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WARNING: CPU: 0 PID: 26649 at fs/attr.c:211 notify_change2+0xae2/0xd90 fs/attr.c:211
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 26649 Comm: syz-executor.1 Not tainted 4.9.180+ #3
 ffff8801a86cf890 ffffffff81b577f1 0000000000000000 ffffffff82a3a960
 00000000ffffffff 0000000000000000 0000000000000009 ffff8801a86cf970
 ffffffff813fd2fa 0000000041b58ab3 ffffffff82e30d0a ffffffff813fd121
Call Trace:
 [<00000000dc98cf81>] __dump_stack lib/dump_stack.c:15 [inline]
 [<00000000dc98cf81>] dump_stack+0xc1/0x120 lib/dump_stack.c:51
 [<00000000145addd9>] panic+0x1d9/0x3bd kernel/panic.c:180
 [<000000008ead2218>] __warn.cold+0x2f/0x2f kernel/panic.c:546
 [<000000007b745c6b>] warn_slowpath_null+0x2d/0x40 kernel/panic.c:589
 [<00000000f62eff57>] notify_change2+0xae2/0xd90 fs/attr.c:211
 [<00000000bd909b57>] __remove_privs fs/inode.c:1793 [inline]
 [<00000000bd909b57>] file_remove_privs+0x285/0x4b0 fs/inode.c:1815
 [<00000000c0a5fc8a>] __generic_file_write_iter+0x157/0x530 mm/filemap.c:3010
 [<00000000c675fa27>] blkdev_write_iter fs/block_dev.c:1726 [inline]
 [<00000000c675fa27>] blkdev_write_iter+0x1bb/0x370 fs/block_dev.c:1706
 [<000000004a71f03d>] new_sync_write fs/read_write.c:498 [inline]
 [<000000004a71f03d>] __vfs_write+0x3c1/0x560 fs/read_write.c:511
 [<0000000097495795>] vfs_write+0x185/0x520 fs/read_write.c:559
 [<000000005a290d24>] SYSC_write fs/read_write.c:606 [inline]
 [<000000005a290d24>] SyS_write+0xdc/0x1c0 fs/read_write.c:598
 [<00000000d8b345f6>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288
 [<00000000bfe99e35>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Kernel Offset: disabled
Rebooting in 86400 seconds..