nfsd: make a copy of struct iattr before calling notify_change

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notify_change can modify the iattr structure. In particular it can
end up setting ATTR_MODE when ATTR_KILL_SUID is already set, causing
a BUG() if the same iattr is passed to notify_change more than once.

Make a copy of the struct iattr before calling notify_change.

Reported-by: Zhi Li <yieli@redhat.com>
Link: https://bugzilla.redhat.com/show_bug.cgi?id=2207969
Tested-by: Zhi Li <yieli@redhat.com>
Fixes: 34b91dda71 ("NFSD: Make nfsd4_setattr() wait before returning NFS4ERR_DELAY")
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>

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Jeff Layton 2023-05-17 12:26:44 -04:00 • committed by Chuck Lever

parent 21a3f33289

commit d53d70084d

1 changed files with 9 additions and 1 deletions

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fs/nfsd/vfs.c

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