------------[ cut here ]------------ WARNING: CPU: 1 PID: 18837 at drivers/media/v4l2-core/videobuf2-core.c:1663 __vb2_queue_cancel+0x5a3/0x890 drivers/media/v4l2-core/videobuf2-core.c:1663 kobject: 'loop5' (ffff8880a4ad49a0): kobject_uevent_env Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 18837 Comm: syz-executor.3 Not tainted 4.14.129 #23 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x138/0x19c lib/dump_stack.c:53 panic+0x1f2/0x426 kernel/panic.c:182 __warn.cold+0x2f/0x36 kernel/panic.c:546 kobject: 'loop5' (ffff8880a4ad49a0): fill_kobj_path: path = '/devices/virtual/block/loop5' report_bug+0x216/0x254 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:177 [inline] fixup_bug arch/x86/kernel/traps.c:172 [inline] do_error_trap+0x1bb/0x310 arch/x86/kernel/traps.c:295 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:960 RIP: 0010:__vb2_queue_cancel+0x5a3/0x890 drivers/media/v4l2-core/videobuf2-core.c:1663 RSP: 0000:ffff88804b40fc10 EFLAGS: 00010297 RAX: ffff888090f04700 RBX: ffffffff842e38a0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffff88804b40fc80 R08: dffffc0000000000 R09: ffffffff88c7ca98 R10: ffff88804b40fba8 R11: ffff888090f04700 R12: ffff88809ec96a9c R13: ffff88809ec96b70 R14: ffff88809ec96b78 R15: ffff88809ec96898 vb2_core_streamoff+0x52/0x110 drivers/media/v4l2-core/videobuf2-core.c:1788 __vb2_cleanup_fileio+0x78/0x150 drivers/media/v4l2-core/videobuf2-core.c:2313 vb2_core_queue_release+0x1d/0x80 drivers/media/v4l2-core/videobuf2-core.c:2040 vb2_queue_release drivers/media/v4l2-core/videobuf2-v4l2.c:669 [inline] _vb2_fop_release+0x1cf/0x2a0 drivers/media/v4l2-core/videobuf2-v4l2.c:840 vb2_fop_release+0x75/0xc0 drivers/media/v4l2-core/videobuf2-v4l2.c:854 vivid_fop_release+0x180/0x3f0 drivers/media/platform/vivid/vivid-core.c:486 v4l2_release+0xf9/0x190 drivers/media/v4l2-core/v4l2-dev.c:446 __fput+0x275/0x7a0 fs/file_table.c:210 ____fput+0x16/0x20 fs/file_table.c:244 task_work_run+0x114/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x1da/0x220 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4bc/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x412fb1 RSP: 002b:00007ffdc2bc2200 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000412fb1 RDX: 0000001b2ef20000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000001 R08: ffffffff817ba279 R09: 000000006e783fbf R10: 00007ffdc2bc22e0 R11: 0000000000000293 R12: 00000000007601b0 R13: 000000000007e227 R14: 000000000007e254 R15: 000000000075bf2c Kernel Offset: disabled Rebooting in 86400 seconds..