WARNING: bad usercopy in corrupted

Status: closed as invalid on 2018/07/29 11:55
Subsystems: hardening mm
[Documentation on labels]
First crash: 2929d, last: 2929d
▶ ▼ Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING: bad usercopy in corrupted (2) -1 syz, C done 12 2761d 2808d 11/29 fixed on 2019/03/20 20:32

Sample crash report:
IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
8021q: adding VLAN 0 to HW filter on device team0
------------[ cut here ]------------
Bad or missing usercopy whitelist? Kernel memory exposure attempt detected from SLAB object 'kvm_vcpu' (offset 23192, size 8)!
WARNING: CPU: 0 PID: 4653 at mm/usercopy.c:81 usercopy_warn+0xf5/0x120 mm/usercopy.c:76
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 4653 Comm: syz-executor0 Not tainted 4.18.0-rc6+ #165
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/07/28 01:50 upstream 864af0d40cdc ebf656d7 .config console log report syz ci-upstream-kasan-gce
2018/07/28 01:49 upstream 864af0d40cdc ebf656d7 .config console log report syz ci-upstream-kasan-gce-root
* Struck through repros no longer work on HEAD.