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
Modules linked in:
CPU: 1 PID: 17720 Comm: syz-executor.0 Not tainted 4.14.138 #34
kobject: 'loop1' (ffff8880a4a5c0a0): kobject_uevent_env
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88805dd7c300 task.stack: ffff88805bb28000
RIP: 0010:vb2_vmalloc_put_userptr+0x6e/0x210 drivers/media/v4l2-core/videobuf2-vmalloc.c:136
RSP: 0018:ffff88805bb2fc18 EFLAGS: 00010202
kobject: 'loop1' (ffff8880a4a5c0a0): fill_kobj_path: path = '/devices/virtual/block/loop1'
RAX: dffffc0000000000 RBX: ffffc90017408000 RCX: 1ffffffff0da764c
RDX: 0000000000000001 RSI: ffff88809b7d62d4 RDI: 0000000000000009
RBP: ffff88805bb2fc40 R08: dffffc0000000000 R09: ffffffff88c82280
R10: ffff88805bb2fcd0 R11: ffff88805dd7c300 R12: ffff888096113700
R13: 0000000000000000 R14: ffff888096113700 R15: ffff888096113708
FS:  0000000001979940(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f98721c1570 CR3: 0000000078407000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
kobject: 'loop2' (ffff8880a4ab4120): kobject_uevent_env
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __vb2_buf_userptr_put drivers/media/v4l2-core/videobuf2-core.c:256 [inline]
 __vb2_free_mem drivers/media/v4l2-core/videobuf2-core.c:413 [inline]
 __vb2_queue_free+0x3a8/0x7d0 drivers/media/v4l2-core/videobuf2-core.c:454
 vb2_core_queue_release+0x64/0x80 drivers/media/v4l2-core/videobuf2-core.c:2043
kobject: 'loop2' (ffff8880a4ab4120): fill_kobj_path: path = '/devices/virtual/block/loop2'
 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
kobject: 'loop5' (ffff8880a4b9f3a0): kobject_uevent_env
 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
kobject: 'loop5' (ffff8880a4b9f3a0): fill_kobj_path: path = '/devices/virtual/block/loop5'
 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
 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
RSP: 002b:00007ffeee3f08e0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000413511
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 00000000b646590d R09: 00000000b6465911
R10: 00007ffeee3f09c0 R11: 0000000000000293 R12: 000000000075c9a0
R13: 000000000075c9a0 R14: 0000000000761450 R15: ffffffffffffffff
Code: 4c 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 8d 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6c 24 08 49 8d 7d 09 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 3c 01 00 
RIP: vb2_vmalloc_put_userptr+0x6e/0x210 drivers/media/v4l2-core/videobuf2-vmalloc.c:136 RSP: ffff88805bb2fc18
---[ end trace faac4ba6754bfa91 ]---