================================================================== BUG: KASAN: stack-out-of-bounds in ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:626 [inline] BUG: KASAN: stack-out-of-bounds in ath9k_hif_usb_rx_cb+0xe11/0xf90 drivers/net/wireless/ath/ath9k/hif_usb.c:666 Write of size 8 at addr ffff8881db209a08 by task kworker/0:5/3077 CPU: 0 PID: 3077 Comm: kworker/0:5 Not tainted 5.7.0-rc5-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+0xef/0x16e lib/dump_stack.c:118 print_address_description.constprop.0.cold+0xd3/0x314 mm/kasan/report.c:382 __kasan_report.cold+0x37/0x92 mm/kasan/report.c:511 kasan_report+0x33/0x50 mm/kasan/common.c:625 ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:626 [inline] ath9k_hif_usb_rx_cb+0xe11/0xf90 drivers/net/wireless/ath/ath9k/hif_usb.c:666 __usb_hcd_giveback_urb+0x1f2/0x470 drivers/usb/core/hcd.c:1648 usb_hcd_giveback_urb+0x368/0x420 drivers/usb/core/hcd.c:1713 dummy_timer+0x125e/0x32b4 drivers/usb/gadget/udc/dummy_hcd.c:1966 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_is_held_type+0x1ce/0x290 kernel/locking/lockdep.c:4976 Code: c1 e9 03 0f b6 0c 11 48 89 fa 83 e2 07 83 c2 03 38 ca 7c 08 84 c9 0f 85 bc 00 00 00 83 ab 7c 08 00 00 01 75 2c ff 74 24 08 9d <48> 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 31 c0 eb a5 48 83 c4 RSP: 0018:ffff8881d4fb6d18 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: ffff8881d33118c0 RCX: 0000000000000000 RDX: 0000000000000007 RSI: ffffffff87111260 RDI: ffff8881d331213c RBP: ffff8881d33118c0 R08: 0000000000000001 R09: fffffbfff0fd11d1 R10: ffffffff87e88e87 R11: fffffbfff0fd11d0 R12: ffff8881d3312138 R13: ffffed103a662427 R14: ffff8881d3312208 R15: ffffffff87111260 lock_is_held include/linux/lockdep.h:406 [inline] rcu_preempt_sleep_check include/linux/rcupdate.h:272 [inline] ___might_sleep+0x1c5/0x2b0 kernel/sched/core.c:6766 slab_pre_alloc_hook mm/slab.h:567 [inline] slab_alloc_node mm/slub.c:2721 [inline] slab_alloc mm/slub.c:2805 [inline] __kmalloc_track_caller+0x242/0x330 mm/slub.c:4404 kvasprintf+0xb5/0x150 lib/kasprintf.c:25 kasprintf+0xbb/0xf0 lib/kasprintf.c:59 dvb_create_tsout_entity drivers/media/dvb-core/dvbdev.c:273 [inline] dvb_create_tsout_entity+0x273/0x450 drivers/media/dvb-core/dvbdev.c:252 dvb_create_media_entity drivers/media/dvb-core/dvbdev.c:310 [inline] dvb_register_media_device drivers/media/dvb-core/dvbdev.c:403 [inline] dvb_register_device+0x608/0x1340 drivers/media/dvb-core/dvbdev.c:522 dvb_dmxdev_init drivers/media/dvb-core/dmxdev.c:1435 [inline] dvb_dmxdev_init+0x2df/0x410 drivers/media/dvb-core/dmxdev.c:1414 dvb_usb_adapter_dvb_init+0x633/0x840 drivers/media/usb/dvb-usb/dvb-usb-dvb.c:192 dvb_usb_adapter_init drivers/media/usb/dvb-usb/dvb-usb-init.c:83 [inline] dvb_usb_init drivers/media/usb/dvb-usb/dvb-usb-init.c:173 [inline] dvb_usb_device_init.cold+0xa49/0x1146 drivers/media/usb/dvb-usb/dvb-usb-init.c:287 usb_probe_interface+0x310/0x800 drivers/usb/core/driver.c:374 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_set_configuration+0xed4/0x1850 drivers/usb/core/message.c:2032 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:2553 hub_port_connect drivers/usb/core/hub.c:5207 [inline] hub_port_connect_change drivers/usb/core/hub.c:5347 [inline] port_event drivers/usb/core/hub.c:5493 [inline] hub_event+0x226d/0x43c0 drivers/usb/core/hub.c:5575 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 page: page:ffffea00076c8240 refcount:1 mapcount:0 mapping:00000000a83bd0d7 index:0x0 flags: 0x200000000001000(reserved) raw: 0200000000001000 ffffea00076c8248 ffffea00076c8248 0000000000000000 raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881db209900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8881db209980: 00 f1 f1 f1 f1 f1 f1 00 00 00 00 00 00 00 00 00 >ffff8881db209a00: 00 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 ^ ffff8881db209a80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8881db209b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================