* [PATCH v3 net 0/2] net: Fix race of rtnl_net_lock(dev_net(dev)).
@ 2025-02-11 5:12 Kuniyuki Iwashima
2025-02-11 5:12 ` [PATCH v3 net 1/2] net: Fix dev_net(dev) race in unregister_netdevice_notifier_dev_net() Kuniyuki Iwashima
2025-02-11 5:12 ` [PATCH v3 net 2/2] dev: Use rtnl_net_dev_lock() in unregister_netdev() Kuniyuki Iwashima
0 siblings, 2 replies; 7+ messages in thread
From: Kuniyuki Iwashima @ 2025-02-11 5:12 UTC (permalink / raw)
To: David S. Miller, Eric Dumazet, Jakub Kicinski, Paolo Abeni,
Simon Horman
Cc: Kuniyuki Iwashima, Kuniyuki Iwashima, netdev
Yael Chemla reported that commit 7fb1073300a2 ("net: Hold rtnl_net_lock()
in (un)?register_netdevice_notifier_dev_net().") started to trigger KASAN's
use-after-free splat.
The problem is that dev_net(dev) fetched before rtnl_net_lock() might be
different after rtnl_net_lock().
The patch 1 fixes the issue by checking dev_net(dev) after rtnl_net_lock(),
and the patch 2 fixes the same potential issue that would emerge once RTNL
is removed.
Changes:
v3:
* Bump net->passive instead of maybe_get_net()
* Remove msleep(1) loop
* Use rcu_access_pointer() instead of rcu_read_lock().
v2:
* Use dev_net_rcu()
* Use msleep(1) instead of cond_resched() after maybe_get_net()
* Remove cond_resched() after net_eq() check
v1: https://lore.kernel.org/netdev/20250130232435.43622-1-kuniyu@amazon.com/
Kuniyuki Iwashima (2):
net: Fix dev_net(dev) race in unregister_netdevice_notifier_dev_net().
dev: Use rtnl_net_dev_lock() in unregister_netdev().
net/core/dev.c | 47 +++++++++++++++++++++++++++++++++++++++--------
1 file changed, 39 insertions(+), 8 deletions(-)
--
2.39.5 (Apple Git-154)
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH v3 net 1/2] net: Fix dev_net(dev) race in unregister_netdevice_notifier_dev_net().
2025-02-11 5:12 [PATCH v3 net 0/2] net: Fix race of rtnl_net_lock(dev_net(dev)) Kuniyuki Iwashima
@ 2025-02-11 5:12 ` Kuniyuki Iwashima
2025-02-11 9:43 ` Eric Dumazet
` (2 more replies)
2025-02-11 5:12 ` [PATCH v3 net 2/2] dev: Use rtnl_net_dev_lock() in unregister_netdev() Kuniyuki Iwashima
1 sibling, 3 replies; 7+ messages in thread
From: Kuniyuki Iwashima @ 2025-02-11 5:12 UTC (permalink / raw)
To: David S. Miller, Eric Dumazet, Jakub Kicinski, Paolo Abeni,
Simon Horman
Cc: Kuniyuki Iwashima, Kuniyuki Iwashima, netdev, Yael Chemla
After the cited commit, dev_net(dev) is fetched before holding RTNL
and passed to __unregister_netdevice_notifier_net().
However, dev_net(dev) might be different after holding RTNL.
In the reported case [0], while removing a VF device, its netns was
being dismantled and the VF was moved to init_net.
So the following sequence is basically illegal when dev was fetched
without lookup:
net = dev_net(dev);
rtnl_net_lock(net);
Let's use a new helper rtnl_net_dev_lock() to fix the race.
It fetches dev_net_rcu(dev), bumps its net->passive, and checks if
dev_net_rcu(dev) is changed after rtnl_net_lock().
[0]:
BUG: KASAN: slab-use-after-free in notifier_call_chain (kernel/notifier.c:75 (discriminator 2))
Read of size 8 at addr ffff88810cefb4c8 by task test-bridge-lag/21127
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014
Call Trace:
<TASK>
dump_stack_lvl (lib/dump_stack.c:123)
print_report (mm/kasan/report.c:379 mm/kasan/report.c:489)
kasan_report (mm/kasan/report.c:604)
notifier_call_chain (kernel/notifier.c:75 (discriminator 2))
call_netdevice_notifiers_info (net/core/dev.c:2011)
unregister_netdevice_many_notify (net/core/dev.c:11551)
unregister_netdevice_queue (net/core/dev.c:11487)
unregister_netdev (net/core/dev.c:11635)
mlx5e_remove (drivers/net/ethernet/mellanox/mlx5/core/en_main.c:6552 drivers/net/ethernet/mellanox/mlx5/core/en_main.c:6579) mlx5_core
auxiliary_bus_remove (drivers/base/auxiliary.c:230)
device_release_driver_internal (drivers/base/dd.c:1275 drivers/base/dd.c:1296)
bus_remove_device (./include/linux/kobject.h:193 drivers/base/base.h:73 drivers/base/bus.c:583)
device_del (drivers/base/power/power.h:142 drivers/base/core.c:3855)
mlx5_rescan_drivers_locked (./include/linux/auxiliary_bus.h:241 drivers/net/ethernet/mellanox/mlx5/core/dev.c:333 drivers/net/ethernet/mellanox/mlx5/core/dev.c:535 drivers/net/ethernet/mellanox/mlx5/core/dev.c:549) mlx5_core
mlx5_unregister_device (drivers/net/ethernet/mellanox/mlx5/core/dev.c:468) mlx5_core
mlx5_uninit_one (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 drivers/net/ethernet/mellanox/mlx5/core/main.c:1563) mlx5_core
remove_one (drivers/net/ethernet/mellanox/mlx5/core/main.c:965 drivers/net/ethernet/mellanox/mlx5/core/main.c:2019) mlx5_core
pci_device_remove (./include/linux/pm_runtime.h:129 drivers/pci/pci-driver.c:475)
device_release_driver_internal (drivers/base/dd.c:1275 drivers/base/dd.c:1296)
unbind_store (drivers/base/bus.c:245)
kernfs_fop_write_iter (fs/kernfs/file.c:338)
vfs_write (fs/read_write.c:587 (discriminator 1) fs/read_write.c:679 (discriminator 1))
ksys_write (fs/read_write.c:732)
do_syscall_64 (arch/x86/entry/common.c:52 (discriminator 1) arch/x86/entry/common.c:83 (discriminator 1))
entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
RIP: 0033:0x7f6a4d5018b7
Fixes: 7fb1073300a2 ("net: Hold rtnl_net_lock() in (un)?register_netdevice_notifier_dev_net().")
Reported-by: Yael Chemla <ychemla@nvidia.com>
Closes: https://lore.kernel.org/netdev/146eabfe-123c-4970-901e-e961b4c09bc3@nvidia.com/
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
---
v3:
* Bump net->passive instead of maybe_get_net()
* Remove msleep(1) loop
* Use rcu_access_pointer() instead of rcu_read_lock().
v2:
* Use dev_net_rcu().
