syzbot

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get_vaddr_frames() cannot follow VM_IO mapping
WARNING: CPU: 0 PID: 5049 at drivers/media/common/videobuf2/frame_vector.c:63 get_vaddr_frames drivers/media/common/videobuf2/frame_vector.c:63 [inline]
WARNING: CPU: 0 PID: 5049 at drivers/media/common/videobuf2/frame_vector.c:63 get_vaddr_frames+0x206/0x210 drivers/media/common/videobuf2/frame_vector.c:36
Modules linked in:
CPU: 0 PID: 5049 Comm: syz-executor138 Not tainted 6.5.0-next-20230907-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:get_vaddr_frames drivers/media/common/videobuf2/frame_vector.c:63 [inline]
RIP: 0010:get_vaddr_frames+0x206/0x210 drivers/media/common/videobuf2/frame_vector.c:36
Code: 8c fb fa e9 03 ff ff ff e8 07 8c fb fa e9 ca fe ff ff e8 1d c0 a5 fa 48 c7 c7 20 d6 62 8b c6 05 e0 fd d5 07 01 e8 da d5 6b fa <0f> 0b e9 50 ff ff ff 0f 1f 00 f3 0f 1e fa 41 57 41 56 41 55 41 54
RSP: 0018:ffffc90003847828 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff888024f20000 RCX: 0000000000000000
RDX: ffff88801fb81dc0 RSI: ffffffff814e0216 RDI: 0000000000000001
RBP: ffff888024f20004 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000001 R14: 00000000fffffff2 R15: 00000000002a302c
FS:  00005555571ef380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000005fdeb8 CR3: 0000000027ab2000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 vb2_create_framevec+0x64/0xd0 drivers/media/common/videobuf2/videobuf2-memops.c:52
 vb2_vmalloc_get_userptr+0x137/0x560 drivers/media/common/videobuf2/videobuf2-vmalloc.c:88
 __prepare_userptr.constprop.0+0x6ec/0x15d0 drivers/media/common/videobuf2/videobuf2-core.c:1180
 __buf_prepare+0x620/0x800 drivers/media/common/videobuf2/videobuf2-core.c:1422
 vb2_core_prepare_buf+0xe4/0x320 drivers/media/common/videobuf2/videobuf2-core.c:1561
 vb2_prepare_buf+0xfe/0x180 drivers/media/common/videobuf2/videobuf2-v4l2.c:738
 v4l2_m2m_prepare_buf+0xe8/0x1e0 drivers/media/v4l2-core/v4l2-mem2mem.c:823
 v4l_prepare_buf drivers/media/v4l2-core/v4l2-ioctl.c:2160 [inline]
 v4l_prepare_buf+0x94/0xc0 drivers/media/v4l2-core/v4l2-ioctl.c:2154
 __video_do_ioctl+0xaea/0xef0 drivers/media/v4l2-core/v4l2-ioctl.c:3048
 video_usercopy+0x4c2/0x15c0 drivers/media/v4l2-core/v4l2-ioctl.c:3389
 v4l2_ioctl+0x1bd/0x250 drivers/media/v4l2-core/v4l2-dev.c:364
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:871 [inline]
 __se_sys_ioctl fs/ioctl.c:857 [inline]
 __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f0ff5dcc1e9
Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe4be95528 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ffe4be956f8 RCX: 00007f0ff5dcc1e9
RDX: 00000000200002c0 RSI: 00000000c058565d RDI: 0000000000000003
RBP: 00007f0ff5e3f610 R08: 00007ffe4be956f8 R09: 00007ffe4be956f8
R10: 00236f656469762f R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffe4be956e8 R14: 0000000000000001 R15: 0000000000000001
 </TASK>