linux-kernel - [PATCH]: Bug in MM

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>] [day] [month] [year] [list]

Message-Id: <20070227.111900.68039270.davem@davemloft.net>
Date:	Tue, 27 Feb 2007 11:19:00 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	linux-kernel@...r.kernel.org
Subject: [PATCH]: Bug in MM_RB debugging?

The code is seemingly trying to make sure that rb_next()
brings us to successive increasing vma entries.

But the two variables, prev and pend, used to perform these
checks, are never advanced.

Signed-off-by: David S. Miller <davem@...emloft.net>

diff --git a/mm/mmap.c b/mm/mmap.c
index eb509ae..84f997d 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -299,6 +299,8 @@ static int browse_rb(struct rb_root *root)
 			printk("vm_end %lx < vm_start %lx\n", vma->vm_end, vma->vm_start);
 		i++;
 		pn = nd;
+		prev = vma->vm_start;
+		pend = vma->vm_end;
 	}
 	j = 0;
 	for (nd = pn; nd; nd = rb_prev(nd)) {
-
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/