------------[ cut here ]------------ WARNING: CPU: 0 PID: 10582 at fs/ext4/inode.c:951 ext4_dio_get_block_overwrite fs/ext4/inode.c:951 [inline] WARNING: CPU: 0 PID: 10582 at fs/ext4/inode.c:951 ext4_dio_get_block_overwrite+0x8d/0xc0 fs/ext4/inode.c:936 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 10582 Comm: syz-executor.0 Not tainted 4.14.140+ #39 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xca/0x134 lib/dump_stack.c:53 panic+0x1ea/0x3d3 kernel/panic.c:182 __warn.cold+0x2f/0x3a kernel/panic.c:546 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+0x1bf/0x2d0 arch/x86/kernel/traps.c:295 invalid_op+0x18/0x40 arch/x86/entry/entry_64.S:963 RIP: 0010:ext4_dio_get_block_overwrite fs/ext4/inode.c:951 [inline] RIP: 0010:ext4_dio_get_block_overwrite+0x8d/0xc0 fs/ext4/inode.c:936 RSP: 0018:ffff88819ef47068 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffff88819ef47210 RCX: 0000000000040000 RDX: ffffffff8175dc6d RSI: ffffc9000bc2c000 RDI: ffff8881d591b318 RBP: 0000000000000050 R08: 0000000000000001 R09: 0000000000000001 R10: fffffbfff1545b05 R11: ffffffff8aa2d82b R12: 0000000000000000 R13: ffff88817781de00 R14: 0000000000000050 R15: ffff88819d58e700 get_more_blocks fs/direct-io.c:718 [inline] do_direct_IO fs/direct-io.c:1003 [inline] do_blockdev_direct_IO fs/direct-io.c:1336 [inline] __blockdev_direct_IO+0x30bd/0xe24e fs/direct-io.c:1422 ext4_direct_IO_write fs/ext4/inode.c:3716 [inline] ext4_direct_IO+0xd32/0x2820 fs/ext4/inode.c:3869 generic_file_direct_write+0x1e4/0x430 mm/filemap.c:3035 __generic_file_write_iter+0x209/0x550 mm/filemap.c:3214 ext4_file_write_iter+0x58f/0xdb0 fs/ext4/file.c:268 call_write_iter include/linux/fs.h:1788 [inline] do_iter_readv_writev+0x379/0x580 fs/read_write.c:679 do_iter_write fs/read_write.c:958 [inline] do_iter_write+0x152/0x550 fs/read_write.c:939 vfs_iter_write+0x70/0xa0 fs/read_write.c:971 iter_file_splice_write+0x560/0xa50 fs/splice.c:749 do_splice_from fs/splice.c:851 [inline] direct_splice_actor+0x118/0x160 fs/splice.c:1018 splice_direct_to_actor+0x292/0x760 fs/splice.c:973 do_splice_direct+0x177/0x240 fs/splice.c:1061 do_sendfile+0x493/0xb20 fs/read_write.c:1445 SYSC_sendfile64 fs/read_write.c:1506 [inline] SyS_sendfile64+0x11f/0x140 fs/read_write.c:1492 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 RSP: 002b:00007f5b2fe63c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000459879 RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000006 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000008800000 R11: 0000000000000246 R12: 00007f5b2fe646d4 R13: 00000000004c7065 R14: 00000000004dc6d0 R15: 00000000ffffffff Kernel Offset: 0x7200000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) Rebooting in 86400 seconds..