From ee9d66182392695535cc9fccfcb40c16f72de2a9 Mon Sep 17 00:00:00 2001 From: Sebastien Tisserant Date: Thu, 1 Aug 2019 12:06:08 -0500 Subject: SMB3: Kernel oops mounting a encryptData share with CONFIG_DEBUG_VIRTUAL Fix kernel oops when mounting a encryptData CIFS share with CONFIG_DEBUG_VIRTUAL Signed-off-by: Sebastien Tisserant Reviewed-by: Pavel Shilovsky Signed-off-by: Steve French --- fs/cifs/smb2ops.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'fs/cifs/smb2ops.c') diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 19589922ef2b..64a5864127be 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -3489,7 +3489,15 @@ fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, unsigned int orig_len, static inline void smb2_sg_set_buf(struct scatterlist *sg, const void *buf, unsigned int buflen) { - sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf)); + void *addr; + /* + * VMAP_STACK (at least) puts stack into the vmalloc address space + */ + if (is_vmalloc_addr(buf)) + addr = vmalloc_to_page(buf); + else + addr = virt_to_page(buf); + sg_set_page(sg, addr, buflen, offset_in_page(buf)); } /* Assumes the first rqst has a transform header as the first iov. -- cgit v1.2.3-59-g8ed1b