WARNING: CPU: 0 PID: 12480 at fs/attr.c:234 notify_change+0xca0/0xfb0 fs/attr.c:234
kobject: 'kvm' (000000009b732328): kobject_uevent_env
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 12480 Comm: syz-executor.4 Not tainted 4.19.50 #22
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x263/0x507 kernel/panic.c:185
kobject: 'kvm' (000000009b732328): fill_kobj_path: path = '/devices/virtual/misc/kvm'
 __warn.cold+0x20/0x4a kernel/panic.c:540
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x204/0x360 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1013
RIP: 0010:notify_change+0xca0/0xfb0 fs/attr.c:234
Code: f6 e6 09 00 e8 91 55 b9 ff 4c 8b 7c 24 20 4c 89 ff e8 04 f7 42 01 89 de 4c 89 ff e8 ea 12 43 01 e9 35 fa ff ff e8 70 55 b9 ff <0f> 0b e9 44 f4 ff ff e8 64 55 b9 ff 44 89 f3 4c 89 ea 48 b8 00 00
RSP: 0018:ffff8880511af9d0 EFLAGS: 00010212
RAX: 0000000000040000 RBX: 0000000000004200 RCX: ffffc9000e6bb000
RDX: 00000000000005ae RSI: ffffffff81b1b170 RDI: 0000000000000007
RBP: ffff8880511afa20 R08: ffff888089842680 R09: ffffed101486c0e9
R10: ffffed101486c0e8 R11: ffff8880a4360747 R12: ffff8880511afa70
R13: ffff8880a4360668 R14: 0000000000000000 R15: ffff8880511afb00
 __remove_privs fs/inode.c:1806 [inline]
 file_remove_privs+0x2a9/0x480 fs/inode.c:1828
 __generic_file_write_iter+0x15e/0x630 mm/filemap.c:3210
 blkdev_write_iter fs/block_dev.c:1924 [inline]
 blkdev_write_iter+0x233/0x440 fs/block_dev.c:1901
 call_write_iter include/linux/fs.h:1820 [inline]
 new_sync_write fs/read_write.c:474 [inline]
 __vfs_write+0x587/0x810 fs/read_write.c:487
 vfs_write+0x20c/0x560 fs/read_write.c:549
 ksys_write+0x14f/0x2d0 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x73/0xb0 fs/read_write.c:608
 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4592c9
Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fd346c49c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004592c9
RDX: 00000000000001d5 RSI: 0000000020000480 RDI: 0000000000000006
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd346c4a6d4
R13: 00000000004c913e R14: 00000000004e00b8 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..