divide error: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 16390 Comm: syz-executor1 Not tainted 4.20.0-rc5+ #362 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:valid_cvt_gtf_timings drivers/media/platform/vivid/vivid-vid-cap.c:1643 [inline] RIP: 0010:vivid_vid_cap_s_dv_timings+0x60e/0x11e0 drivers/media/platform/vivid/vivid-vid-cap.c:1674 Code: c6 84 c9 0f 95 c1 40 84 ce 0f 85 ce 0a 00 00 83 e0 07 38 c2 0f 9e c1 84 d2 0f 95 c0 84 c1 0f 85 b9 0a 00 00 48 8b 43 14 31 d2 <41> f7 f7 48 ba 00 00 00 00 00 fc ff df 4c 8d 7b 40 89 85 64 ff ff RSP: 0018:ffff88818bd8f628 EFLAGS: 00010246 RAX: 0000000000d59f80 RBX: ffff8881d8f04b00 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8881d8f04b14 RBP: ffff88818bd8f6e8 R08: 0000000000000001 R09: ffffed1039690024 R10: ffffed1039690024 R11: ffff8881cb480123 R12: ffff8881cb480080 R13: 1ffff110317b1ecc R14: 0000000000000000 R15: 0000000000000000 kobject: 'loop4' (00000000d2f42091): kobject_uevent_env FS: 00007f01acaa4700(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000001bf5fd0 CR3: 00000001813c2000 CR4: 00000000001426e0 kobject: 'loop4' (00000000d2f42091): fill_kobj_path: path = '/devices/virtual/block/loop4' DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vidioc_s_dv_timings+0xa4/0xc0 drivers/media/platform/vivid/vivid-core.c:323 kobject: 'loop0' (00000000c7d89086): kobject_uevent_env v4l_stub_s_dv_timings+0x4f/0x60 drivers/media/v4l2-core/v4l2-ioctl.c:2583 __video_do_ioctl+0x8b1/0x1050 drivers/media/v4l2-core/v4l2-ioctl.c:2853 video_usercopy+0x5c1/0x1760 drivers/media/v4l2-core/v4l2-ioctl.c:3035 kobject: 'loop0' (00000000c7d89086): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (000000005111f202): kobject_uevent_env kobject: 'loop3' (000000005111f202): fill_kobj_path: path = '/devices/virtual/block/loop3' video_ioctl2+0x2c/0x33 drivers/media/v4l2-core/v4l2-ioctl.c:3079 kobject: 'loop3' (000000005111f202): kobject_uevent_env v4l2_ioctl+0x154/0x1b0 drivers/media/v4l2-core/v4l2-dev.c:364 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0x1de/0x1790 fs/ioctl.c:696 kobject: 'loop3' (000000005111f202): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000b2aba1f2): kobject_uevent_env kobject: 'loop2' (00000000b2aba1f2): fill_kobj_path: path = '/devices/virtual/block/loop2' ksys_ioctl+0xa9/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 kobject: 'loop3' (000000005111f202): kobject_uevent_env do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 kobject: 'loop3' (000000005111f202): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000b2aba1f2): kobject_uevent_env entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457569 Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f01acaa3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 kobject: 'loop2' (00000000b2aba1f2): fill_kobj_path: path = '/devices/virtual/block/loop2' RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 RDX: 00000000200000c0 RSI: 00000000c0845657 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f01acaa46d4 R13: 00000000004c9990 R14: 00000000004d3350 R15: 00000000ffffffff Modules linked in: ---[ end trace 174bd52066bf6a0c ]--- kobject: 'loop3' (000000005111f202): kobject_uevent_env RIP: 0010:valid_cvt_gtf_timings drivers/media/platform/vivid/vivid-vid-cap.c:1643 [inline] RIP: 0010:vivid_vid_cap_s_dv_timings+0x60e/0x11e0 drivers/media/platform/vivid/vivid-vid-cap.c:1674 kobject: 'loop3' (000000005111f202): fill_kobj_path: path = '/devices/virtual/block/loop3' Code: c6 84 c9 0f 95 c1 40 84 ce 0f 85 ce 0a 00 00 83 e0 07 38 c2 0f 9e c1 84 d2 0f 95 c0 84 c1 0f 85 b9 0a 00 00 48 8b 43 14 31 d2 <41> f7 f7 48 ba 00 00 00 00 00 fc ff df 4c 8d 7b 40 89 85 64 ff ff kobject: 'loop2' (00000000b2aba1f2): kobject_uevent_env RSP: 0018:ffff88818bd8f628 EFLAGS: 00010246 kobject: 'loop2' (00000000b2aba1f2): fill_kobj_path: path = '/devices/virtual/block/loop2' RAX: 0000000000d59f80 RBX: ffff8881d8f04b00 RCX: 0000000000000001 kobject: 'loop3' (000000005111f202): kobject_uevent_env RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8881d8f04b14 kobject: 'loop3' (000000005111f202): fill_kobj_path: path = '/devices/virtual/block/loop3' RBP: ffff88818bd8f6e8 R08: 0000000000000001 R09: ffffed1039690024 kobject: 'loop2' (00000000b2aba1f2): kobject_uevent_env R10: ffffed1039690024 R11: ffff8881cb480123 R12: ffff8881cb480080 kobject: 'loop2' (00000000b2aba1f2): fill_kobj_path: path = '/devices/virtual/block/loop2' R13: 1ffff110317b1ecc R14: 0000000000000000 R15: 0000000000000000 FS: 00007f01acaa4700(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000625208 CR3: 00000001813c2000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400