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: 27933 Comm: syz-executor1 Not tainted 4.19.0-rc5+ #31
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 2d c2 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
RSP: 0018:ffff8801427c74a0 EFLAGS: 00010247
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc900046e0000
RDX: 0000000000000000 RSI: ffffffff850021f3 RDI: 0000000000000004
RBP: ffff8801427c74e0 R08: ffff8801d4fce400 R09: ffffed00284f8eb2
R10: ffffed00284f8eb4 R11: ffff8801427c75a7 R12: 0000000000000000
R13: ffff8801cdec96c0 R14: ffff8801c7368800 R15: 0000000000000000
FS:  00007f3acbb20700(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000930004 CR3: 0000000192829000 CR4: 00000000001406e0
Call Trace:
kobject: 'loop3' (000000001c07c675): kobject_uevent_env
 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
kobject: 'loop3' (000000001c07c675): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop4' (00000000ab2886f9): kobject_uevent_env
kobject: 'loop4' (00000000ab2886f9): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop5' (0000000034cfe67e): kobject_uevent_env
kobject: 'loop5' (0000000034cfe67e): fill_kobj_path: path = '/devices/virtual/block/loop5'
 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
kobject: 'loop2' (000000005e4e63d4): kobject_uevent_env
 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:702
kobject: 'loop2' (000000005e4e63d4): fill_kobj_path: path = '/devices/virtual/block/loop2'
 __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
kobject: 'loop5' (0000000034cfe67e): kobject_uevent_env
RSP: 002b:00007f3acbb1fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f3acbb206d4 RCX: 0000000000457679
RDX: 0000000020000000 RSI: 00000000c0185500 RDI: 0000000000000003
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004cf770 R14: 00000000004bf80d R15: 0000000000000000
Modules linked in:
---[ end trace 81a564b6e6a98868 ]---
kobject: 'loop5' (0000000034cfe67e): fill_kobj_path: path = '/devices/virtual/block/loop5'
RIP: 0010:usb_find_alt_setting+0x38/0x310 drivers/usb/core/usb.c:231
kobject: 'loop3' (000000001c07c675): kobject_uevent_env
Code: 89 fb 48 83 ec 18 48 89 7d c0 89 55 d4 89 75 d0 e8 2d c2 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: 'loop3' (000000001c07c675): fill_kobj_path: path = '/devices/virtual/block/loop3'
RSP: 0018:ffff8801427c74a0 EFLAGS: 00010247
kobject: 'loop4' (00000000ab2886f9): kobject_uevent_env
kobject: 'loop2' (000000005e4e63d4): kobject_uevent_env
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc900046e0000
kobject: 'loop4' (00000000ab2886f9): fill_kobj_path: path = '/devices/virtual/block/loop4'
RDX: 0000000000000000 RSI: ffffffff850021f3 RDI: 0000000000000004
kobject: 'loop2' (000000005e4e63d4): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop4' (00000000ab2886f9): kobject_uevent_env
kobject: 'loop2' (000000005e4e63d4): kobject_uevent_env
kobject: 'loop2' (000000005e4e63d4): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop3' (000000001c07c675): kobject_uevent_env
kobject: 'loop3' (000000001c07c675): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop2' (000000005e4e63d4): kobject_uevent_env
kobject: 'loop2' (000000005e4e63d4): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop4' (00000000ab2886f9): fill_kobj_path: path = '/devices/virtual/block/loop4'
RBP: ffff8801427c74e0 R08: ffff8801d4fce400 R09: ffffed00284f8eb2
R10: ffffed00284f8eb4 R11: ffff8801427c75a7 R12: 0000000000000000
R13: ffff8801cdec96c0 R14: ffff8801c7368800 R15: 0000000000000000
FS:  00007f3acbb20700(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f524d575518 CR3: 0000000192829000 CR4: 00000000001406e0