================================================================== BUG: KASAN: slab-out-of-bounds in ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:627 [inline] BUG: KASAN: slab-out-of-bounds in ath9k_hif_usb_rx_cb+0xd7d/0xf80 drivers/net/wireless/ath/ath9k/hif_usb.c:671 Read of size 4 at addr ffff8881c7bdc090 by task swapper/1/0 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.8.0-rc1-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+0xf6/0x16e lib/dump_stack.c:118 print_address_description.constprop.0+0x1a/0x210 mm/kasan/report.c:383 __kasan_report mm/kasan/report.c:513 [inline] kasan_report.cold+0x37/0x7c mm/kasan/report.c:530 ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:627 [inline] ath9k_hif_usb_rx_cb+0xd7d/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+0x1ac/0x6e0 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers.part.0+0x54c/0x9e0 kernel/time/timer.c:1773 __run_timers kernel/time/timer.c:1745 [inline] run_timer_softirq+0x80/0x120 kernel/time/timer.c:1786 __do_softirq+0x222/0x95b kernel/softirq.c:292 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0xed/0x140 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:387 [inline] __irq_exit_rcu kernel/softirq.c:417 [inline] irq_exit_rcu+0x150/0x1f0 kernel/softirq.c:429 sysvec_apic_timer_interrupt+0x115/0x1c0 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:596 RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:49 [inline] RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:89 [inline] RIP: 0010:acpi_safe_halt+0x72/0x90 drivers/acpi/processor_idle.c:112 Code: 74 06 5b e9 c0 91 8f fb e8 bb 91 8f fb e8 d6 1c 95 fb e9 0c 00 00 00 e8 ac 91 8f fb 0f 00 2d 65 f3 74 00 e8 a0 91 8f fb fb f4 e8 c8 16 95 fb 5b e9 92 91 8f fb 48 89 df e8 da 37 b9 fb eb ab RSP: 0018:ffff8881da22fc80 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 1ffffffff1014c62 RDX: ffff8881da213200 RSI: ffffffff85afbd00 RDI: ffff8881da213a38 RBP: ffff8881da393864 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881da393864 R13: 1ffff1103b445f99 R14: ffff8881da393865 R15: 0000000000000001 acpi_idle_do_entry+0x15c/0x1b0 drivers/acpi/processor_idle.c:525 acpi_idle_enter+0x3f0/0xa50 drivers/acpi/processor_idle.c:651 cpuidle_enter_state+0xff/0x870 drivers/cpuidle/cpuidle.c:234 cpuidle_enter+0x4a/0xa0 drivers/cpuidle/cpuidle.c:345 call_cpuidle kernel/sched/idle.c:117 [inline] cpuidle_idle_call kernel/sched/idle.c:207 [inline] do_idle+0x3d6/0x530 kernel/sched/idle.c:269 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:365 start_secondary+0x2d2/0x3c0 arch/x86/kernel/smpboot.c:268 secondary_startup_64+0xb6/0xc0 arch/x86/kernel/head_64.S:243 Allocated by task 0: (stack is not available) Freed by task 0: (stack is not available) The buggy address belongs to the object at ffff8881c7bdc000 which belongs to the cache kmalloc-4k of size 4096 The buggy address is located 144 bytes inside of 4096-byte region [ffff8881c7bdc000, ffff8881c7bdd000) The buggy address belongs to the page: page:ffffea00071ef600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 head:ffffea00071ef600 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x200000000010200(slab|head) raw: 0200000000010200 dead000000000100 dead000000000122 ffff8881da00c280 raw: 0000000000000000 0000000080040004 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881c7bdbf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8881c7bdc000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff8881c7bdc080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8881c7bdc100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8881c7bdc180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================