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Code Issues Releases Activity

In device detach don't access ifnet structure unless device is

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attached. This fixes NULL pointer dereference when polling(9) is
active and unsupported hardware is detected in device attach.
This commit is contained in:
Pyun YongHyeon 2008-07-02 06:41:46 +00:00
parent 3021aef8c9
commit 81cf2eb6db
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=180173
1 changed files with 4 additions and 4 deletions
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8
sys/dev/re/if_re.c
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@ -1391,12 +1391,12 @@ re_detach(dev)
ifp = sc->rl_ifp;
KASSERT(mtx_initialized(&sc->rl_mtx), ("re mutex not initialized"));
#ifdef DEVICE_POLLING
if (ifp->if_capenable & IFCAP_POLLING)
ether_poll_deregister(ifp);
#endif
/* These should only be active if attach succeeded */
if (device_is_attached(dev)) {
#ifdef DEVICE_POLLING
if (ifp->if_capenable & IFCAP_POLLING)
ether_poll_deregister(ifp);
#endif
RL_LOCK(sc);
#if 0
sc->suspended = 1;