* Use msleep(1) instead of cond_resched() after maybe_get_net()
* Remove cond_resched() after net_eq() check
v1: https://lore.kernel.org/netdev/20250130232435.43622-2-kuniyu@amazon.com/
---
net/core/dev.c | 41 +++++++++++++++++++++++++++++++++++++----
1 file changed, 37 insertions(+), 4 deletions(-)
diff --git a/net/core/dev.c b/net/core/dev.c
index 55e356a68db6..1248fb368e78 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2070,6 +2070,35 @@ static void __move_netdevice_notifier_net(struct net *src_net,
__register_netdevice_notifier_net(dst_net, nb, true);
}
+static void rtnl_net_dev_lock(struct net_device *dev)
+{
+ struct net *net;
+
+again:
+ /* netns might be being dismantled. */
+ rcu_read_lock();
+ net = dev_net_rcu(dev);
+ refcount_inc(&net->passive);
+ rcu_read_unlock();
+
+ rtnl_net_lock(net);
+
+ /* dev might have been moved to another netns. */
+ if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
+ rtnl_net_unlock(net);
+ net_drop_ns(net);
+ goto again;
+ }
+}
+
+static void rtnl_net_dev_unlock(struct net_device *dev)
+{
+ struct net *net = dev_net(dev);
+
+ rtnl_net_unlock(net);
+ net_drop_ns(net);
+}
+
int register_netdevice_notifier_dev_net(struct net_device *dev,
struct notifier_block *nb,
struct netdev_net_notifier *nn)
@@ -2077,6 +2106,11 @@ int register_netdevice_notifier_dev_net(struct net_device *dev,
struct net *net = dev_net(dev);
int err;
+ /* rtnl_net_lock() assumes dev is not yet published by
+ * register_netdevice().
+ */
+ DEBUG_NET_WARN_ON_ONCE(!list_empty(&dev->dev_list));
+
rtnl_net_lock(net);
err = __register_netdevice_notifier_net(net, nb, false);
if (!err) {
@@ -2093,13 +2127,12 @@ int unregister_netdevice_notifier_dev_net(struct net_device *dev,
struct notifier_block *nb,
struct netdev_net_notifier *nn)
{
- struct net *net = dev_net(dev);
int err;
- rtnl_net_lock(net);
+ rtnl_net_dev_lock(dev);
list_del(&nn->list);
- err = __unregister_netdevice_notifier_net(net, nb);
- rtnl_net_unlock(net);
+ err = __unregister_netdevice_notifier_net(dev_net(dev), nb);
+ rtnl_net_dev_unlock(dev);
return err;
}
--
2.39.5 (Apple Git-154)
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH v3 net 2/2] dev: Use rtnl_net_dev_lock() in unregister_netdev().
2025-02-11 5:12 [PATCH v3 net 0/2] net: Fix race of rtnl_net_lock(dev_net(dev)) Kuniyuki Iwashima
2025-02-11 5:12 ` [PATCH v3 net 1/2] net: Fix dev_net(dev) race in unregister_netdevice_notifier_dev_net() Kuniyuki Iwashima
@ 2025-02-11 5:12 ` Kuniyuki Iwashima
1 sibling, 0 replies; 7+ messages in thread
From: Kuniyuki Iwashima @ 2025-02-11 5:12 UTC (permalink / raw)
To: David S. Miller, Eric Dumazet, Jakub Kicinski, Paolo Abeni,
Simon Horman
Cc: Kuniyuki Iwashima, Kuniyuki Iwashima, netdev
The following sequence is basically illegal when dev was fetched
without lookup because dev_net(dev) might be different after holding
rtnl_net_lock():
net = dev_net(dev);
rtnl_net_lock(net);
Let's use rtnl_net_dev_lock() in unregister_netdev().
Note that there is no real bug in unregister_netdev() for now
because RTNL protects the scope even if dev_net(dev) is changed
before/after RTNL.
Fixes: 00fb9823939e ("dev: Hold per-netns RTNL in (un)?register_netdev().")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
---
net/core/dev.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/net/core/dev.c b/net/core/dev.c
index 1248fb368e78..0f806dba0245 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -11930,11 +11930,9 @@ EXPORT_SYMBOL(unregister_netdevice_many);
*/
void unregister_netdev(struct net_device *dev)
{
- struct net *net = dev_net(dev);
-
- rtnl_net_lock(net);
+ rtnl_net_dev_lock(dev);
unregister_netdevice(dev);
- rtnl_net_unlock(net);
+ rtnl_net_dev_unlock(dev);
}
EXPORT_SYMBOL(unregister_netdev);
--
2.39.5 (Apple Git-154)
^ permalink raw reply related [flat|nested] 7+ messages in thread
* Re: [PATCH v3 net 1/2] net: Fix dev_net(dev) race in unregister_netdevice_notifier_dev_net().
2025-02-11 5:12 ` [PATCH v3 net 1/2] net: Fix dev_net(dev) race in unregister_netdevice_notifier_dev_net() Kuniyuki Iwashima
@ 2025-02-11 9:43 ` Eric Dumazet
2025-02-12 6:09 ` Kuniyuki Iwashima
2025-02-11 19:00 ` kernel test robot
2025-02-12 0:16 ` kernel test robot
2 siblings, 1 reply; 7+ messages in thread
From: Eric Dumazet @ 2025-02-11 9:43 UTC (permalink / raw)
To: Kuniyuki Iwashima
Cc: David S. Miller, Jakub Kicinski, Paolo Abeni, Simon Horman,
Kuniyuki Iwashima, netdev, Yael Chemla
On Tue, Feb 11, 2025 at 6:13 AM Kuniyuki Iwashima <kuniyu@amazon.com> wrote:
>
> After the cited commit, dev_net(dev) is fetched before holding RTNL
> and passed to __unregister_netdevice_notifier_net().
>
> However, dev_net(dev) might be different after holding RTNL.
>
> In the reported case [0], while removing a VF device, its netns was
> being dismantled and the VF was moved to init_net.
>
> So the following sequence is basically illegal when dev was fetched
> without lookup:
>
> net = dev_net(dev);
> rtnl_net_lock(net);
>
> Let's use a new helper rtnl_net_dev_lock() to fix the race.
>
> It fetches dev_net_rcu(dev), bumps its net->passive, and checks if
> dev_net_rcu(dev) is changed after rtnl_net_lock().
>
>
> Fixes: 7fb1073300a2 ("net: Hold rtnl_net_lock() in (un)?register_netdevice_notifier_dev_net().")
> Reported-by: Yael Chemla <ychemla@nvidia.com>
> Closes: https://lore.kernel.org/netdev/146eabfe-123c-4970-901e-e961b4c09bc3@nvidia.com/
> Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
> ---
> v3:
> * Bump net->passive instead of maybe_get_net()
> * Remove msleep(1) loop
> * Use rcu_access_pointer() instead of rcu_read_lock().
>
> v2:
> * Use dev_net_rcu().
> * Use msleep(1) instead of cond_resched() after maybe_get_net()
> * Remove cond_resched() after net_eq() check
>
> v1: https://lore.kernel.org/netdev/20250130232435.43622-2-kuniyu@amazon.com/
> ---
> net/core/dev.c | 41 +++++++++++++++++++++++++++++++++++++----
> 1 file changed, 37 insertions(+), 4 deletions(-)
>
> diff --git a/net/core/dev.c b/net/core/dev.c
> index 55e356a68db6..1248fb368e78 100644
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -2070,6 +2070,35 @@ static void __move_netdevice_notifier_net(struct net *src_net,
> __register_netdevice_notifier_net(dst_net, nb, true);
> }
>
> +static void rtnl_net_dev_lock(struct net_device *dev)
> +{
> + struct net *net;
> +
#ifdef CONFIG_NET_NS
> +again:
#endif
> + /* netns might be being dismantled. */
> + rcu_read_lock();
> + net = dev_net_rcu(dev);
> + refcount_inc(&net->passive);
> + rcu_read_unlock();
> +
> + rtnl_net_lock(net);
> +
#ifdef CONFIG_NET_NS
> + /* dev might have been moved to another netns. */
> + if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
> + rtnl_net_unlock(net);
> + net_drop_ns(net);
> + goto again;
> + }
#endif
Or perhaps not use net_drop_ns() and rename/export net_free() to
net_passive_dec() ?
diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
index 7ba1402ca7796663bed3373b1a0c6a0249cd1599..62d1a1c39547bd5cca71082b8172d453b56a96db
100644
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -297,7 +297,7 @@ static inline int check_net(const struct net *net)
}
void net_drop_ns(void *);
-
+void net_passive_dec(struct net *net);
#else
static inline struct net *get_net(struct net *net)
@@ -326,6 +326,11 @@ static inline int check_net(const struct net *net)
}
#define net_drop_ns NULL
+static inline void net_passive_dec(struct net *net)
+{
+ refcount_dec(&net->passive);
+}
+
#endif
/* Returns true if the netns initialization is completed successfully */
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index cb39a12b2f8295c605f08b5589932932150a1644..4303f2a4926243e2c0ff0c0387383cd8e0658019
100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -464,7 +464,7 @@ static void net_complete_free(void)
}
-static void net_free(struct net *net)
+void net_passive_dec(struct net *net)
{
if (refcount_dec_and_test(&net->passive)) {
kfree(rcu_access_pointer(net->gen));
@@ -482,7 +482,7 @@ void net_drop_ns(void *p)
struct net *net = (struct net *)p;
if (net)
- net_free(net);
+ net_passive_dec(net);
}
struct net *copy_net_ns(unsigned long flags,
@@ -523,7 +523,7 @@ struct net *copy_net_ns(unsigned long flags,
key_remove_domain(net->key_domain);
#endif
put_user_ns(user_ns);
- net_free(net);
+ net_passive_dec(net);
dec_ucounts:
dec_net_namespaces(ucounts);
return ERR_PTR(rv);
@@ -672,7 +672,7 @@ static void cleanup_net(struct work_struct *work)
key_remove_domain(net->key_domain);
#endif
put_user_ns(net->user_ns);
- net_free(net);
+ net_passive_dec(net);
}
cleanup_net_task = NULL;
}
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH v3 net 1/2] net: Fix dev_net(dev) race in unregister_netdevice_notifier_dev_net().
2025-02-11 5:12 ` [PATCH v3 net 1/2] net: Fix dev_net(dev) race in unregister_netdevice_notifier_dev_net() Kuniyuki Iwashima
2025-02-11 9:43 ` Eric Dumazet
@ 2025-02-11 19:00 ` kernel test robot
2025-02-12 0:16 ` kernel test robot
2 siblings, 0 replies; 7+ messages in thread
From: kernel test robot @ 2025-02-11 19:00 UTC (permalink / raw)
To: Kuniyuki Iwashima, David S. Miller, Eric Dumazet, Jakub Kicinski,
Paolo Abeni, Simon Horman
Cc: oe-kbuild-all, netdev, Kuniyuki Iwashima, Yael Chemla
Hi Kuniyuki,
kernel test robot noticed the following build errors:
[auto build test ERROR on net/main]
url: https://github.com/intel-lab-lkp/linux/commits/Kuniyuki-Iwashima/net-Fix-dev_net-dev-race-in-unregister_netdevice_notifier_dev_net/20250211-131633
base: net/main
patch link: https://lore.kernel.org/r/20250211051217.12613-2-kuniyu%40amazon.com
patch subject: [PATCH v3 net 1/2] net: Fix dev_net(dev) race in unregister_netdevice_notifier_dev_net().
config: sparc64-randconfig-001-20250212 (https://download.01.org/0day-ci/archive/20250212/202502120246.vNfiNOn3-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250212/202502120246.vNfiNOn3-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202502120246.vNfiNOn3-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from include/linux/instrumented.h:10,
from include/linux/uaccess.h:6,
from net/core/dev.c:71:
net/core/dev.c: In function 'rtnl_net_dev_lock':
>> net/core/dev.c:2087:56: error: 'possible_net_t' has no member named 'net'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^
include/linux/compiler.h:57:52: note: in definition of macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
net/core/dev.c:2087:9: note: in expansion of macro 'if'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~
include/linux/rcupdate.h:650:31: note: in expansion of macro '__rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^~~~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:26: note: in expansion of macro 'rcu_access_pointer'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~~~~~~~~~~~~~~~~~
>> net/core/dev.c:2087:56: error: 'possible_net_t' has no member named 'net'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^
include/linux/compiler.h:57:52: note: in definition of macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
net/core/dev.c:2087:9: note: in expansion of macro 'if'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~
include/linux/rcupdate.h:650:31: note: in expansion of macro '__rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^~~~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:26: note: in expansion of macro 'rcu_access_pointer'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~~~~~~~~~~~~~~~~~
>> net/core/dev.c:2087:56: error: 'possible_net_t' has no member named 'net'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^
include/linux/compiler.h:57:52: note: in definition of macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
net/core/dev.c:2087:9: note: in expansion of macro 'if'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~
include/linux/compiler.h:55:28: note: in expansion of macro '__trace_if_var'
55 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
| ^~~~~~~~~~~~~~
include/linux/compiler_types.h:522:17: note: in expansion of macro 'if'
522 | if (!(condition)) \
| ^~
include/linux/compiler_types.h:530:9: note: in expansion of macro '__compiletime_assert'
530 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:542:9: note: in expansion of macro '_compiletime_assert'
542 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:9: note: in expansion of macro 'compiletime_assert'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:28: note: in expansion of macro '__native_word'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~
include/asm-generic/rwonce.h:49:9: note: in expansion of macro 'compiletime_assert_rwonce_type'
49 | compiletime_assert_rwonce_type(x); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rcupdate.h:531:50: note: in expansion of macro 'READ_ONCE'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^~~~~~~~~
include/linux/rcupdate.h:650:31: note: in expansion of macro '__rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^~~~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:26: note: in expansion of macro 'rcu_access_pointer'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~~~~~~~~~~~~~~~~~
>> net/core/dev.c:2087:56: error: 'possible_net_t' has no member named 'net'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^
include/linux/compiler.h:57:52: note: in definition of macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
net/core/dev.c:2087:9: note: in expansion of macro 'if'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~
include/linux/compiler.h:55:28: note: in expansion of macro '__trace_if_var'
55 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
| ^~~~~~~~~~~~~~
include/linux/compiler_types.h:522:17: note: in expansion of macro 'if'
522 | if (!(condition)) \
| ^~
include/linux/compiler_types.h:530:9: note: in expansion of macro '__compiletime_assert'
530 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:542:9: note: in expansion of macro '_compiletime_assert'
542 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:9: note: in expansion of macro 'compiletime_assert'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:28: note: in expansion of macro '__native_word'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~
include/asm-generic/rwonce.h:49:9: note: in expansion of macro 'compiletime_assert_rwonce_type'
49 | compiletime_assert_rwonce_type(x); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rcupdate.h:531:50: note: in expansion of macro 'READ_ONCE'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^~~~~~~~~
include/linux/rcupdate.h:650:31: note: in expansion of macro '__rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^~~~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:26: note: in expansion of macro 'rcu_access_pointer'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~~~~~~~~~~~~~~~~~
>> net/core/dev.c:2087:56: error: 'possible_net_t' has no member named 'net'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^
include/linux/compiler.h:57:52: note: in definition of macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
net/core/dev.c:2087:9: note: in expansion of macro 'if'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~
include/linux/compiler.h:55:28: note: in expansion of macro '__trace_if_var'
55 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
| ^~~~~~~~~~~~~~
include/linux/compiler_types.h:522:17: note: in expansion of macro 'if'
522 | if (!(condition)) \
| ^~
include/linux/compiler_types.h:530:9: note: in expansion of macro '__compiletime_assert'
530 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:542:9: note: in expansion of macro '_compiletime_assert'
542 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:9: note: in expansion of macro 'compiletime_assert'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:28: note: in expansion of macro '__native_word'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~
include/asm-generic/rwonce.h:49:9: note: in expansion of macro 'compiletime_assert_rwonce_type'
49 | compiletime_assert_rwonce_type(x); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rcupdate.h:531:50: note: in expansion of macro 'READ_ONCE'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^~~~~~~~~
include/linux/rcupdate.h:650:31: note: in expansion of macro '__rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^~~~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:26: note: in expansion of macro 'rcu_access_pointer'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~~~~~~~~~~~~~~~~~
