================================================================== 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+0xdf6/0xf70 drivers/net/wireless/ath/ath9k/hif_usb.c:666 Write of size 8 at addr ffff8881db309a28 by task syz-executor.4/405 CPU: 1 PID: 405 Comm: syz-executor.4 Not tainted 5.6.0-rc7-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+0xd3/0x314 mm/kasan/report.c:374 __kasan_report.cold+0x37/0x77 mm/kasan/report.c:506 kasan_report+0xe/0x20 mm/kasan/common.c:641 ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:626 [inline] ath9k_hif_usb_rx_cb+0xdf6/0xf70 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+0x1258/0x32ae drivers/usb/gadget/udc/dummy_hcd.c:1966 call_timer_fn+0x195/0x6f0 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x5f9/0x1500 kernel/time/timer.c:1786 __do_softirq+0x21e/0x950 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:1146 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 RIP: 0010:compound_head include/linux/page-flags.h:176 [inline] RIP: 0010:get_page include/linux/mm.h:995 [inline] RIP: 0010:copy_one_pte mm/memory.c:790 [inline] RIP: 0010:copy_pte_range mm/memory.c:841 [inline] RIP: 0010:copy_pmd_range mm/memory.c:892 [inline] RIP: 0010:copy_pud_range mm/memory.c:926 [inline] RIP: 0010:copy_p4d_range mm/memory.c:948 [inline] RIP: 0010:copy_page_range+0xfaf/0x2510 mm/memory.c:1010 Code: 85 c0 48 89 c3 0f 84 7b 01 00 00 e8 4b 0a e3 ff 4c 8d 6b 08 4c 89 e8 48 c1 e8 03 42 80 3c 30 00 0f 85 55 11 00 00 4c 8b 63 08 <31> ff 4c 89 e6 83 e6 01 48 89 74 24 30 e8 af 0b e3 ff 48 8b 74 24 RSP: 0018:ffff8881abad7828 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 1ffffd4000d74801 RBX: ffffea0006ba4000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815c4dd5 RDI: 0000000000000006 RBP: 80000001ae900007 R08: ffff8881d8cc4980 R09: ffffed103b198931 R10: ffffed103b198930 R11: ffff8881d8cc4987 R12: dead000000000100 R13: ffffea0006ba4008 R14: dffffc0000000000 R15: 0000000000000000 dup_mmap kernel/fork.c:604 [inline] dup_mm+0xa98/0x1180 kernel/fork.c:1360 copy_mm kernel/fork.c:1416 [inline] copy_process+0x26ef/0x6640 kernel/fork.c:2081 _do_fork+0x12d/0xfd0 kernel/fork.c:2430 __do_sys_clone kernel/fork.c:2585 [inline] __se_sys_clone kernel/fork.c:2566 [inline] __x64_sys_clone+0x182/0x210 kernel/fork.c:2566 do_syscall_64+0xb6/0x5a0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45ae5a Code: f7 d8 64 89 04 25 d4 02 00 00 64 4c 8b 0c 25 10 00 00 00 31 d2 4d 8d 91 d0 02 00 00 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 f5 00 00 00 85 c0 41 89 c5 0f 85 fc 00 00 RSP: 002b:00007ffdd9f09b30 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffdd9f09b30 RCX: 000000000045ae5a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffdd9f09b70 R08: 0000000000000001 R09: 000000000224b940 R10: 000000000224bc10 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffdd9f09bc0 The buggy address belongs to the page: page:ffffea00076cc240 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 flags: 0x200000000001000(reserved) raw: 0200000000001000 ffffea00076cc248 ffffea00076cc248 0000000000000000 raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881db309900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8881db309980: 00 00 00 00 00 f1 f1 f1 f1 f1 f1 00 00 00 00 00 >ffff8881db309a00: 00 00 00 00 00 f3 f3 f3 f3 00 00 00 00 00 00 00 ^ ffff8881db309a80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8881db309b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================