From: Dave Jiang <dave.jiang@intel.com> To: gregkh@linuxfoundation.org Cc: linux-kernel@vger.kernel.org, linux-nvdimm@lists.01.org Subject: [PATCH] uio: fix is_source param for check_copy_size() in copy_to_iter_mcsafe() Date: Wed, 05 Sep 2018 13:31:40 -0700 [thread overview] Message-ID: <153617950046.33664.13445188581267552601.stgit@djiang5-desk3.ch.intel.com> (raw) copy_to_iter_mcsafe() is passing in the is_source parameter as "false" to check_copy_size(). This is different than what copy_to_iter() does. Also, the addr parameter passed to check_copy_size() is the source so therefore we should be passing in "true" instead. Fixes: 8780356ef630 ("x86/asm/memcpy_mcsafe: Define copy_to_iter_mcsafe()") Reported-by: Fan Du <fan.du@intel.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Vishal Verma <vishal.l.verma@intel.com> --- include/linux/uio.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/uio.h b/include/linux/uio.h index 409c845d4cd3..422b1c01ee0d 100644 --- a/include/linux/uio.h +++ b/include/linux/uio.h @@ -172,7 +172,7 @@ size_t copy_from_iter_flushcache(void *addr, size_t bytes, struct iov_iter *i) static __always_inline __must_check size_t copy_to_iter_mcsafe(void *addr, size_t bytes, struct iov_iter *i) { - if (unlikely(!check_copy_size(addr, bytes, false))) + if (unlikely(!check_copy_size(addr, bytes, true))) return 0; else return _copy_to_iter_mcsafe(addr, bytes, i); _______________________________________________ Linux-nvdimm mailing list Linux-nvdimm@lists.01.org https://lists.01.org/mailman/listinfo/linux-nvdimm
WARNING: multiple messages have this Message-ID (diff)
From: Dave Jiang <dave.jiang@intel.com> To: gregkh@linuxfoundation.org Cc: dan.j.williams@intel.com, vishal.l.verma@intel.com, fan.du@intel.com, linux-nvdimm@lists.01.org, linux-kernel@vger.kernel.org Subject: [PATCH] uio: fix is_source param for check_copy_size() in copy_to_iter_mcsafe() Date: Wed, 05 Sep 2018 13:31:40 -0700 [thread overview] Message-ID: <153617950046.33664.13445188581267552601.stgit@djiang5-desk3.ch.intel.com> (raw) copy_to_iter_mcsafe() is passing in the is_source parameter as "false" to check_copy_size(). This is different than what copy_to_iter() does. Also, the addr parameter passed to check_copy_size() is the source so therefore we should be passing in "true" instead. Fixes: 8780356ef630 ("x86/asm/memcpy_mcsafe: Define copy_to_iter_mcsafe()") Reported-by: Fan Du <fan.du@intel.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Vishal Verma <vishal.l.verma@intel.com> --- include/linux/uio.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/uio.h b/include/linux/uio.h index 409c845d4cd3..422b1c01ee0d 100644 --- a/include/linux/uio.h +++ b/include/linux/uio.h @@ -172,7 +172,7 @@ size_t copy_from_iter_flushcache(void *addr, size_t bytes, struct iov_iter *i) static __always_inline __must_check size_t copy_to_iter_mcsafe(void *addr, size_t bytes, struct iov_iter *i) { - if (unlikely(!check_copy_size(addr, bytes, false))) + if (unlikely(!check_copy_size(addr, bytes, true))) return 0; else return _copy_to_iter_mcsafe(addr, bytes, i);
next reply other threads:[~2018-09-05 20:31 UTC|newest] Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-09-05 20:31 Dave Jiang [this message] 2018-09-05 20:31 ` [PATCH] uio: fix is_source param for check_copy_size() in copy_to_iter_mcsafe() Dave Jiang 2018-09-06 15:45 ` Dave Jiang 2018-09-06 15:45 ` Dave Jiang 2018-09-12 7:48 ` Greg KH 2018-09-12 7:48 ` Greg KH 2018-09-12 21:51 ` Dan Williams 2018-09-12 21:51 ` Dan Williams 2018-09-12 21:57 ` Greg KH 2018-09-12 21:57 ` Greg KH 2018-09-12 22:02 ` Dan Williams 2018-09-12 22:02 ` Dan Williams
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=153617950046.33664.13445188581267552601.stgit@djiang5-desk3.ch.intel.com \ --to=dave.jiang@intel.com \ --cc=gregkh@linuxfoundation.org \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-nvdimm@lists.01.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.