syzbot has found a reproducer for the following issue on: HEAD commit: 313da01a usb: misc: sisusbvga: Move static const tables ou.. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing console output: https://syzkaller.appspot.com/x/log.txt?x=15d1cde7100000 kernel config: https://syzkaller.appspot.com/x/.config?x=999be4eb2478ffa5 dashboard link: https://syzkaller.appspot.com/bug?extid=c6dde1f690b60e0b9fbe compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11edde20900000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=178d2680900000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+c6dde1f690b60e0b9fbe@xxxxxxxxxxxxxxxxxxxxxxxxx general protection fault, probably for non-canonical address 0xdffffc00000001f3: 0000 [#1] SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000f98-0x0000000000000f9f] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.8.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:580 [inline] RIP: 0010:ath9k_hif_usb_rx_cb+0xc4d/0xf80 drivers/net/wireless/ath/ath9k/hif_usb.c:671 Code: 48 c1 ea 03 80 3c 02 00 0f 85 0e 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5b 08 48 8d bb 9c 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:ffff8881db309920 EFLAGS: 00010007 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff82e1fa3e RDX: 00000000000001f3 RSI: ffffffff82e1fcb9 RDI: 0000000000000f9c RBP: dffffc0000000000 R08: 0000000000000000 R09: ffff8881d8fc442b R10: 0000000000004e00 R11: 1ffffffff123bba9 R12: 0000000000000000 R13: 0000000000000000 R14: ffff8881d8fc4000 R15: ffff8881c8b5cf40 FS: 0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000556e7bf7d8d8 CR3: 00000001c3194000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> __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 </IRQ> __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+0x49/0xc0 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 60 c8 8f fb e8 5b c8 8f fb e8 a6 53 95 fb e9 0c 00 00 00 e8 4c c8 8f fb 0f 00 2d c5 e5 74 00 e8 40 c8 8f fb fb f4 <fa> e8 98 4d 95 fb 5b e9 32 c8 8f fb 48 89 df e8 fa 72 b9 fb eb ab RSP: 0018:ffff8881da22fc80 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff8881da213200 RSI: ffffffff85afd9a0 RDI: ffffffff85afd98a RBP: ffff8881d8cca864 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff8881d8cca864 R13: 1ffff1103b445f99 R14: ffff8881d8cca865 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:235 cpuidle_enter+0x4a/0xa0 drivers/cpuidle/cpuidle.c:346 call_cpuidle kernel/sched/idle.c:126 [inline] cpuidle_idle_call kernel/sched/idle.c:214 [inline] do_idle+0x3d6/0x5a0 kernel/sched/idle.c:276 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:372 start_secondary+0x2d2/0x3c0 arch/x86/kernel/smpboot.c:268 secondary_startup_64+0xb6/0xc0 arch/x86/kernel/head_64.S:243 Modules linked in: ---[ end trace e2f028e5d5706562 ]--- RIP: 0010:ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:580 [inline] RIP: 0010:ath9k_hif_usb_rx_cb+0xc4d/0xf80 drivers/net/wireless/ath/ath9k/hif_usb.c:671 Code: 48 c1 ea 03 80 3c 02 00 0f 85 0e 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5b 08 48 8d bb 9c 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:ffff8881db309920 EFLAGS: 00010007 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff82e1fa3e RDX: 00000000000001f3 RSI: ffffffff82e1fcb9 RDI: 0000000000000f9c RBP: dffffc0000000000 R08: 0000000000000000 R09: ffff8881d8fc442b R10: 0000000000004e00 R11: 1ffffffff123bba9 R12: 0000000000000000 R13: 0000000000000000 R14: ffff8881d8fc4000 R15: ffff8881c8b5cf40 FS: 0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000556e7bf7d8d8 CR3: 00000001c3194000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
