[PATCH net v2 0/2] octeontx2: fix bitmap leaks in PF and VF

[PATCH net v2 0/2] octeontx2: fix bitmap leaks in PF and VF

[Bo Sun]

Two small patches that free the AF_XDP bitmap in the PF and VF
remove paths.  Both carry the same Fixes tag and should go to
stable.

Changes in v2:
- Add correct [PATCH net v2] subject prefix
- CC the sign-off authors that introduced the leak and everyone
  returned by scripts/get_maintainer.pl

Bo Sun (2):
  octeontx2-vf: fix bitmap leak
  octeontx2-pf: fix bitmap leak

 drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c | 1 +
 drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c | 1 +
 2 files changed, 2 insertions(+)

-- 
2.50.1 (Apple Git-155)

[PATCH net v2 1/2] octeontx2-vf: fix bitmap leak

[Bo Sun]

The bitmap allocated with bitmap_zalloc() in otx2vf_probe() was not
released in otx2vf_remove(). Unbinding and rebinding the driver therefore
triggers a kmemleak warning:

    unreferenced object (size 8):
      backtrace:
        bitmap_zalloc
        otx2vf_probe

Call bitmap_free() in the remove path to fix the leak.

Fixes: efabce290151 ("octeontx2-pf: AF_XDP zero copy receive support")
Cc: stable@vger.kernel.org

Signed-off-by: Bo Sun <bo@mboxify.com>
---
 drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
index 7ebb6e656884..25381f079b97 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
@@ -854,6 +854,7 @@ static void otx2vf_remove(struct pci_dev *pdev)
 		qmem_free(vf->dev, vf->dync_lmt);
 	otx2vf_vfaf_mbox_destroy(vf);
 	pci_free_irq_vectors(vf->pdev);
+	bitmap_free(vf->af_xdp_zc_qidx);
 	pci_set_drvdata(pdev, NULL);
 	free_netdev(netdev);
 }
-- 
2.50.1 (Apple Git-155)

[PATCH net v2 2/2] octeontx2-pf: fix bitmap leak

[Bo Sun]

The bitmap allocated with bitmap_zalloc() in otx2_probe() was not
released in otx2_remove(). Unbinding and rebinding the driver therefore
triggers a kmemleak warning:

    unreferenced object (size 8):
      backtrace:
        bitmap_zalloc
        otx2_probe

Call bitmap_free() in the remove path to fix the leak.

Fixes: efabce290151 ("octeontx2-pf: AF_XDP zero copy receive support")
Cc: stable@vger.kernel.org

Signed-off-by: Bo Sun <bo@mboxify.com>
---
 drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
index 5027fae0aa77..e808995703cf 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
@@ -3542,6 +3542,7 @@ static void otx2_remove(struct pci_dev *pdev)
 	otx2_disable_mbox_intr(pf);
 	otx2_pfaf_mbox_destroy(pf);
 	pci_free_irq_vectors(pf->pdev);
+	bitmap_free(pf->af_xdp_zc_qidx);
 	pci_set_drvdata(pdev, NULL);
 	free_netdev(netdev);
 }
-- 
2.50.1 (Apple Git-155)

Re: [PATCH net v2 0/2] octeontx2: fix bitmap leaks in PF and VF

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@kernel.org>:

On Tue, 30 Sep 2025 14:12:34 +0800 you wrote:
> Two small patches that free the AF_XDP bitmap in the PF and VF
> remove paths.  Both carry the same Fixes tag and should go to
> stable.
> 
> Changes in v2:
> - Add correct [PATCH net v2] subject prefix
> - CC the sign-off authors that introduced the leak and everyone
>   returned by scripts/get_maintainer.pl
> 
> [...]

Here is the summary with links:
  - [net,v2,1/2] octeontx2-vf: fix bitmap leak
    https://git.kernel.org/netdev/net/c/cd9ea7da41a4
  - [net,v2,2/2] octeontx2-pf: fix bitmap leak
    https://git.kernel.org/netdev/net/c/92e9f4faffca

You are awesome, thank you!
-- 
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