* drivers/nvme/host/tcp.c:835:12: warning: stack frame size (2256) exceeds limit (2048) in 'nvme_tcp_recv_skb'
@ 2023-07-20 3:10 kernel test robot
2023-07-24 7:46 ` Sagi Grimberg
0 siblings, 1 reply; 3+ messages in thread
From: kernel test robot @ 2023-07-20 3:10 UTC (permalink / raw)
To: Varun Prakash
Cc: llvm, oe-kbuild-all, linux-kernel, Christoph Hellwig,
Sagi Grimberg
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: bfa3037d828050896ae52f6467b6ca2489ae6fb1
commit: c2700d2886a87f83f31e0a301de1d2350b52c79b nvme-tcp: send H2CData PDUs based on MAXH2CDATA
date: 1 year, 5 months ago
config: riscv-randconfig-r042-20230720 (https://download.01.org/0day-ci/archive/20230720/202307201141.PYWS6ird-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce: (https://download.01.org/0day-ci/archive/20230720/202307201141.PYWS6ird-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/202307201141.PYWS6ird-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/nvme/host/tcp.c:835:12: warning: stack frame size (2256) exceeds limit (2048) in 'nvme_tcp_recv_skb' [-Wframe-larger-than]
835 | static int nvme_tcp_recv_skb(read_descriptor_t *desc, struct sk_buff *skb,
| ^
1 warning generated.
vim +/nvme_tcp_recv_skb +835 drivers/nvme/host/tcp.c
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 834
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 @835 static int nvme_tcp_recv_skb(read_descriptor_t *desc, struct sk_buff *skb,
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 836 unsigned int offset, size_t len)
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 837 {
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 838 struct nvme_tcp_queue *queue = desc->arg.data;
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 839 size_t consumed = len;
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 840 int result;
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 841
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 842 while (len) {
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 843 switch (nvme_tcp_recv_state(queue)) {
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 844 case NVME_TCP_RECV_PDU:
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 845 result = nvme_tcp_recv_pdu(queue, skb, &offset, &len);
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 846 break;
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 847 case NVME_TCP_RECV_DATA:
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 848 result = nvme_tcp_recv_data(queue, skb, &offset, &len);
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 849 break;
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 850 case NVME_TCP_RECV_DDGST:
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 851 result = nvme_tcp_recv_ddgst(queue, skb, &offset, &len);
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 852 break;
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 853 default:
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 854 result = -EFAULT;
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 855 }
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 856 if (result) {
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 857 dev_err(queue->ctrl->ctrl.device,
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 858 "receive failed: %d\n", result);
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 859 queue->rd_enabled = false;
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 860 nvme_tcp_error_recovery(&queue->ctrl->ctrl);
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 861 return result;
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 862 }
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 863 }
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 864
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 865 return consumed;
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 866 }
3f2304f8c6d6ed Sagi Grimberg 2018-12-03 867
:::::: The code at line 835 was first introduced by commit
:::::: 3f2304f8c6d6ed97849057bd16fee99e434ca796 nvme-tcp: add NVMe over TCP host driver
:::::: TO: Sagi Grimberg <sagi@lightbitslabs.com>
:::::: CC: Christoph Hellwig <hch@lst.de>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: drivers/nvme/host/tcp.c:835:12: warning: stack frame size (2256) exceeds limit (2048) in 'nvme_tcp_recv_skb'
2023-07-20 3:10 drivers/nvme/host/tcp.c:835:12: warning: stack frame size (2256) exceeds limit (2048) in 'nvme_tcp_recv_skb' kernel test robot
@ 2023-07-24 7:46 ` Sagi Grimberg
2023-07-24 17:07 ` Nick Desaulniers
0 siblings, 1 reply; 3+ messages in thread
From: Sagi Grimberg @ 2023-07-24 7:46 UTC (permalink / raw)
To: kernel test robot, Varun Prakash
Cc: llvm, oe-kbuild-all, linux-kernel, Christoph Hellwig
On 7/20/23 06:10, kernel test robot wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head: bfa3037d828050896ae52f6467b6ca2489ae6fb1
> commit: c2700d2886a87f83f31e0a301de1d2350b52c79b nvme-tcp: send H2CData PDUs based on MAXH2CDATA
> date: 1 year, 5 months ago
> config: riscv-randconfig-r042-20230720 (https://download.01.org/0day-ci/archive/20230720/202307201141.PYWS6ird-lkp@intel.com/config)
> compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
> reproduce: (https://download.01.org/0day-ci/archive/20230720/202307201141.PYWS6ird-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/202307201141.PYWS6ird-lkp@intel.com/
>
> All warnings (new ones prefixed by >>):
>
>>> drivers/nvme/host/tcp.c:835:12: warning: stack frame size (2256) exceeds limit (2048) in 'nvme_tcp_recv_skb' [-Wframe-larger-than]
> 835 | static int nvme_tcp_recv_skb(read_descriptor_t *desc, struct sk_buff *skb,
> | ^
> 1 warning generated.
