linux-kernel - [PATCH 3/7] pstore: Warn for the case of PSTORE_TYPE

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1476947872-14485-4-git-send-email-joelaf@google.com>
Date:   Thu, 20 Oct 2016 00:17:48 -0700
From:   Joel Fernandes <joelaf@...gle.com>
To:     linux-kernel@...r.kernel.org
Cc:     Kees Cook <keescook@...omium.org>,
        Joel Fernandes <joelaf@...gle.com>,
        Anton Vorontsov <anton@...msg.org>,
        Colin Cross <ccross@...roid.com>,
        Tony Luck <tony.luck@...el.com>
Subject: [PATCH 3/7] pstore: Warn for the case of PSTORE_TYPE_PMSG write using deprecated function

PMSG now uses ramoops_pstore_write_buf_user instead of ramoops_pstore_write_buf
Print a ratelimited warning if the ramoops_pstore_write_buf is called.

Signed-off-by: Joel Fernandes <joelaf@...gle.com>
---
 fs/pstore/ram.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c
index cb07ef6..9104ae9 100644
--- a/fs/pstore/ram.c
+++ b/fs/pstore/ram.c
@@ -288,10 +288,8 @@ static int notrace ramoops_pstore_write_buf(enum pstore_type_id type,
 		persistent_ram_write(cxt->fprz, buf, size, RAM_LOCK);
 		return 0;
 	} else if (type == PSTORE_TYPE_PMSG) {
-		if (!cxt->mprz)
-			return -ENOMEM;
-		persistent_ram_write(cxt->mprz, buf, size, RAM_LOCK);
-		return 0;
+		pr_warn_ratelimited("ramoops: warning: PMSG shouldn't call %s\n",
+				    __func__);
 	}
 
 	if (type != PSTORE_TYPE_DMESG)
-- 
2.7.4