------------[ cut here ]------------
WARNING: CPU: 1 PID: 24745 at fs/attr.c:211 notify_change2+0xae2/0xd90 fs/attr.c:211
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 24745 Comm: syz-executor.5 Not tainted 4.9.181+ #7
 ffff8801b010f700 ffffffff81b57db1 0000000000000000 ffffffff82a3a960
 00000000ffffffff 0000000000000001 0000000000000009 ffff8801b010f7e0
 ffffffff813fd56a 0000000041b58ab3 ffffffff82e311ea ffffffff813fd391
Call Trace:
 [<0000000005a3b7af>] __dump_stack lib/dump_stack.c:15 [inline]
 [<0000000005a3b7af>] dump_stack+0xc1/0x120 lib/dump_stack.c:51
 [<000000003de2af3b>] panic+0x1d9/0x3bd kernel/panic.c:180
 [<00000000ebcb0c4b>] __warn.cold+0x2f/0x2f kernel/panic.c:546
 [<00000000855e93d3>] warn_slowpath_null+0x2d/0x40 kernel/panic.c:589
 [<0000000074c35fe9>] notify_change2+0xae2/0xd90 fs/attr.c:211
 [<000000002a178a3a>] __remove_privs fs/inode.c:1793 [inline]
 [<000000002a178a3a>] file_remove_privs+0x285/0x4b0 fs/inode.c:1815
 [<000000006b2a7c8a>] __generic_file_write_iter+0x157/0x530 mm/filemap.c:3010
 [<000000002805f4e1>] blkdev_write_iter fs/block_dev.c:1726 [inline]
 [<000000002805f4e1>] blkdev_write_iter+0x1bb/0x370 fs/block_dev.c:1706
 [<000000009397644b>] do_iter_readv_writev+0x3d9/0x4b0 fs/read_write.c:698
 [<00000000c9a207b2>] do_readv_writev+0x2ed/0x7a0 fs/read_write.c:874
 [<0000000061b8125b>] vfs_writev+0x89/0xc0 fs/read_write.c:913
 [<00000000a7e8d520>] do_pwritev+0x19b/0x240 fs/read_write.c:1000
 [<00000000f29674e2>] SYSC_pwritev fs/read_write.c:1047 [inline]
 [<00000000f29674e2>] SyS_pwritev+0x31/0x40 fs/read_write.c:1042
 [<00000000a3b3edb4>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288
 [<0000000045222560>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Kernel Offset: disabled
Rebooting in 86400 seconds..