kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
hid-generic 0000:0000:0000.0004: unknown main item tag 0x0
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 8746 Comm: syz-executor.5 Not tainted 4.14.134 #30
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
hid-generic 0000:0000:0000.0004: unknown main item tag 0x0
task: ffff88805764c340 task.stack: ffff888058df8000
RIP: 0010:__read_once_size include/linux/compiler.h:183 [inline]
RIP: 0010:atomic_read arch/x86/include/asm/atomic.h:27 [inline]
RIP: 0010:refcount_sub_and_test+0x2b/0xf0 lib/refcount.c:179
RSP: 0018:ffff888058dffb98 EFLAGS: 00010202
hid-generic 0000:0000:0000.0004: unknown main item tag 0x0
RAX: dffffc0000000000 RBX: ffff8880a5617580 RCX: ffffffff84259550
RDX: 0000000000000004 RSI: 0000000000000020 RDI: 0000000000000001
RBP: ffff888058dffbc0 R08: 00000000a6b24492 R09: ffff88805764cc08
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000020
R13: 0000000000000001 R14: ffff8880a5617594 R15: 0000000000000000
FS:  00000000027f7940(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
hid-generic 0000:0000:0000.0004: unknown main item tag 0x0
CR2: 00007f0d20207000 CR3: 0000000097296000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 refcount_dec_and_test+0x1b/0x20 lib/refcount.c:212
 vb2_vmalloc_put+0x18/0x70 drivers/media/v4l2-core/videobuf2-vmalloc.c:68
hid-generic 0000:0000:0000.0004: unknown main item tag 0x0
 __vb2_buf_mem_free+0x103/0x1e0 drivers/media/v4l2-core/videobuf2-core.c:240
hid-generic 0000:0000:0000.0004: unknown main item tag 0x0
 __vb2_free_mem drivers/media/v4l2-core/videobuf2-core.c:409 [inline]
 __vb2_queue_free+0x634/0x7d0 drivers/media/v4l2-core/videobuf2-core.c:454
 vb2_core_queue_release+0x64/0x80 drivers/media/v4l2-core/videobuf2-core.c:2043
 vb2_queue_release drivers/media/v4l2-core/videobuf2-v4l2.c:669 [inline]
 _vb2_fop_release+0x1cf/0x2a0 drivers/media/v4l2-core/videobuf2-v4l2.c:840
 vb2_fop_release+0x75/0xc0 drivers/media/v4l2-core/videobuf2-v4l2.c:854
 vivid_fop_release+0x180/0x3f0 drivers/media/platform/vivid/vivid-core.c:486
hid-generic 0000:0000:0000.0004: unknown main item tag 0x0
 v4l2_release+0xf9/0x190 drivers/media/v4l2-core/v4l2-dev.c:446
 __fput+0x275/0x7a0 fs/file_table.c:210
 ____fput+0x16/0x20 fs/file_table.c:244
hid-generic 0000:0000:0000.0004: unknown main item tag 0x0
 task_work_run+0x114/0x190 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 exit_to_usermode_loop+0x1da/0x220 arch/x86/entry/common.c:164
hid-generic 0000:0000:0000.0004: unknown main item tag 0x0
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
 do_syscall_64+0x4bc/0x640 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x413511
hid-generic 0000:0000:0000.0004: unknown main item tag 0x0
RSP: 002b:00007ffe29ff4a20 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000413511
RDX: 0000001b2da20000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 0000000000000001 R08: 000000006e783fbb R09: 000000006e783fbf
hid-generic 0000:0000:0000.0004: unknown main item tag 0x0
R10: 00007ffe29ff4b00 R11: 0000000000000293 R12: 000000000075bf20
R13: 0000000000031b12 R14: 00000000007605e8 R15: ffffffffffffffff
Code: 55 48 89 e5 41 56 41 
kobject: 'hidraw' (ffff88809497a800): kobject_add_internal: parent: '0000:0000:0000.0004', set: '(null)'
55 41 89 fd 41 54 49 89 f4 53 48 83 ec 08 e8 06 b0 85 fe 4c 89 e2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 
kobject: 'hidraw0' (ffff8880a55bcd90): kobject_add_internal: parent: 'hidraw', set: 'devices'
<0f> b6 14 02 4c 89 e0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 
RIP: __read_once_size include/linux/compiler.h:183 [inline] RSP: ffff888058dffb98
RIP: atomic_read arch/x86/include/asm/atomic.h:27 [inline] RSP: ffff888058dffb98
RIP: refcount_sub_and_test+0x2b/0xf0 lib/refcount.c:179 RSP: ffff888058dffb98
kobject: 'loop3' (ffff8880a4a28ae0): kobject_uevent_env
kobject: 'hidraw0' (ffff8880a55bcd90): kobject_uevent_env
kobject: 'loop3' (ffff8880a4a28ae0): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop2' (ffff8880a49c2a60): kobject_uevent_env
kobject: 'hidraw0' (ffff8880a55bcd90): fill_kobj_path: path = '/devices/virtual/misc/uhid/0000:0000:0000.0004/hidraw/hidraw0'
kobject: 'loop2' (ffff8880a49c2a60): fill_kobj_path: path = '/devices/virtual/block/loop2'
hid-generic 0000:0000:0000.0004: hidraw0: <UNKNOWN> HID v0.00 Device [syz1] on syz1
kobject: 'loop0' (ffff8880a49140e0): kobject_uevent_env
kobject: '0000:0000:0000.0004' (ffff888055ca2b78): kobject_uevent_env
kobject: 'loop0' (ffff8880a49140e0): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: '0000:0000:0000.0004' (ffff888055ca2b78): fill_kobj_path: path = '/devices/virtual/misc/uhid/0000:0000:0000.0004'
kobject: 'loop1' (ffff8880a496a9e0): kobject_uevent_env
kobject: 'hidraw0' (ffff8880a55bcd90): kobject_uevent_env
kobject: 'loop1' (ffff8880a496a9e0): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'hidraw0' (ffff8880a55bcd90): fill_kobj_path: path = '/devices/virtual/misc/uhid/0000:0000:0000.0004/hidraw/hidraw0'
---[ end trace c64e0ec923eee202 ]---