[syzbot] [kernel?] general protection fault in xpad_probe

From: syzbot
Date: Tue Apr 11 2023 - 02:55:33 EST

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Hello,

syzbot found the following issue on:

HEAD commit: 6a53bda3aaf3 Add linux-next specific files for 20230404
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=16cde443c80000
kernel config: https://syzkaller.appspot.com/x/.config?x=2da90e7abb20c1a
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

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/1b162a671d14/disk-6a53bda3.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/2a0dbf376db5/vmlinux-6a53bda3.xz
kernel image: https://storage.googleapis.com/syzbot-assets/6d48fe3fd998/bzImage-6a53bda3.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+a3f758b8d8cb7e49afec@xxxxxxxxxxxxxxxxxxxxxxxxx

usb 6-1: config 0 interface 65 has no altsetting 0
usb 6-1: New USB device found, idVendor=12ab, idProduct=90a1, bcdDevice=1e.eb
usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 6-1: config 0 descriptor??
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: 20530 Comm: kworker/0:1 Not tainted 6.3.0-rc5-next-20230404-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
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:4869
Code: f5 53 e8 88 8e 6f fc 48 85 ed 0f 84 cb 01 00 00 e8 7a 8e 6f 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:ffffc90004c66f70 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: fffff5200098cdf5 RCX: ffffc90014c8c000
RDX: 0000000000000068 RSI: ffffffff8513c496 RDI: 0000000000000340
RBP: 00000000000002f0 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000ffffff92 R11: 0000000000000000 R12: ffffffff8ace0700
R13: ffffc90004c66fc8 R14: ffff88804962d264 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2cd2c000 CR3: 00000000458ec000 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:4913
xpad_probe+0x197e/0x2020 drivers/input/joystick/xpad.c:2035
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/0x4d0 drivers/base/dd.c:795
driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:825
__device_attach_driver+0x1d4/0x2e0 drivers/base/dd.c:953
bus_for_each_drv+0x149/0x1d0 drivers/base/bus.c:457
__device_attach+0x1e4/0x4b0 drivers/base/dd.c:1025
bus_probe_device+0x17c/0x1c0 drivers/base/bus.c:532
device_add+0x112d/0x1a50 drivers/base/core.c:3627
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/0x4d0 drivers/base/dd.c:795
driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:825
__device_attach_driver+0x1d4/0x2e0 drivers/base/dd.c:953
bus_for_each_drv+0x149/0x1d0 drivers/base/bus.c:457
__device_attach+0x1e4/0x4b0 drivers/base/dd.c:1025
bus_probe_device+0x17c/0x1c0 drivers/base/bus.c:532
device_add+0x112d/0x1a50 drivers/base/core.c:3627
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+0x33e/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:4869
Code: f5 53 e8 88 8e 6f fc 48 85 ed 0f 84 cb 01 00 00 e8 7a 8e 6f 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:ffffc90004c66f70 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: fffff5200098cdf5 RCX: ffffc90014c8c000
RDX: 0000000000000068 RSI: ffffffff8513c496 RDI: 0000000000000340
RBP: 00000000000002f0 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000ffffff92 R11: 0000000000000000 R12: ffffffff8ace0700
R13: ffffc90004c66fc8 R14: ffff88804962d264 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c012c4b000 CR3: 000000002c080000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: f5 cmc
1: 53 push %rbx
2: e8 88 8e 6f fc callq 0xfc6f8e8f
7: 48 85 ed test %rbp,%rbp
a: 0f 84 cb 01 00 00 je 0x1db
10: e8 7a 8e 6f fc callq 0xfc6f8e8f
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

---
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Next message: Michael S. Tsirkin: "Re: [PATCH] virtio_pci: Wait for legacy device to be reset"
Previous message: syzbot: "[syzbot] [reiserfs?] KASAN: null-ptr-deref Read in fix_nodes"
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