* [PATCH nf-next] netfilter: ecache: don't use nf_conn spinlock
@ 2022-02-04 12:13 Florian Westphal
2022-02-05 11:05 ` kernel test robot
0 siblings, 1 reply; 3+ messages in thread
From: Florian Westphal @ 2022-02-04 12:13 UTC (permalink / raw)
To: netfilter-devel; +Cc: Florian Westphal
For updating eache missed value we can use cmpxchg.
This also avoids need to disable BH.
Signed-off-by: Florian Westphal <fw@strlen.de>
---
net/netfilter/nf_conntrack_ecache.c | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)
diff --git a/net/netfilter/nf_conntrack_ecache.c b/net/netfilter/nf_conntrack_ecache.c
index 873908054f7f..e99b39173198 100644
--- a/net/netfilter/nf_conntrack_ecache.c
+++ b/net/netfilter/nf_conntrack_ecache.c
@@ -135,9 +135,9 @@ static int __nf_conntrack_eventmask_report(struct nf_conntrack_ecache *e,
const unsigned long missed,
const struct nf_ct_event *item)
{
- struct nf_conn *ct = item->ct;
struct net *net = nf_ct_net(item->ct);
struct nf_ct_event_notifier *notify;
+ unsigned long old, want;
int ret;
if (!((events | missed) & e->ctmask))
@@ -157,12 +157,13 @@ static int __nf_conntrack_eventmask_report(struct nf_conntrack_ecache *e,
if (likely(ret >= 0 && missed == 0))
return 0;
- spin_lock_bh(&ct->lock);
- if (ret < 0)
- e->missed |= events;
- else
- e->missed &= ~missed;
- spin_unlock_bh(&ct->lock);
+ do {
+ old = READ_ONCE(e->missed);
+ if (ret < 0)
+ want = old | events;
+ else
+ want = old & ~missed;
+ } while (cmpxchg(&e->missed, old, want) != old);
return ret;
}
--
2.34.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH nf-next] netfilter: ecache: don't use nf_conn spinlock
2022-02-04 12:13 [PATCH nf-next] netfilter: ecache: don't use nf_conn spinlock Florian Westphal
@ 2022-02-05 11:05 ` kernel test robot
0 siblings, 0 replies; 3+ messages in thread
From: kernel test robot @ 2022-02-05 11:05 UTC (permalink / raw)
To: Florian Westphal, netfilter-devel; +Cc: kbuild-all, Florian Westphal
Hi Florian,
I love your patch! Yet something to improve:
[auto build test ERROR on nf-next/master]
url: https://github.com/0day-ci/linux/commits/Florian-Westphal/netfilter-ecache-don-t-use-nf_conn-spinlock/20220204-201517
base: https://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next.git master
config: xtensa-allyesconfig (https://download.01.org/0day-ci/archive/20220205/202202051843.JlYlWL5J-lkp@intel.com/config)
compiler: xtensa-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/0day-ci/linux/commit/51e57aa73be370438bf4bc64a36c95434debb238
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Florian-Westphal/netfilter-ecache-don-t-use-nf_conn-spinlock/20220204-201517
git checkout 51e57aa73be370438bf4bc64a36c95434debb238
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=xtensa SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
`.exit.text' referenced in section `__jump_table' of fs/cifs/cifsfs.o: defined in discarded section `.exit.text' of fs/cifs/cifsfs.o
`.exit.text' referenced in section `__jump_table' of fs/cifs/cifsfs.o: defined in discarded section `.exit.text' of fs/cifs/cifsfs.o
`.exit.text' referenced in section `__jump_table' of fs/fuse/inode.o: defined in discarded section `.exit.text' of fs/fuse/inode.o
`.exit.text' referenced in section `__jump_table' of fs/fuse/inode.o: defined in discarded section `.exit.text' of fs/fuse/inode.o
`.exit.text' referenced in section `__jump_table' of fs/ceph/super.o: defined in discarded section `.exit.text' of fs/ceph/super.o
`.exit.text' referenced in section `__jump_table' of fs/ceph/super.o: defined in discarded section `.exit.text' of fs/ceph/super.o
`.exit.text' referenced in section `__jump_table' of drivers/rapidio/rio_cm.o: defined in discarded section `.exit.text' of drivers/rapidio/rio_cm.o
`.exit.text' referenced in section `__jump_table' of drivers/rapidio/rio_cm.o: defined in discarded section `.exit.text' of drivers/rapidio/rio_cm.o
`.exit.text' referenced in section `__jump_table' of drivers/rapidio/switches/idt_gen2.o: defined in discarded section `.exit.text' of drivers/rapidio/switches/idt_gen2.o