>> net/core/dev.c:2087:56: error: 'possible_net_t' has no member named 'net'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^
include/linux/compiler.h:57:52: note: in definition of macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
net/core/dev.c:2087:9: note: in expansion of macro 'if'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~
include/linux/compiler.h:55:28: note: in expansion of macro '__trace_if_var'
55 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
| ^~~~~~~~~~~~~~
include/linux/compiler_types.h:522:17: note: in expansion of macro 'if'
522 | if (!(condition)) \
| ^~
include/linux/compiler_types.h:530:9: note: in expansion of macro '__compiletime_assert'
530 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:542:9: note: in expansion of macro '_compiletime_assert'
542 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:9: note: in expansion of macro 'compiletime_assert'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:28: note: in expansion of macro '__native_word'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~
include/asm-generic/rwonce.h:49:9: note: in expansion of macro 'compiletime_assert_rwonce_type'
49 | compiletime_assert_rwonce_type(x); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rcupdate.h:531:50: note: in expansion of macro 'READ_ONCE'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^~~~~~~~~
include/linux/rcupdate.h:650:31: note: in expansion of macro '__rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^~~~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:26: note: in expansion of macro 'rcu_access_pointer'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~~~~~~~~~~~~~~~~~
>> net/core/dev.c:2087:56: error: 'possible_net_t' has no member named 'net'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^
include/linux/compiler.h:57:52: note: in definition of macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
net/core/dev.c:2087:9: note: in expansion of macro 'if'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~
include/linux/compiler.h:55:28: note: in expansion of macro '__trace_if_var'
55 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
| ^~~~~~~~~~~~~~
include/linux/compiler_types.h:522:17: note: in expansion of macro 'if'
522 | if (!(condition)) \
| ^~
include/linux/compiler_types.h:530:9: note: in expansion of macro '__compiletime_assert'
530 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:542:9: note: in expansion of macro '_compiletime_assert'
542 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:9: note: in expansion of macro 'compiletime_assert'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:49:9: note: in expansion of macro 'compiletime_assert_rwonce_type'
49 | compiletime_assert_rwonce_type(x); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rcupdate.h:531:50: note: in expansion of macro 'READ_ONCE'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^~~~~~~~~
include/linux/rcupdate.h:650:31: note: in expansion of macro '__rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^~~~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:26: note: in expansion of macro 'rcu_access_pointer'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~~~~~~~~~~~~~~~~~
>> net/core/dev.c:2087:56: error: 'possible_net_t' has no member named 'net'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^
include/linux/compiler.h:57:52: note: in definition of macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
net/core/dev.c:2087:9: note: in expansion of macro 'if'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~
include/linux/compiler.h:55:28: note: in expansion of macro '__trace_if_var'
55 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
| ^~~~~~~~~~~~~~
include/linux/compiler_types.h:522:17: note: in expansion of macro 'if'
522 | if (!(condition)) \
| ^~
include/linux/compiler_types.h:530:9: note: in expansion of macro '__compiletime_assert'
530 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:542:9: note: in expansion of macro '_compiletime_assert'
542 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:9: note: in expansion of macro 'compiletime_assert'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:28: note: in expansion of macro '__native_word'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~
include/asm-generic/rwonce.h:49:9: note: in expansion of macro 'compiletime_assert_rwonce_type'
49 | compiletime_assert_rwonce_type(x); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rcupdate.h:531:50: note: in expansion of macro 'READ_ONCE'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^~~~~~~~~
include/linux/rcupdate.h:650:31: note: in expansion of macro '__rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^~~~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:26: note: in expansion of macro 'rcu_access_pointer'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~~~~~~~~~~~~~~~~~
>> net/core/dev.c:2087:56: error: 'possible_net_t' has no member named 'net'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^
include/linux/compiler.h:57:52: note: in definition of macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
net/core/dev.c:2087:9: note: in expansion of macro 'if'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~
include/linux/compiler.h:55:28: note: in expansion of macro '__trace_if_var'
55 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
| ^~~~~~~~~~~~~~
include/linux/compiler_types.h:522:17: note: in expansion of macro 'if'
522 | if (!(condition)) \
| ^~
include/linux/compiler_types.h:530:9: note: in expansion of macro '__compiletime_assert'
530 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:542:9: note: in expansion of macro '_compiletime_assert'
542 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:9: note: in expansion of macro 'compiletime_assert'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:28: note: in expansion of macro '__native_word'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~
include/asm-generic/rwonce.h:49:9: note: in expansion of macro 'compiletime_assert_rwonce_type'
49 | compiletime_assert_rwonce_type(x); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rcupdate.h:531:50: note: in expansion of macro 'READ_ONCE'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^~~~~~~~~
include/linux/rcupdate.h:650:31: note: in expansion of macro '__rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^~~~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:26: note: in expansion of macro 'rcu_access_pointer'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~~~~~~~~~~~~~~~~~
>> net/core/dev.c:2087:56: error: 'possible_net_t' has no member named 'net'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^
include/linux/compiler.h:57:52: note: in definition of macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
net/core/dev.c:2087:9: note: in expansion of macro 'if'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~
include/linux/compiler.h:55:28: note: in expansion of macro '__trace_if_var'
55 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
| ^~~~~~~~~~~~~~
include/linux/compiler_types.h:522:17: note: in expansion of macro 'if'
522 | if (!(condition)) \
| ^~
include/linux/compiler_types.h:530:9: note: in expansion of macro '__compiletime_assert'
530 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:542:9: note: in expansion of macro '_compiletime_assert'
542 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:9: note: in expansion of macro 'compiletime_assert'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:28: note: in expansion of macro '__native_word'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~
include/asm-generic/rwonce.h:49:9: note: in expansion of macro 'compiletime_assert_rwonce_type'
49 | compiletime_assert_rwonce_type(x); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rcupdate.h:531:50: note: in expansion of macro 'READ_ONCE'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^~~~~~~~~
include/linux/rcupdate.h:650:31: note: in expansion of macro '__rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^~~~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:26: note: in expansion of macro 'rcu_access_pointer'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~~~~~~~~~~~~~~~~~
>> net/core/dev.c:2087:56: error: 'possible_net_t' has no member named 'net'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^
include/linux/compiler.h:57:52: note: in definition of macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
net/core/dev.c:2087:9: note: in expansion of macro 'if'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~
include/linux/compiler.h:55:28: note: in expansion of macro '__trace_if_var'
55 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
| ^~~~~~~~~~~~~~
include/linux/compiler_types.h:522:17: note: in expansion of macro 'if'
522 | if (!(condition)) \
| ^~
include/linux/compiler_types.h:530:9: note: in expansion of macro '__compiletime_assert'
530 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:542:9: note: in expansion of macro '_compiletime_assert'
542 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:9: note: in expansion of macro 'compiletime_assert'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:28: note: in expansion of macro '__native_word'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~
include/asm-generic/rwonce.h:49:9: note: in expansion of macro 'compiletime_assert_rwonce_type'
