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: 20855 Comm: syz-executor0 Not tainted 4.20.0-rc7+ #375
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:ffff8881b6907960 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffffffff114226c
RDX: 0000000000000001 RSI: ffffffff855a2889 RDI: 0000000000000009
RBP: ffff8881b6907990 R08: ffff88817fbd8300 R09: ffffed10396f4e61
R10: ffff8881b6907a88 R11: ffff8881cb7a730f R12: ffffc90012cce000
R13: 0000000000000000 R14: ffff8881c3b21700 R15: ffff8881c3b21700
FS:  0000000001140940(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000072c000 CR3: 00000001b8522000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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:2257
 vb2_queue_release drivers/media/common/videobuf2/videobuf2-v4l2.c:842 [inline]
 _vb2_fop_release+0x1d2/0x2b0 drivers/media/common/videobuf2/videobuf2-v4l2.c:1015
 vb2_fop_release+0x77/0xc0 drivers/media/common/videobuf2/videobuf2-v4l2.c:1029
 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
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
 do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x411121
Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 19 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007ffdc5cd3430 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000411121
RDX: 0000000000000001 RSI: 0000000000730ee0 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 00007ffdc5cd3360 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000001 R14: 000000000000008e R15: 0000000000000000
Modules linked in:
kobject: 'loop4' (0000000075dab1f7): kobject_uevent_env
kobject: 'loop4' (0000000075dab1f7): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop2' (0000000039469d20): kobject_uevent_env
kobject: 'loop2' (0000000039469d20): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop4' (0000000075dab1f7): kobject_uevent_env
kobject: 'loop4' (0000000075dab1f7): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop2' (0000000039469d20): kobject_uevent_env
kobject: 'loop2' (0000000039469d20): fill_kobj_path: path = '/devices/virtual/block/loop2'
---[ end trace f67fb59dd2302d60 ]---
RIP: 0010:vb2_vmalloc_put_userptr+0x73/0x250 drivers/media/common/videobuf2/videobuf2-vmalloc.c:136
kobject: 'loop4' (0000000075dab1f7): kobject_uevent_env
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
kobject: 'loop4' (0000000075dab1f7): fill_kobj_path: path = '/devices/virtual/block/loop4'
RSP: 0018:ffff8881b6907960 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffffffff114226c
RDX: 0000000000000001 RSI: ffffffff855a2889 RDI: 0000000000000009
RBP: ffff8881b6907990 R08: ffff88817fbd8300 R09: ffffed10396f4e61
R10: ffff8881b6907a88 R11: ffff8881cb7a730f R12: ffffc90012cce000
R13: 0000000000000000 R14: ffff8881c3b21700 R15: ffff8881c3b21700
FS:  0000000001140940(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd47b494000 CR3: 00000001b8522000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
kobject: 'loop5' (00000000df5d02d0): kobject_uevent_env