`.exit.text' referenced in section `__jump_table' of drivers/rapidio/switches/idt_gen2.o: defined in discarded section `.exit.text' of drivers/rapidio/switches/idt_gen2.o
`.exit.text' referenced in section `__jump_table' of drivers/rapidio/switches/idt_gen2.o: defined in discarded section `.exit.text' of drivers/rapidio/switches/idt_gen2.o
`.exit.text' referenced in section `__jump_table' of drivers/rapidio/switches/idt_gen2.o: defined in discarded section `.exit.text' of drivers/rapidio/switches/idt_gen2.o
`.exit.text' referenced in section `__jump_table' of drivers/rapidio/switches/idt_gen3.o: defined in discarded section `.exit.text' of drivers/rapidio/switches/idt_gen3.o
`.exit.text' referenced in section `__jump_table' of drivers/rapidio/switches/idt_gen3.o: defined in discarded section `.exit.text' of drivers/rapidio/switches/idt_gen3.o
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`.exit.text' referenced in section `__jump_table' of drivers/rapidio/switches/idt_gen3.o: defined in discarded section `.exit.text' of drivers/rapidio/switches/idt_gen3.o
`.exit.text' referenced in section `__jump_table' of drivers/video/fbdev/vt8623fb.o: defined in discarded section `.exit.text' of drivers/video/fbdev/vt8623fb.o
`.exit.text' referenced in section `__jump_table' of drivers/video/fbdev/vt8623fb.o: defined in discarded section `.exit.text' of drivers/video/fbdev/vt8623fb.o
`.exit.text' referenced in section `__jump_table' of drivers/video/fbdev/s3fb.o: defined in discarded section `.exit.text' of drivers/video/fbdev/s3fb.o
`.exit.text' referenced in section `__jump_table' of drivers/video/fbdev/s3fb.o: defined in discarded section `.exit.text' of drivers/video/fbdev/s3fb.o
`.exit.text' referenced in section `__jump_table' of drivers/video/fbdev/arkfb.o: defined in discarded section `.exit.text' of drivers/video/fbdev/arkfb.o
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`.exit.text' referenced in section `__jump_table' of drivers/target/target_core_configfs.o: defined in discarded section `.exit.text' of drivers/target/target_core_configfs.o
`.exit.text' referenced in section `__jump_table' of drivers/mtd/maps/pcmciamtd.o: defined in discarded section `.exit.text' of drivers/mtd/maps/pcmciamtd.o
`.exit.text' referenced in section `__jump_table' of drivers/mtd/maps/pcmciamtd.o: defined in discarded section `.exit.text' of drivers/mtd/maps/pcmciamtd.o
`.exit.text' referenced in section `__jump_table' of drivers/net/wireless/zydas/zd1211rw/zd_usb.o: defined in discarded section `.exit.text' of drivers/net/wireless/zydas/zd1211rw/zd_usb.o
`.exit.text' referenced in section `__jump_table' of drivers/net/wireless/zydas/zd1211rw/zd_usb.o: defined in discarded section `.exit.text' of drivers/net/wireless/zydas/zd1211rw/zd_usb.o
`.exit.text' referenced in section `__jump_table' of drivers/net/wireless/ray_cs.o: defined in discarded section `.exit.text' of drivers/net/wireless/ray_cs.o
`.exit.text' referenced in section `__jump_table' of drivers/net/wireless/ray_cs.o: defined in discarded section `.exit.text' of drivers/net/wireless/ray_cs.o
`.exit.text' referenced in section `__jump_table' of drivers/net/wireless/mac80211_hwsim.o: defined in discarded section `.exit.text' of drivers/net/wireless/mac80211_hwsim.o
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`.exit.text' referenced in section `__jump_table' of drivers/usb/gadget/legacy/inode.o: defined in discarded section `.exit.text' of drivers/usb/gadget/legacy/inode.o
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`.exit.text' referenced in section `__jump_table' of drivers/media/common/siano/smscoreapi.o: defined in discarded section `.exit.text' of drivers/media/common/siano/smscoreapi.o
`.exit.text' referenced in section `__jump_table' of drivers/media/common/siano/smscoreapi.o: defined in discarded section `.exit.text' of drivers/media/common/siano/smscoreapi.o
`.exit.text' referenced in section `__jump_table' of drivers/vme/bridges/vme_fake.o: defined in discarded section `.exit.text' of drivers/vme/bridges/vme_fake.o
