Hello, syzbot found the following crash on: HEAD commit: f8f02d5c USB: OTG: rename product list of devices 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=17205bae100000 kernel config: https://syzkaller.appspot.com/x/.config?x=f1981539b6376b73 dashboard link: https://syzkaller.appspot.com/bug?extid=743547b2a7fd655ffb6d compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11eab949100000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10dc82ed100000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+743547b2a7fd655ffb6d@xxxxxxxxxxxxxxxxxxxxxxxxx INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. CPU: 0 PID: 323 Comm: systemd-udevd Not tainted 5.8.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xf6/0x16e lib/dump_stack.c:118 assign_lock_key kernel/locking/lockdep.c:894 [inline] register_lock_class+0x1228/0x16d0 kernel/locking/lockdep.c:1206 __lock_acquire+0x101/0x6270 kernel/locking/lockdep.c:4259 lock_acquire+0x18b/0x7c0 kernel/locking/lockdep.c:4959 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x32/0x50 kernel/locking/spinlock.c:159 skb_queue_tail+0x27/0x180 net/core/skbuff.c:3143 ath9k_htc_txep+0x287/0x400 drivers/net/wireless/ath/ath9k/htc_drv_txrx.c:707 ath9k_htc_txcompletion_cb+0x1a1/0x2b0 drivers/net/wireless/ath/ath9k/htc_hst.c:346 hif_usb_regout_cb+0x115/0x1c0 drivers/net/wireless/ath/ath9k/hif_usb.c:90 __usb_hcd_giveback_urb+0x29a/0x550 drivers/usb/core/hcd.c:1650 usb_hcd_giveback_urb+0x368/0x420 drivers/usb/core/hcd.c:1716 dummy_timer+0x125e/0x32b4 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 kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x5e5/0x14c0 kernel/time/timer.c:1786 __do_softirq+0x21e/0x996 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+0x109/0x140 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+0x16f/0x1a0 kernel/softirq.c:429 sysvec_apic_timer_interrupt+0xd3/0x1b0 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:596 RIP: 0010:lock_release+0x3c9/0x710 kernel/locking/lockdep.c:4967 Code: 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 bb 02 00 00 83 ad 84 08 00 00 01 0f 85 4a 01 00 00 ff 34 24 9d <48> b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00 00 00 00 c7 43 RSP: 0018:ffff8881cd71f8f0 EFLAGS: 00000246 RAX: 0000000000000007 RBX: 1ffff11039ae3f21 RCX: 1ffff11039a85d8f RDX: 0000000000000000 RSI: 1ffff11039a85d96 RDI: ffff8881cd42ec84 RBP: ffff8881cd42e400 R08: ffff8881cd42e400 R09: fffffbfff1014d0a R10: ffffffff880a684f R11: fffffbfff1014d09 R12: f002853324f3be8d R13: ffffffff816b05ef R14: ffff8881cd42ec80 R15: 0000000000000002 zap_pte_range mm/memory.c:1089 [inline] zap_pmd_range mm/memory.c:1193 [inline] zap_pud_range mm/memory.c:1222 [inline] zap_p4d_range mm/memory.c:1243 [inline] unmap_page_range+0xe2f/0x1fc0 mm/memory.c:1264 unmap_single_vma+0x196/0x300 mm/memory.c:1309 unmap_vmas+0x174/0x2f0 mm/memory.c:1341 exit_mmap+0x278/0x4d0 mm/mmap.c:3150 __mmput kernel/fork.c:1093 [inline] mmput+0xce/0x3d0 kernel/fork.c:1114 exit_mm kernel/exit.c:482 [inline] do_exit+0xaaf/0x2cb0 kernel/exit.c:792 do_group_exit+0x125/0x340 kernel/exit.c:903 __do_sys_exit_group kernel/exit.c:914 [inline] __se_sys_exit_group kernel/exit.c:912 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:912 do_syscall_64+0x50/0x90 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f7ad8c2a618 Code: Bad RIP value. RSP: 002b:00007ffd37c486a8 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007ffd37c48770 RCX: 00007f7ad8c2a618 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00007ffd37c48820 R08: 00000000000000e7 R09: fffffffffffffe50 R10: 00000000ffffffff R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000003 R15: 000000000000000e general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 PID: 323 Comm: systemd-udevd Not tainted 5.8.