linux-kernel - Re: [V9fs-developer] 9p regression linux-next next-20230327

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Date:   Tue, 28 Mar 2023 10:58:24 +0900
From:   asmadeus@...ewreck.org
To:     Luis Chamberlain <mcgrof@...nel.org>
Cc:     lucho@...kov.net, Pankaj Raghav <p.raghav@...sung.com>,
        Eric Van Hensbergen <ericvh@...il.com>,
        Amir Goldstein <amir73il@...il.com>,
        Jeff Layton <jlayton@...nel.org>,
        Josef Bacik <josef@...icpanda.com>,
        linux-kernel@...r.kernel.org, v9fs-developer@...ts.sourceforge.net
Subject: Re: [V9fs-developer] 9p regression linux-next next-20230327

asmadeus@...ewreck.org wrote on Tue, Mar 28, 2023 at 10:44:46AM +0900:
> I've just built Eric's for-next branch and I'm not seeing any issue
> there, I'll be checking the next tag you pointed at next.

Well, at the very least I can confirm mount hangs there :)

[<0>] p9_client_rpc+0xf1/0x380 [9pnet]
[<0>] p9_client_attach+0x8d/0x1d0 [9pnet]
[<0>] v9fs_session_init+0x4ad/0x810 [9p]
[<0>] v9fs_mount+0x6a/0x420 [9p]
[<0>] legacy_get_tree+0x28/0x50
[<0>] vfs_get_tree+0x1a/0x90
[<0>] path_mount+0x746/0x9b0
[<0>] __x64_sys_mount+0x153/0x1b0
[<0>] do_syscall_64+0x3c/0x80
[<0>] entry_SYSCALL_64_after_hwframe+0x63/0xcd


And my async flush hasn't gotten fixed yet, so that mount cannot be
killed either.


I can mount over tcp so it's a virtio change, I'll dig a bit more and
report back with you and cc
-- 
Dominique