On Mon, 18 Oct 2021 17:04:19 +0300 Vlad Buslov wrote: > We got a use-after-free with very similar trace [0] during nightly > regression. The issue happens when ip link up/down state is flipped > several times in loop and doesn't reproduce for me manually. The fact > that it didn't reproduce for me after running test ten times suggests > that it is either very hard to reproduce or that it is a result of some > interaction between several tests in our suite. > > [0]: > > [ 3187.779569] mlx5_core 0000:08:00.0 enp8s0f0: Link up > [ 3187.890694] ================================================================== > [ 3187.892518] BUG: KASAN: use-after-free in __list_add_valid+0xc3/0xf0 > [ 3187.894132] Read of size 8 at addr ffff8881150b3fb8 by task ip/119618 Hm, not sure how similar it is. This one looks like channel was freed without deleting NAPI. Do you have list debug enabled?
