On 03/29/2017 11:02 AM, Sagi Grimberg wrote: > Hi, > > I just got the below kmemleak report. Just thought I'd send it > out as I don't have time to look into it just now... > > -- > unreferenced object 0xffff8ab236717920 (size 32): > comm "swapper/0", pid 1, jiffies 4294892551 (age 9966.044s) > hex dump (first 32 bytes): > 20 79 71 36 b2 8a ff ff 20 79 71 36 b2 8a ff ff yq6.... yq6.... > 00 00 00 00 ff ff ff ff e0 c1 4b 9b ff ff ff ff ..........K..... > backtrace: > [<ffffffff9b84212a>] kmemleak_alloc+0x4a/0xa0 > [<ffffffff9b1ff780>] kmem_cache_alloc_trace+0x110/0x230 > [<ffffffff9b3cd74f>] blk_alloc_queue_stats+0x1f/0x40 > [<ffffffff9b3bacd4>] blk_alloc_queue_node+0x94/0x2e0 > [<ffffffff9b3cbdd0>] blk_mq_init_queue+0x20/0x60 > [<ffffffff9b593665>] loop_add+0xe5/0x270 > [<ffffffff9bfe348b>] loop_init+0x10b/0x149 > [<ffffffff9b002193>] do_one_initcall+0x53/0x1a0 > [<ffffffff9bf8b133>] kernel_init_freeable+0x16d/0x1f3 > [<ffffffff9b83ed0e>] kernel_init+0xe/0x100 > [<ffffffff9b84d27c>] ret_from_fork+0x2c/0x40 > [<ffffffffffffffff>] 0xffffffffffffffff You don't mention what you are running? But I'm assuming it was my 4.12 branch. If so, this is fixed in a later revision of it. If you pull an update, it should go away. -- Jens Axboe