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Commit 794e811d1443 ("fuse: split out filesystem part of request sending")
alters the pid sent on force && nocreds requests.
Previously these allocated a zeroed request and skipped fuse_force_creds(),
so they went out with in.h.pid == 0.
In fuse_fill_creds(), args->pid is now set before the nocreds early return,
and fuse_args_to_req() copies it unconditionally - so writeback, release,
and DESTROY requests now report the triggering (often kernel-worker) pid
instead of 0.
Move the nocreds check above setting args->pid. Also remove the
WARN_ON(!args->nocreds) from the !args->force branch, since it's obviously
not going to be triggered.
Reported-by: David CARLIER <devnexen@gmail.com>
Closes: https://lore.kernel.org/all/CA+XhMqye_NBihcadRTU=w4xAfrdY9rsMB3oHF5+bwHukkjHMoQ@mail.gmail.com/
Fixes: 794e811d1443 ("fuse: split out filesystem part of request sending")
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
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