general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 PID: 5132 Comm: syz-executor.2 Not tainted 6.2.0-rc3-next-20230111-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:pn533_out_complete.cold+0x15/0x44 drivers/nfc/pn533/usb.c:441 Code: df e8 32 09 fa f7 e9 39 ff ff ff 48 89 df e8 25 09 fa f7 eb e0 e8 9e 1d ac f7 4c 89 ea b8 ff ff 37 00 48 c1 ea 03 48 c1 e0 2a <80> 3c 02 00 75 1f 49 8b 7d 00 44 89 e2 48 c7 c6 20 bc d0 8a 48 81 RSP: 0018:ffffc90000007a58 EFLAGS: 00010086 RAX: dffffc0000000000 RBX: ffff888021d12b00 RCX: ffffc900020f1000 RDX: 0000000000000000 RSI: ffffffff89d5a352 RDI: 0000000000000005 RBP: ffffc90015e4ee70 R08: 0000000000000005 R09: 0000000000000000 R10: ffffffffffffffb9 R11: 0000000000000001 R12: ffffffffffffffb9 R13: 0000000000000000 R14: 0100000000000003 R15: 00000000ffffffb9 FS: 000055555580f400(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f537bbfe000 CR3: 0000000036e04000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __usb_hcd_giveback_urb+0x2b6/0x5c0 drivers/usb/core/hcd.c:1671 usb_hcd_giveback_urb+0x384/0x430 drivers/usb/core/hcd.c:1754 dummy_timer+0x1203/0x32d0 drivers/usb/gadget/udc/dummy_hcd.c:1988 call_timer_fn+0x1da/0x800 kernel/time/timer.c:1700 expire_timers+0x234/0x330 kernel/time/timer.c:1751 __run_timers kernel/time/timer.c:2022 [inline] __run_timers kernel/time/timer.c:1995 [inline] run_timer_softirq+0x326/0x910 kernel/time/timer.c:2035 __do_softirq+0x1fb/0xaf6 kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 irq_exit_rcu+0x9/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1107 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x3c/0x70 kernel/locking/spinlock.c:194 Code: 74 24 10 e8 16 11 5d f7 48 89 ef e8 3e 7c 5d f7 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 9f 91 4f f7 65 8b 05 b0 b0 fc 75 85 c0 74 0a 5b 5d c3 e8 8c 39 RSP: 0018:ffffc90003e9fc78 EFLAGS: 00000206 RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff1ce7519 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffff88802b895120 R08: 0000000000000001 R09: 0000000000000001 R10: ffffed1005712a24 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88801e6e1d40 R14: 0000000000000000 R15: ffff88801e6e2328 do_wait+0x6a0/0xd90 kernel/exit.c:1630 kernel_wait4+0x150/0x260 kernel/exit.c:1768 __do_sys_wait4+0x13f/0x150 kernel/exit.c:1796 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fac42089ca7 Code: 89 7c 24 10 48 89 4c 24 18 e8 f5 58 02 00 4c 8b 54 24 18 8b 54 24 14 41 89 c0 48 8b 74 24 08 8b 7c 24 10 b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 89 44 24 10 e8 25 59 02 00 8b 44 RSP: 002b:00007ffcb8bf3470 EFLAGS: 00000293 ORIG_RAX: 000000000000003d RAX: ffffffffffffffda RBX: 0000000000000a41 RCX: 00007fac42089ca7 RDX: 0000000040000001 RSI: 00007ffcb8bf34fc RDI: 00000000ffffffff RBP: 00007ffcb8bf34fc R08: 0000000000000000 R09: 00007ffcb8bf6080 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032 R13: 00000000000a6e4a R14: 0000000000000002 R15: 00007ffcb8bf3560 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:pn533_out_complete.cold+0x15/0x44 drivers/nfc/pn533/usb.c:441 Code: df e8 32 09 fa f7 e9 39 ff ff ff 48 89 df e8 25 09 fa f7 eb e0 e8 9e 1d ac f7 4c 89 ea b8 ff ff 37 00 48 c1 ea 03 48 c1 e0 2a <80> 3c 02 00 75 1f 49 8b 7d 00 44 89 e2 48 c7 c6 20 bc d0 8a 48 81 RSP: 0018:ffffc90000007a58 EFLAGS: 00010086 RAX: dffffc0000000000 RBX: ffff888021d12b00 RCX: ffffc900020f1000 RDX: 0000000000000000 RSI: ffffffff89d5a352 RDI: 0000000000000005 RBP: ffffc90015e4ee70 R08: 0000000000000005 R09: 0000000000000000 R10: ffffffffffffffb9 R11: 0000000000000001 R12: ffffffffffffffb9 R13: 0000000000000000 R14: 0100000000000003 R15: 00000000ffffffb9 FS: 000055555580f400(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f537bbfe000 CR3: 0000000036e04000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: e8 32 09 fa f7 callq 0xf7fa0937 5: e9 39 ff ff ff jmpq 0xffffff43 a: 48 89 df mov %rbx,%rdi d: e8 25 09 fa f7 callq 0xf7fa0937 12: eb e0 jmp 0xfffffff4 14: e8 9e 1d ac f7 callq 0xf7ac1db7 19: 4c 89 ea mov %r13,%rdx 1c: b8 ff ff 37 00 mov $0x37ffff,%eax 21: 48 c1 ea 03 shr $0x3,%rdx 25: 48 c1 e0 2a shl $0x2a,%rax * 29: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2d: 75 1f jne 0x4e 2f: 49 8b 7d 00 mov 0x0(%r13),%rdi 33: 44 89 e2 mov %r12d,%edx 36: 48 c7 c6 20 bc d0 8a mov $0xffffffff8ad0bc20,%rsi 3d: 48 rex.W 3e: 81 .byte 0x81