------------[ cut here ]------------
WARNING: CPU: 1 PID: 5230 at fs/attr.c:211 notify_change2+0xae2/0xd90 fs/attr.c:211
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 5230 Comm: syz-executor.1 Not tainted 4.9.180+ #3
 ffff8801a45a7430 ffffffff81b577f1 0000000000000000 ffffffff82a3a960
 00000000ffffffff 0000000000000001 0000000000000009 ffff8801a45a7510
 ffffffff813fd2fa 0000000041b58ab3 ffffffff82e30d0a ffffffff813fd121
Call Trace:
 [<00000000706eefcc>] __dump_stack lib/dump_stack.c:15 [inline]
 [<00000000706eefcc>] dump_stack+0xc1/0x120 lib/dump_stack.c:51
 [<00000000d808d731>] panic+0x1d9/0x3bd kernel/panic.c:180
 [<000000007f2ca786>] __warn.cold+0x2f/0x2f kernel/panic.c:546
 [<000000005f4fecc8>] warn_slowpath_null+0x2d/0x40 kernel/panic.c:589
 [<0000000050c4b3f4>] notify_change2+0xae2/0xd90 fs/attr.c:211
 [<00000000b011d3c1>] __remove_privs fs/inode.c:1793 [inline]
 [<00000000b011d3c1>] file_remove_privs+0x285/0x4b0 fs/inode.c:1815
 [<00000000b5780309>] __generic_file_write_iter+0x157/0x530 mm/filemap.c:3010
 [<00000000fa397144>] blkdev_write_iter fs/block_dev.c:1726 [inline]
 [<00000000fa397144>] blkdev_write_iter+0x1bb/0x370 fs/block_dev.c:1706
 [<00000000cfdeb0e5>] vfs_iter_write+0x2e2/0x580 fs/read_write.c:390
 [<000000006be54cf5>] iter_file_splice_write+0x5a9/0xb10 fs/splice.c:768
 [<00000000fccda294>] do_splice_from fs/splice.c:870 [inline]
 [<00000000fccda294>] direct_splice_actor+0x126/0x1a0 fs/splice.c:1037
 [<000000003607506a>] splice_direct_to_actor+0x2c8/0x820 fs/splice.c:992
 [<00000000b31a560a>] do_splice_direct+0x1a5/0x260 fs/splice.c:1080
 [<000000000b2bfd8d>] do_sendfile+0x503/0xc00 fs/read_write.c:1401
 [<0000000075b9c105>] SYSC_sendfile64 fs/read_write.c:1462 [inline]
 [<0000000075b9c105>] SyS_sendfile64+0x145/0x160 fs/read_write.c:1448
 [<000000007b1aaca7>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288
 [<000000000d847f05>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Kernel Offset: disabled
Rebooting in 86400 seconds..