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Subjectbpfilter logging write errors in dmesg
Hey Christoph,

Seems that commit
6955a76fbcd5 ("bpfilter: switch to kernel_write")
causes bpfilter to spew these useless messages in dmesg?

[ 26.356824] Started bpfilter
[ 26.357059] bpfilter: write fail -22
[ 26.396244] Started bpfilter
[ 26.396325] bpfilter: Loaded bpfilter_umh pid 637
[ 26.396542] bpfilter: write fail -22
[ 26.409588] bpfilter: Loaded bpfilter_umh pid 638
[ 26.410790] Started bpfilter
[ 26.410960] bpfilter: write fail -22
[ 26.445718] Started bpfilter
[ 26.445799] bpfilter: Loaded bpfilter_umh pid 640
[ 26.445983] bpfilter: write fail -22
[ 26.451122] bpfilter: read fail 0
[ 26.496497] bpfilter: Loaded bpfilter_umh pid 648
[ 26.497889] Started bpfilter
[ 26.750028] bpfilter: write fail -22
[ 26.768400] Started bpfilter
[ 26.768496] bpfilter: Loaded bpfilter_umh pid 661
[ 26.768699] bpfilter: write fail -22
[ 26.806550] Started bpfilter
[ 26.806616] bpfilter: Loaded bpfilter_umh pid 663
[ 26.864708] bpfilter: write fail -22
[ 26.872345] bpfilter: Loaded bpfilter_umh pid 666
[ 26.873072] Started bpfilter
[ 26.873194] bpfilter: write fail -22
[ 27.295514] kauditd_printk_skb: 22 callbacks suppressed

This is on a pure v5.8-rc7 via make bindep-pkg. I'm not using bpfilter
in any shape or form afaict and haven't seen those messages before and
this seems to be the last change I see.

Thanks!
Christian

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