49 | compiletime_assert_rwonce_type(x); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rcupdate.h:531:50: note: in expansion of macro 'READ_ONCE'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^~~~~~~~~
include/linux/rcupdate.h:650:31: note: in expansion of macro '__rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^~~~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:26: note: in expansion of macro 'rcu_access_pointer'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~~~~~~~~~~~~~~~~~
>> net/core/dev.c:2087:56: error: 'possible_net_t' has no member named 'net'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^
include/linux/compiler.h:57:52: note: in definition of macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
net/core/dev.c:2087:9: note: in expansion of macro 'if'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~
include/linux/compiler.h:55:28: note: in expansion of macro '__trace_if_var'
55 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
| ^~~~~~~~~~~~~~
include/linux/compiler_types.h:522:17: note: in expansion of macro 'if'
522 | if (!(condition)) \
| ^~
include/linux/compiler_types.h:530:9: note: in expansion of macro '__compiletime_assert'
530 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:542:9: note: in expansion of macro '_compiletime_assert'
542 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:9: note: in expansion of macro 'compiletime_assert'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:49:9: note: in expansion of macro 'compiletime_assert_rwonce_type'
49 | compiletime_assert_rwonce_type(x); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rcupdate.h:531:50: note: in expansion of macro 'READ_ONCE'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^~~~~~~~~
include/linux/rcupdate.h:650:31: note: in expansion of macro '__rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^~~~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:26: note: in expansion of macro 'rcu_access_pointer'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~~~~~~~~~~~~~~~~~
>> net/core/dev.c:2087:56: error: 'possible_net_t' has no member named 'net'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^
include/linux/compiler.h:57:52: note: in definition of macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
net/core/dev.c:2087:9: note: in expansion of macro 'if'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~
include/linux/compiler.h:57:69: note: in expansion of macro '__trace_if_value'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~~~~~~~~~~~~~
include/linux/compiler.h:55:28: note: in expansion of macro '__trace_if_var'
55 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
| ^~~~~~~~~~~~~~
include/linux/compiler_types.h:522:17: note: in expansion of macro 'if'
522 | if (!(condition)) \
| ^~
include/linux/compiler_types.h:530:9: note: in expansion of macro '__compiletime_assert'
530 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:542:9: note: in expansion of macro '_compiletime_assert'
542 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:9: note: in expansion of macro 'compiletime_assert'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:28: note: in expansion of macro '__native_word'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~
include/asm-generic/rwonce.h:49:9: note: in expansion of macro 'compiletime_assert_rwonce_type'
49 | compiletime_assert_rwonce_type(x); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rcupdate.h:531:50: note: in expansion of macro 'READ_ONCE'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^~~~~~~~~
include/linux/rcupdate.h:650:31: note: in expansion of macro '__rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^~~~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:26: note: in expansion of macro 'rcu_access_pointer'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~~~~~~~~~~~~~~~~~
>> net/core/dev.c:2087:56: error: 'possible_net_t' has no member named 'net'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^
include/linux/compiler.h:57:52: note: in definition of macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
net/core/dev.c:2087:9: note: in expansion of macro 'if'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~
include/linux/compiler.h:57:69: note: in expansion of macro '__trace_if_value'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~~~~~~~~~~~~~
include/linux/compiler.h:55:28: note: in expansion of macro '__trace_if_var'
55 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
| ^~~~~~~~~~~~~~
include/linux/compiler_types.h:522:17: note: in expansion of macro 'if'
522 | if (!(condition)) \
| ^~
include/linux/compiler_types.h:530:9: note: in expansion of macro '__compiletime_assert'
530 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:542:9: note: in expansion of macro '_compiletime_assert'
542 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:9: note: in expansion of macro 'compiletime_assert'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:28: note: in expansion of macro '__native_word'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~
include/asm-generic/rwonce.h:49:9: note: in expansion of macro 'compiletime_assert_rwonce_type'
49 | compiletime_assert_rwonce_type(x); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rcupdate.h:531:50: note: in expansion of macro 'READ_ONCE'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^~~~~~~~~
include/linux/rcupdate.h:650:31: note: in expansion of macro '__rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^~~~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:26: note: in expansion of macro 'rcu_access_pointer'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~~~~~~~~~~~~~~~~~
>> net/core/dev.c:2087:56: error: 'possible_net_t' has no member named 'net'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^
include/linux/compiler.h:57:52: note: in definition of macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
net/core/dev.c:2087:9: note: in expansion of macro 'if'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~
include/linux/compiler.h:57:69: note: in expansion of macro '__trace_if_value'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~~~~~~~~~~~~~
include/linux/compiler.h:55:28: note: in expansion of macro '__trace_if_var'
55 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
| ^~~~~~~~~~~~~~
include/linux/compiler_types.h:522:17: note: in expansion of macro 'if'
522 | if (!(condition)) \
| ^~
include/linux/compiler_types.h:530:9: note: in expansion of macro '__compiletime_assert'
530 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:542:9: note: in expansion of macro '_compiletime_assert'
542 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:9: note: in expansion of macro 'compiletime_assert'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:28: note: in expansion of macro '__native_word'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~
include/asm-generic/rwonce.h:49:9: note: in expansion of macro 'compiletime_assert_rwonce_type'
49 | compiletime_assert_rwonce_type(x); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rcupdate.h:531:50: note: in expansion of macro 'READ_ONCE'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^~~~~~~~~
include/linux/rcupdate.h:650:31: note: in expansion of macro '__rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^~~~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:26: note: in expansion of macro 'rcu_access_pointer'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~~~~~~~~~~~~~~~~~
>> net/core/dev.c:2087:56: error: 'possible_net_t' has no member named 'net'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^
include/linux/compiler.h:57:52: note: in definition of macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
net/core/dev.c:2087:9: note: in expansion of macro 'if'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~
include/linux/compiler.h:57:69: note: in expansion of macro '__trace_if_value'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~~~~~~~~~~~~~
include/linux/compiler.h:55:28: note: in expansion of macro '__trace_if_var'
55 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
| ^~~~~~~~~~~~~~
include/linux/compiler_types.h:522:17: note: in expansion of macro 'if'
522 | if (!(condition)) \
| ^~
include/linux/compiler_types.h:530:9: note: in expansion of macro '__compiletime_assert'
530 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:542:9: note: in expansion of macro '_compiletime_assert'
542 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:9: note: in expansion of macro 'compiletime_assert'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:28: note: in expansion of macro '__native_word'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~
include/asm-generic/rwonce.h:49:9: note: in expansion of macro 'compiletime_assert_rwonce_type'
49 | compiletime_assert_rwonce_type(x); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rcupdate.h:531:50: note: in expansion of macro 'READ_ONCE'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^~~~~~~~~
include/linux/rcupdate.h:650:31: note: in expansion of macro '__rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^~~~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:26: note: in expansion of macro 'rcu_access_pointer'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~~~~~~~~~~~~~~~~~
>> net/core/dev.c:2087:56: error: 'possible_net_t' has no member named 'net'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^
include/linux/compiler.h:57:52: note: in definition of macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
net/core/dev.c:2087:9: note: in expansion of macro 'if'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~
include/linux/compiler.h:57:69: note: in expansion of macro '__trace_if_value'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~~~~~~~~~~~~~
include/linux/compiler.h:55:28: note: in expansion of macro '__trace_if_var'
55 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
| ^~~~~~~~~~~~~~
include/linux/compiler_types.h:522:17: note: in expansion of macro 'if'
522 | if (!(condition)) \
| ^~
include/linux/compiler_types.h:530:9: note: in expansion of macro '__compiletime_assert'
530 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:542:9: note: in expansion of macro '_compiletime_assert'
542 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:9: note: in expansion of macro 'compiletime_assert'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:49:9: note: in expansion of macro 'compiletime_assert_rwonce_type'
49 | compiletime_assert_rwonce_type(x); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rcupdate.h:531:50: note: in expansion of macro 'READ_ONCE'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^~~~~~~~~
include/linux/rcupdate.h:650:31: note: in expansion of macro '__rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^~~~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:26: note: in expansion of macro 'rcu_access_pointer'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~~~~~~~~~~~~~~~~~
>> net/core/dev.c:2087:56: error: 'possible_net_t' has no member named 'net'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^
include/linux/compiler.h:57:52: note: in definition of macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
net/core/dev.c:2087:9: note: in expansion of macro 'if'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~
include/asm-generic/rwonce.h:44:43: note: in expansion of macro '__unqual_scalar_typeof'
44 | #define __READ_ONCE(x) (*(const volatile __unqual_scalar_typeof(x) *)&(x))
| ^~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:50:9: note: in expansion of macro '__READ_ONCE'
50 | __READ_ONCE(x); \
| ^~~~~~~~~~~
include/linux/rcupdate.h:531:50: note: in expansion of macro 'READ_ONCE'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^~~~~~~~~
include/linux/rcupdate.h:650:31: note: in expansion of macro '__rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^~~~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:26: note: in expansion of macro 'rcu_access_pointer'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~~~~~~~~~~~~~~~~~
>> net/core/dev.c:2087:56: error: 'possible_net_t' has no member named 'net'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^
include/linux/compiler.h:57:52: note: in definition of macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
net/core/dev.c:2087:9: note: in expansion of macro 'if'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~
include/asm-generic/rwonce.h:50:9: note: in expansion of macro '__READ_ONCE'
50 | __READ_ONCE(x); \
| ^~~~~~~~~~~
include/linux/rcupdate.h:531:50: note: in expansion of macro 'READ_ONCE'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^~~~~~~~~
include/linux/rcupdate.h:650:31: note: in expansion of macro '__rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^~~~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:26: note: in expansion of macro 'rcu_access_pointer'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~~~~~~~~~~~~~~~~~
>> net/core/dev.c:2087:56: error: 'possible_net_t' has no member named 'net'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^
include/linux/compiler.h:57:52: note: in definition of macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
net/core/dev.c:2087:9: note: in expansion of macro 'if'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~
include/linux/rcupdate.h:650:31: note: in expansion of macro '__rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^~~~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:26: note: in expansion of macro 'rcu_access_pointer'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:56: error: 'possible_net_t' has no member named 'net'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^
include/linux/compiler.h:57:61: note: in definition of macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
net/core/dev.c:2087:9: note: in expansion of macro 'if'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~
include/linux/rcupdate.h:650:31: note: in expansion of macro '__rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^~~~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:26: note: in expansion of macro 'rcu_access_pointer'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:56: error: 'possible_net_t' has no member named 'net'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^
include/linux/compiler.h:57:61: note: in definition of macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
net/core/dev.c:2087:9: note: in expansion of macro 'if'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~
include/linux/rcupdate.h:650:31: note: in expansion of macro '__rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^~~~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:26: note: in expansion of macro 'rcu_access_pointer'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:56: error: 'possible_net_t' has no member named 'net'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^
include/linux/compiler.h:57:61: note: in definition of macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
net/core/dev.c:2087:9: note: in expansion of macro 'if'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~
include/linux/compiler.h:55:28: note: in expansion of macro '__trace_if_var'
55 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
| ^~~~~~~~~~~~~~
include/linux/compiler_types.h:522:17: note: in expansion of macro 'if'
522 | if (!(condition)) \
| ^~
include/linux/compiler_types.h:530:9: note: in expansion of macro '__compiletime_assert'
530 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:542:9: note: in expansion of macro '_compiletime_assert'
542 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:9: note: in expansion of macro 'compiletime_assert'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:28: note: in expansion of macro '__native_word'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~
include/asm-generic/rwonce.h:49:9: note: in expansion of macro 'compiletime_assert_rwonce_type'
49 | compiletime_assert_rwonce_type(x); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rcupdate.h:531:50: note: in expansion of macro 'READ_ONCE'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^~~~~~~~~
include/linux/rcupdate.h:650:31: note: in expansion of macro '__rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^~~~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:26: note: in expansion of macro 'rcu_access_pointer'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~~~~~~~~~~~~~~~~~
net/core/dev.c:2087:56: error: 'possible_net_t' has no member named 'net'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^
include/linux/compiler.h:57:61: note: in definition of macro '__trace_if_var'
57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
| ^~~~
net/core/dev.c:2087:9: note: in expansion of macro 'if'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~
include/linux/compiler.h:55:28: note: in expansion of macro '__trace_if_var'
55 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
| ^~~~~~~~~~~~~~
include/linux/compiler_types.h:522:17: note: in expansion of macro 'if'
522 | if (!(condition)) \
| ^~
include/linux/compiler_types.h:530:9: note: in expansion of macro '__compiletime_assert'
530 | __compiletime_assert(condition, msg, prefix, suffix)
vim +2087 net/core/dev.c
2072
2073 static void rtnl_net_dev_lock(struct net_device *dev)
2074 {
2075 struct net *net;
2076
2077 again:
2078 /* netns might be being dismantled. */
2079 rcu_read_lock();
2080 net = dev_net_rcu(dev);
2081 refcount_inc(&net->passive);
2082 rcu_read_unlock();
2083
2084 rtnl_net_lock(net);
2085
2086 /* dev might have been moved to another netns. */
> 2087 if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
2088 rtnl_net_unlock(net);
2089 net_drop_ns(net);
2090 goto again;
2091 }
2092 }
2093
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH v3 net 1/2] net: Fix dev_net(dev) race in unregister_netdevice_notifier_dev_net().
2025-02-11 5:12 ` [PATCH v3 net 1/2] net: Fix dev_net(dev) race in unregister_netdevice_notifier_dev_net() Kuniyuki Iwashima
2025-02-11 9:43 ` Eric Dumazet
2025-02-11 19:00 ` kernel test robot
@ 2025-02-12 0:16 ` kernel test robot
2 siblings, 0 replies; 7+ messages in thread
From: kernel test robot @ 2025-02-12 0:16 UTC (permalink / raw)
To: Kuniyuki Iwashima, David S. Miller, Eric Dumazet, Jakub Kicinski,
Paolo Abeni, Simon Horman
Cc: llvm, oe-kbuild-all, netdev, Kuniyuki Iwashima, Yael Chemla
Hi Kuniyuki,
kernel test robot noticed the following build errors:
[auto build test ERROR on net/main]
url: https://github.com/intel-lab-lkp/linux/commits/Kuniyuki-Iwashima/net-Fix-dev_net-dev-race-in-unregister_netdevice_notifier_dev_net/20250211-131633
base: net/main
patch link: https://lore.kernel.org/r/20250211051217.12613-2-kuniyu%40amazon.com
patch subject: [PATCH v3 net 1/2] net: Fix dev_net(dev) race in unregister_netdevice_notifier_dev_net().
