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authorDan Williams <dan.j.williams@intel.com>2015-10-21 20:20:18 +0300
committerJens Axboe <axboe@fb.com>2015-10-21 23:43:42 +0300
commitac6fc48c9fb7d3220ec4e0be0c29bb314ea75f9f (patch)
treeb9f2aed362449db3f27c233202eb08d5267c5812 /include/linux/genhd.h
parent3ef28e83ab15799742e55fd13243a5f678b04242 (diff)
downloadlinux-ac6fc48c9fb7d3220ec4e0be0c29bb314ea75f9f.tar.xz
block: move blk_integrity to request_queue
A trace like the following proceeds a crash in bio_integrity_process() when it goes to use an already freed blk_integrity profile. BUG: unable to handle kernel paging request at ffff8800d31b10d8 IP: [<ffff8800d31b10d8>] 0xffff8800d31b10d8 PGD 2f65067 PUD 21fffd067 PMD 80000000d30001e3 Oops: 0011 [#1] SMP Dumping ftrace buffer: --------------------------------- ndctl-2222 2.... 44526245us : disk_release: pmem1s systemd--2223 4.... 44573945us : bio_integrity_endio: pmem1s <...>-409 4.... 44574005us : bio_integrity_process: pmem1s --------------------------------- [..] Call Trace: [<ffffffff8144e0f9>] ? bio_integrity_process+0x159/0x2d0 [<ffffffff8144e4f6>] bio_integrity_verify_fn+0x36/0x60 [<ffffffff810bd2dc>] process_one_work+0x1cc/0x4e0 Given that a request_queue is pinned while i/o is in flight and that a gendisk is allowed to have a shorter lifetime, move blk_integrity to request_queue to satisfy requests arriving after the gendisk has been torn down. Cc: Christoph Hellwig <hch@lst.de> Cc: Martin K. Petersen <martin.petersen@oracle.com> [martin: fix the CONFIG_BLK_DEV_INTEGRITY=n case] Tested-by: Ross Zwisler <ross.zwisler@linux.intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/linux/genhd.h')
-rw-r--r--include/linux/genhd.h1
1 files changed, 0 insertions, 1 deletions
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 82f4911e0ad8..847cc1d91634 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -210,7 +210,6 @@ struct gendisk {
atomic_t sync_io; /* RAID */
struct disk_events *ev;
#ifdef CONFIG_BLK_DEV_INTEGRITY
- struct blk_integrity integrity;
struct kobject integrity_kobj;
#endif /* CONFIG_BLK_DEV_INTEGRITY */
int node_id;