From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Dinghao Liu <dinghao.liu@zju.edu.cn>,
Leon Romanovsky <leonro@nvidia.com>,
Saeed Mahameed <saeedm@nvidia.com>
Subject: [PATCH 4.14 24/28] net/mlx5e: Fix two double free cases
Date: Fri, 15 Jan 2021 13:28:01 +0100 [thread overview]
Message-ID: <20210115121957.959826861@linuxfoundation.org> (raw)
In-Reply-To: <20210115121956.731354372@linuxfoundation.org>
From: Dinghao Liu <dinghao.liu@zju.edu.cn>
commit 7a6eb072a9548492ead086f3e820e9aac71c7138 upstream.
mlx5e_create_ttc_table_groups() frees ft->g on failure of
kvzalloc(), but such failure will be caught by its caller
in mlx5e_create_ttc_table() and ft->g will be freed again
in mlx5e_destroy_flow_table(). The same issue also occurs
in mlx5e_create_ttc_table_groups(). Set ft->g to NULL after
kfree() to avoid double free.
Fixes: 7b3722fa9ef6 ("net/mlx5e: Support RSS for GRE tunneled packets")
Fixes: 33cfaaa8f36f ("net/mlx5e: Split the main flow steering table")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/mellanox/mlx5/core/en_fs.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c
@@ -961,6 +961,7 @@ static int mlx5e_create_inner_ttc_table_
in = kvzalloc(inlen, GFP_KERNEL);
if (!in) {
kfree(ft->g);
+ ft->g = NULL;
return -ENOMEM;
}
@@ -1181,6 +1182,7 @@ static int mlx5e_create_l2_table_groups(
in = kvzalloc(inlen, GFP_KERNEL);
if (!in) {
kfree(ft->g);
+ ft->g = NULL;
return -ENOMEM;
}
next prev parent reply other threads:[~2021-01-15 13:03 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-15 12:27 [PATCH 4.14 00/28] 4.14.216-rc1 review Greg Kroah-Hartman
2021-01-15 12:27 ` [PATCH 4.14 01/28] powerpc: Fix incorrect stw{, ux, u, x} instructions in __set_pte_at Greg Kroah-Hartman
2021-01-15 12:27 ` [PATCH 4.14 02/28] net: cdc_ncm: correct overhead in delayed_ndp_size Greg Kroah-Hartman
2021-01-15 12:27 ` [PATCH 4.14 03/28] net: vlan: avoid leaks on register_vlan_dev() failures Greg Kroah-Hartman
2021-01-15 12:27 ` [PATCH 4.14 04/28] net: ip: always refragment ip defragmented packets Greg Kroah-Hartman
2021-01-15 12:27 ` [PATCH 4.14 05/28] net: fix pmtu check in nopmtudisc mode Greg Kroah-Hartman
2021-01-15 12:27 ` [PATCH 4.14 06/28] x86/resctrl: Use an IPI instead of task_work_add() to update PQR_ASSOC MSR Greg Kroah-Hartman
2021-01-15 12:27 ` [PATCH 4.14 07/28] x86/resctrl: Dont move a task to the same resource group Greg Kroah-Hartman
2021-01-15 12:27 ` [PATCH 4.14 08/28] vmlinux.lds.h: Add PGO and AutoFDO input sections Greg Kroah-Hartman
2021-01-15 12:27 ` [PATCH 4.14 09/28] drm/i915: Fix mismatch between misplaced vma check and vma insert Greg Kroah-Hartman
2021-01-15 12:27 ` [PATCH 4.14 10/28] ubifs: wbuf: Dont leak kernel memory to flash Greg Kroah-Hartman
2021-01-15 12:27 ` [PATCH 4.14 11/28] spi: pxa2xx: Fix use-after-free on unbind Greg Kroah-Hartman
2021-01-15 12:27 ` [PATCH 4.14 12/28] iio: imu: st_lsm6dsx: flip irq return logic Greg Kroah-Hartman
2021-01-15 12:27 ` [PATCH 4.14 13/28] iio: imu: st_lsm6dsx: fix edge-trigger interrupts Greg Kroah-Hartman
2021-01-15 12:27 ` [PATCH 4.14 14/28] ARM: OMAP2+: omap_device: fix idling of devices during probe Greg Kroah-Hartman
2021-01-15 12:27 ` [PATCH 4.14 15/28] i2c: sprd: use a specific timeout to avoid system hang up issue Greg Kroah-Hartman
2021-01-15 12:27 ` [PATCH 4.14 16/28] cpufreq: powernow-k8: pass policy rather than use cpufreq_cpu_get() Greg Kroah-Hartman
2021-01-15 12:27 ` [PATCH 4.14 17/28] spi: stm32: FIFO threshold level - fix align packet size Greg Kroah-Hartman
2021-01-15 12:27 ` [PATCH 4.14 18/28] dmaengine: xilinx_dma: check dma_async_device_register return value Greg Kroah-Hartman
2021-01-15 12:27 ` [PATCH 4.14 19/28] dmaengine: xilinx_dma: fix mixed_enum_type coverity warning Greg Kroah-Hartman
2021-01-15 12:27 ` [PATCH 4.14 20/28] wil6210: select CONFIG_CRC32 Greg Kroah-Hartman
2021-01-15 12:27 ` [PATCH 4.14 21/28] block: rsxx: " Greg Kroah-Hartman
2021-01-15 12:27 ` [PATCH 4.14 22/28] iommu/intel: Fix memleak in intel_irq_remapping_alloc Greg Kroah-Hartman
2021-01-15 12:28 ` [PATCH 4.14 23/28] net/mlx5e: Fix memleak in mlx5e_create_l2_table_groups Greg Kroah-Hartman
2021-01-15 12:28 ` Greg Kroah-Hartman [this message]
2021-01-15 12:28 ` [PATCH 4.14 25/28] wan: ds26522: select CONFIG_BITREVERSE Greg Kroah-Hartman
2021-01-15 12:28 ` [PATCH 4.14 26/28] KVM: arm64: Dont access PMCR_EL0 when no PMU is available Greg Kroah-Hartman
2021-01-15 12:28 ` [PATCH 4.14 27/28] block: fix use-after-free in disk_part_iter_next Greg Kroah-Hartman
2021-01-15 12:28 ` [PATCH 4.14 28/28] net: drop bogus skb with CHECKSUM_PARTIAL and offset beyond end of trimmed packet Greg Kroah-Hartman
2021-01-15 21:17 ` [PATCH 4.14 00/28] 4.14.216-rc1 review Guenter Roeck
2021-01-16 6:38 ` Naresh Kamboju
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