config: s390-randconfig-002-20250212 (https://download.01.org/0day-ci/archive/20250212/202502120733.xsF3H4iE-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250212/202502120733.xsF3H4iE-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202502120733.xsF3H4iE-lkp@intel.com/
All errors (new ones prefixed by >>):
>> net/core/dev.c:2087:50: error: no member named 'net' in 'possible_net_t'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ~~~~~~~~~~~ ^
include/linux/rcupdate.h:650:53: note: expanded from macro 'rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^
include/linux/rcupdate.h:531:10: note: expanded from macro '__rcu_access_pointer'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^
>> net/core/dev.c:2087:50: error: no member named 'net' in 'possible_net_t'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ~~~~~~~~~~~ ^
include/linux/rcupdate.h:650:53: note: expanded from macro 'rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^
include/linux/rcupdate.h:531:31: note: expanded from macro '__rcu_access_pointer'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^
>> net/core/dev.c:2087:50: error: no member named 'net' in 'possible_net_t'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ~~~~~~~~~~~ ^
include/linux/rcupdate.h:650:53: note: expanded from macro 'rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^
include/linux/rcupdate.h:531:53: note: expanded from macro '__rcu_access_pointer'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^
include/asm-generic/rwonce.h:49:33: note: expanded from macro 'READ_ONCE'
49 | compiletime_assert_rwonce_type(x); \
| ^
note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler_types.h:542:22: note: expanded from macro 'compiletime_assert'
542 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~
include/linux/compiler_types.h:530:23: note: expanded from macro '_compiletime_assert'
530 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~
include/linux/compiler_types.h:522:9: note: expanded from macro '__compiletime_assert'
522 | if (!(condition)) \
| ^~~~~~~~~
>> net/core/dev.c:2087:50: error: no member named 'net' in 'possible_net_t'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ~~~~~~~~~~~ ^
include/linux/rcupdate.h:650:53: note: expanded from macro 'rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^
include/linux/rcupdate.h:531:53: note: expanded from macro '__rcu_access_pointer'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^
include/asm-generic/rwonce.h:49:33: note: expanded from macro 'READ_ONCE'
49 | compiletime_assert_rwonce_type(x); \
| ^
note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler_types.h:542:22: note: expanded from macro 'compiletime_assert'
542 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~
include/linux/compiler_types.h:530:23: note: expanded from macro '_compiletime_assert'
530 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~
include/linux/compiler_types.h:522:9: note: expanded from macro '__compiletime_assert'
522 | if (!(condition)) \
| ^~~~~~~~~
>> net/core/dev.c:2087:50: error: no member named 'net' in 'possible_net_t'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ~~~~~~~~~~~ ^
include/linux/rcupdate.h:650:53: note: expanded from macro 'rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^
include/linux/rcupdate.h:531:53: note: expanded from macro '__rcu_access_pointer'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^
include/asm-generic/rwonce.h:49:33: note: expanded from macro 'READ_ONCE'
49 | compiletime_assert_rwonce_type(x); \
| ^
note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler_types.h:542:22: note: expanded from macro 'compiletime_assert'
542 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~
include/linux/compiler_types.h:530:23: note: expanded from macro '_compiletime_assert'
530 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~
include/linux/compiler_types.h:522:9: note: expanded from macro '__compiletime_assert'
522 | if (!(condition)) \
| ^~~~~~~~~
>> net/core/dev.c:2087:50: error: no member named 'net' in 'possible_net_t'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ~~~~~~~~~~~ ^
include/linux/rcupdate.h:650:53: note: expanded from macro 'rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^
include/linux/rcupdate.h:531:53: note: expanded from macro '__rcu_access_pointer'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^
include/asm-generic/rwonce.h:49:33: note: expanded from macro 'READ_ONCE'
49 | compiletime_assert_rwonce_type(x); \
| ^
note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler_types.h:542:22: note: expanded from macro 'compiletime_assert'
542 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~
include/linux/compiler_types.h:530:23: note: expanded from macro '_compiletime_assert'
530 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~
include/linux/compiler_types.h:522:9: note: expanded from macro '__compiletime_assert'
522 | if (!(condition)) \
| ^~~~~~~~~
>> net/core/dev.c:2087:50: error: no member named 'net' in 'possible_net_t'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ~~~~~~~~~~~ ^
include/linux/rcupdate.h:650:53: note: expanded from macro 'rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^
include/linux/rcupdate.h:531:53: note: expanded from macro '__rcu_access_pointer'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^
include/asm-generic/rwonce.h:49:33: note: expanded from macro 'READ_ONCE'
49 | compiletime_assert_rwonce_type(x); \
| ^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler_types.h:542:22: note: expanded from macro 'compiletime_assert'
542 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~
include/linux/compiler_types.h:530:23: note: expanded from macro '_compiletime_assert'
530 | __compiletime_assert(condition, msg, prefix, suffix)
| ^~~~~~~~~
include/linux/compiler_types.h:522:9: note: expanded from macro '__compiletime_assert'
522 | if (!(condition)) \
| ^~~~~~~~~
>> net/core/dev.c:2087:50: error: no member named 'net' in 'possible_net_t'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ~~~~~~~~~~~ ^
include/linux/rcupdate.h:650:53: note: expanded from macro 'rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^
include/linux/rcupdate.h:531:53: note: expanded from macro '__rcu_access_pointer'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^
include/asm-generic/rwonce.h:50:14: note: expanded from macro 'READ_ONCE'
50 | __READ_ONCE(x); \
| ^
include/asm-generic/rwonce.h:44:65: note: expanded from macro '__READ_ONCE'
44 | #define __READ_ONCE(x) (*(const volatile __unqual_scalar_typeof(x) *)&(x))
| ^
include/linux/compiler_types.h:498:13: note: expanded from macro '__unqual_scalar_typeof'
498 | _Generic((x), \
| ^
>> net/core/dev.c:2087:50: error: no member named 'net' in 'possible_net_t'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ~~~~~~~~~~~ ^
include/linux/rcupdate.h:650:53: note: expanded from macro 'rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^
include/linux/rcupdate.h:531:53: note: expanded from macro '__rcu_access_pointer'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^
include/asm-generic/rwonce.h:50:14: note: expanded from macro 'READ_ONCE'
50 | __READ_ONCE(x); \
| ^
include/asm-generic/rwonce.h:44:65: note: expanded from macro '__READ_ONCE'
44 | #define __READ_ONCE(x) (*(const volatile __unqual_scalar_typeof(x) *)&(x))
| ^
include/linux/compiler_types.h:505:15: note: expanded from macro '__unqual_scalar_typeof'
505 | default: (x)))
| ^
>> net/core/dev.c:2087:50: error: no member named 'net' in 'possible_net_t'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ~~~~~~~~~~~ ^
include/linux/rcupdate.h:650:53: note: expanded from macro 'rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^
include/linux/rcupdate.h:531:53: note: expanded from macro '__rcu_access_pointer'
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ^
include/asm-generic/rwonce.h:50:14: note: expanded from macro 'READ_ONCE'
50 | __READ_ONCE(x); \
| ^
include/asm-generic/rwonce.h:44:72: note: expanded from macro '__READ_ONCE'
44 | #define __READ_ONCE(x) (*(const volatile __unqual_scalar_typeof(x) *)&(x))
| ^
>> net/core/dev.c:2087:50: error: no member named 'net' in 'possible_net_t'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ~~~~~~~~~~~ ^
include/linux/rcupdate.h:650:53: note: expanded from macro 'rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^
include/linux/rcupdate.h:533:12: note: expanded from macro '__rcu_access_pointer'
533 | ((typeof(*p) __force __kernel *)(local)); \
| ^
>> net/core/dev.c:2087:19: error: passing 'void' to parameter of incompatible type 'const struct net *'
2087 | if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rcupdate.h:650:31: note: expanded from macro 'rcu_access_pointer'
650 | #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rcupdate.h:529:47: note: expanded from macro '__rcu_access_pointer'
529 | #define __rcu_access_pointer(p, local, space) \
| ^
530 | ({ \
| ~~~~
531 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
532 | rcu_check_sparse(p, space); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
533 | ((typeof(*p) __force __kernel *)(local)); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
534 | })
| ~~
include/net/net_namespace.h:318:54: note: passing argument to parameter 'net2' here
318 | int net_eq(const struct net *net1, const struct net *net2)
| ^
>> net/core/dev.c:2089:14: error: called object type 'void *' is not a function or function pointer
2089 | net_drop_ns(net);
| ~~~~~~~~~~~^
net/core/dev.c:2099:13: error: called object type 'void *' is not a function or function pointer
2099 | net_drop_ns(net);
| ~~~~~~~~~~~^
14 errors generated.
vim +2087 net/core/dev.c
2072
2073 static void rtnl_net_dev_lock(struct net_device *dev)
2074 {
2075 struct net *net;
2076
2077 again:
2078 /* netns might be being dismantled. */
2079 rcu_read_lock();
2080 net = dev_net_rcu(dev);
2081 refcount_inc(&net->passive);
2082 rcu_read_unlock();
2083
2084 rtnl_net_lock(net);
2085
2086 /* dev might have been moved to another netns. */
> 2087 if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
2088 rtnl_net_unlock(net);
> 2089 net_drop_ns(net);
2090 goto again;
2091 }
2092 }
2093
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH v3 net 1/2] net: Fix dev_net(dev) race in unregister_netdevice_notifier_dev_net().
