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SubjectRe: [syzbot] WARNING in p9_client_destroy
On Samstag, 26. März 2022 13:24:10 CET wrote:
> Christian Schoenebeck wrote on Sat, Mar 26, 2022 at 12:48:26PM +0100:
> > [...]
> >
> > > Signed-off-by: David Kahurani <>
> > > Reported-by:
> Looks good to me - it's pretty much what I'd have done if I hadn't
> forgotten!
> It doesn't strike me as anything critical and I don't have anything else
> for this cycle so I'll just queue it in -next for now, and submit it
> at the start of the 5.19 cycle in ~2months.

BTW, another issue that I am seeing for a long time affects the fs-cache: When
I use cache=mmap then things seem to be harmless, I periodically see messages
like these, but that's about it:

[90763.435562] FS-Cache: Duplicate cookie detected
[90763.436514] FS-Cache: O-cookie c=00dcb42f [p=00000003 fl=216 nc=0 na=0]
[90763.437795] FS-Cache: O-cookie d=0000000000000000{?} n=0000000000000000
[90763.440096] FS-Cache: O-key=[8] 'a7ab2c0000000000'
[90763.441656] FS-Cache: N-cookie c=00dcb4a7 [p=00000003 fl=2 nc=0 na=1]
[90763.446753] FS-Cache: N-cookie d=000000005b583d5a{9p.inode} n=00000000212184fb
[90763.448196] FS-Cache: N-key=[8] 'a7ab2c0000000000'

The real trouble starts when I use cache=loose though, in this case I get all
sorts of misbehaviours from time to time, especially complaining about invalid
file descriptors.

Any clues?

Best regards,
Christian Schoenebeck

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