get_vaddr_frames() cannot follow VM_IO mapping
WARNING: CPU: 1 PID: 27875 at drivers/media/common/videobuf2/frame_vector.c:63 get_vaddr_frames drivers/media/common/videobuf2/frame_vector.c:63 [inline]
WARNING: CPU: 1 PID: 27875 at drivers/media/common/videobuf2/frame_vector.c:63 get_vaddr_frames+0x217/0x220 drivers/media/common/videobuf2/frame_vector.c:36
Modules linked in:
CPU: 1 PID: 27875 Comm: syz-executor.2 Not tainted 6.2.0-rc1-syzkaller-00095-ge4cf7c25bae5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:get_vaddr_frames drivers/media/common/videobuf2/frame_vector.c:63 [inline]
RIP: 0010:get_vaddr_frames+0x217/0x220 drivers/media/common/videobuf2/frame_vector.c:36
Code: c6 3c fb e9 06 ff ff ff e8 46 c6 3c fb e9 cd fe ff ff e8 4c be ee fa 48 c7 c7 c0 d7 1c 8b c6 05 22 1f cb 07 01 e8 f9 ad 2c 03 <0f> 0b e9 53 ff ff ff 66 90 41 57 41 56 41 55 41 54 49 89 fc 55 4d
RSP: 0018:ffffc9000afe77b0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffffc90019000000 RCX: 0000000000000000
RDX: ffff88801e639d40 RSI: ffffffff8166721c RDI: fffff520015fcee8
RBP: ffffc90019000004 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000000 R12: 00000000fffffffc
R13: 0000000000000000 R14: 00000000f6600000 R15: ffff888026d8d000
FS:  0000000000000000(0000) GS:ffff8880b9900000(0063) knlGS:00000000f7fc6b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f734d1b0 CR3: 0000000020522000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 vb2_create_framevec+0x62/0xd0 drivers/media/common/videobuf2/videobuf2-memops.c:52
 vb2_vmalloc_get_userptr+0x13b/0x530 drivers/media/common/videobuf2/videobuf2-vmalloc.c:89
 __prepare_userptr+0x31e/0x1580 drivers/media/common/videobuf2/videobuf2-core.c:1199
 __buf_prepare+0x5e4/0x780 drivers/media/common/videobuf2/videobuf2-core.c:1441
 vb2_core_prepare_buf+0xe4/0x2c0 drivers/media/common/videobuf2/videobuf2-core.c:1580
 vb2_prepare_buf+0x103/0x170 drivers/media/common/videobuf2/videobuf2-v4l2.c:738
 v4l2_m2m_prepare_buf+0xe8/0x210 drivers/media/v4l2-core/v4l2-mem2mem.c:823
 v4l_prepare_buf drivers/media/v4l2-core/v4l2-ioctl.c:2145 [inline]
 v4l_prepare_buf+0x96/0xc0 drivers/media/v4l2-core/v4l2-ioctl.c:2139
 __video_do_ioctl+0xb9d/0xe20 drivers/media/v4l2-core/v4l2-ioctl.c:3034
 video_usercopy+0x3b8/0x17f0 drivers/media/v4l2-core/v4l2-ioctl.c:3381
 v4l2_ioctl+0x1b7/0x250 drivers/media/v4l2-core/v4l2-dev.c:364
 v4l2_compat_ioctl32+0x23b/0x2a0 drivers/media/v4l2-core/v4l2-compat-ioctl32.c:1253
 __do_compat_sys_ioctl+0x255/0x2b0 fs/ioctl.c:968
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203
 entry_SYSENTER_compat_after_hwframe+0x70/0x82
RIP: 0023:0xf7fcb549
Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f7fc65cc EFLAGS: 00000296 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00000000c04c565d
RDX: 0000000020000040 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess):
   0:	03 74 c0 01          	add    0x1(%rax,%rax,8),%esi
   4:	10 05 03 74 b8 01    	adc    %al,0x1b87403(%rip)        # 0x1b8740d
   a:	10 06                	adc    %al,(%rsi)
   c:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
  10:	10 07                	adc    %al,(%rdi)
  12:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
  16:	10 08                	adc    %cl,(%rax)
  18:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1c:	00 00                	add    %al,(%rax)
  1e:	00 00                	add    %al,(%rax)
  20:	00 51 52             	add    %dl,0x52(%rcx)
  23:	55                   	push   %rbp
  24:	89 e5                	mov    %esp,%ebp
  26:	0f 34                	sysenter
  28:	cd 80                	int    $0x80
* 2a:	5d                   	pop    %rbp <-- trapping instruction
  2b:	5a                   	pop    %rdx
  2c:	59                   	pop    %rcx
  2d:	c3                   	retq
  2e:	90                   	nop
  2f:	90                   	nop
  30:	90                   	nop
  31:	90                   	nop
  32:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi
  39:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi