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BUG: KASAN: slab-out-of-bounds in ds_probe+0x5ff/0x750 drivers/w1/masters/ds2490.c:1019
Read of size 1 at addr ffff8881cefe9fe2 by task kworker/0:4/5605

CPU: 0 PID: 5605 Comm: kworker/0:4 Not tainted 5.1.0-rc3+ #8
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0xca/0x13e lib/dump_stack.c:113
 print_address_description+0x67/0x231 mm/kasan/report.c:187
 kasan_report.cold+0x1a/0x35 mm/kasan/report.c:317
 ds_probe+0x5ff/0x750 drivers/w1/masters/ds2490.c:1019
 usb_probe_interface+0x30d/0x7b0 drivers/usb/core/driver.c:361
 really_probe+0x296/0x680 drivers/base/dd.c:509
 driver_probe_device+0xf9/0x200 drivers/base/dd.c:671
 __device_attach_driver+0x1c4/0x230 drivers/base/dd.c:778
 bus_for_each_drv+0x15e/0x1e0 drivers/base/bus.c:454
 __device_attach+0x21e/0x360 drivers/base/dd.c:844
 bus_probe_device+0x1ec/0x2a0 drivers/base/bus.c:514
 device_add+0xaf4/0x1700 drivers/base/core.c:2106
 usb_set_configuration+0xdf2/0x1670 drivers/usb/core/message.c:2023
 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210
 usb_probe_device+0xa8/0x110 drivers/usb/core/driver.c:266
 really_probe+0x296/0x680 drivers/base/dd.c:509
 driver_probe_device+0xf9/0x200 drivers/base/dd.c:671
 __device_attach_driver+0x1c4/0x230 drivers/base/dd.c:778
 bus_for_each_drv+0x15e/0x1e0 drivers/base/bus.c:454
 __device_attach+0x21e/0x360 drivers/base/dd.c:844
 bus_probe_device+0x1ec/0x2a0 drivers/base/bus.c:514
 device_add+0xaf4/0x1700 drivers/base/core.c:2106
 usb_new_device.cold+0x8b8/0x1030 drivers/usb/core/hub.c:2534
 hub_port_connect drivers/usb/core/hub.c:5089 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5204 [inline]
 port_event drivers/usb/core/hub.c:5350 [inline]
 hub_event+0x1ac9/0x35a0 drivers/usb/core/hub.c:5432
 process_one_work+0x90a/0x1580 kernel/workqueue.c:2269
 worker_thread+0x96/0xe20 kernel/workqueue.c:2415
 kthread+0x30e/0x420 kernel/kthread.c:253
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352

Allocated by task 5605:
 set_track mm/kasan/common.c:87 [inline]
 __kasan_kmalloc mm/kasan/common.c:497 [inline]
 __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:470
 kmalloc include/linux/slab.h:552 [inline]
 kzalloc include/linux/slab.h:742 [inline]
 usb_parse_configuration drivers/usb/core/config.c:710 [inline]
 usb_get_configuration+0xc42/0x3070 drivers/usb/core/config.c:882
 usb_enumerate_device drivers/usb/core/hub.c:2367 [inline]
 usb_new_device+0x8d3/0xd50 drivers/usb/core/hub.c:2503
 hub_port_connect drivers/usb/core/hub.c:5089 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5204 [inline]
 port_event drivers/usb/core/hub.c:5350 [inline]
 hub_event+0x1ac9/0x35a0 drivers/usb/core/hub.c:5432
 process_one_work+0x90a/0x1580 kernel/workqueue.c:2269
 worker_thread+0x96/0xe20 kernel/workqueue.c:2415
 kthread+0x30e/0x420 kernel/kthread.c:253
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352

Freed by task 4656:
 set_track mm/kasan/common.c:87 [inline]
 __kasan_slab_free+0x130/0x180 mm/kasan/common.c:459
 slab_free_hook mm/slub.c:1429 [inline]
 slab_free_freelist_hook mm/slub.c:1456 [inline]
 slab_free mm/slub.c:3003 [inline]
 kfree+0xd7/0x290 mm/slub.c:3958
 __vunmap+0x330/0x420 mm/vmalloc.c:1543
 __vfree+0x3c/0xd0 mm/vmalloc.c:1584
 vfree+0x5a/0x90 mm/vmalloc.c:1614
 copy_entries_to_user net/ipv6/netfilter/ip6_tables.c:886 [inline]
 get_entries net/ipv6/netfilter/ip6_tables.c:1044 [inline]
 do_ip6t_get_ctl+0x6c9/0x8b0 net/ipv6/netfilter/ip6_tables.c:1712
 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline]
 nf_getsockopt+0x78/0xd0 net/netfilter/nf_sockopt.c:122
 ipv6_getsockopt net/ipv6/ipv6_sockglue.c:1402 [inline]
 ipv6_getsockopt+0x1f2/0x270 net/ipv6/ipv6_sockglue.c:1382
 tcp_getsockopt net/ipv4/tcp.c:3640 [inline]
 tcp_getsockopt+0x8c/0xd0 net/ipv4/tcp.c:3634
 __sys_getsockopt+0x13a/0x210 net/socket.c:2083
 __do_sys_getsockopt net/socket.c:2094 [inline]
 __se_sys_getsockopt net/socket.c:2091 [inline]
 __x64_sys_getsockopt+0xba/0x150 net/socket.c:2091
 do_syscall_64+0xbd/0x500 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

The buggy address belongs to the object at ffff8881cefe9f60
 which belongs to the cache kmalloc-64 of size 64
The buggy address is located 66 bytes to the right of
 64-byte region [ffff8881cefe9f60, ffff8881cefe9fa0)
The buggy address belongs to the page:
page:ffffea00073bfa40 count:1 mapcount:0 mapping:ffff8881dac03600 index:0x0
flags: 0x200000000000200(slab)
raw: 0200000000000200 ffffea00072feec0 0000001600000016 ffff8881dac03600
raw: 0000000000000000 00000000002a002a 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881cefe9e80: fc fc fc fc fb fb fb fb fb fb fb fb fc fc fc fc
 ffff8881cefe9f00: fb fb fb fb fb fb fb fb fc fc fc fc 00 00 00 00
>ffff8881cefe9f80: 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                                       ^
 ffff8881cefea000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881cefea080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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