------------[ cut here ]------------
WARNING: CPU: 0 PID: 2062 at fs/attr.c:211 notify_change2+0xae2/0xd90 fs/attr.c:211
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 2062 Comm: syz-executor189 Not tainted 4.9.168+ #39
 ffff8801ce41f430 ffffffff81b4f5d1 0000000000000000 ffffffff82a39ba0
 00000000ffffffff 0000000000000000 0000000000000009 ffff8801ce41f510
 ffffffff813f945a 0000000041b58ab3 ffffffff82e2ec5a ffffffff813f9281
Call Trace:
 [<00000000ba468a73>] __dump_stack lib/dump_stack.c:15 [inline]
 [<00000000ba468a73>] dump_stack+0xc1/0x120 lib/dump_stack.c:51
 [<00000000ac682659>] panic+0x1d9/0x3bd kernel/panic.c:180
 [<0000000056e31a57>] __warn.cold+0x2f/0x2f kernel/panic.c:546
 [<00000000bce12bbe>] warn_slowpath_null+0x2d/0x40 kernel/panic.c:589
 [<0000000010c8e414>] notify_change2+0xae2/0xd90 fs/attr.c:211
 [<00000000b18d91ea>] __remove_privs fs/inode.c:1793 [inline]
 [<00000000b18d91ea>] file_remove_privs+0x285/0x4b0 fs/inode.c:1815
 [<00000000b687fb30>] __generic_file_write_iter+0x157/0x530 mm/filemap.c:3010
 [<000000007c489216>] blkdev_write_iter fs/block_dev.c:1726 [inline]
 [<000000007c489216>] blkdev_write_iter+0x1bb/0x370 fs/block_dev.c:1706
 [<00000000a48d613e>] vfs_iter_write+0x2e2/0x580 fs/read_write.c:390
 [<00000000116be576>] iter_file_splice_write+0x5a9/0xb10 fs/splice.c:768
 [<00000000d19489c9>] do_splice_from fs/splice.c:870 [inline]
 [<00000000d19489c9>] direct_splice_actor+0x126/0x1a0 fs/splice.c:1037
 [<00000000589e8b87>] splice_direct_to_actor+0x2c8/0x820 fs/splice.c:992
 [<00000000a3165c12>] do_splice_direct+0x1a5/0x260 fs/splice.c:1080
 [<00000000e466a664>] do_sendfile+0x503/0xc00 fs/read_write.c:1401
 [<00000000d51a4bc2>] SYSC_sendfile64 fs/read_write.c:1462 [inline]
 [<00000000d51a4bc2>] SyS_sendfile64+0x145/0x160 fs/read_write.c:1448
 [<000000001bcca029>] do_syscall_64+0x1ad/0x570 arch/x86/entry/common.c:285
 [<0000000053a6e299>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Kernel Offset: disabled
Rebooting in 86400 seconds..