cifs: fix return value for cifs_listxattr

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[ Upstream commit 0c5d6cb664 ]

If the application buffer was too small to fit all the names
we would still count the number of bytes and return this for
listxattr. This would then trigger a BUG in usercopy.c

Fix the computation of the size so that we return -ERANGE
correctly when the buffer is too small.

This fixes the kernel BUG for xfstest generic/377

Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Ronnie Sahlberg 2018-10-25 15:43:36 +10:00 • committed by Greg Kroah-Hartman

parent ad1834fd8a

commit e4ed4e68c6

1 changed files with 6 additions and 5 deletions

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fs/cifs/smb2ops.c

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