From: Eric Dumazet
Date: Mon, 7 May 2018 09:02:25 -0700
> syzbot loves to set very small mtu on devices, since it brings joy.
> We must make llc_ui_sendmsg() fool proof.
This thing is just too smart for it's own good :)
> usercopy: Kernel memory overwrite attempt detected to wrapped address (o
syzbot loves to set very small mtu on devices, since it brings joy.
We must make llc_ui_sendmsg() fool proof.
usercopy: Kernel memory overwrite attempt detected to wrapped address (offset
0, size 18446612139802320068)!
kernel BUG at mm/usercopy.c:100!
invalid opcode: [#1] SMP KASAN
Dumping
