------------[ cut here ]------------
WARNING: CPU: 1 PID: 28934 at fs/ext4/inode.c:922 ext4_dio_get_block_overwrite fs/ext4/inode.c:922 [inline]
WARNING: CPU: 1 PID: 28934 at fs/ext4/inode.c:922 ext4_dio_get_block_overwrite+0x103/0x120 fs/ext4/inode.c:907
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 28934 Comm: syz-executor.5 Not tainted 4.9.189+ #22
 ffff880195d1eec8 ffffffff81b65c01 0000000000000000 ffffffff82a3b1c0
 00000000ffffffff 0000000000000001 0000000000000009 ffff880195d1efa8
 ffffffff813feb5a 0000000041b58ab3 ffffffff82e324bd ffffffff813fe981
Call Trace:
 [<000000007673d6b0>] __dump_stack lib/dump_stack.c:15 [inline]
 [<000000007673d6b0>] dump_stack+0xc1/0x120 lib/dump_stack.c:51
 [<0000000081f3c56f>] panic+0x1d9/0x3bd kernel/panic.c:180
 [<00000000f7c5987d>] __warn.cold+0x2f/0x2f kernel/panic.c:546
 [<000000009e85e248>] warn_slowpath_null+0x2d/0x40 kernel/panic.c:589
 [<00000000f4fa5c16>] ext4_dio_get_block_overwrite fs/ext4/inode.c:922 [inline]
 [<00000000f4fa5c16>] ext4_dio_get_block_overwrite+0x103/0x120 fs/ext4/inode.c:907
 [<00000000c727f472>] get_more_blocks fs/direct-io.c:654 [inline]
 [<00000000c727f472>] do_direct_IO fs/direct-io.c:956 [inline]
 [<00000000c727f472>] do_blockdev_direct_IO fs/direct-io.c:1275 [inline]
 [<00000000c727f472>] __blockdev_direct_IO+0x3232/0xd370 fs/direct-io.c:1361
 [<00000000c6df10fb>] ext4_direct_IO_write fs/ext4/inode.c:3504 [inline]
 [<00000000c6df10fb>] ext4_direct_IO+0xd45/0x29b0 fs/ext4/inode.c:3660
 [<000000008e82bad2>] generic_file_direct_write+0x293/0x520 mm/filemap.c:2841
 [<000000006526fc2d>] __generic_file_write_iter+0x20f/0x530 mm/filemap.c:3021
 [<00000000577c45ba>] ext4_file_write_iter+0x364/0xcd0 fs/ext4/file.c:165
 [<00000000d19beb7b>] vfs_iter_write+0x2e2/0x580 fs/read_write.c:390
 [<000000003c69e6a8>] iter_file_splice_write+0x5a9/0xb10 fs/splice.c:768
 [<00000000021b8bc9>] do_splice_from fs/splice.c:870 [inline]
 [<00000000021b8bc9>] direct_splice_actor+0x126/0x1a0 fs/splice.c:1037
 [<00000000ca8e785c>] splice_direct_to_actor+0x2c8/0x820 fs/splice.c:992
 [<0000000074df314f>] do_splice_direct+0x1a5/0x260 fs/splice.c:1080
 [<0000000018491bf6>] do_sendfile+0x503/0xc00 fs/read_write.c:1402
 [<000000004b69f44d>] SYSC_sendfile64 fs/read_write.c:1463 [inline]
 [<000000004b69f44d>] SyS_sendfile64+0x145/0x160 fs/read_write.c:1449
 [<000000005d3db8fc>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288
 [<000000009232ab1e>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Kernel Offset: disabled
Rebooting in 86400 seconds..