Re: [PATCH] net: xfrm: fix a race condition during allocing spi

On Thu, Oct 22, 2020 at 01:53:15PM +0800, zhuoliang.zhang wrote: > > there are 2 related hash lists : net->xfrm.state_bydst and > net->xfrm.state_byspi: > > 1. a new state x is alloced in xfrm_state_alloc() and added into the > bydst hlist in __find_acq_core() on the LHS; > 2. on the RHS,

Re: [PATCH] net: xfrm: fix a race condition during allocing spi

On Tue, Oct 20, 2020 at 04:18:00PM +0800, Zhuoliang Zhang wrote: > From: zhuoliang zhang > > we found that the following race condition exists in > xfrm_alloc_userspi flow: > > user threadstate_hash_work thread >

[PATCH] net: xfrm: fix a race condition during allocing spi

From: zhuoliang zhang we found that the following race condition exists in xfrm_alloc_userspi flow: user threadstate_hash_work thread xfrm_alloc_userspi() __find_acq_core() /*alloc new xfrm_state:x*/