------------[ cut here ]------------
WARNING: CPU: 0 PID: 12644 at fs/attr.c:211 notify_change2+0xae2/0xd90 fs/attr.c:211
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 12644 Comm: syz-executor.1 Not tainted 4.9.182+ #1
 ffff880183c4f740 ffffffff81b57e21 0000000000000000 ffffffff82a3a960
 00000000ffffffff 0000000000000000 0000000000000009 ffff880183c4f820
 ffffffff813fd5da 0000000041b58ab3 ffffffff82e313da ffffffff813fd401
Call Trace:
 [<00000000bd6eb01f>] __dump_stack lib/dump_stack.c:15 [inline]
 [<00000000bd6eb01f>] dump_stack+0xc1/0x120 lib/dump_stack.c:51
 [<0000000039ef309f>] panic+0x1d9/0x3bd kernel/panic.c:180
 [<0000000012aea71b>] __warn.cold+0x2f/0x2f kernel/panic.c:546
 [<00000000e425ee8b>] warn_slowpath_null+0x2d/0x40 kernel/panic.c:589
 [<00000000a73faafd>] notify_change2+0xae2/0xd90 fs/attr.c:211
 [<0000000087d8f318>] __remove_privs fs/inode.c:1793 [inline]
 [<0000000087d8f318>] file_remove_privs+0x285/0x4b0 fs/inode.c:1815
 [<000000005f2134ac>] __generic_file_write_iter+0x157/0x530 mm/filemap.c:3010
 [<00000000a5d3e654>] blkdev_write_iter fs/block_dev.c:1726 [inline]
 [<00000000a5d3e654>] blkdev_write_iter+0x1bb/0x370 fs/block_dev.c:1706
 [<000000005f580680>] aio_write+0x2ea/0x530 fs/aio.c:1507
 [<00000000959d5963>] io_submit_one fs/aio.c:1588 [inline]
 [<00000000959d5963>] do_io_submit+0x74f/0x1120 fs/aio.c:1656
 [<00000000bbd89325>] SYSC_io_submit fs/aio.c:1681 [inline]
 [<00000000bbd89325>] SyS_io_submit+0x28/0x30 fs/aio.c:1678
 [<00000000a28bf90b>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288
 [<00000000d97ed2a4>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Kernel Offset: disabled
Rebooting in 86400 seconds..