general protection fault, probably for non-canonical address 0xdffffc00000001f6: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000fb0-0x0000000000000fb7] CPU: 3 PID: 33 Comm: ksoftirqd/3 Not tainted 5.18.0-syzkaller-00380-g4b0986a3613c-dirty #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:589 [inline] RIP: 0010:ath9k_hif_usb_rx_cb+0xcfd/0x10d0 drivers/net/wireless/ath/ath9k/hif_usb.c:687 Code: 48 c1 ea 03 80 3c 02 00 0f 85 cc 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5b 08 48 8d bb b4 0f 00 00 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 RSP: 0018:ffffc900007cf808 EFLAGS: 00010007 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000100 RDX: 00000000000001f6 RSI: ffffffff8526ff89 RDI: 0000000000000fb4 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff8526fcef R11: 0000000000004e00 R12: 0000000000000000 R13: ffff88804dc60000 R14: ffff88802c54f000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88802cd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055d696b46600 CR3: 00000000247b2000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __usb_hcd_giveback_urb+0x2b0/0x5c0 drivers/usb/core/hcd.c:1670 usb_hcd_giveback_urb+0x367/0x410 drivers/usb/core/hcd.c:1747 dummy_timer+0x11f9/0x32b0 drivers/usb/gadget/udc/dummy_hcd.c:1988 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421 expire_timers kernel/time/timer.c:1466 [inline] __run_timers.part.0+0x679/0xa80 kernel/time/timer.c:1737 __run_timers kernel/time/timer.c:1715 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1750 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 run_ksoftirqd kernel/softirq.c:921 [inline] run_ksoftirqd+0x2d/0x60 kernel/softirq.c:913 smpboot_thread_fn+0x645/0x9c0 kernel/smpboot.c:164 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:589 [inline] RIP: 0010:ath9k_hif_usb_rx_cb+0xcfd/0x10d0 drivers/net/wireless/ath/ath9k/hif_usb.c:687 Code: 48 c1 ea 03 80 3c 02 00 0f 85 cc 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5b 08 48 8d bb b4 0f 00 00 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 RSP: 0018:ffffc900007cf808 EFLAGS: 00010007 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000100 RDX: 00000000000001f6 RSI: ffffffff8526ff89 RDI: 0000000000000fb4 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff8526fcef R11: 0000000000004e00 R12: 0000000000000000 R13: ffff88804dc60000 R14: ffff88802c54f000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88802cd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055d696b46600 CR3: 00000000247b2000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 48 c1 ea 03 shr $0x3,%rdx 4: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 8: 0f 85 cc 03 00 00 jne 0x3da e: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 15: fc ff df 18: 48 8b 5b 08 mov 0x8(%rbx),%rbx 1c: 48 8d bb b4 0f 00 00 lea 0xfb4(%rbx),%rdi 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx <-- trapping instruction 2e: 48 89 f8 mov %rdi,%rax 31: 83 e0 07 and $0x7,%eax 34: 83 c0 03 add $0x3,%eax 37: 38 d0 cmp %dl,%al 39: 7c 09 jl 0x44 3b: 84 d2 test %dl,%dl 3d: 74 05 je 0x44 3f: e8 .byte 0xe8