* [PATCH] drbd: Fix a use after free in get_initial_state
@ 2021-04-01 11:57 Lv Yunlong
2021-04-01 13:01 ` [Drbd-dev] " Christoph Böhmwalder
2021-04-02 5:09 ` kernel test robot
0 siblings, 2 replies; 6+ messages in thread
From: Lv Yunlong @ 2021-04-01 11:57 UTC (permalink / raw)
To: philipp.reisner, lars.ellenberg, axboe
Cc: drbd-dev, linux-block, linux-kernel, Lv Yunlong
In get_initial_state, it calls notify_initial_state_done(skb,..) if
cb->args[5]==1. I see that if genlmsg_put() failed in
notify_initial_state_done(), the skb will be freed by nlmsg_free(skb).
Then get_initial_state will goto out and the freed skb will be used by
return value skb->len.
My patch lets skb_len = skb->len and return the skb_len to avoid the uaf.
Fixes: a29728463b254 ("drbd: Backport the "events2" command")
Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn>
---
drivers/block/drbd/drbd_nl.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
index bf7de4c7b96c..474f84675d0a 100644
--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -4905,6 +4905,7 @@ static int get_initial_state(struct sk_buff *skb, struct netlink_callback *cb)
struct drbd_state_change *state_change = (struct drbd_state_change *)cb->args[0];
unsigned int seq = cb->args[2];
unsigned int n;
+ unsigned int skb_len = skb->len;
enum drbd_notification_type flags = 0;
/* There is no need for taking notification_mutex here: it doesn't
@@ -4915,7 +4916,7 @@ static int get_initial_state(struct sk_buff *skb, struct netlink_callback *cb)
cb->args[5]--;
if (cb->args[5] == 1) {
notify_initial_state_done(skb, seq);
- goto out;
+ return skb_len;
}
n = cb->args[4]++;
if (cb->args[4] < cb->args[3])
--
2.25.1
^ permalink raw reply related [flat|nested] 6+ messages in thread* Re: [Drbd-dev] [PATCH] drbd: Fix a use after free in get_initial_state 2021-04-01 11:57 [PATCH] drbd: Fix a use after free in get_initial_state Lv Yunlong @ 2021-04-01 13:01 ` Christoph Böhmwalder 2021-04-01 15:13 ` lyl2019 2021-04-02 5:09 ` kernel test robot 1 sibling, 1 reply; 6+ messages in thread From: Christoph Böhmwalder @ 2021-04-01 13:01 UTC (permalink / raw) To: Lv Yunlong Cc: philipp.reisner, lars.ellenberg, axboe, linux-block, linux-kernel, drbd-dev On 4/1/21 1:57 PM, Lv Yunlong wrote: > In get_initial_state, it calls notify_initial_state_done(skb,..) if > cb->args[5]==1. I see that if genlmsg_put() failed in > notify_initial_state_done(), the skb will be freed by nlmsg_free(skb). > Then get_initial_state will goto out and the freed skb will be used by > return value skb->len. > > My patch lets skb_len = skb->len and return the skb_len to avoid the uaf. > > Fixes: a29728463b254 ("drbd: Backport the "events2" command") > Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn> > --- > drivers/block/drbd/drbd_nl.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c > index bf7de4c7b96c..474f84675d0a 100644 > --- a/drivers/block/drbd/drbd_nl.c > +++ b/drivers/block/drbd/drbd_nl.c > @@ -4905,6 +4905,7 @@ static int get_initial_state(struct sk_buff *skb, struct netlink_callback *cb) > struct drbd_state_change *state_change = (struct drbd_state_change *)cb->args[0]; > unsigned int seq = cb->args[2]; > unsigned int n; > + unsigned int skb_len = skb->len; > enum drbd_notification_type flags = 0; > > /* There is no need for taking notification_mutex here: it doesn't > @@ -4915,7 +4916,7 @@ static int get_initial_state(struct sk_buff *skb, struct netlink_callback *cb) > cb->args[5]--; > if (cb->args[5] == 1) { > notify_initial_state_done(skb, seq); > - goto out; > + return skb_len; > } > n = cb->args[4]++; > if (cb->args[4] < cb->args[3]) > Thanks for the patch! I think the problem goes even further: skb can also be freed in the notify_*_state_change -> notify_*_state calls below. Also, at the point where we save skb->len into skb_len, skb is not initialized yet. Maybe it makes more sense to not return a length in the first place here, but an error code instead. -- Christoph Böhmwalder LINBIT | Keeping the Digital World Running DRBD HA — Disaster Recovery — Software defined Storage ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Re: [Drbd-dev] [PATCH] drbd: Fix a use after free in get_initial_state 2021-04-01 13:01 ` [Drbd-dev] " Christoph Böhmwalder @ 2021-04-01 15:13 ` lyl2019 2021-04-01 15:17 ` lyl2019 0 siblings, 1 reply; 6+ messages in thread From: lyl2019 @ 2021-04-01 15:13 UTC (permalink / raw) To: Christoph Böhmwalder Cc: philipp.reisner, lars.ellenberg, axboe, linux-block, linux-kernel, drbd-dev > -----原始邮件----- > 发件人: "Christoph Böhmwalder" <christoph.boehmwalder@linbit.com> > 发送时间: 2021-04-01 21:01:20 (星期四) > 收件人: "Lv Yunlong" <lyl2019@mail.ustc.edu.cn> > 抄送: philipp.reisner@linbit.com, lars.ellenberg@linbit.com, axboe@kernel.dk, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, drbd-dev@lists.linbit.com > 主题: Re: [Drbd-dev] [PATCH] drbd: Fix a use after free in get_initial_state > > On 4/1/21 1:57 PM, Lv Yunlong wrote: > > In get_initial_state, it calls notify_initial_state_done(skb,..) if > > cb->args[5]==1. I see that if genlmsg_put() failed in > > notify_initial_state_done(), the skb will be freed by nlmsg_free(skb). > > Then get_initial_state will goto out and the freed skb will be used by > > return value skb->len. > > > > My patch lets skb_len = skb->len and return the skb_len to avoid the uaf. > > > > Fixes: a29728463b254 ("drbd: Backport the "events2" command") > > Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn> > > --- > > drivers/block/drbd/drbd_nl.c | 3 ++- > > 1 file changed, 2 insertions(+), 1 deletion(-) > > > > diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c > > index bf7de4c7b96c..474f84675d0a 100644 > > --- a/drivers/block/drbd/drbd_nl.c > > +++ b/drivers/block/drbd/drbd_nl.c > > @@ -4905,6 +4905,7 @@ static int get_initial_state(struct sk_buff *skb, struct netlink_callback *cb) > > struct drbd_state_change *state_change = (struct drbd_state_change *)cb->args[0]; > > unsigned int seq = cb->args[2]; > > unsigned int n; > > + unsigned int skb_len = skb->len; > > enum drbd_notification_type flags = 0; > > > > /* There is no need for taking notification_mutex here: it doesn't > > @@ -4915,7 +4916,7 @@ static int get_initial_state(struct sk_buff *skb, struct netlink_callback *cb) > > cb->args[5]--; > > if (cb->args[5] == 1) { > > notify_initial_state_done(skb, seq); > > - goto out; > > + return skb_len; > > } > > n = cb->args[4]++; > > if (cb->args[4] < cb->args[3]) > > > > Thanks for the patch! > > I think the problem goes even further: skb can also be freed in the > notify_*_state_change -> notify_*_state calls below. > > Also, at the point where we save skb->len into skb_len, skb is not > initialized yet. Maybe it makes more sense to not return a length in the > first place here, but an error code instead. > > -- > Christoph Böhmwalder > LINBIT | Keeping the Digital World Running > DRBD HA — Disaster Recovery — Software defined Storage Ok, I see. I found that drbd_adm_get_initial_state() has called the get_initial_state(), and return -ENOMEM if it calls remember_old_state() failed. So, i think that means if get_initial_state() failed on the notify_initial_state_done(), it should return -ENOMEM too. I will submit the PATCH v2 to fix the first place. The fixes of the further problem is hard for me. Thanks. ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Re: Re: [Drbd-dev] [PATCH] drbd: Fix a use after free in get_initial_state 2021-04-01 15:13 ` lyl2019 @ 2021-04-01 15:17 ` lyl2019 0 siblings, 0 replies; 6+ messages in thread From: lyl2019 @ 2021-04-01 15:17 UTC (permalink / raw) To: lyl2019 Cc: Christoph Böhmwalder, philipp.reisner, lars.ellenberg, axboe, linux-block, linux-kernel, drbd-dev > -----原始邮件----- > 发件人: lyl2019@mail.ustc.edu.cn > 发送时间: 2021-04-01 23:13:58 (星期四) > 收件人: "Christoph Böhmwalder" <christoph.boehmwalder@linbit.com> > 抄送: philipp.reisner@linbit.com, lars.ellenberg@linbit.com, axboe@kernel.dk, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, drbd-dev@lists.linbit.com > 主题: Re: Re: [Drbd-dev] [PATCH] drbd: Fix a use after free in get_initial_state > > > > > > -----原始邮件----- > > 发件人: "Christoph Böhmwalder" <christoph.boehmwalder@linbit.com> > > 发送时间: 2021-04-01 21:01:20 (星期四) > > 收件人: "Lv Yunlong" <lyl2019@mail.ustc.edu.cn> > > 抄送: philipp.reisner@linbit.com, lars.ellenberg@linbit.com, axboe@kernel.dk, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, drbd-dev@lists.linbit.com > > 主题: Re: [Drbd-dev] [PATCH] drbd: Fix a use after free in get_initial_state > > > > On 4/1/21 1:57 PM, Lv Yunlong wrote: > > > In get_initial_state, it calls notify_initial_state_done(skb,..) if > > > cb->args[5]==1. I see that if genlmsg_put() failed in > > > notify_initial_state_done(), the skb will be freed by nlmsg_free(skb). > > > Then get_initial_state will goto out and the freed skb will be used by > > > return value skb->len. > > > > > > My patch lets skb_len = skb->len and return the skb_len to avoid the uaf. > > > > > > Fixes: a29728463b254 ("drbd: Backport the "events2" command") > > > Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn> > > > --- > > > drivers/block/drbd/drbd_nl.c | 3 ++- > > > 1 file changed, 2 insertions(+), 1 deletion(-) > > > > > > diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c > > > index bf7de4c7b96c..474f84675d0a 100644 > > > --- a/drivers/block/drbd/drbd_nl.c > > > +++ b/drivers/block/drbd/drbd_nl.c > > > @@ -4905,6 +4905,7 @@ static int get_initial_state(struct sk_buff *skb, struct netlink_callback *cb) > > > struct drbd_state_change *state_change = (struct drbd_state_change *)cb->args[0]; > > > unsigned int seq = cb->args[2]; > > > unsigned int n; > > > + unsigned int skb_len = skb->len; > > > enum drbd_notification_type flags = 0; > > > > > > /* There is no need for taking notification_mutex here: it doesn't > > > @@ -4915,7 +4916,7 @@ static int get_initial_state(struct sk_buff *skb, struct netlink_callback *cb) > > > cb->args[5]--; > > > if (cb->args[5] == 1) { > > > notify_initial_state_done(skb, seq); > > > - goto out; > > > + return skb_len; > > > } > > > n = cb->args[4]++; > > > if (cb->args[4] < cb->args[3]) > > > > > > > Thanks for the patch! > > > > I think the problem goes even further: skb can also be freed in the > > notify_*_state_change -> notify_*_state calls below. > > > > Also, at the point where we save skb->len into skb_len, skb is not > > initialized yet. Maybe it makes more sense to not return a length in the > > first place here, but an error code instead. > > > > -- > > Christoph Böhmwalder > > LINBIT | Keeping the Digital World Running > > DRBD HA — Disaster Recovery — Software defined Storage > > Ok, I see. > I found that drbd_adm_get_initial_state() has called the get_initial_state(), > and return -ENOMEM if it calls remember_old_state() failed. > > So, i think that means if get_initial_state() failed on the notify_initial_state_done(), > it should return -ENOMEM too. > > I will submit the PATCH v2 to fix the first place. The fixes of the further problem is > hard for me. > > Thanks. I found that notify_initial_state_done() uses err = -EMSGSIZE, so the first place should return -EMSGSIZE not -ENOMEM. Sorry. ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] drbd: Fix a use after free in get_initial_state 2021-04-01 11:57 [PATCH] drbd: Fix a use after free in get_initial_state Lv Yunlong @ 2021-04-02 5:09 ` kernel test robot 2021-04-02 5:09 ` kernel test robot 1 sibling, 0 replies; 6+ messages in thread From: kernel test robot @ 2021-04-02 5:09 UTC (permalink / raw) To: Lv Yunlong, philipp.reisner, lars.ellenberg, axboe Cc: kbuild-all, drbd-dev, linux-block, linux-kernel, Lv Yunlong [-- Attachment #1: Type: text/plain, Size: 15507 bytes --] Hi Lv, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on block/for-next] [also build test WARNING on linux/master linus/master v5.12-rc5 next-20210401] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Lv-Yunlong/drbd-Fix-a-use-after-free-in-get_initial_state/20210402-015401 base: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next config: x86_64-randconfig-s021-20210401 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-279-g6d5d9b42-dirty # https://github.com/0day-ci/linux/commit/af3f55d6c8730c5c1ce31fda165712091584adb0 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Lv-Yunlong/drbd-Fix-a-use-after-free-in-get_initial_state/20210402-015401 git checkout af3f55d6c8730c5c1ce31fda165712091584adb0 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com> sparse warnings: (new ones prefixed by >>) >> drivers/block/drbd/drbd_nl.c:4957:1: sparse: sparse: unused label 'out' drivers/block/drbd/drbd_nl.c: note: in included file: include/linux/genl_magic_func.h:212:12: sparse: sparse: symbol 'drbd_genl_cmd_to_str' was not declared. Should it be static? drivers/block/drbd/drbd_nl.c:454:33: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:454:33: sparse: struct disk_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:454:33: sparse: struct disk_conf * drivers/block/drbd/drbd_nl.c:691:38: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:691:38: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:691:38: sparse: struct net_conf * drivers/block/drbd/drbd_nl.c:793:40: sparse: sparse: mixing different enum types: drivers/block/drbd/drbd_nl.c:793:40: sparse: int enum drbd_state_rv drivers/block/drbd/drbd_nl.c:793:40: sparse: unsigned int enum drbd_ret_code drivers/block/drbd/drbd_nl.c:795:40: sparse: sparse: mixing different enum types: drivers/block/drbd/drbd_nl.c:795:40: sparse: int enum drbd_state_rv drivers/block/drbd/drbd_nl.c:795:40: sparse: unsigned int enum drbd_ret_code drivers/block/drbd/drbd_nl.c:980:18: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:980:18: sparse: struct disk_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:980:18: sparse: struct disk_conf * drivers/block/drbd/drbd_nl.c:1287:41: sparse: sparse: cast to restricted __be32 drivers/block/drbd/drbd_nl.c:1287:41: sparse: sparse: cast to restricted __be32 drivers/block/drbd/drbd_nl.c:1287:41: sparse: sparse: cast to restricted __be32 drivers/block/drbd/drbd_nl.c:1287:41: sparse: sparse: cast to restricted __be32 drivers/block/drbd/drbd_nl.c:1287:41: sparse: sparse: cast to restricted __be32 drivers/block/drbd/drbd_nl.c:1287:41: sparse: sparse: cast to restricted __be32 drivers/block/drbd/drbd_nl.c:1347:22: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:1347:22: sparse: struct disk_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:1347:22: sparse: struct disk_conf * drivers/block/drbd/drbd_nl.c:1639:17: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:1639:17: sparse: struct disk_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:1639:17: sparse: struct disk_conf * drivers/block/drbd/drbd_nl.c:1649:17: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:1649:17: sparse: struct fifo_buffer [noderef] __rcu * drivers/block/drbd/drbd_nl.c:1649:17: sparse: struct fifo_buffer * drivers/block/drbd/drbd_nl.c:1872:14: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:1872:14: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:1872:14: sparse: struct net_conf * drivers/block/drbd/drbd_nl.c:2130:39: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:2130:39: sparse: struct disk_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:2130:39: sparse: struct disk_conf * drivers/block/drbd/drbd_nl.c:2138:13: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:2138:13: sparse: struct disk_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:2138:13: sparse: struct disk_conf * drivers/block/drbd/drbd_nl.c:2320:50: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:2320:50: sparse: struct disk_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:2320:50: sparse: struct disk_conf * drivers/block/drbd/drbd_nl.c:2343:45: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:2343:45: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:2343:45: sparse: struct net_conf * drivers/block/drbd/drbd_nl.c:2488:9: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:2488:9: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:2488:9: sparse: struct net_conf * drivers/block/drbd/drbd_nl.c:2651:9: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:2651:9: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:2651:9: sparse: struct net_conf * drivers/block/drbd/drbd_nl.c:2803:27: sparse: sparse: mixing different enum types: drivers/block/drbd/drbd_nl.c:2883:18: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:2883:18: sparse: struct disk_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:2883:18: sparse: struct disk_conf * drivers/block/drbd/drbd_nl.c:2923:17: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:2923:17: sparse: struct disk_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:2923:17: sparse: struct disk_conf * drivers/block/drbd/drbd_nl.c:3461:33: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:3461:33: sparse: struct disk_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:3461:33: sparse: struct disk_conf * drivers/block/drbd/drbd_nl.c:3586:28: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:3586:28: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:3586:28: sparse: struct net_conf * drivers/block/drbd/drbd_nl.c:3799:29: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:3799:29: sparse: struct disk_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:3799:29: sparse: struct disk_conf * drivers/block/drbd/drbd_nl.c:3805:22: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:3805:22: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:3805:22: sparse: struct net_conf * drivers/block/drbd/drbd_nl.c:3995:38: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:3995:38: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:3995:38: sparse: struct net_conf * drivers/block/drbd/drbd_nl.c:450:9: sparse: sparse: context imbalance in 'highest_fencing_policy' - different lock contexts for basic block drivers/block/drbd/drbd_nl.c:2185:9: sparse: sparse: context imbalance in 'drbd_adm_attach' - different lock contexts for basic block drivers/block/drbd/drbd_nl.c: note: in included file: drivers/block/drbd/drbd_int.h:2141:14: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_int.h:2141:14: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_int.h:2141:14: sparse: struct net_conf * drivers/block/drbd/drbd_int.h:780:24: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_int.h:780:24: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_int.h:780:24: sparse: struct net_conf * drivers/block/drbd/drbd_int.h:780:24: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_int.h:780:24: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_int.h:780:24: sparse: struct net_conf * drivers/block/drbd/drbd_int.h:780:24: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_int.h:780:24: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_int.h:780:24: sparse: struct net_conf * drivers/block/drbd/drbd_int.h:780:24: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_int.h:780:24: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_int.h:780:24: sparse: struct net_conf * drivers/block/drbd/drbd_int.h:780:24: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_int.h:780:24: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_int.h:780:24: sparse: struct net_conf * vim +/out +4957 drivers/block/drbd/drbd_nl.c a29728463b254c Andreas Gruenbacher 2014-07-31 4902 a29728463b254c Andreas Gruenbacher 2014-07-31 4903 static int get_initial_state(struct sk_buff *skb, struct netlink_callback *cb) a29728463b254c Andreas Gruenbacher 2014-07-31 4904 { a29728463b254c Andreas Gruenbacher 2014-07-31 4905 struct drbd_state_change *state_change = (struct drbd_state_change *)cb->args[0]; a29728463b254c Andreas Gruenbacher 2014-07-31 4906 unsigned int seq = cb->args[2]; a29728463b254c Andreas Gruenbacher 2014-07-31 4907 unsigned int n; af3f55d6c8730c Lv Yunlong 2021-04-01 4908 unsigned int skb_len = skb->len; a29728463b254c Andreas Gruenbacher 2014-07-31 4909 enum drbd_notification_type flags = 0; a29728463b254c Andreas Gruenbacher 2014-07-31 4910 a29728463b254c Andreas Gruenbacher 2014-07-31 4911 /* There is no need for taking notification_mutex here: it doesn't a29728463b254c Andreas Gruenbacher 2014-07-31 4912 matter if the initial state events mix with later state chage a29728463b254c Andreas Gruenbacher 2014-07-31 4913 events; we can always tell the events apart by the NOTIFY_EXISTS a29728463b254c Andreas Gruenbacher 2014-07-31 4914 flag. */ a29728463b254c Andreas Gruenbacher 2014-07-31 4915 a29728463b254c Andreas Gruenbacher 2014-07-31 4916 cb->args[5]--; a29728463b254c Andreas Gruenbacher 2014-07-31 4917 if (cb->args[5] == 1) { a29728463b254c Andreas Gruenbacher 2014-07-31 4918 notify_initial_state_done(skb, seq); af3f55d6c8730c Lv Yunlong 2021-04-01 4919 return skb_len; a29728463b254c Andreas Gruenbacher 2014-07-31 4920 } a29728463b254c Andreas Gruenbacher 2014-07-31 4921 n = cb->args[4]++; a29728463b254c Andreas Gruenbacher 2014-07-31 4922 if (cb->args[4] < cb->args[3]) a29728463b254c Andreas Gruenbacher 2014-07-31 4923 flags |= NOTIFY_CONTINUES; a29728463b254c Andreas Gruenbacher 2014-07-31 4924 if (n < 1) { a29728463b254c Andreas Gruenbacher 2014-07-31 4925 notify_resource_state_change(skb, seq, state_change->resource, a29728463b254c Andreas Gruenbacher 2014-07-31 4926 NOTIFY_EXISTS | flags); a29728463b254c Andreas Gruenbacher 2014-07-31 4927 goto next; a29728463b254c Andreas Gruenbacher 2014-07-31 4928 } a29728463b254c Andreas Gruenbacher 2014-07-31 4929 n--; a29728463b254c Andreas Gruenbacher 2014-07-31 4930 if (n < state_change->n_connections) { a29728463b254c Andreas Gruenbacher 2014-07-31 4931 notify_connection_state_change(skb, seq, &state_change->connections[n], a29728463b254c Andreas Gruenbacher 2014-07-31 4932 NOTIFY_EXISTS | flags); a29728463b254c Andreas Gruenbacher 2014-07-31 4933 goto next; a29728463b254c Andreas Gruenbacher 2014-07-31 4934 } a29728463b254c Andreas Gruenbacher 2014-07-31 4935 n -= state_change->n_connections; a29728463b254c Andreas Gruenbacher 2014-07-31 4936 if (n < state_change->n_devices) { a29728463b254c Andreas Gruenbacher 2014-07-31 4937 notify_device_state_change(skb, seq, &state_change->devices[n], a29728463b254c Andreas Gruenbacher 2014-07-31 4938 NOTIFY_EXISTS | flags); a29728463b254c Andreas Gruenbacher 2014-07-31 4939 goto next; a29728463b254c Andreas Gruenbacher 2014-07-31 4940 } a29728463b254c Andreas Gruenbacher 2014-07-31 4941 n -= state_change->n_devices; a29728463b254c Andreas Gruenbacher 2014-07-31 4942 if (n < state_change->n_devices * state_change->n_connections) { a29728463b254c Andreas Gruenbacher 2014-07-31 4943 notify_peer_device_state_change(skb, seq, &state_change->peer_devices[n], a29728463b254c Andreas Gruenbacher 2014-07-31 4944 NOTIFY_EXISTS | flags); a29728463b254c Andreas Gruenbacher 2014-07-31 4945 goto next; a29728463b254c Andreas Gruenbacher 2014-07-31 4946 } a29728463b254c Andreas Gruenbacher 2014-07-31 4947 a29728463b254c Andreas Gruenbacher 2014-07-31 4948 next: a29728463b254c Andreas Gruenbacher 2014-07-31 4949 if (cb->args[4] == cb->args[3]) { a29728463b254c Andreas Gruenbacher 2014-07-31 4950 struct drbd_state_change *next_state_change = a29728463b254c Andreas Gruenbacher 2014-07-31 4951 list_entry(state_change->list.next, a29728463b254c Andreas Gruenbacher 2014-07-31 4952 struct drbd_state_change, list); a29728463b254c Andreas Gruenbacher 2014-07-31 4953 cb->args[0] = (long)next_state_change; a29728463b254c Andreas Gruenbacher 2014-07-31 4954 cb->args[3] = notifications_for_state_change(next_state_change); a29728463b254c Andreas Gruenbacher 2014-07-31 4955 cb->args[4] = 0; a29728463b254c Andreas Gruenbacher 2014-07-31 4956 } a29728463b254c Andreas Gruenbacher 2014-07-31 @4957 out: a29728463b254c Andreas Gruenbacher 2014-07-31 4958 return skb->len; a29728463b254c Andreas Gruenbacher 2014-07-31 4959 } a29728463b254c Andreas Gruenbacher 2014-07-31 4960 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org [-- Attachment #2: .config.gz --] [-- Type: application/gzip, Size: 41710 bytes --] [-- Attachment #3: Type: text/plain, Size: 149 bytes --] _______________________________________________ kbuild mailing list -- kbuild@lists.01.org To unsubscribe send an email to kbuild-leave@lists.01.org ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] drbd: Fix a use after free in get_initial_state @ 2021-04-02 5:09 ` kernel test robot 0 siblings, 0 replies; 6+ messages in thread From: kernel test robot @ 2021-04-02 5:09 UTC (permalink / raw) To: kbuild-all [-- Attachment #1: Type: text/plain, Size: 15859 bytes --] Hi Lv, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on block/for-next] [also build test WARNING on linux/master linus/master v5.12-rc5 next-20210401] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Lv-Yunlong/drbd-Fix-a-use-after-free-in-get_initial_state/20210402-015401 base: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next config: x86_64-randconfig-s021-20210401 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-279-g6d5d9b42-dirty # https://github.com/0day-ci/linux/commit/af3f55d6c8730c5c1ce31fda165712091584adb0 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Lv-Yunlong/drbd-Fix-a-use-after-free-in-get_initial_state/20210402-015401 git checkout af3f55d6c8730c5c1ce31fda165712091584adb0 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com> sparse warnings: (new ones prefixed by >>) >> drivers/block/drbd/drbd_nl.c:4957:1: sparse: sparse: unused label 'out' drivers/block/drbd/drbd_nl.c: note: in included file: include/linux/genl_magic_func.h:212:12: sparse: sparse: symbol 'drbd_genl_cmd_to_str' was not declared. Should it be static? drivers/block/drbd/drbd_nl.c:454:33: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:454:33: sparse: struct disk_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:454:33: sparse: struct disk_conf * drivers/block/drbd/drbd_nl.c:691:38: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:691:38: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:691:38: sparse: struct net_conf * drivers/block/drbd/drbd_nl.c:793:40: sparse: sparse: mixing different enum types: drivers/block/drbd/drbd_nl.c:793:40: sparse: int enum drbd_state_rv drivers/block/drbd/drbd_nl.c:793:40: sparse: unsigned int enum drbd_ret_code drivers/block/drbd/drbd_nl.c:795:40: sparse: sparse: mixing different enum types: drivers/block/drbd/drbd_nl.c:795:40: sparse: int enum drbd_state_rv drivers/block/drbd/drbd_nl.c:795:40: sparse: unsigned int enum drbd_ret_code drivers/block/drbd/drbd_nl.c:980:18: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:980:18: sparse: struct disk_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:980:18: sparse: struct disk_conf * drivers/block/drbd/drbd_nl.c:1287:41: sparse: sparse: cast to restricted __be32 drivers/block/drbd/drbd_nl.c:1287:41: sparse: sparse: cast to restricted __be32 drivers/block/drbd/drbd_nl.c:1287:41: sparse: sparse: cast to restricted __be32 drivers/block/drbd/drbd_nl.c:1287:41: sparse: sparse: cast to restricted __be32 drivers/block/drbd/drbd_nl.c:1287:41: sparse: sparse: cast to restricted __be32 drivers/block/drbd/drbd_nl.c:1287:41: sparse: sparse: cast to restricted __be32 drivers/block/drbd/drbd_nl.c:1347:22: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:1347:22: sparse: struct disk_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:1347:22: sparse: struct disk_conf * drivers/block/drbd/drbd_nl.c:1639:17: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:1639:17: sparse: struct disk_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:1639:17: sparse: struct disk_conf * drivers/block/drbd/drbd_nl.c:1649:17: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:1649:17: sparse: struct fifo_buffer [noderef] __rcu * drivers/block/drbd/drbd_nl.c:1649:17: sparse: struct fifo_buffer * drivers/block/drbd/drbd_nl.c:1872:14: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:1872:14: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:1872:14: sparse: struct net_conf * drivers/block/drbd/drbd_nl.c:2130:39: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:2130:39: sparse: struct disk_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:2130:39: sparse: struct disk_conf * drivers/block/drbd/drbd_nl.c:2138:13: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:2138:13: sparse: struct disk_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:2138:13: sparse: struct disk_conf * drivers/block/drbd/drbd_nl.c:2320:50: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:2320:50: sparse: struct disk_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:2320:50: sparse: struct disk_conf * drivers/block/drbd/drbd_nl.c:2343:45: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:2343:45: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:2343:45: sparse: struct net_conf * drivers/block/drbd/drbd_nl.c:2488:9: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:2488:9: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:2488:9: sparse: struct net_conf * drivers/block/drbd/drbd_nl.c:2651:9: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:2651:9: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:2651:9: sparse: struct net_conf * drivers/block/drbd/drbd_nl.c:2803:27: sparse: sparse: mixing different enum types: drivers/block/drbd/drbd_nl.c:2883:18: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:2883:18: sparse: struct disk_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:2883:18: sparse: struct disk_conf * drivers/block/drbd/drbd_nl.c:2923:17: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:2923:17: sparse: struct disk_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:2923:17: sparse: struct disk_conf * drivers/block/drbd/drbd_nl.c:3461:33: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:3461:33: sparse: struct disk_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:3461:33: sparse: struct disk_conf * drivers/block/drbd/drbd_nl.c:3586:28: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:3586:28: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:3586:28: sparse: struct net_conf * drivers/block/drbd/drbd_nl.c:3799:29: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:3799:29: sparse: struct disk_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:3799:29: sparse: struct disk_conf * drivers/block/drbd/drbd_nl.c:3805:22: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:3805:22: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:3805:22: sparse: struct net_conf * drivers/block/drbd/drbd_nl.c:3995:38: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_nl.c:3995:38: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_nl.c:3995:38: sparse: struct net_conf * drivers/block/drbd/drbd_nl.c:450:9: sparse: sparse: context imbalance in 'highest_fencing_policy' - different lock contexts for basic block drivers/block/drbd/drbd_nl.c:2185:9: sparse: sparse: context imbalance in 'drbd_adm_attach' - different lock contexts for basic block drivers/block/drbd/drbd_nl.c: note: in included file: drivers/block/drbd/drbd_int.h:2141:14: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_int.h:2141:14: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_int.h:2141:14: sparse: struct net_conf * drivers/block/drbd/drbd_int.h:780:24: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_int.h:780:24: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_int.h:780:24: sparse: struct net_conf * drivers/block/drbd/drbd_int.h:780:24: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_int.h:780:24: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_int.h:780:24: sparse: struct net_conf * drivers/block/drbd/drbd_int.h:780:24: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_int.h:780:24: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_int.h:780:24: sparse: struct net_conf * drivers/block/drbd/drbd_int.h:780:24: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_int.h:780:24: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_int.h:780:24: sparse: struct net_conf * drivers/block/drbd/drbd_int.h:780:24: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_int.h:780:24: sparse: struct net_conf [noderef] __rcu * drivers/block/drbd/drbd_int.h:780:24: sparse: struct net_conf * vim +/out +4957 drivers/block/drbd/drbd_nl.c a29728463b254c Andreas Gruenbacher 2014-07-31 4902 a29728463b254c Andreas Gruenbacher 2014-07-31 4903 static int get_initial_state(struct sk_buff *skb, struct netlink_callback *cb) a29728463b254c Andreas Gruenbacher 2014-07-31 4904 { a29728463b254c Andreas Gruenbacher 2014-07-31 4905 struct drbd_state_change *state_change = (struct drbd_state_change *)cb->args[0]; a29728463b254c Andreas Gruenbacher 2014-07-31 4906 unsigned int seq = cb->args[2]; a29728463b254c Andreas Gruenbacher 2014-07-31 4907 unsigned int n; af3f55d6c8730c Lv Yunlong 2021-04-01 4908 unsigned int skb_len = skb->len; a29728463b254c Andreas