363894 pages reserved
0 pages cma reserved
oom_reaper: reaped process 7682 (rsyslogd), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB
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: 13565 Comm: syz-executor.4 Not tainted 4.14.272-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880af186180 task.stack: ffff88809ac80000
RIP: 0010:vb2_vmalloc_put_userptr+0x6a/0x210 drivers/media/v4l2-core/videobuf2-vmalloc.c:136
RSP: 0000:ffff88809ac87a48 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90008cf0000
RDX: 0000000000000001 RSI: ffffffff84c24852 RDI: 0000000000000009
RBP: ffff88809f5cba80 R08: 0000000000000000 R09: 0000000000040555
R10: ffff8880af186a30 R11: ffff8880af186180 R12: 0000000000000000
R13: ffff88809f5cba88 R14: ffffc9000b505000 R15: ffff88809f5cba80
FS:  00007f7e63858700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000453880 CR3: 0000000098bf0000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
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+0x394/0x7a0 drivers/media/v4l2-core/videobuf2-core.c:454
 vb2_core_queue_release+0x5b/0x70 drivers/media/v4l2-core/videobuf2-core.c:2054
 v4l2_m2m_ctx_release+0x1a/0x30 drivers/media/v4l2-core/v4l2-mem2mem.c:673
 vim2m_release+0xd4/0x120 drivers/media/platform/vim2m.c:959
 v4l2_release+0xf4/0x190 drivers/media/v4l2-core/v4l2-dev.c:446
 __fput+0x25f/0x7a0 fs/file_table.c:210
 task_work_run+0x11f/0x190 kernel/task_work.c:113
 get_signal+0x18a3/0x1ca0 kernel/signal.c:2223
 do_signal+0x7c/0x1550 arch/x86/kernel/signal.c:792
 exit_to_usermode_loop+0x160/0x200 arch/x86/entry/common.c:160
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
 do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f7e64ee3049
RSP: 002b:00007f7e63858168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: fffffffffffffff2 RBX: 00007f7e64ff5f60 RCX: 00007f7e64ee3049
RDX: 0000000020000080 RSI: 00000000c100565c RDI: 0000000000000003
RBP: 00007f7e64f3d08d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd42d9285f R14: 00007f7e63858300 R15: 0000000000022000
Code: 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 91 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 65 08 49 8d 7c 24 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 40 01 00 
RIP: vb2_vmalloc_put_userptr+0x6a/0x210 drivers/media/v4l2-core/videobuf2-vmalloc.c:136 RSP: ffff88809ac87a48
---[ end trace addb63c332d380fe ]---
----------------
Code disassembly (best guess):
   0:	4c 89 ea             	mov    %r13,%rdx
   3:	48 c1 ea 03          	shr    $0x3,%rdx
   7:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   b:	0f 85 91 01 00 00    	jne    0x1a2
  11:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  18:	fc ff df
  1b:	4c 8b 65 08          	mov    0x8(%rbp),%r12
  1f:	49 8d 7c 24 09       	lea    0x9(%r12),%rdi
  24:	48 89 fa             	mov    %rdi,%rdx
  27:	48 c1 ea 03          	shr    $0x3,%rdx
* 2b:	0f b6 04 02          	movzbl (%rdx,%rax,1),%eax <-- trapping instruction
  2f:	48 89 fa             	mov    %rdi,%rdx
  32:	83 e2 07             	and    $0x7,%edx
  35:	38 d0                	cmp    %dl,%al
  37:	7f 08                	jg     0x41
  39:	84 c0                	test   %al,%al
  3b:	0f                   	.byte 0xf
  3c:	85 40 01             	test   %eax,0x1(%rax)