------------[ cut here ]------------ WARNING: CPU: 0 PID: 14272 at drivers/dma-buf/dma-buf.c:1039 dma_buf_vunmap+0x181/0x1f0 drivers/dma-buf/dma-buf.c:1039 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 14272 Comm: syz-executor.5 Not tainted 4.14.173-syzkaller #0 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+0x13e/0x194 lib/dump_stack.c:58 panic+0x1f9/0x42d kernel/panic.c:183 __warn.cold+0x2f/0x30 kernel/panic.c:547 report_bug+0x20a/0x248 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+0x195/0x2d0 arch/x86/kernel/traps.c:295 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:963 RIP: 0010:dma_buf_vunmap+0x181/0x1f0 drivers/dma-buf/dma-buf.c:1039 RSP: 0018:ffff88804dd17c48 EFLAGS: 00010297 RAX: ffff888079d2e600 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffc900130d0000 RDI: 0000000000000000 RBP: ffffc900130d0000 R08: dffffc0000000000 R09: ffffffff8a07ada0 R10: ffff88804dd17d50 R11: ffff888079d2e600 R12: ffffc900130d0000 R13: ffff888097c532a8 R14: ffff888091ebf780 R15: 0000000000000000 vb2_vmalloc_detach_dmabuf+0x57/0x80 drivers/media/v4l2-core/videobuf2-vmalloc.c:407 __vb2_plane_dmabuf_put.isra.0+0x10b/0x2e0 drivers/media/v4l2-core/videobuf2-core.c:273 __vb2_buf_dmabuf_put drivers/media/v4l2-core/videobuf2-core.c:289 [inline] __vb2_free_mem drivers/media/v4l2-core/videobuf2-core.c:411 [inline] __vb2_queue_free+0x5f5/0x7b0 drivers/media/v4l2-core/videobuf2-core.c:454 vb2_core_queue_release+0x5b/0x70 drivers/media/v4l2-core/videobuf2-core.c:2043 vb2_queue_release drivers/media/v4l2-core/videobuf2-v4l2.c:669 [inline] _vb2_fop_release+0x1c1/0x280 drivers/media/v4l2-core/videobuf2-v4l2.c:840 vivid_fop_release+0x17d/0x3e0 drivers/media/platform/vivid/vivid-core.c:486 v4l2_release+0xf4/0x190 drivers/media/v4l2-core/v4l2-dev.c:446 __fput+0x25f/0x790 fs/file_table.c:210 task_work_run+0x113/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x1d6/0x220 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+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4163e1 RSP: 002b:00007ffdca697ad0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00000000004163e1 RDX: 0000001b2cb20000 RSI: 0000000000001904 RDI: 0000000000000003 RBP: 0000000000000001 R08: 00000000f1dcf908 R09: 00ffffffffffffff R10: 00007ffdca697bb0 R11: 0000000000000293 R12: 000000000076bf00 R13: 0000000000770ba0 R14: 0000000000041e17 R15: 000000000076bf0c Kernel Offset: disabled Rebooting in 86400 seconds..