syzbot has found a reproducer for the following issue on: HEAD commit: 92e815cf07ed Add linux-next specific files for 20230428 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=104cb844280000 kernel config: https://syzkaller.appspot.com/x/.config?x=c8c8ae4d47d23592 dashboard link: https://syzkaller.appspot.com/bug?extid=a3f758b8d8cb7e49afec compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14a5408c280000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10d3b0e4280000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/c9e94856e6c9/disk-92e815cf.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/4c1c05a548a7/vmlinux-92e815cf.xz kernel image: https://storage.googleapis.com/syzbot-assets/2a1bff6a133b/bzImage-92e815cf.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+a3f758b8d8cb7e49afec@xxxxxxxxxxxxxxxxxxxxxxxxx usb 1-1: config 0 has no interface number 0 usb 1-1: New USB device found, idVendor=1949, idProduct=5e70, bcdDevice=d7.a2 usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 usb 1-1: config 0 descriptor?? usb 1-1: string descriptor 0 read error: -71 general protection fault, probably for non-canonical address 0xdffffc0000000068: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000340-0x0000000000000347] CPU: 0 PID: 9 Comm: kworker/0:1 Not tainted 6.3.0-next-20230428-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 Workqueue: usb_hub_wq hub_event RIP: 0010:dev_name include/linux/device.h:706 [inline] RIP: 0010:__dev_printk+0x3b/0x270 drivers/base/core.c:4863 Code: f5 53 e8 c8 c3 6b fc 48 85 ed 0f 84 cb 01 00 00 e8 ba c3 6b fc 48 8d 7d 50 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d7 01 00 00 48 8b 5d 50 48 85 db 0f 84 b5 00 00 RSP: 0018:ffffc900000e6f70 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: fffff5200001cdf5 RCX: 0000000000000000 RDX: 0000000000000068 RSI: ffffffff85188a06 RDI: 0000000000000340 RBP: 00000000000002f0 R08: 0000000000000005 R09: 0000000000000000 R10: 00000000ffffffb9 R11: ffffffff81d6ff05 R12: ffffffff8ace98e0 R13: ffffc900000e6fc8 R14: ffff88801ed25a64 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1361dc1111 CR3: 00000000210fe000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> _dev_warn+0xdc/0x120 drivers/base/core.c:4907 xpad_probe+0x197e/0x2020 drivers/input/joystick/xpad.c:2053 usb_probe_interface+0x30f/0x960 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x240/0xca0 drivers/base/dd.c:658 __driver_probe_device+0x1df/0x4b0 drivers/base/dd.c:800 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:830 __device_attach_driver+0x1d4/0x2e0 drivers/base/dd.c:958 bus_for_each_drv+0x149/0x1d0 drivers/base/bus.c:457 __device_attach+0x1e4/0x4b0 drivers/base/dd.c:1030 bus_probe_device+0x17c/0x1c0 drivers/base/bus.c:532 device_add+0x112d/0x1a40 drivers/base/core.c:3625 usb_set_configuration+0x1196/0x1bc0 drivers/usb/core/message.c:2211 usb_generic_driver_probe+0xcf/0x130 drivers/usb/core/generic.c:238 usb_probe_device+0xd8/0x2c0 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x240/0xca0 drivers/base/dd.c:658 __driver_probe_device+0x1df/0x4b0 drivers/base/dd.c:800 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:830 __device_attach_driver+0x1d4/0x2e0 drivers/base/dd.c:958 bus_for_each_drv+0x149/0x1d0 drivers/base/bus.c:457 __device_attach+0x1e4/0x4b0 drivers/base/dd.c:1030 bus_probe_device+0x17c/0x1c0 drivers/base/bus.c:532 device_add+0x112d/0x1a40 drivers/base/core.c:3625 usb_new_device+0xcb2/0x19d0 drivers/usb/core/hub.c:2575 hub_port_connect drivers/usb/core/hub.c:5407 [inline] hub_port_connect_change drivers/usb/core/hub.c:5551 [inline] port_event drivers/usb/core/hub.c:5711 [inline] hub_event+0x2d9e/0x4e40 drivers/usb/core/hub.c:5793 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552 kthread+0x344/0x440 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:dev_name include/linux/device.h:706 [inline] RIP: 0010:__dev_printk+0x3b/0x270 drivers/base/core.c:4863 Code: f5 53 e8 c8 c3 6b fc 48 85 ed 0f 84 cb 01 00 00 e8 ba c3 6b fc 48 8d 7d 50 48 b8 00 00 00 00 00 fc ff df 48 89 ---------------- Code disassembly (best guess): 0: f5 cmc 1: 53 push %rbx 2: e8 c8 c3 6b fc callq 0xfc6bc3cf 7: 48 85 ed test %rbp,%rbp a: 0f 84 cb 01 00 00 je 0x1db 10: e8 ba c3 6b fc callq 0xfc6bc3cf 15: 48 8d 7d 50 lea 0x50(%rbp),%rdi 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 d7 01 00 00 jne 0x20b 34: 48 8b 5d 50 mov 0x50(%rbp),%rbx 38: 48 85 db test %rbx,%rbx 3b: 0f .byte 0xf 3c: 84 .byte 0x84 3d: b5 00 mov $0x0,%ch --- If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing.
