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WARNING: CPU: 0 PID: 11316 at fs/attr.c:213 notify_change2+0xae4/0xdd0 fs/attr.c:213
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 11316 Comm: syz-executor7 Not tainted 4.14.67+ #1
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0xb9/0x11b lib/dump_stack.c:53
 panic+0x1bf/0x3a4 kernel/panic.c:181
 __warn.cold.7+0x148/0x185 kernel/panic.c:542
 report_bug+0x1f7/0x26c lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 do_error_trap+0x1ba/0x2c0 arch/x86/kernel/traps.c:295
 invalid_op+0x18/0x40 arch/x86/entry/entry_64.S:944
RIP: 0010:notify_change2+0xae4/0xdd0 fs/attr.c:213
RSP: 0018:ffff8801a3b3f5a0 EFLAGS: 00010212
RAX: 0000000000040000 RBX: 0000000000004200 RCX: 00000000000346d4
RDX: ffffffff815b8234 RSI: ffffc9000652f000 RDI: ffff8801b6bced38
RBP: ffff8801a3b3f608 R08: 0000000000000001 R09: 0000000000000000
R10: ffff8801d616ceb0 R11: 0000000000000001 R12: ffff8801b6bcec58
R13: ffff8801a3b3f638 R14: ffff8801d938eb00 R15: ffff8801b6bcec64
 __remove_privs fs/inode.c:1806 [inline]
 file_remove_privs+0x25c/0x440 fs/inode.c:1828
 __generic_file_write_iter+0x155/0x540 mm/filemap.c:3108
 blkdev_write_iter+0x1fa/0x3d0 fs/block_dev.c:1906
 call_write_iter include/linux/fs.h:1782 [inline]
 do_iter_readv_writev+0x3a4/0x560 fs/read_write.c:678
 do_iter_write+0x156/0x530 fs/read_write.c:957
 vfs_iter_write+0x70/0xa0 fs/read_write.c:970
 iter_file_splice_write+0x5b4/0xab0 fs/splice.c:749
 do_splice_from fs/splice.c:851 [inline]
 direct_splice_actor+0x116/0x160 fs/splice.c:1018
 splice_direct_to_actor+0x28c/0x750 fs/splice.c:973
 do_splice_direct+0x17b/0x220 fs/splice.c:1061
 do_sendfile+0x4a1/0xb50 fs/read_write.c:1438
 SYSC_sendfile64 fs/read_write.c:1493 [inline]
 SyS_sendfile64+0xab/0x140 fs/read_write.c:1485
 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x457089
RSP: 002b:00007f92a300cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f92a300d6d4 RCX: 0000000000457089
RDX: 0000000020000100 RSI: 0000000000000003 RDI: 0000000000000003
RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004d4198 R14: 00000000004c8a02 R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: 0xfc00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
Rebooting in 86400 seconds..