================================================================== BUG: KASAN: use-after-scope in debug_lockdep_rcu_enabled.part.0+0x50/0x60 kernel/rcu/update.c:249 Read of size 4 at addr ffff8880a945eabc by task `9#(<kE>9hA/-2122188634 CPU: 0 PID: -2122188634 Comm: EO2 Not tainted 5.0.0-rc1+ #19 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ------------[ cut here ]------------ Bad or missing usercopy whitelist? Kernel memory overwrite attempt detected to SLAB object 'task_struct' (offset 1344, size 8)! WARNING: CPU: 0 PID: -1455036288 at mm/usercopy.c:78 usercopy_warn+0xeb/0x110 mm/usercopy.c:78 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: -1455036288 Comm: EO2 Not tainted 5.0.0-rc1+ #19 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: Kernel Offset: disabled Rebooting in 86400 seconds..