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: 10949 Comm: syz-executor5 Not tainted 4.20.0-rc2+ #240
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__find_plane_by_offset drivers/media/common/videobuf2/videobuf2-core.c:2006 [inline]
RIP: 0010:vb2_mmap+0x23c/0x6f0 drivers/media/common/videobuf2/videobuf2-core.c:2128
Code: 80 3c 10 00 0f 85 1b 04 00 00 48 b9 00 00 00 00 00 fc ff df 48 8b 45 b8 48 8b 00 48 8d 78 14 48 89 45 d0 48 89 f8 48 c1 e8 03 <0f> b6 14 08 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 fa
RSP: 0018:ffff8881845f7780 EFLAGS: 00010203
RAX: 0000000000000002 RBX: 0000000000000009 RCX: dffffc0000000000
RDX: dffffc0000000000 RSI: ffffffff85588920 RDI: 0000000000000014
RBP: ffff8881845f77d0 R08: ffff8881c0f56400 R09: ffffed1037c8bc0e
R10: ffffed1037c8bc0e R11: ffff8881be45e077 R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881cb5c7268
FS:  0000000000000000(0000) GS:ffff8881daf00000(0063) knlGS:00000000f5f24b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000008080a10 CR3: 00000001b52b5000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 vb2_fop_mmap+0x4b/0x70 drivers/media/common/videobuf2/videobuf2-v4l2.c:999
 v4l2_mmap+0x153/0x200 drivers/media/v4l2-core/v4l2-dev.c:401
 call_mmap include/linux/fs.h:1862 [inline]
 mmap_region+0xe85/0x1cd0 mm/mmap.c:1786
 do_mmap+0xa22/0x1230 mm/mmap.c:1559
 do_mmap_pgoff include/linux/mm.h:2328 [inline]
 vm_mmap_pgoff+0x213/0x2c0 mm/util.c:350
 ksys_mmap_pgoff+0x4da/0x660 mm/mmap.c:1609
 __do_sys_mmap_pgoff mm/mmap.c:1620 [inline]
 __se_sys_mmap_pgoff mm/mmap.c:1616 [inline]
 __ia32_sys_mmap_pgoff+0xdd/0x1a0 mm/mmap.c:1616
 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
 do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7f49a29
Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000f5f240cc EFLAGS: 00000296 ORIG_RAX: 00000000000000c0
RAX: ffffffffffffffda RBX: 0000000020ffe000 RCX: 0000000000002000
RDX: 00000000fffffffd RSI: 0000000000000011 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
------------[ cut here ]------------
downgrading a read lock
WARNING: CPU: 1 PID: 10954 at kernel/locking/lockdep.c:3556 __lock_downgrade kernel/locking/lockdep.c:3556 [inline]
WARNING: CPU: 1 PID: 10954 at kernel/locking/lockdep.c:3556 lock_downgrade+0x4d7/0x900 kernel/locking/lockdep.c:3819