------------[ cut here ]------------
WARNING: CPU: 1 PID: 9658 at fs/direct-io.c:293 dio_complete+0x671/0x800 fs/direct-io.c:293
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 9658 Comm: syz-executor.3 Not tainted 4.14.112 #2
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+0x1f2/0x438 kernel/panic.c:182
 __warn.cold+0x2f/0x34 kernel/panic.c:546
 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
kobject: 'loop5' (ffff8880a4aceae0): kobject_uevent_env
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:944
RIP: 0010:dio_complete+0x671/0x800 fs/direct-io.c:293
kobject: 'loop5' (ffff8880a4aceae0): fill_kobj_path: path = '/devices/virtual/block/loop5'
RSP: 0018:ffff8880611f7678 EFLAGS: 00010216
RAX: 0000000000040000 RBX: 00000000000bfe00 RCX: ffffc9000aa83000
RDX: 000000000001092c RSI: ffffffff819a9291 RDI: ffff8880890de1fc
RBP: ffff8880611f76c0 R08: ffff888061b6a440 R09: 0000000000000003
R10: 0000000000000000 R11: ffff888061b6a440 R12: ffff888061133a80
R13: 00000000000bfe00 R14: ffff8880890de3f8 R15: 0000000000000000
 do_blockdev_direct_IO+0x530e/0x7fc0 fs/direct-io.c:1374
kobject: 'loop5' (ffff8880a4aceae0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4aceae0): fill_kobj_path: path = '/devices/virtual/block/loop5'
 __blockdev_direct_IO+0xa1/0xd0 fs/direct-io.c:1400
 ext4_direct_IO_write fs/ext4/inode.c:3697 [inline]
 ext4_direct_IO+0x70d/0x1890 fs/ext4/inode.c:3827
 generic_file_direct_write+0x1ec/0x430 mm/filemap.c:2927
 __generic_file_write_iter+0x2bc/0x5b0 mm/filemap.c:3106
 ext4_file_write_iter+0x2c0/0xfd0 fs/ext4/file.c:264
 call_write_iter include/linux/fs.h:1774 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x4ae/0x6c0 fs/read_write.c:482
 vfs_write+0x198/0x500 fs/read_write.c:544
 SYSC_write fs/read_write.c:589 [inline]
 SyS_write+0xb8/0x180 fs/read_write.c:581
 do_syscall_64+0x1eb/0x630 arch/x86/entry/common.c:289
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x458c29
RSP: 002b:00007f588e74ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458c29
RDX: 00000000000bfe00 RSI: 0000000020000200 RDI: 0000000000000007
RBP: 000000000073c040 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f588e74b6d4
R13: 00000000004c86c5 R14: 00000000004dee40 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..