by 0x49D79DF: mdc_read_super_cb (mdcache_file.c:559)
=3D=3D38960=3D=3D    by 0x49D7AC5: mdc_read_cb (mdcache_file.c:582)
=3D=3D38960=3D=3D    by 0x7B4B81F: vfs_read2 (file.c:1317)
=3D=3D38960=3D=3D    by 0x49D7BCF: mdcache_read2 (mdcache_file.c:617)
=3D=3D38960=3D=3D    by 0x4897173: fsal_read (fsal_helper.c:1849)
=3D=3D38960=3D=3D    by 0x4A10FD4: _9p_read (9p_read.c:134)
=3D=3D38960=3D=3D    by 0x4A0A024: _9p_process_buffer (9p_interpreter.c:18=
1)
=3D=3D38960=3D=3D    by 0x4A09DCB: _9p_tcp_process_request (9p_interpreter=
.c:133)
=3D=3D38960=3D=3D    by 0x48CE182: _9p_execute (9p_dispatcher.c:315)
=3D=3D38960=3D=3D    by 0x48CE508: _9p_worker_run (9p_dispatcher.c:412)

David