>
>
> vim +/nvme_tcp_recv_skb +835 drivers/nvme/host/tcp.c
>
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 834
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 @835 static int nvme_tcp_recv_skb(read_descriptor_t *desc, struct sk_buff *skb,
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 836 unsigned int offset, size_t len)
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 837 {
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 838 struct nvme_tcp_queue *queue = desc->arg.data;
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 839 size_t consumed = len;
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 840 int result;
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 841
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 842 while (len) {
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 843 switch (nvme_tcp_recv_state(queue)) {
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 844 case NVME_TCP_RECV_PDU:
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 845 result = nvme_tcp_recv_pdu(queue, skb, &offset, &len);
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 846 break;
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 847 case NVME_TCP_RECV_DATA:
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 848 result = nvme_tcp_recv_data(queue, skb, &offset, &len);
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 849 break;
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 850 case NVME_TCP_RECV_DDGST:
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 851 result = nvme_tcp_recv_ddgst(queue, skb, &offset, &len);
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 852 break;
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 853 default:
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 854 result = -EFAULT;
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 855 }
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 856 if (result) {
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 857 dev_err(queue->ctrl->ctrl.device,
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 858 "receive failed: %d\n", result);
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 859 queue->rd_enabled = false;
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 860 nvme_tcp_error_recovery(&queue->ctrl->ctrl);
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 861 return result;
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 862 }
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 863 }
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 864
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 865 return consumed;
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 866 }
> 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 867
>
> :::::: The code at line 835 was first introduced by commit
> :::::: 3f2304f8c6d6ed97849057bd16fee99e434ca796 nvme-tcp: add NVMe over TCP host driver
>
> :::::: TO: Sagi Grimberg <sagi@lightbitslabs.com>
> :::::: CC: Christoph Hellwig <hch@lst.de>
>
I don't understand how the stack frame size is that big. Looks like a
wrong complaint?
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: drivers/nvme/host/tcp.c:835:12: warning: stack frame size (2256) exceeds limit (2048) in 'nvme_tcp_recv_skb'
2023-07-24 7:46 ` Sagi Grimberg
@ 2023-07-24 17:07 ` Nick Desaulniers
0 siblings, 0 replies; 3+ messages in thread
From: Nick Desaulniers @ 2023-07-24 17:07 UTC (permalink / raw)
To: Sagi Grimberg
Cc: kernel test robot, Varun Prakash, llvm, oe-kbuild-all,
linux-kernel, Christoph Hellwig
On Mon, Jul 24, 2023 at 12:46 AM Sagi Grimberg <sagi@grimberg.me> wrote:
>
>
>
> On 7/20/23 06:10, kernel test robot wrote:
> > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> > head: bfa3037d828050896ae52f6467b6ca2489ae6fb1
> > commit: c2700d2886a87f83f31e0a301de1d2350b52c79b nvme-tcp: send H2CData PDUs based on MAXH2CDATA
> > date: 1 year, 5 months ago
> > config: riscv-randconfig-r042-20230720 (https://download.01.org/0day-ci/archive/20230720/202307201141.PYWS6ird-lkp@intel.com/config)
^ it's from a randconfig...the sanitizers tend to blow up stack usage.
> > compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
> > reproduce: (https://download.01.org/0day-ci/archive/20230720/202307201141.PYWS6ird-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/202307201141.PYWS6ird-lkp@intel.com/
> >
> > All warnings (new ones prefixed by >>):
> >
> >>> drivers/nvme/host/tcp.c:835:12: warning: stack frame size (2256) exceeds limit (2048) in 'nvme_tcp_recv_skb' [-Wframe-larger-than]
> > 835 | static int nvme_tcp_recv_skb(read_descriptor_t *desc, struct sk_buff *skb,
> > | ^
> > 1 warning generated.
> >
> >
> > vim +/nvme_tcp_recv_skb +835 drivers/nvme/host/tcp.c
> >
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 834
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 @835 static int nvme_tcp_recv_skb(read_descriptor_t *desc, struct sk_buff *skb,
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 836 unsigned int offset, size_t len)
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 837 {
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 838 struct nvme_tcp_queue *queue = desc->arg.data;
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 839 size_t consumed = len;
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 840 int result;
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 841
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 842 while (len) {
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 843 switch (nvme_tcp_recv_state(queue)) {
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 844 case NVME_TCP_RECV_PDU:
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 845 result = nvme_tcp_recv_pdu(queue, skb, &offset, &len);
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 846 break;
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 847 case NVME_TCP_RECV_DATA:
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 848 result = nvme_tcp_recv_data(queue, skb, &offset, &len);
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 849 break;
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 850 case NVME_TCP_RECV_DDGST:
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 851 result = nvme_tcp_recv_ddgst(queue, skb, &offset, &len);
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 852 break;
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 853 default:
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 854 result = -EFAULT;
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 855 }
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 856 if (result) {
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 857 dev_err(queue->ctrl->ctrl.device,
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 858 "receive failed: %d\n", result);
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 859 queue->rd_enabled = false;
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 860 nvme_tcp_error_recovery(&queue->ctrl->ctrl);
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 861 return result;
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 862 }
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 863 }
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 864
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 865 return consumed;
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 866 }
> > 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 867
> >
> > :::::: The code at line 835 was first introduced by commit
> > :::::: 3f2304f8c6d6ed97849057bd16fee99e434ca796 nvme-tcp: add NVMe over TCP host driver
> >
> > :::::: TO: Sagi Grimberg <sagi@lightbitslabs.com>
> > :::::: CC: Christoph Hellwig <hch@lst.de>
> >
>
> I don't understand how the stack frame size is that big. Looks like a
> wrong complaint?
>
--
Thanks,
~Nick Desaulniers
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2023-07-24 17:07 UTC | newest]
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2023-07-20 3:10 drivers/nvme/host/tcp.c:835:12: warning: stack frame size (2256) exceeds limit (2048) in 'nvme_tcp_recv_skb' kernel test robot
2023-07-24 7:46 ` Sagi Grimberg
2023-07-24 17:07 ` Nick Desaulniers
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