kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 12732 Comm: syz-executor5 Not tainted 4.19.0-rc4+ #27
kobject: 'loop4' (000000004ae79e36): kobject_uevent_env
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:usb_find_alt_setting+0x38/0x310 drivers/usb/core/usb.c:231
Code: 89 fb 48 83 ec 18 48 89 7d c0 89 55 d4 89 75 d0 e8 dd c8 7e fc 48 8d 7b 04 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 84 02 00 00
kobject: 'loop4' (000000004ae79e36): fill_kobj_path: path = '/devices/virtual/block/loop4'
RSP: 0018:ffff88018d11f4a0 EFLAGS: 00010247
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90002eec000
RDX: 0000000000000000 RSI: ffffffff85000ba3 RDI: 0000000000000004
RBP: ffff88018d11f4e0 R08: ffff8801bc9826c0 R09: ffffed0031a23eb2
R10: ffffed0031a23eb4 R11: ffff88018d11f5a7 R12: 0000000000000000
R13: ffff8801ce3b5600 R14: ffff8801d8df0780 R15: 0000000000000000
FS:  00007f3d4e733700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000720488 CR3: 00000001cd5f4000 CR4: 00000000001406e0
Call Trace:
TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies.  Check SNMP counters.
 check_ctrlrecip+0x1e6/0x320 drivers/usb/core/devio.c:828
 proc_control+0x151/0xef0 drivers/usb/core/devio.c:1074
 usbdev_do_ioctl+0x1eb8/0x3b50 drivers/usb/core/devio.c:2394
 usbdev_ioctl+0x25/0x30 drivers/usb/core/devio.c:2551
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:685
 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:702
 __do_sys_ioctl fs/ioctl.c:709 [inline]
 __se_sys_ioctl fs/ioctl.c:707 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:707
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457679
Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f3d4e732c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f3d4e7336d4 RCX: 0000000000457679
RDX: 0000000020000000 RSI: 00000000c0185500 RDI: 0000000000000003
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004cf508 R14: 00000000004bf7f2 R15: 0000000000000000
Modules linked in:
---[ end trace a4feae268a6a908e ]---
RIP: 0010:usb_find_alt_setting+0x38/0x310 drivers/usb/core/usb.c:231
kobject: 'loop4' (000000004ae79e36): kobject_uevent_env
Code: 89 fb 48 83 ec 18 48 89 7d c0 89 55 d4 89 75 d0 e8 dd c8 7e fc 48 8d 7b 04 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 84 02 00 00
kobject: 'loop4' (000000004ae79e36): fill_kobj_path: path = '/devices/virtual/block/loop4'
RSP: 0018:ffff88018d11f4a0 EFLAGS: 00010247
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90002eec000
RDX: 0000000000000000 RSI: ffffffff85000ba3 RDI: 0000000000000004
RBP: ffff88018d11f4e0 R08: ffff8801bc9826c0 R09: ffffed0031a23eb2
R10: ffffed0031a23eb4 R11: ffff88018d11f5a7 R12: 0000000000000000
R13: ffff8801ce3b5600 R14: ffff8801d8df0780 R15: 0000000000000000
FS:  00007f3d4e733700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kobject: 'loop4' (000000004ae79e36): kobject_uevent_env
CR2: 0000001b2f127000 CR3: 00000001cd5f4000 CR4: 00000000001406e0
kobject: 'loop4' (000000004ae79e36): fill_kobj_path: path = '/devices/virtual/block/loop4'