| Message ID | 20210419112530.20395-1-vee.khee.wong@linux.intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [net-next,1/1] net: stmmac: fix memory leak during driver probe | expand |
Hello: This patch was applied to netdev/net-next.git (refs/heads/master): On Mon, 19 Apr 2021 19:25:30 +0800 you wrote: > On driver probe, kmemleak reported the following memory leak which was > due to allocated bitmap that was not being freed in stmmac_dvr_probe(). > > unreferenced object 0xffff9276014b13c0 (size 8): > comm "systemd-udevd", pid 2143, jiffies 4294681112 (age 116.720s) > hex dump (first 8 bytes): > 00 00 00 00 00 00 00 00 ........ > backtrace: > [<00000000c51e34b2>] stmmac_dvr_probe+0x1c0/0x440 [stmmac] > [<00000000b530eb41>] intel_eth_pci_probe.cold+0x2b/0x14e [dwmac_intel] > [<00000000b10f8929>] pci_device_probe+0xd2/0x150 > [<00000000fb254c74>] really_probe+0xf8/0x410 > [<0000000034128a59>] driver_probe_device+0x5d/0x150 > [<00000000016104d5>] device_driver_attach+0x53/0x60 > [<00000000cb18cd07>] __driver_attach+0x96/0x140 > [<00000000da9ffd5c>] bus_for_each_dev+0x7a/0xc0 > [<00000000af061a88>] bus_add_driver+0x184/0x1f0 > [<000000008be5c1c5>] driver_register+0x6c/0xc0 > [<0000000052b18a9e>] do_one_initcall+0x4d/0x210 > [<00000000154d4f07>] do_init_module+0x5c/0x230 > [<000000009b648d09>] load_module+0x2a5a/0x2d40 > [<000000000d86b76d>] __do_sys_finit_module+0xb5/0x120 > [<000000002b0cef95>] do_syscall_64+0x33/0x40 > [<0000000067b45bbb>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 > > [...] Here is the summary with links: - [net-next,1/1] net: stmmac: fix memory leak during driver probe https://git.kernel.org/netdev/net-next/c/d7f576dc9836 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 9f396648d76f..d1ca07c846e6 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -7035,6 +7035,7 @@ int stmmac_dvr_probe(struct device *device, error_hw_init: destroy_workqueue(priv->wq); stmmac_bus_clks_config(priv, false); + bitmap_free(priv->af_xdp_zc_qps); return ret; } @@ -7077,6 +7078,7 @@ int stmmac_dvr_remove(struct device *dev) stmmac_mdio_unregister(ndev); destroy_workqueue(priv->wq); mutex_destroy(&priv->lock); + bitmap_free(priv->af_xdp_zc_qps); return 0; }
On driver probe, kmemleak reported the following memory leak which was due to allocated bitmap that was not being freed in stmmac_dvr_probe(). unreferenced object 0xffff9276014b13c0 (size 8): comm "systemd-udevd", pid 2143, jiffies 4294681112 (age 116.720s) hex dump (first 8 bytes): 00 00 00 00 00 00 00 00 ........ backtrace: [<00000000c51e34b2>] stmmac_dvr_probe+0x1c0/0x440 [stmmac] [<00000000b530eb41>] intel_eth_pci_probe.cold+0x2b/0x14e [dwmac_intel] [<00000000b10f8929>] pci_device_probe+0xd2/0x150 [<00000000fb254c74>] really_probe+0xf8/0x410 [<0000000034128a59>] driver_probe_device+0x5d/0x150 [<00000000016104d5>] device_driver_attach+0x53/0x60 [<00000000cb18cd07>] __driver_attach+0x96/0x140 [<00000000da9ffd5c>] bus_for_each_dev+0x7a/0xc0 [<00000000af061a88>] bus_add_driver+0x184/0x1f0 [<000000008be5c1c5>] driver_register+0x6c/0xc0 [<0000000052b18a9e>] do_one_initcall+0x4d/0x210 [<00000000154d4f07>] do_init_module+0x5c/0x230 [<000000009b648d09>] load_module+0x2a5a/0x2d40 [<000000000d86b76d>] __do_sys_finit_module+0xb5/0x120 [<000000002b0cef95>] do_syscall_64+0x33/0x40 [<0000000067b45bbb>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 Fixes: bba2556efad6 ("net: stmmac: Enable RX via AF_XDP zero-copy") Cc: Ong Boon Leong <boon.leong.ong@intel.com> Signed-off-by: Wong Vee Khee <vee.khee.wong@linux.intel.com> --- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 ++ 1 file changed, 2 insertions(+)