From: Ingo Molnar Date: Fri, 28 Apr 2006 22:30:03 +0000 (-0700) Subject: [XFRM]: fix incorrect xfrm_state_afinfo_lock use X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f3111502c065d32dcb021f55e30398aaebd8fb0f;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git [XFRM]: fix incorrect xfrm_state_afinfo_lock use xfrm_state_afinfo_lock can be read-locked from bh context, so take it in a bh-safe manner in xfrm_state_register_afinfo() and xfrm_state_unregister_afinfo(). Found by the lock validator. Signed-off-by: Ingo Molnar Signed-off-by: David S. Miller --- diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c index 3dc3e1f3b7aa..93a2f36ad3db 100644 --- a/net/xfrm/xfrm_state.c +++ b/net/xfrm/xfrm_state.c @@ -1061,7 +1061,7 @@ int xfrm_state_register_afinfo(struct xfrm_state_afinfo *afinfo) return -EINVAL; if (unlikely(afinfo->family >= NPROTO)) return -EAFNOSUPPORT; - write_lock(&xfrm_state_afinfo_lock); + write_lock_bh(&xfrm_state_afinfo_lock); if (unlikely(xfrm_state_afinfo[afinfo->family] != NULL)) err = -ENOBUFS; else { @@ -1069,7 +1069,7 @@ int xfrm_state_register_afinfo(struct xfrm_state_afinfo *afinfo) afinfo->state_byspi = xfrm_state_byspi; xfrm_state_afinfo[afinfo->family] = afinfo; } - write_unlock(&xfrm_state_afinfo_lock); + write_unlock_bh(&xfrm_state_afinfo_lock); return err; } EXPORT_SYMBOL(xfrm_state_register_afinfo); @@ -1081,7 +1081,7 @@ int xfrm_state_unregister_afinfo(struct xfrm_state_afinfo *afinfo) return -EINVAL; if (unlikely(afinfo->family >= NPROTO)) return -EAFNOSUPPORT; - write_lock(&xfrm_state_afinfo_lock); + write_lock_bh(&xfrm_state_afinfo_lock); if (likely(xfrm_state_afinfo[afinfo->family] != NULL)) { if (unlikely(xfrm_state_afinfo[afinfo->family] != afinfo)) err = -EINVAL; @@ -1091,7 +1091,7 @@ int xfrm_state_unregister_afinfo(struct xfrm_state_afinfo *afinfo) afinfo->state_bydst = NULL; } } - write_unlock(&xfrm_state_afinfo_lock); + write_unlock_bh(&xfrm_state_afinfo_lock); return err; } EXPORT_SYMBOL(xfrm_state_unregister_afinfo);