================================================================== BUG: KASAN: use-after-free in htc_process_conn_rsp drivers/net/wireless/ath/ath9k/htc_hst.c:131 [inline] BUG: KASAN: use-after-free in ath9k_htc_rx_msg+0xa25/0xaf0 drivers/net/wireless/ath/ath9k/htc_hst.c:443 Write of size 2 at addr ffff8881cb64f490 by task syz-executor.3/378 CPU: 0 PID: 378 Comm: syz-executor.3 Not tainted 5.7.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xef/0x16e lib/dump_stack.c:118 print_address_description.constprop.0.cold+0xd3/0x415 mm/kasan/report.c:382 __kasan_report.cold+0x37/0x7d mm/kasan/report.c:511 kasan_report+0x33/0x50 mm/kasan/common.c:625 htc_process_conn_rsp drivers/net/wireless/ath/ath9k/htc_hst.c:131 [inline] ath9k_htc_rx_msg+0xa25/0xaf0 drivers/net/wireless/ath/ath9k/htc_hst.c:443 ath9k_hif_usb_reg_in_cb+0x1c0/0x630 drivers/net/wireless/ath/ath9k/hif_usb.c:718 __usb_hcd_giveback_urb+0x29a/0x550 drivers/usb/core/hcd.c:1650 usb_hcd_giveback_urb+0x368/0x420 drivers/usb/core/hcd.c:1716 dummy_timer+0x125e/0x32b4 drivers/usb/gadget/udc/dummy_hcd.c:1967 call_timer_fn+0x1ac/0x700 kernel/time/timer.c:1405 expire_timers kernel/time/timer.c:1450 [inline] __run_timers kernel/time/timer.c:1774 [inline] __run_timers kernel/time/timer.c:1741 [inline] run_timer_softirq+0x5f9/0x1500 kernel/time/timer.c:1787 __do_softirq+0x21e/0x9aa kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x178/0x1a0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:546 [inline] smp_apic_timer_interrupt+0x141/0x540 arch/x86/kernel/apic/apic.c:1140 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 RIP: 0010:lock_acquire+0x1d1/0x7c0 kernel/locking/lockdep.c:4906 Code: 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 63 05 00 00 83 ab 7c 08 00 00 01 0f 85 02 04 00 00 ff 34 24 9d <48> b8 00 00 00 00 00 fc ff df 48 03 44 24 08 48 c7 00 00 00 00 00 RSP: 0018:ffff8881adab7ca8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000007 RBX: ffff8881cfc918c0 RCX: a65b54658cf8bd51 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8881cfc9213c RBP: 0000000000000000 R08: 0000000000000001 R09: fffffbfff126c8c2 R10: ffffffff8936460f R11: fffffbfff126c8c1 R12: 0000000000000001 R13: ffff8881ccd573e8 R14: 0000000000000000 R15: 0000000000000000 __might_fault mm/memory.c:4814 [inline] __might_fault+0x152/0x1d0 mm/memory.c:4799 _copy_from_user+0x29/0x1a0 lib/usercopy.c:11 copy_from_user include/linux/uaccess.h:144 [inline] get_timespec64+0x75/0x190 kernel/time/time.c:787 __do_sys_nanosleep kernel/time/hrtimer.c:1958 [inline] __se_sys_nanosleep kernel/time/hrtimer.c:1953 [inline] __x64_sys_nanosleep+0xaa/0x260 kernel/time/hrtimer.c:1953 do_syscall_64+0xb6/0x5a0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x45af70 Code: c0 5b 5d c3 66 0f 1f 44 00 00 8b 04 24 48 83 c4 18 5b 5d c3 66 0f 1f 44 00 00 83 3d e1 ee 84 00 00 75 14 b8 23 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 d4 d1 fb ff c3 48 83 ec 08 e8 8a 46 00 00 RSP: 002b:00007ffcf45a9828 EFLAGS: 00000246 ORIG_RAX: 0000000000000023 RAX: ffffffffffffffda RBX: 000000000002af96 RCX: 000000000045af70 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007ffcf45a9830 RBP: 0000000000000073 R08: 0000000000000001 R09: 0000000002403940 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffcf45a9880 R14: 000000000002a7cb R15: 00007ffcf45a9890 Allocated by task 5: save_stack+0x1b/0x40 mm/kasan/common.c:49 set_track mm/kasan/common.c:57 [inline] __kasan_kmalloc mm/kasan/common.c:495 [inline] __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:468 kmalloc