`.exit.text' referenced in section `__jump_table' of drivers/vme/bridges/vme_fake.o: defined in discarded section `.exit.text' of drivers/vme/bridges/vme_fake.o
`.exit.text' referenced in section `.data' of sound/soc/codecs/tlv320adc3xxx.o: defined in discarded section `.exit.text' of sound/soc/codecs/tlv320adc3xxx.o
xtensa-linux-ld: net/netfilter/nf_conntrack_ecache.o: in function `nf_conntrack_register_notifier':
>> (.text+0x204): undefined reference to `__cmpxchg_called_with_bad_pointer'
xtensa-linux-ld: net/netfilter/nf_conntrack_ecache.o: in function `__nf_conntrack_eventmask_report':
>> nf_conntrack_ecache.c:(.text+0x341): undefined reference to `__cmpxchg_called_with_bad_pointer'
`.exit.text' referenced in section `__jump_table' of net/netfilter/nf_conntrack_h323_main.o: defined in discarded section `.exit.text' of net/netfilter/nf_conntrack_h323_main.o
`.exit.text' referenced in section `__jump_table' of net/netfilter/nf_conntrack_h323_main.o: defined in discarded section `.exit.text' of net/netfilter/nf_conntrack_h323_main.o
`.exit.text' referenced in section `__jump_table' of net/netfilter/ipset/ip_set_core.o: defined in discarded section `.exit.text' of net/netfilter/ipset/ip_set_core.o
`.exit.text' referenced in section `__jump_table' of net/netfilter/ipset/ip_set_core.o: defined in discarded section `.exit.text' of net/netfilter/ipset/ip_set_core.o
`.exit.text' referenced in section `__jump_table' of net/ceph/ceph_common.o: defined in discarded section `.exit.text' of net/ceph/ceph_common.o
`.exit.text' referenced in section `__jump_table' of net/ceph/ceph_common.o: defined in discarded section `.exit.text' of net/ceph/ceph_common.o
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH nf-next] netfilter: ecache: don't use nf_conn spinlock
@ 2022-02-05 11:05 ` kernel test robot
0 siblings, 0 replies; 3+ messages in thread
From: kernel test robot @ 2022-02-05 11:05 UTC (permalink / raw)
To: kbuild-all
[-- Attachment #1: Type: text/plain, Size: 10958 bytes --]
Hi Florian,
I love your patch! Yet something to improve:
[auto build test ERROR on nf-next/master]
url: https://github.com/0day-ci/linux/commits/Florian-Westphal/netfilter-ecache-don-t-use-nf_conn-spinlock/20220204-201517
base: https://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next.git master
config: xtensa-allyesconfig (https://download.01.org/0day-ci/archive/20220205/202202051843.JlYlWL5J-lkp(a)intel.com/config)
compiler: xtensa-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/0day-ci/linux/commit/51e57aa73be370438bf4bc64a36c95434debb238
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Florian-Westphal/netfilter-ecache-don-t-use-nf_conn-spinlock/20220204-201517
git checkout 51e57aa73be370438bf4bc64a36c95434debb238
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=xtensa SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
`.exit.text' referenced in section `__jump_table' of fs/cifs/cifsfs.o: defined in discarded section `.exit.text' of fs/cifs/cifsfs.o
`.exit.text' referenced in section `__jump_table' of fs/cifs/cifsfs.o: defined in discarded section `.exit.text' of fs/cifs/cifsfs.o
`.exit.text' referenced in section `__jump_table' of fs/fuse/inode.o: defined in discarded section `.exit.text' of fs/fuse/inode.o
`.exit.text' referenced in section `__jump_table' of fs/fuse/inode.o: defined in discarded section `.exit.text' of fs/fuse/inode.o
`.exit.text' referenced in section `__jump_table' of fs/ceph/super.o: defined in discarded section `.exit.text' of fs/ceph/super.o
`.exit.text' referenced in section `__jump_table' of fs/ceph/super.o: defined in discarded section `.exit.text' of fs/ceph/super.o
`.exit.text' referenced in section `__jump_table' of drivers/rapidio/rio_cm.o: defined in discarded section `.exit.text' of drivers/rapidio/rio_cm.o
`.exit.text' referenced in section `__jump_table' of drivers/rapidio/rio_cm.o: defined in discarded section `.exit.text' of drivers/rapidio/rio_cm.o
