BUG: memory leak
unreferenced object 0xffff888113841180 (size 128):
  comm "syz-executor.0", pid 3693, jiffies 4295049618 (age 13.660s)
  hex dump (first 32 bytes):
    00 07 eb 85 ff ff ff ff 80 10 99 06 81 88 ff ff  ................
    01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff8235418c>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8235418c>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8235418c>] blk_iolatency_init+0x2c/0x250 block/blk-iolatency.c:765
    [<ffffffff8234a6fb>] blkcg_init_queue+0x11b/0x1f0 block/blk-cgroup.c:1302
    [<ffffffff82335da0>] __alloc_disk_node+0x130/0x240 block/genhd.c:1366
    [<ffffffff8232bbc9>] __blk_mq_alloc_disk+0x99/0xf0 block/blk-mq.c:3961
    [<ffffffff827d2103>] loop_add+0x203/0x3f0 drivers/block/loop.c:1978
    [<ffffffff827d5bc8>] loop_control_ioctl+0xc8/0x350 drivers/block/loop.c:2150
    [<ffffffff8160af8c>] vfs_ioctl fs/ioctl.c:51 [inline]
    [<ffffffff8160af8c>] __do_sys_ioctl fs/ioctl.c:870 [inline]
    [<ffffffff8160af8c>] __se_sys_ioctl fs/ioctl.c:856 [inline]
    [<ffffffff8160af8c>] __x64_sys_ioctl+0xfc/0x140 fs/ioctl.c:856
    [<ffffffff845e47e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff845e47e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff888111377e80 (size 128):
  comm "syz-executor.0", pid 3695, jiffies 4295050188 (age 7.960s)
  hex dump (first 32 bytes):
    00 07 eb 85 ff ff ff ff 90 1b 99 06 81 88 ff ff  ................
    01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff8235418c>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8235418c>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8235418c>] blk_iolatency_init+0x2c/0x250 block/blk-iolatency.c:765
    [<ffffffff8234a6fb>] blkcg_init_queue+0x11b/0x1f0 block/blk-cgroup.c:1302
    [<ffffffff82335da0>] __alloc_disk_node+0x130/0x240 block/genhd.c:1366
    [<ffffffff8232bbc9>] __blk_mq_alloc_disk+0x99/0xf0 block/blk-mq.c:3961
    [<ffffffff827d2103>] loop_add+0x203/0x3f0 drivers/block/loop.c:1978
    [<ffffffff827d5bc8>] loop_control_ioctl+0xc8/0x350 drivers/block/loop.c:2150
    [<ffffffff8160af8c>] vfs_ioctl fs/ioctl.c:51 [inline]
    [<ffffffff8160af8c>] __do_sys_ioctl fs/ioctl.c:870 [inline]
    [<ffffffff8160af8c>] __se_sys_ioctl fs/ioctl.c:856 [inline]
    [<ffffffff8160af8c>] __x64_sys_ioctl+0xfc/0x140 fs/ioctl.c:856
    [<ffffffff845e47e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff845e47e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88811391bf00 (size 128):
  comm "syz-executor.0", pid 3696, jiffies 4295050188 (age 7.960s)
  hex dump (first 32 bytes):
    00 07 eb 85 ff ff ff ff 80 10 99 06 81 88 ff ff  ................
    01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff8235418c>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8235418c>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8235418c>] blk_iolatency_init+0x2c/0x250 block/blk-iolatency.c:765
    [<ffffffff8234a6fb>] blkcg_init_queue+0x11b/0x1f0 block/blk-cgroup.c:1302
    [<ffffffff82335da0>] __alloc_disk_node+0x130/0x240 block/genhd.c:1366
    [<ffffffff8232bbc9>] __blk_mq_alloc_disk+0x99/0xf0 block/blk-mq.c:3961
    [<ffffffff827d2103>] loop_add+0x203/0x3f0 drivers/block/loop.c:1978
    [<ffffffff827d5bc8>] loop_control_ioctl+0xc8/0x350 drivers/block/loop.c:2150
    [<ffffffff8160af8c>] vfs_ioctl fs/ioctl.c:51 [inline]
    [<ffffffff8160af8c>] __do_sys_ioctl fs/ioctl.c:870 [inline]
    [<ffffffff8160af8c>] __se_sys_ioctl fs/ioctl.c:856 [inline]
    [<ffffffff8160af8c>] __x64_sys_ioctl+0xfc/0x140 fs/ioctl.c:856
    [<ffffffff845e47e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff845e47e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd