audit: type=1400 audit(1541206033.093:36): avc:  denied  { map } for  pid=5874 comm="syz-executor226" path="/root/syz-executor226828036" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
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: 5874 Comm: syz-executor226 Not tainted 4.19.0+ #95
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:vb2_vmalloc_put_userptr+0x73/0x250 drivers/media/common/videobuf2/videobuf2-vmalloc.c:136
Code: fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 c2 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5e 08 48 8d 7b 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 72 01 00 00
RSP: 0018:ffff8801c57af3a0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffffffff113e4b8
RDX: 0000000000000001 RSI: ffffffff854de1a9 RDI: 0000000000000009
RBP: ffff8801c57af3d0 R08: ffff8801c476e380 R09: ffffed00396f8cba
R10: ffff8801c57af4c8 R11: ffff8801cb7c65d7 R12: ffffc900025d5000
R13: 0000000000000000 R14: ffff8801bc913300 R15: ffff8801bc913300
FS:  0000000000000000(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000001914000 CR3: 000000000946a000 CR4: 00000000001406e0
Call Trace:
 __vb2_buf_userptr_put drivers/media/common/videobuf2/videobuf2-core.c:258 [inline]
 __vb2_free_mem drivers/media/common/videobuf2/videobuf2-core.c:417 [inline]
 __vb2_queue_free+0x4b1/0xa30 drivers/media/common/videobuf2/videobuf2-core.c:458
 vb2_core_queue_release+0x62/0x80 drivers/media/common/videobuf2/videobuf2-core.c:2231
 vb2_queue_release drivers/media/common/videobuf2/videobuf2-v4l2.c:837 [inline]
 _vb2_fop_release+0x1d2/0x2b0 drivers/media/common/videobuf2/videobuf2-v4l2.c:1010
 vb2_fop_release+0x77/0xc0 drivers/media/common/videobuf2/videobuf2-v4l2.c:1024
 vivid_fop_release+0x18e/0x440 drivers/media/platform/vivid/vivid-core.c:474
 v4l2_release+0x224/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:456
 __fput+0x385/0xa30 fs/file_table.c:278
 ____fput+0x15/0x20 fs/file_table.c:309
 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0x1ad6/0x26d0 kernel/exit.c:867
 do_group_exit+0x177/0x440 kernel/exit.c:970
 __do_sys_exit_group kernel/exit.c:981 [inline]
 __se_sys_exit_group kernel/exit.c:979 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:979
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x442da8
Code: Bad RIP value.
RSP: 002b:00007ffe6e91b418 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000442da8
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004c2968 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d4180 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
kobject: 'regulatory.0' (00000000b4edf152): kobject_uevent_env
---[ end trace a45047e5152c70da ]---
kobject: 'regulatory.0' (00000000b4edf152): fill_kobj_path: path = '/devices/platform/regulatory.0'
RIP: 0010:vb2_vmalloc_put_userptr+0x73/0x250 drivers/media/common/videobuf2/videobuf2-vmalloc.c:136
Code: fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 c2 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5e 08 48 8d 7b 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 72 01 00 00
RSP: 0018:ffff8801c57af3a0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffffffff113e4b8
RDX: 0000000000000001 RSI: ffffffff854de1a9 RDI: 0000000000000009
RBP: ffff8801c57af3d0 R08: ffff8801c476e380 R09: ffffed00396f8cba
R10: ffff8801c57af4c8 R11: ffff8801cb7c65d7 R12: ffffc900025d5000
R13: 0000000000000000 R14: ffff8801bc913300 R15: ffff8801bc913300
FS:  0000000000a15880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000043e920 CR3: 00000001c8593000 CR4: 00000000001406f0