`.exit.text' referenced in section `__jump_table' of drivers/rapidio/switches/idt_gen2.o: defined in discarded section `.exit.text' of drivers/rapidio/switches/idt_gen2.o
`.exit.text' referenced in section `__jump_table' of drivers/rapidio/switches/idt_gen2.o: defined in discarded section `.exit.text' of drivers/rapidio/switches/idt_gen2.o
`.exit.text' referenced in section `__jump_table' of drivers/rapidio/switches/idt_gen2.o: defined in discarded section `.exit.text' of drivers/rapidio/switches/idt_gen2.o
`.exit.text' referenced in section `__jump_table' of drivers/rapidio/switches/idt_gen2.o: defined in discarded section `.exit.text' of drivers/rapidio/switches/idt_gen2.o
`.exit.text' referenced in section `__jump_table' of drivers/rapidio/switches/idt_gen3.o: defined in discarded section `.exit.text' of drivers/rapidio/switches/idt_gen3.o
`.exit.text' referenced in section `__jump_table' of drivers/rapidio/switches/idt_gen3.o: defined in discarded section `.exit.text' of drivers/rapidio/switches/idt_gen3.o
`.exit.text' referenced in section `__jump_table' of drivers/rapidio/switches/idt_gen3.o: defined in discarded section `.exit.text' of drivers/rapidio/switches/idt_gen3.o
`.exit.text' referenced in section `__jump_table' of drivers/rapidio/switches/idt_gen3.o: defined in discarded section `.exit.text' of drivers/rapidio/switches/idt_gen3.o
`.exit.text' referenced in section `__jump_table' of drivers/video/fbdev/vt8623fb.o: defined in discarded section `.exit.text' of drivers/video/fbdev/vt8623fb.o
`.exit.text' referenced in section `__jump_table' of drivers/video/fbdev/vt8623fb.o: defined in discarded section `.exit.text' of drivers/video/fbdev/vt8623fb.o
`.exit.text' referenced in section `__jump_table' of drivers/video/fbdev/s3fb.o: defined in discarded section `.exit.text' of drivers/video/fbdev/s3fb.o
`.exit.text' referenced in section `__jump_table' of drivers/video/fbdev/s3fb.o: defined in discarded section `.exit.text' of drivers/video/fbdev/s3fb.o
`.exit.text' referenced in section `__jump_table' of drivers/video/fbdev/arkfb.o: defined in discarded section `.exit.text' of drivers/video/fbdev/arkfb.o
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`.exit.text' referenced in section `__jump_table' of drivers/misc/phantom.o: defined in discarded section `.exit.text' of drivers/misc/phantom.o
`.exit.text' referenced in section `__jump_table' of drivers/misc/phantom.o: defined in discarded section `.exit.text' of drivers/misc/phantom.o
`.exit.text' referenced in section `__jump_table' of drivers/misc/habanalabs/common/habanalabs_drv.o: defined in discarded section `.exit.text' of drivers/misc/habanalabs/common/habanalabs_drv.o
`.exit.text' referenced in section `__jump_table' of drivers/misc/habanalabs/common/habanalabs_drv.o: defined in discarded section `.exit.text' of drivers/misc/habanalabs/common/habanalabs_drv.o
`.exit.text' referenced in section `__jump_table' of drivers/scsi/fcoe/fcoe.o: defined in discarded section `.exit.text' of drivers/scsi/fcoe/fcoe.o
`.exit.text' referenced in section `__jump_table' of drivers/scsi/fcoe/fcoe.o: defined in discarded section `.exit.text' of drivers/scsi/fcoe/fcoe.o
`.exit.text' referenced in section `__jump_table' of drivers/scsi/cxgbi/libcxgbi.o: defined in discarded section `.exit.text' of drivers/scsi/cxgbi/libcxgbi.o
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`.exit.text' referenced in section `__jump_table' of drivers/target/target_core_configfs.o: defined in discarded section `.exit.text' of drivers/target/target_core_configfs.o
`.exit.text' referenced in section `__jump_table' of drivers/mtd/maps/pcmciamtd.o: defined in discarded section `.exit.text' of drivers/mtd/maps/pcmciamtd.o
`.exit.text' referenced in section `__jump_table' of drivers/mtd/maps/pcmciamtd.o: defined in discarded section `.exit.text' of drivers/mtd/maps/pcmciamtd.o
`.exit.text' referenced in section `__jump_table' of drivers/net/wireless/zydas/zd1211rw/zd_usb.o: defined in discarded section `.exit.text' of drivers/net/wireless/zydas/zd1211rw/zd_usb.o
