usb 1-1: config 54 has no interface number 0 usb 1-1: New USB device found, idVendor=04fa, idProduct=2490, bcdDevice=2c.d2 usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 ================================================================== BUG: KASAN: use-after-free in ds_probe+0x5ff/0x750 drivers/w1/masters/ds2490.c:1019 Read of size 1 at addr ffff8881c5d511a2 by task kworker/1:4/5640 CPU: 1 PID: 5640 Comm: kworker/1:4 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 4668: 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:547 [inline] call_modprobe kernel/kmod.c:80 [inline] __request_module+0x306/0xaec kernel/kmod.c:171 xt_request_find_table_lock+0x95/0xd0 net/netfilter/x_tables.c:1262 get_info+0x12f/0x530 net/ipv6/netfilter/ip6_tables.c:984 do_ip6t_get_ctl+0x14e/0x8b0 net/ipv6/netfilter/ip6_tables.c:1708 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 Freed by task 4668: 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 call_usermodehelper_freeinfo kernel/umh.c:46 [inline] call_usermodehelper_exec+0x238/0x4d0 kernel/umh.c:597 call_modprobe kernel/kmod.c:99 [inline] __request_module+0x43e/0xaec kernel/kmod.c:171 xt_request_find_table_lock+0x95/0xd0 net/netfilter/x_tables.c:1262 get_info+0x12f/0x530 net/ipv6/netfilter/ip6_tables.c:984 do_ip6t_get_ctl+0x14e/0x8b0 net/ipv6/netfilter/ip6_tables.c:1708 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 ffff8881c5d51180 which belongs to the cache kmalloc-64 of size 64 The buggy address is located 34 bytes inside of 64-byte region [ffff8881c5d51180, ffff8881c5d511c0) The buggy address belongs to the page: page:ffffea0007175440 count:1 mapcount:0 mapping:ffff8881dac03600 index:0xffff8881c5d51ba0 flags: 0x200000000000200(slab) raw: 0200000000000200 ffffea000742bd80 0000000f0000000f ffff8881dac03600 raw: ffff8881c5d51ba0 00000000802a0004 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881c5d51080: 00 00 00 fc fc fc fc fc 00 00 00 00 00 00 00 fc ffff8881c5d51100: fc fc fc fc 00 00 00 00 00 00 fc fc fc fc fc fc >ffff8881c5d51180: fb fb fb fb fb fb fb fb fc fc fc fc fb fb fb fb ^ ffff8881c5d51200: fb fb fb fb fc fc fc fc fb fb fb fb fb fb fb fb ffff8881c5d51280: fc fc fc fc fb fb fb fb fb fb fb fb fc fc fc fc ==================================================================