From ac6fc48c9fb7d3220ec4e0be0c29bb314ea75f9f Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Wed, 21 Oct 2015 13:20:18 -0400 Subject: 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: [] 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: [] ? bio_integrity_process+0x159/0x2d0 [] bio_integrity_verify_fn+0x36/0x60 [] 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 Cc: Martin K. Petersen [martin: fix the CONFIG_BLK_DEV_INTEGRITY=n case] Tested-by: Ross Zwisler Signed-off-by: Dan Williams Signed-off-by: Jens Axboe --- include/linux/genhd.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux/genhd.h') 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; -- cgit v1.2.1