include/linux/slab.h:555 [inline] kzalloc include/linux/slab.h:669 [inline] usb_create_ep_devs+0x49/0x2a0 drivers/usb/core/endpoint.c:183 create_intf_ep_devs+0x15a/0x230 drivers/usb/core/message.c:1106 usb_set_configuration+0xef6/0x1850 drivers/usb/core/message.c:2038 usb_generic_driver_probe+0x9d/0xe0 drivers/usb/core/generic.c:241 usb_probe_device+0xd9/0x230 drivers/usb/core/driver.c:272 really_probe+0x290/0xac0 drivers/base/dd.c:520 driver_probe_device+0x223/0x350 drivers/base/dd.c:697 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:804 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:431 __device_attach+0x21a/0x390 drivers/base/dd.c:870 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491 device_add+0x1367/0x1c40 drivers/base/core.c:2538 usb_new_device.cold+0x552/0xf6e drivers/usb/core/hub.c:2554 hub_port_connect drivers/usb/core/hub.c:5208 [inline] hub_port_connect_change drivers/usb/core/hub.c:5348 [inline] port_event drivers/usb/core/hub.c:5494 [inline] hub_event+0x226d/0x43c0 drivers/usb/core/hub.c:5576 process_one_work+0x965/0x1630 kernel/workqueue.c:2268 process_scheduled_works kernel/workqueue.c:2330 [inline] worker_thread+0x7ab/0xe20 kernel/workqueue.c:2416 kthread+0x326/0x430 kernel/kthread.c:268 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:351 Freed by task 3090: save_stack+0x1b/0x40 mm/kasan/common.c:49 set_track mm/kasan/common.c:57 [inline] kasan_set_free_info mm/kasan/common.c:317 [inline] __kasan_slab_free+0x117/0x160 mm/kasan/common.c:456 slab_free_hook mm/slub.c:1455 [inline] slab_free_freelist_hook mm/slub.c:1488 [inline] slab_free mm/slub.c:3045 [inline] kfree+0xd5/0x300 mm/slub.c:4026 device_release+0x71/0x200 drivers/base/core.c:1375 kobject_cleanup lib/kobject.c:693 [inline] kobject_release lib/kobject.c:722 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x256/0x550 lib/kobject.c:739 put_device drivers/base/core.c:2637 [inline] device_unregister+0x34/0xc0 drivers/base/core.c:2748 usb_remove_ep_devs+0x3e/0x80 drivers/usb/core/endpoint.c:215 remove_intf_ep_devs+0x108/0x1d0 drivers/usb/core/message.c:1120 usb_disable_device+0x235/0x790 drivers/usb/core/message.c:1244 usb_disconnect+0x293/0x900 drivers/usb/core/hub.c:2217 hub_port_connect drivers/usb/core/hub.c:5059 [inline] hub_port_connect_change drivers/usb/core/hub.c:5348 [inline] port_event drivers/usb/core/hub.c:5494 [inline] hub_event+0x1abf/0x43c0 drivers/usb/core/hub.c:5576 process_one_work+0x965/0x1630 kernel/workqueue.c:2268 worker_thread+0x96/0xe20 kernel/workqueue.c:2414 kthread+0x326/0x430 kernel/kthread.c:268 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:351 The buggy address belongs to the object at ffff8881cb64f000 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 1168 bytes inside of 2048-byte region [ffff8881cb64f000, ffff8881cb64f800) The buggy address belongs to the page: page:ffffea00072d9200 refcount:1 mapcount:0 mapping:00000000aabd9449 index:0x0 head:ffffea00072d9200 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x200000000010200(slab|head) raw: 0200000000010200 dead000000000100 dead000000000122 ffff8881da00c000 raw: 0000000000000000 0000000000080008 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881cb64f380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881cb64f400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8881cb64f480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8881cb64f500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881cb64f580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================