kernel panic: stack is corrupted in rcu_irq

[upstream] kernel panic: stack is corrupted in rcu_irq_enter
Status: internal: reported on 2019/01/15 23:34
Reported-by: syzbot+@syzkaller.appspotmail.com
Fix commit: 44039e00 fou6: Prevent unbounded recursion in GUE error handler
Patched on: [ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-leak ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce], missing on: [ci-upstream-kmsan-gce]
First crash: 34d, last: 34d

Sample crash report:

Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: rcu_irq_enter+0x2f9/0x300 kernel/rcu/tree.c:902
CPU: 1 PID: 8150 Comm: syz-executor4 Not tainted 5.0.0-rc2+ #26
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
Kernel Offset: disabled
Rebooting in 86400 seconds..

All crashes (1):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro
ci-upstream-kasan-gce	2019/01/15 22:33	upstream	fe76fc6a	79cb1a7c	.config	log	report