2025-02-11 9:43 ` Eric Dumazet
@ 2025-02-12 6:09 ` Kuniyuki Iwashima
0 siblings, 0 replies; 7+ messages in thread
From: Kuniyuki Iwashima @ 2025-02-12 6:09 UTC (permalink / raw)
To: edumazet; +Cc: davem, horms, kuba, kuni1840, kuniyu, netdev, pabeni, ychemla
From: Eric Dumazet <edumazet@google.com>
Date: Tue, 11 Feb 2025 10:43:30 +0100
> On Tue, Feb 11, 2025 at 6:13 AM Kuniyuki Iwashima <kuniyu@amazon.com> wrote:
> >
> > After the cited commit, dev_net(dev) is fetched before holding RTNL
> > and passed to __unregister_netdevice_notifier_net().
> >
> > However, dev_net(dev) might be different after holding RTNL.
> >
> > In the reported case [0], while removing a VF device, its netns was
> > being dismantled and the VF was moved to init_net.
> >
> > So the following sequence is basically illegal when dev was fetched
> > without lookup:
> >
> > net = dev_net(dev);
> > rtnl_net_lock(net);
> >
> > Let's use a new helper rtnl_net_dev_lock() to fix the race.
> >
> > It fetches dev_net_rcu(dev), bumps its net->passive, and checks if
> > dev_net_rcu(dev) is changed after rtnl_net_lock().
> >
> >
>
> > Fixes: 7fb1073300a2 ("net: Hold rtnl_net_lock() in (un)?register_netdevice_notifier_dev_net().")
> > Reported-by: Yael Chemla <ychemla@nvidia.com>
> > Closes: https://lore.kernel.org/netdev/146eabfe-123c-4970-901e-e961b4c09bc3@nvidia.com/
> > Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
> > ---
> > v3:
> > * Bump net->passive instead of maybe_get_net()
> > * Remove msleep(1) loop
> > * Use rcu_access_pointer() instead of rcu_read_lock().
> >
> > v2:
> > * Use dev_net_rcu().
> > * Use msleep(1) instead of cond_resched() after maybe_get_net()
> > * Remove cond_resched() after net_eq() check
> >
> > v1: https://lore.kernel.org/netdev/20250130232435.43622-2-kuniyu@amazon.com/
> > ---
> > net/core/dev.c | 41 +++++++++++++++++++++++++++++++++++++----
> > 1 file changed, 37 insertions(+), 4 deletions(-)
> >
> > diff --git a/net/core/dev.c b/net/core/dev.c
> > index 55e356a68db6..1248fb368e78 100644
> > --- a/net/core/dev.c
> > +++ b/net/core/dev.c
> > @@ -2070,6 +2070,35 @@ static void __move_netdevice_notifier_net(struct net *src_net,
> > __register_netdevice_notifier_net(dst_net, nb, true);
> > }
> >
> > +static void rtnl_net_dev_lock(struct net_device *dev)
> > +{
> > + struct net *net;
> > +
>
> #ifdef CONFIG_NET_NS
> > +again:
> #endif
>
> > + /* netns might be being dismantled. */
> > + rcu_read_lock();
> > + net = dev_net_rcu(dev);
> > + refcount_inc(&net->passive);
> > + rcu_read_unlock();
> > +
> > + rtnl_net_lock(net);
> > +
>
> #ifdef CONFIG_NET_NS
>
> > + /* dev might have been moved to another netns. */
> > + if (!net_eq(net, rcu_access_pointer(dev->nd_net.net))) {
> > + rtnl_net_unlock(net);
> > + net_drop_ns(net);
> > + goto again;
> > + }
>
> #endif
>
> Or perhaps not use net_drop_ns() and rename/export net_free() to
> net_passive_dec() ?
Ah, we need both guard (for dev->nd_net.net) and net_passive_dec().
Or, we can simply rtnl_net_lock(&init_net) for !CONFIG_NET_NS and
keep net_drop_ns().
The former looked cleaner, so I'll do so in v4.
Thanks!
>
>
> diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
> index 7ba1402ca7796663bed3373b1a0c6a0249cd1599..62d1a1c39547bd5cca71082b8172d453b56a96db
> 100644
> --- a/include/net/net_namespace.h
> +++ b/include/net/net_namespace.h
> @@ -297,7 +297,7 @@ static inline int check_net(const struct net *net)
> }
>
> void net_drop_ns(void *);
> -
> +void net_passive_dec(struct net *net);
> #else
>
> static inline struct net *get_net(struct net *net)
> @@ -326,6 +326,11 @@ static inline int check_net(const struct net *net)
> }
>
> #define net_drop_ns NULL
> +static inline void net_passive_dec(struct net *net)
> +{
> + refcount_dec(&net->passive);
> +}
> +
> #endif
>
> /* Returns true if the netns initialization is completed successfully */
> diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
> index cb39a12b2f8295c605f08b5589932932150a1644..4303f2a4926243e2c0ff0c0387383cd8e0658019
> 100644
> --- a/net/core/net_namespace.c
> +++ b/net/core/net_namespace.c
> @@ -464,7 +464,7 @@ static void net_complete_free(void)
>
> }
>
> -static void net_free(struct net *net)
> +void net_passive_dec(struct net *net)
> {
> if (refcount_dec_and_test(&net->passive)) {
> kfree(rcu_access_pointer(net->gen));
> @@ -482,7 +482,7 @@ void net_drop_ns(void *p)
> struct net *net = (struct net *)p;
>
> if (net)
> - net_free(net);
> + net_passive_dec(net);
> }
>
> struct net *copy_net_ns(unsigned long flags,
> @@ -523,7 +523,7 @@ struct net *copy_net_ns(unsigned long flags,
> key_remove_domain(net->key_domain);
> #endif
> put_user_ns(user_ns);
> - net_free(net);
> + net_passive_dec(net);
> dec_ucounts:
> dec_net_namespaces(ucounts);
> return ERR_PTR(rv);
> @@ -672,7 +672,7 @@ static void cleanup_net(struct work_struct *work)
> key_remove_domain(net->key_domain);
> #endif
> put_user_ns(net->user_ns);
> - net_free(net);
> + net_passive_dec(net);
> }
> cleanup_net_task = NULL;
> }
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2025-02-12 6:09 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2025-02-11 5:12 [PATCH v3 net 0/2] net: Fix race of rtnl_net_lock(dev_net(dev)) Kuniyuki Iwashima
2025-02-11 5:12 ` [PATCH v3 net 1/2] net: Fix dev_net(dev) race in unregister_netdevice_notifier_dev_net() Kuniyuki Iwashima
2025-02-11 9:43 ` Eric Dumazet
2025-02-12 6:09 ` Kuniyuki Iwashima
2025-02-11 19:00 ` kernel test robot
2025-02-12 0:16 ` kernel test robot
2025-02-11 5:12 ` [PATCH v3 net 2/2] dev: Use rtnl_net_dev_lock() in unregister_netdev() Kuniyuki Iwashima
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