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__skb_insert include/linux/skbuff.h:1895 [inline] RIP: 0010:__skb_queue_before include/linux/skbuff.h:2001 [inline] RIP: 0010:__skb_queue_tail include/linux/skbuff.h:2034 [inline] RIP: 0010:skb_queue_tail+0xbb/0x180 net/core/skbuff.c:3144 Code: 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 82 00 00 00 4c 89 e2 48 89 6b 08 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 75 55 48 8d 7b 10 49 89 2c 24 48 b8 00 00 00 00 00 fc RSP: 0018:ffff8881db2099f0 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: ffff8881cd7ab590 RCX: ffffffff81274370 RDX: 0000000000000000 RSI: 0000000000000046 RDI: ffff8881cfdc1148 RBP: ffff8881cfdc1140 R08: 0000000000000004 R09: ffffed103b64132d R10: 0000000000000003 R11: ffffed103b64132c R12: 0000000000000000 R13: ffff8881cd7ab598 R14: ffff8881cd7ab5a8 R15: ffffffff82dcf820 FS: 00007f7ad9dda8c0(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000559104643e60 CR3: 00000001ce0ed000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> ath9k_htc_txep+0x287/0x400 drivers/net/wireless/ath/ath9k/htc_drv_txrx.c:707 ath9k_htc_txcompletion_cb+0x1a1/0x2b0 drivers/net/wireless/ath/ath9k/htc_hst.c:346 hif_usb_regout_cb+0x115/0x1c0 drivers/net/wireless/ath/ath9k/hif_usb.c:90 __usb_hcd_giveback_urb+0x29a/0x550 drivers/usb/core/hcd.c:1650 usb_hcd_giveback_urb+0x368/0x420 drivers/usb/core/hcd.c:1716 dummy_timer+0x125e/0x32b4 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 kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x5e5/0x14c0 kernel/time/timer.c:1786 __do_softirq+0x21e/0x996 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+0x109/0x140 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+0x16f/0x1a0 kernel/softirq.c:429 sysvec_apic_timer_interrupt+0xd3/0x1b0 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:596 RIP: 0010:lock_release+0x3c9/0x710 kernel/locking/lockdep.c:4967 Code: 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 bb 02 00 00 83 ad 84 08 00 00 01 0f 85 4a 01 00 00 ff 34 24 9d <48> b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00 00 00 00 c7 43 RSP: 0018:ffff8881cd71f8f0 EFLAGS: 00000246 RAX: 0000000000000007 RBX: 1ffff11039ae3f21 RCX: 1ffff11039a85d8f RDX: 0000000000000000 RSI: 1ffff11039a85d96 RDI: ffff8881cd42ec84 RBP: ffff8881cd42e400 R08: ffff8881cd42e400 R09: fffffbfff1014d0a R10: ffffffff880a684f R11: fffffbfff1014d09 R12: f002853324f3be8d R13: ffffffff816b05ef R14: ffff8881cd42ec80 R15: 0000000000000002 zap_pte_range mm/memory.c:1089 [inline] zap_pmd_range mm/memory.c:1193 [inline] zap_pud_range mm/memory.c:1222 [inline] zap_p4d_range mm/memory.c:1243 [inline] unmap_page_range+0xe2f/0x1fc0 mm/memory.c:1264 unmap_single_vma+0x196/0x300 mm/memory.c:1309 unmap_vmas+0x174/0x2f0 mm/memory.c:1341 exit_mmap+0x278/0x4d0 mm/mmap.c:3150 __mmput kernel/fork.c:1093 [inline] mmput+0xce/0x3d0 kernel/fork.c:1114 exit_mm kernel/exit.c:482 [inline] do_exit+0xaaf/0x2cb0 kernel/exit.c:792 do_group_exit+0x125/0x340 kernel/exit.c:903 __do_sys_exit_group kernel/exit.c:914 [inline] __se_sys_exit_group kernel/exit.c:912 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:912 do_syscall_64+0x50/0x90 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f7ad8c2a618 Code: Bad RIP value. RSP: 002b:00007ffd37c486a8 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007ffd37c48770 RCX: 00007f7ad8c2a618 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00007ffd37c48820 R08: 00000000000000e7 R09: fffffffffffffe50 R10: 00000000ffffffff R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000003 R15: 000000000000000e Modules linked in: ---[ end trace 53afd8f120df8e51 ]--- RIP: 0010:__skb_insert include/linux/skbuff.h:1895 [inline] RIP: 0010:__skb_queue_before include/linux/skbuff.h:2001 [inline] RIP: 0010:__skb_queue_tail include/linux/skbuff.h:2034 [inline] RIP: 0010:skb_queue_tail+0xbb/0x180 net/core/skbuff.c:3144 Code: 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 82 00 00 00 4c 89 e2 48 89 6b 08 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 75 55 48 8d 7b 10 49 89 2c 24 48 b8 00 00 00 00 00 fc RSP: 0018:ffff8881db2099f0 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: ffff8881cd7ab590 RCX: ffffffff81274370 RDX: 0000000000000000 RSI: 0000000000000046 RDI: ffff8881cfdc1148 RBP: ffff8881cfdc1140 R08: 0000000000000004 R09: ffffed103b64132d R10: 0000000000000003 R11: ffffed103b64132c R12: 0000000000000000 R13: ffff8881cd7ab598 R14: ffff8881cd7ab5a8 R15: ffffffff82dcf820 FS: 00007f7ad9dda8c0(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000559104643e60 CR3: 00000001ce0ed000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This bug is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches
