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SubjectRe: [PATCH v2] net/bpfilter: fix dprintf usage for /dev/kmsg
From: Bruno Meneguele <>
Date: Thu, 12 Mar 2020 20:08:20 -0300

> The bpfilter UMH code was recently changed to log its informative messages to
> /dev/kmsg, however this interface doesn't support SEEK_CUR yet, used by
> dprintf(). As result dprintf() returns -EINVAL and doesn't log anything.
> However there already had some discussions about supporting SEEK_CUR into
> /dev/kmsg interface in the past it wasn't concluded. Since the only user of
> that from userspace perspective inside the kernel is the bpfilter UMH
> (userspace) module it's better to correct it here instead waiting a conclusion
> on the interface.
> Fixes: 36c4357c63f3 ("net: bpfilter: print umh messages to /dev/kmsg")
> Signed-off-by: Bruno Meneguele <>

Applied, thank you.

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