Andrey Vagin 8515736604 block: fix memory leaks on unplugging block device ... All objects, which are allocated in blk_mq_register_disk, must be released in blk_mq_unregister_disk. I use a KVM virtual machine and virtio disk to reproduce this issue. kmemleak: 18 new suspected memory leaks (see /sys/kernel/debug/kmemleak) $ cat /sys/kernel/debug/kmemleak | head -n 30 unreferenced object 0xffff8800b6636150 (size 8): comm "kworker/0:2", pid 65, jiffies 4294809903 (age 86.358s) hex dump (first 8 bytes): 76 69 72 74 69 6f 34 00 virtio4. backtrace: [<ffffffff8165d41e>] kmemleak_alloc+0x4e/0xb0 [<ffffffff8118cfc5>] __kmalloc_track_caller+0xf5/0x260 [<ffffffff81155b11>] kstrdup+0x31/0x60 [<ffffffff812242be>] sysfs_new_dirent+0x2e/0x140 [<ffffffff81224678>] create_dir+0x38/0xe0 [<ffffffff812249e3>] sysfs_create_dir_ns+0x73/0xc0 [<ffffffff8130dfa9>] kobject_add_internal+0xc9/0x340 [<ffffffff8130e535>] kobject_add+0x65/0xb0 [<ffffffff813f34f8>] device_add+0x128/0x660 [<ffffffff813f3a4a>] device_register+0x1a/0x20 [<ffffffff813ae6f8>] register_virtio_device+0x98/0xe0 [<ffffffff813b0cce>] virtio_pci_probe+0x12e/0x1c0 [<ffffffff81340675>] local_pci_probe+0x45/0xa0 [<ffffffff81341a51>] pci_device_probe+0x121/0x130 [<ffffffff813f67f7>] driver_probe_device+0x87/0x390 [<ffffffff813f6b3b>] __device_attach+0x3b/0x40 unreferenced object 0xffff8800b65aa1d8 (size 144): Fixes: 320ae51fee (blk-mq: new multi-queue block IO queueing mechanism) Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrey Vagin <avagin@openvz.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>		2013-12-06 09:18:02 -07:00
..
partitions
blk-cgroup.c
blk-cgroup.h
blk-core.c
blk-exec.c
blk-flush.c	block: submit_bio_wait() conversions	2013-11-24 16:33:41 -07:00
blk-integrity.c
blk-ioc.c
blk-iopoll.c
blk-lib.c
blk-map.c
blk-merge.c
blk-mq-cpu.c
blk-mq-cpumap.c
blk-mq-sysfs.c	block: fix memory leaks on unplugging block device	2013-12-06 09:18:02 -07:00
blk-mq-tag.c
blk-mq-tag.h
blk-mq.c	blk-mq: fix use-after-free of request	2013-12-05 10:50:39 -07:00
blk-mq.h
blk-settings.c
blk-softirq.c
blk-sysfs.c
blk-tag.c
blk-throttle.c
blk-timeout.c
blk.h
bsg-lib.c
bsg.c
cfq-iosched.c
cmdline-parser.c
compat_ioctl.c
deadline-iosched.c
elevator.c
genhd.c
ioctl.c
Kconfig
Kconfig.iosched
Makefile
noop-iosched.c
partition-generic.c
scsi_ioctl.c