Gruenbacher 2014-07-31 4909 enum drbd_notification_type flags = 0; a29728463b254c Andreas Gruenbacher 2014-07-31 4910 a29728463b254c Andreas Gruenbacher 2014-07-31 4911 /* There is no need for taking notification_mutex here: it doesn't a29728463b254c Andreas Gruenbacher 2014-07-31 4912 matter if the initial state events mix with later state chage a29728463b254c Andreas Gruenbacher 2014-07-31 4913 events; we can always tell the events apart by the NOTIFY_EXISTS a29728463b254c Andreas Gruenbacher 2014-07-31 4914 flag. */ a29728463b254c Andreas Gruenbacher 2014-07-31 4915 a29728463b254c Andreas Gruenbacher 2014-07-31 4916 cb->args[5]--; a29728463b254c Andreas Gruenbacher 2014-07-31 4917 if (cb->args[5] == 1) { a29728463b254c Andreas Gruenbacher 2014-07-31 4918 notify_initial_state_done(skb, seq); af3f55d6c8730c Lv Yunlong 2021-04-01 4919 return skb_len; a29728463b254c Andreas Gruenbacher 2014-07-31 4920 } a29728463b254c Andreas Gruenbacher 2014-07-31 4921 n = cb->args[4]++; a29728463b254c Andreas Gruenbacher 2014-07-31 4922 if (cb->args[4] < cb->args[3]) a29728463b254c Andreas Gruenbacher 2014-07-31 4923 flags |= NOTIFY_CONTINUES; a29728463b254c Andreas Gruenbacher 2014-07-31 4924 if (n < 1) { a29728463b254c Andreas Gruenbacher 2014-07-31 4925 notify_resource_state_change(skb, seq, state_change->resource, a29728463b254c Andreas Gruenbacher 2014-07-31 4926 NOTIFY_EXISTS | flags); a29728463b254c Andreas Gruenbacher 2014-07-31 4927 goto next; a29728463b254c Andreas Gruenbacher 2014-07-31 4928 } a29728463b254c Andreas Gruenbacher 2014-07-31 4929 n--; a29728463b254c Andreas Gruenbacher 2014-07-31 4930 if (n < state_change->n_connections) { a29728463b254c Andreas Gruenbacher 2014-07-31 4931 notify_connection_state_change(skb, seq, &state_change->connections[n], a29728463b254c Andreas Gruenbacher 2014-07-31 4932 NOTIFY_EXISTS | flags); a29728463b254c Andreas Gruenbacher 2014-07-31 4933 goto next; a29728463b254c Andreas Gruenbacher 2014-07-31 4934 } a29728463b254c Andreas Gruenbacher 2014-07-31 4935 n -= state_change->n_connections; a29728463b254c Andreas Gruenbacher 2014-07-31 4936 if (n < state_change->n_devices) { a29728463b254c Andreas Gruenbacher 2014-07-31 4937 notify_device_state_change(skb, seq, &state_change->devices[n], a29728463b254c Andreas Gruenbacher 2014-07-31 4938 NOTIFY_EXISTS | flags); a29728463b254c Andreas Gruenbacher 2014-07-31 4939 goto next; a29728463b254c Andreas Gruenbacher 2014-07-31 4940 } a29728463b254c Andreas Gruenbacher 2014-07-31 4941 n -= state_change->n_devices; a29728463b254c Andreas Gruenbacher 2014-07-31 4942 if (n < state_change->n_devices * state_change->n_connections) { a29728463b254c Andreas Gruenbacher 2014-07-31 4943 notify_peer_device_state_change(skb, seq, &state_change->peer_devices[n], a29728463b254c Andreas Gruenbacher 2014-07-31 4944 NOTIFY_EXISTS | flags); a29728463b254c Andreas Gruenbacher 2014-07-31 4945 goto next; a29728463b254c Andreas Gruenbacher 2014-07-31 4946 } a29728463b254c Andreas Gruenbacher 2014-07-31 4947 a29728463b254c Andreas Gruenbacher 2014-07-31 4948 next: a29728463b254c Andreas Gruenbacher 2014-07-31 4949 if (cb->args[4] == cb->args[3]) { a29728463b254c Andreas Gruenbacher 2014-07-31 4950 struct drbd_state_change *next_state_change = a29728463b254c Andreas Gruenbacher 2014-07-31 4951 list_entry(state_change->list.next, a29728463b254c Andreas Gruenbacher 2014-07-31 4952 struct drbd_state_change, list); a29728463b254c Andreas Gruenbacher 2014-07-31 4953 cb->args[0] = (long)next_state_change; a29728463b254c Andreas Gruenbacher 2014-07-31 4954 cb->args[3] = notifications_for_state_change(next_state_change); a29728463b254c Andreas Gruenbacher 2014-07-31 4955 cb->args[4] = 0; a29728463b254c Andreas Gruenbacher 2014-07-31 4956 } a29728463b254c Andreas Gruenbacher 2014-07-31 @4957 out: a29728463b254c Andreas Gruenbacher 2014-07-31 4958 return skb->len; a29728463b254c Andreas Gruenbacher 2014-07-31 4959 } a29728463b254c Andreas Gruenbacher 2014-07-31 4960 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org _______________________________________________ kbuild mailing list -- kbuild(a)lists.01.org To unsubscribe send an email to kbuild-leave(a)lists.01.org [-- Attachment #2: config.gz --] [-- Type: application/gzip, Size: 41710 bytes --] ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2021-04-02 5:10 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2021-04-01 11:57 [PATCH] drbd: Fix a use after free in get_initial_state Lv Yunlong 2021-04-01 13:01 ` [Drbd-dev] " Christoph Böhmwalder 2021-04-01 15:13 ` lyl2019 2021-04-01 15:17 ` lyl2019 2021-04-02 5:09 ` kernel test robot 2021-04-02 5:09 ` kernel test robot
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