================================================================== BUG: KASAN: use-after-free in memcpy include/linux/string.h:399 [inline] BUG: KASAN: use-after-free in ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:553 [inline] BUG: KASAN: use-after-free in ath9k_hif_usb_rx_cb+0x3a8/0xf80 drivers/net/wireless/ath/ath9k/hif_usb.c:671 Read of size 49126 at addr ffff8881cc588000 by task swapper/1/0 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.9.0-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+0x107/0x163 lib/dump_stack.c:118 print_address_description.constprop.0+0x1c/0x210 mm/kasan/report.c:385 __kasan_report mm/kasan/report.c:545 [inline] kasan_report.cold+0x37/0x7c mm/kasan/report.c:562 check_memory_region_inline mm/kasan/generic.c:186 [inline] check_memory_region+0xf4/0x1c0 mm/kasan/generic.c:192 memcpy+0x20/0x60 mm/kasan/common.c:105 memcpy include/linux/string.h:399 [inline] ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:553 [inline] ath9k_hif_usb_rx_cb+0x3a8/0xf80 drivers/net/wireless/ath/ath9k/hif_usb.c:671 __usb_hcd_giveback_urb+0x32d/0x560 drivers/usb/core/hcd.c:1650 usb_hcd_giveback_urb+0x367/0x410 drivers/usb/core/hcd.c:1716 dummy_timer+0x11f2/0x3240 drivers/usb/gadget/udc/dummy_hcd.c:1967 call_timer_fn+0x1a5/0x630 kernel/time/timer.c:1415 expire_timers kernel/time/timer.c:1460 [inline] __run_timers.part.0+0x67c/0xa10 kernel/time/timer.c:1757 __run_timers kernel/time/timer.c:1738 [inline] run_timer_softirq+0x80/0x120 kernel/time/timer.c:1770 __do_softirq+0x1b1/0x8d1 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:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline] RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:79 [inline] RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:169 [inline] RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:112 [inline] RIP: 0010:acpi_idle_do_entry+0x1c9/0x250 drivers/acpi/processor_idle.c:517 Code: 4d ce 83 fb 84 db 75 ac e8 d4 d5 83 fb e8 ff 69 89 fb e9 0c 00 00 00 e8 c5 d5 83 fb 0f 00 2d 9e ac 69 00 e8 b9 d5 83 fb fb f4 <9c> 5b 81 e3 00 02 00 00 fa 31 ff 48 89 de e8 74 ce 83 fb 48 85 db RSP: 0018:ffff8881da257d18 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 1ffffffff103af21 RDX: ffff8881da23b280 RSI: ffffffff85bb48e7 RDI: ffffffff85bb48d1 RBP: ffff8881d8d4a064 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001 R13: ffff8881d8d4a000 R14: ffff8881d8d4a064 R15: ffff8881d6f18804 acpi_idle_enter+0x337/0x490 drivers/acpi/processor_idle.c:648 cpuidle_enter_state+0x1a2/0xa80 drivers/cpuidle/cpuidle.c:237 cpuidle_enter+0x4a/0xa0 drivers/cpuidle/cpuidle.c:351 call_cpuidle kernel/sched/idle.c:132 [inline] cpuidle_idle_call kernel/sched/idle.c:213 [inline] do_idle+0x3d5/0x580 kernel/sched/idle.c:273 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:369 start_secondary+0x25b/0x320 arch/x86/kernel/smpboot.c:266 secondary_startup_64_no_verify+0xb8/0xbb The buggy address belongs to the page: page:00000000ab513267 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1cc588 head:00000000ab513267 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x200000000010000(head) raw: 0200000000010000 dead000000000100 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881cc58ff00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8881cc58ff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8881cc590000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8881cc590080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881cc590100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================