linux-kernel - [PATCH 5/6] Handle possible bio

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]

Date:	Tue, 14 Apr 2009 16:36:45 +0530
From:	Nikanth Karthikesan <knikanth@...e.de>
To:	xfs-masters@....sgi.com
Cc:	xfs@....sgi.com, linux-kernel@...r.kernel.org,
	Jens Axboe <jens.axboe@...cle.com>
Subject: [PATCH 5/6] Handle possible bio_alloc failure in xfs

Handle bio_alloc failure in xfs.

Signed-off-by: Nikanth Karthikesan <knikanth@...e.de>

---

Index: linux-2.6/fs/xfs/linux-2.6/xfs_buf.c
===================================================================
--- linux-2.6.orig/fs/xfs/linux-2.6/xfs_buf.c
+++ linux-2.6/fs/xfs/linux-2.6/xfs_buf.c
@@ -1196,6 +1196,8 @@ _xfs_buf_ioapply(
 	      (XBF_READ|_XBF_PAGE_LOCKED)) &&
 	    (blocksize >= PAGE_CACHE_SIZE)) {
 		bio = bio_alloc(GFP_NOIO, 1);
+		if (unlikely(!bio))
+			goto out_enomem;
 
 		bio->bi_bdev = bp->b_target->bt_bdev;
 		bio->bi_sector = sector - (offset >> BBSHIFT);
@@ -1217,6 +1219,9 @@ next_chunk:
 		nr_pages = total_nr_pages;
 
 	bio = bio_alloc(GFP_NOIO, nr_pages);
+	if (unlikely(!bio))
+		goto out_enomem;
+
 	bio->bi_bdev = bp->b_target->bt_bdev;
 	bio->bi_sector = sector;
 	bio->bi_end_io = xfs_buf_bio_end_io;
@@ -1247,6 +1252,11 @@ submit_io:
 		bio_put(bio);
 		xfs_buf_ioerror(bp, EIO);
 	}
+	return;
+
+out_enomem:
+	xfs_buf_ioerror(bp, ENOMEM);
+	
 }
 
 int



--
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/