Hello, syzbot found the following issue on: HEAD commit: 97ee9d1c1696 Merge tag 'block-6.1-2022-12-02' of git://git.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=13ee14ad880000 kernel config: https://syzkaller.appspot.com/x/.config?x=cc4b2e0a8e8a8366 dashboard link: https://syzkaller.appspot.com/bug?extid=59a71007ccac79e8bb69 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12e4c55b880000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=129047c3880000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/164011fb271c/disk-97ee9d1c.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/46378a12aae7/vmlinux-97ee9d1c.xz kernel image: https://storage.googleapis.com/syzbot-assets/72c541565fa3/bzImage-97ee9d1c.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+59a71007ccac79e8bb69@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ get_vaddr_frames() cannot follow VM_IO mapping WARNING: CPU: 0 PID: 3635 at drivers/media/common/videobuf2/frame_vector.c:59 get_vaddr_frames drivers/media/common/videobuf2/frame_vector.c:59 [inline] WARNING: CPU: 0 PID: 3635 at drivers/media/common/videobuf2/frame_vector.c:59 get_vaddr_frames+0x1f2/0x200 drivers/media/common/videobuf2/frame_vector.c:35 Modules linked in: CPU: 0 PID: 3635 Comm: syz-executor248 Not tainted 6.1.0-rc7-syzkaller-00190-g97ee9d1c1696 #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:59 [inline] RIP: 0010:get_vaddr_frames+0x1f2/0x200 drivers/media/common/videobuf2/frame_vector.c:35 Code: ae 4d fb e9 0b ff ff ff e8 bb ae 4d fb e9 d2 fe ff ff e8 c1 d5 00 fb 48 c7 c7 60 52 1b 8b c6 05 ee 29 bd 07 01 e8 fd c0 27 03 <0f> 0b e9 56 ff ff ff 0f 1f 80 00 00 00 00 41 57 41 56 41 55 41 54 RSP: 0018:ffffc90003c1f820 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff88801ff1f000 RCX: 0000000000000000 RDX: ffff8880177f3a80 RSI: ffffffff8165749c RDI: fffff52000783ef6 RBP: ffff88801ff1f004 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000000 R12: 00000000fffffff2 R13: 0000000000000000 R14: 0000000000000000 R15: ffff888073a41000 FS: 0000555556e79300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000005d84c8 CR3: 000000002789f000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> vb2_create_framevec+0x59/0xd0 drivers/media/common/videobuf2/videobuf2-memops.c:50 vb2_vmalloc_get_userptr+0x128/0x520 drivers/media/common/videobuf2/videobuf2-vmalloc.c:88 __prepare_userptr+0x31e/0x1580 drivers/media/common/videobuf2/videobuf2-core.c:1159 __buf_prepare+0x5e4/0x780 drivers/media/common/videobuf2/videobuf2-core.c:1401 vb2_core_prepare_buf+0xe4/0x2c0 drivers/media/common/videobuf2/videobuf2-core.c:1540 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:2148 [inline] v4l_prepare_buf+0x96/0xc0 drivers/media/v4l2-core/v4l2-ioctl.c:2142 __video_do_ioctl+0xb9d/0xe20 drivers/media/v4l2-core/v4l2-ioctl.c:3037 video_usercopy+0x3b8/0x17f0 drivers/media/v4l2-core/v4l2-ioctl.c:3384 v4l2_ioctl+0x1b7/0x250 drivers/media/v4l2-core/v4l2-dev.c:364 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x197/0x210 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f4abf6bcc49 Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffe26bf128 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4abf6bcc49 RDX: 0000000020000300 RSI: 00000000c058565d RDI: 0000000000000003 RBP: 00007f4abf680df0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4abf680e80 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 </TASK> --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