`.exit.text' referenced in section `__jump_table' of drivers/net/wireless/zydas/zd1211rw/zd_usb.o: defined in discarded section `.exit.text' of drivers/net/wireless/zydas/zd1211rw/zd_usb.o
`.exit.text' referenced in section `__jump_table' of drivers/net/wireless/ray_cs.o: defined in discarded section `.exit.text' of drivers/net/wireless/ray_cs.o
`.exit.text' referenced in section `__jump_table' of drivers/net/wireless/ray_cs.o: defined in discarded section `.exit.text' of drivers/net/wireless/ray_cs.o
`.exit.text' referenced in section `__jump_table' of drivers/net/wireless/mac80211_hwsim.o: defined in discarded section `.exit.text' of drivers/net/wireless/mac80211_hwsim.o
`.exit.text' referenced in section `__jump_table' of drivers/net/wireless/mac80211_hwsim.o: defined in discarded section `.exit.text' of drivers/net/wireless/mac80211_hwsim.o
`.exit.text' referenced in section `__jump_table' of drivers/usb/gadget/legacy/inode.o: defined in discarded section `.exit.text' of drivers/usb/gadget/legacy/inode.o
`.exit.text' referenced in section `__jump_table' of drivers/usb/gadget/legacy/inode.o: defined in discarded section `.exit.text' of drivers/usb/gadget/legacy/inode.o
`.exit.text' referenced in section `__jump_table' of drivers/usb/gadget/legacy/g_ffs.o: defined in discarded section `.exit.text' of drivers/usb/gadget/legacy/g_ffs.o
`.exit.text' referenced in section `__jump_table' of drivers/usb/gadget/legacy/g_ffs.o: defined in discarded section `.exit.text' of drivers/usb/gadget/legacy/g_ffs.o
`.exit.text' referenced in section `__jump_table' of drivers/media/common/siano/smscoreapi.o: defined in discarded section `.exit.text' of drivers/media/common/siano/smscoreapi.o
`.exit.text' referenced in section `__jump_table' of drivers/media/common/siano/smscoreapi.o: defined in discarded section `.exit.text' of drivers/media/common/siano/smscoreapi.o
`.exit.text' referenced in section `__jump_table' of drivers/vme/bridges/vme_fake.o: defined in discarded section `.exit.text' of drivers/vme/bridges/vme_fake.o
`.exit.text' referenced in section `__jump_table' of drivers/vme/bridges/vme_fake.o: defined in discarded section `.exit.text' of drivers/vme/bridges/vme_fake.o
`.exit.text' referenced in section `.data' of sound/soc/codecs/tlv320adc3xxx.o: defined in discarded section `.exit.text' of sound/soc/codecs/tlv320adc3xxx.o
xtensa-linux-ld: net/netfilter/nf_conntrack_ecache.o: in function `nf_conntrack_register_notifier':
>> (.text+0x204): undefined reference to `__cmpxchg_called_with_bad_pointer'
xtensa-linux-ld: net/netfilter/nf_conntrack_ecache.o: in function `__nf_conntrack_eventmask_report':
>> nf_conntrack_ecache.c:(.text+0x341): undefined reference to `__cmpxchg_called_with_bad_pointer'
`.exit.text' referenced in section `__jump_table' of net/netfilter/nf_conntrack_h323_main.o: defined in discarded section `.exit.text' of net/netfilter/nf_conntrack_h323_main.o
`.exit.text' referenced in section `__jump_table' of net/netfilter/nf_conntrack_h323_main.o: defined in discarded section `.exit.text' of net/netfilter/nf_conntrack_h323_main.o
`.exit.text' referenced in section `__jump_table' of net/netfilter/ipset/ip_set_core.o: defined in discarded section `.exit.text' of net/netfilter/ipset/ip_set_core.o
`.exit.text' referenced in section `__jump_table' of net/netfilter/ipset/ip_set_core.o: defined in discarded section `.exit.text' of net/netfilter/ipset/ip_set_core.o
`.exit.text' referenced in section `__jump_table' of net/ceph/ceph_common.o: defined in discarded section `.exit.text' of net/ceph/ceph_common.o
`.exit.text' referenced in section `__jump_table' of net/ceph/ceph_common.o: defined in discarded section `.exit.text' of net/ceph/ceph_common.o
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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2022-02-04 12:13 [PATCH nf-next] netfilter: ecache: don't use nf_conn spinlock Florian Westphal
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