================================================================== BUG: KASAN: use-after-free in ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:636 [inline] BUG: KASAN: use-after-free in ath9k_hif_usb_rx_cb+0xdab/0x1020 drivers/net/wireless/ath/ath9k/hif_usb.c:680 Read of size 4 at addr ffff888145bc40b8 by task kworker/0:7/12581 CPU: 0 PID: 12581 Comm: kworker/0:7 Not tainted 5.10.0-rc3-syzkaller #0 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+0x107/0x163 lib/dump_stack.c:118 print_address_description.constprop.0.cold+0xae/0x4c8 mm/kasan/report.c:385 __kasan_report mm/kasan/report.c:545 [inline] kasan_report.cold+0x1f/0x37 mm/kasan/report.c:562 ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:636 [inline] ath9k_hif_usb_rx_cb+0xdab/0x1020 drivers/net/wireless/ath/ath9k/hif_usb.c:680 __usb_hcd_giveback_urb+0x2b0/0x5c0 drivers/usb/core/hcd.c:1657 usb_hcd_giveback_urb+0x367/0x410 drivers/usb/core/hcd.c:1728 dummy_timer+0x11f4/0x3280 drivers/usb/gadget/udc/dummy_hcd.c:1969 call_timer_fn+0x1a5/0x630 kernel/time/timer.c:1410 expire_timers kernel/time/timer.c:1455 [inline] __run_timers.part.0+0x67c/0xa10 kernel/time/timer.c:1747 __run_timers kernel/time/timer.c:1728 [inline] run_timer_softirq+0x80/0x120 kernel/time/timer.c:1760 __do_softirq+0x1b2/0x945 kernel/softirq.c:298 asm_call_irq_on_stack+0xf/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0x80/0xa0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x110/0x1a0 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x43/0xa0 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:631 RIP: 0010:console_unlock+0x7b8/0xb90 kernel/printk/printk.c:2509 Code: 80 b7 15 87 e8 89 96 fd ff e8 64 3c 00 00 31 ff 4c 89 ee e8 ba 03 16 00 4d 85 ed 0f 85 21 02 00 00 e8 fc 0a 16 00 ff 34 24 9d <8b> 5c 24 34 31 ff 89 de e8 7b 03 16 00 85 db 0f 84 e9 f9 ff ff e8 RSP: 0018:ffffc900111372e0 EFLAGS: 00000216 RAX: 0000000000029360 RBX: 0000000000000000 RCX: ffffc9000fd33000 RDX: 0000000000040000 RSI: ffffffff8128c114 RDI: ffffffff8128c33a RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffff898c84a7 R10: fffffbfff1319094 R11: 0000000000000000 R12: ffffffff82c3c840 R13: 0000000000000200 R14: dffffc0000000000 R15: ffffc90011137340 vprintk_emit+0x1da/0x4d0 kernel/printk/printk.c:2028 dev_vprintk_emit+0x2ea/0x32e drivers/base/core.c:4128 dev_printk_emit+0xba/0xf1 drivers/base/core.c:4139 __dev_printk+0xcf/0xf5 drivers/base/core.c:4151 _dev_warn+0xd7/0x109 drivers/base/core.c:4195 usb_parse_interface drivers/usb/core/config.c:593 [inline] usb_parse_configuration drivers/usb/core/config.c:795 [inline] usb_get_configuration.cold+0x319/0x148d drivers/usb/core/config.c:944 usb_enumerate_device drivers/usb/core/hub.c:2388 [inline] usb_new_device+0x42c/0x7a0 drivers/usb/core/hub.c:2524 hub_port_connect drivers/usb/core/hub.c:5223 [inline] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] port_event drivers/usb/core/hub.c:5509 [inline] hub_event+0x2348/0x42d0 drivers/usb/core/hub.c:5591 process_one_work+0x933/0x1520 kernel/workqueue.c:2272 worker_thread+0x64c/0x1120 kernel/workqueue.c:2418 kthread+0x38c/0x460 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 The buggy address belongs to the page: page:00000000937275ca refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x145bc4 flags: 0x200000000000000() raw: 0200000000000000 0000000000000000 dead000000000122 0000000000000000 raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff888145bc3f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff888145bc4000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff888145bc4080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff888145bc4100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff888145bc4180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================