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-next>] [day] [month] [year] [list]
Message-Id: <1396339327-16090-1-git-send-email-tlinder@codeaurora.org>
Date:	Tue,  1 Apr 2014 11:02:07 +0300
From:	Tanya Brokhman <tlinder@...eaurora.org>
To:	dedekind1@...il.com
Cc:	linux-mtd@...ts.infradead.org,
	Tanya Brokhman <tlinder@...eaurora.org>,
	linux-kernel@...r.kernel.org (open list)
Subject: [RFC/PATCH] mtd: ubi: Fix ubi free PEBs count calculation

The ubi->free_count should be updated with every insert/remove to/from
the ubi->free list.

Signed-off-by: Tanya Brokhman <tlinder@...eaurora.org>

diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index 9a36f78..ca74d19 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -690,6 +690,8 @@ static struct ubi_wl_entry *get_peb_for_wl(struct ubi_device *ubi)
 
 	e = find_wl_entry(ubi, &ubi->free, WL_FREE_MAX_DIFF);
 	self_check_in_wl_tree(ubi, e, &ubi->free);
+	ubi->free_count--;
+	ubi_assert(ubi->free_count >= 0);
 	rb_erase(&e->u.rb, &ubi->free);
 
 	return e;
@@ -1090,6 +1092,7 @@ static int wear_leveling_worker(struct ubi_device *ubi, struct ubi_work *wrk,
 
 			/* Give the unused PEB back */
 			wl_tree_add(e2, &ubi->free);
+			ubi->free_count++;
 			goto out_cancel;
 		}
 		self_check_in_wl_tree(ubi, e1, &ubi->used);
-- 
1.7.6
-- 
QUALCOMM ISRAEL, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundat

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