net: ps3_gelic_net: handle skb allocation failures - wireguard-linux

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author	Florian Fuchs <fuchsfl@gmail.com>	2025-11-13 19:10:00 +0100
committer	Paolo Abeni <pabeni@redhat.com>	2025-11-18 12:31:09 +0100
commit	0f08f0b0fb5e674b48f30e86c103760204a1d3f3 (patch)
tree	7b1b9cd37579426f59a8cfee76d5a9fd5764b81e /scripts/kconfig/tests/choice/git:
parent	net: qlogic/qede: fix potential out-of-bounds read in qede_tpa_cont() and qede_tpa_end() (diff)

net: ps3_gelic_net: handle skb allocation failuresHEAD stable davem/net

Handle skb allocation failures in RX path, to avoid NULL pointer dereference and RX stalls under memory pressure. If the refill fails with -ENOMEM, complete napi polling and wake up later to retry via timer. Also explicitly re-enable RX DMA after oom, so the dmac doesn't remain stopped in this situation. Previously, memory pressure could lead to skb allocation failures and subsequent Oops like: Oops: Kernel access of bad area, sig: 11 [#2] Hardware name: SonyPS3 Cell Broadband Engine 0x701000 PS3 NIP [c0003d0000065900] gelic_net_poll+0x6c/0x2d0 [ps3_gelic] (unreliable) LR [c0003d00000659c4] gelic_net_poll+0x130/0x2d0 [ps3_gelic] Call Trace: gelic_net_poll+0x130/0x2d0 [ps3_gelic] (unreliable) __napi_poll+0x44/0x168 net_rx_action+0x178/0x290 Steps to reproduce the issue: 1. Start a continuous network traffic, like scp of a 20GB file 2. Inject failslab errors using the kernel fault injection: echo -1 > /sys/kernel/debug/failslab/times echo 30 > /sys/kernel/debug/failslab/interval echo 100 > /sys/kernel/debug/failslab/probability 3. After some time, traces start to appear, kernel Oopses and the system stops Step 2 is not always necessary, as it is usually already triggered by the transfer of a big enough file. Fixes: 02c1889166b4 ("ps3: gigabit ethernet driver for PS3, take3") Signed-off-by: Florian Fuchs <fuchsfl@gmail.com> Link: https://patch.msgid.link/20251113181000.3914980-1-fuchsfl@gmail.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>

Diffstat (limited to 'scripts/kconfig/tests/choice/git:')

0 files changed, 0 insertions, 0 deletions

/* SPDX-License-Identifier: GPL-2.0 */ /****************************************************************************** * * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved. * ******************************************************************************/ #ifndef __RTW_EEPROM_H__ #define __RTW_EEPROM_H__ #define RTL8712_EEPROM_ID 0x8712 /* define EEPROM_MAX_SIZE 256 */ #define HWSET_MAX_SIZE_128 128 #define HWSET_MAX_SIZE_256 256 #define HWSET_MAX_SIZE_512 512 #define EEPROM_MAX_SIZE HWSET_MAX_SIZE_512 #define CLOCK_RATE 50 /* 100us */ /* EEPROM opcodes */ #define EEPROM_READ_OPCODE 06 #define EEPROM_WRITE_OPCODE 05 #define EEPROM_ERASE_OPCODE 07 #define EEPROM_EWEN_OPCODE 19 /* Erase/write enable */ #define EEPROM_EWDS_OPCODE 16 /* Erase/write disable */ /* Country codes */ #define USA 0x555320 #define EUROPE 0x1 /* temp, should be provided later */ #define JAPAN 0x2 /* temp, should be provided later */ #define eeprom_cis0_sz 17 #define eeprom_cis1_sz 50 /* */ /* Customer ID, note that: */ /* This variable is initiailzed through EEPROM or registry, */ /* however, its definition may be different with that in EEPROM for */ /* EEPROM size consideration. So, we have to perform proper translation between them. */ /* Besides, CustomerID of registry has precedence of that of EEPROM. */ /* defined below. 060703, by rcnjko. */ /* */ typedef enum _RT_CUSTOMER_ID { RT_CID_DEFAULT = 0, RT_CID_8187_ALPHA0 = 1, RT_CID_8187_SERCOMM_PS = 2, RT_CID_8187_HW_LED = 3, RT_CID_8187_NETGEAR = 4, RT_CID_WHQL = 5, RT_CID_819x_CAMEO = 6, RT_CID_819x_RUNTOP = 7, RT_CID_819x_Senao = 8, RT_CID_TOSHIBA = 9, /* Merge by Jacken, 2008/01/31. */ RT_CID_819x_Netcore = 10, RT_CID_Nettronix = 11, RT_CID_DLINK = 12, RT_CID_PRONET = 13, RT_CID_COREGA = 14, RT_CID_CHINA_MOBILE = 15, RT_CID_819x_ALPHA = 16, RT_CID_819x_Sitecom = 17, RT_CID_CCX = 18, /* It's set under CCX logo test and isn't demanded for CCX functions, but for test behavior like retry limit and tx report. By Bruce, 2009-02-17. */ RT_CID_819x_Lenovo = 19, RT_CID_819x_QMI = 20, RT_CID_819x_Edimax_Belkin = 21, RT_CID_819x_Sercomm_Belkin = 22, RT_CID_819x_CAMEO1 = 23, RT_CID_819x_MSI = 24, RT_CID_819x_Acer = 25, RT_CID_819x_AzWave_ASUS = 26, RT_CID_819x_AzWave = 27, /* For AzWave in PCIe, The ID is AzWave use and not only Asus */ RT_CID_819x_HP = 28, RT_CID_819x_WNC_COREGA = 29, RT_CID_819x_Arcadyan_Belkin = 30, RT_CID_819x_SAMSUNG = 31, RT_CID_819x_CLEVO = 32, RT_CID_819x_DELL = 33, RT_CID_819x_PRONETS = 34, RT_CID_819x_Edimax_ASUS = 35, RT_CID_NETGEAR = 36, RT_CID_PLANEX = 37, RT_CID_CC_C = 38, RT_CID_819x_Xavi = 39, RT_CID_LENOVO_CHINA = 40, RT_CID_INTEL_CHINA = 41, RT_CID_TPLINK_HPWR = 42, RT_CID_819x_Sercomm_Netgear = 43, RT_CID_819x_ALPHA_Dlink = 44,/* add by ylb 20121012 for customer led for alpha */ RT_CID_WNC_NEC = 45,/* add by page for NEC */ RT_CID_DNI_BUFFALO = 46,/* add by page for NEC */ }RT_CUSTOMER_ID, *PRT_CUSTOMER_ID; struct eeprom_priv { u8 bautoload_fail_flag; u8 bloadfile_fail_flag; u8 bloadmac_fail_flag; u8 EepromOrEfuse; u8 mac_addr[6]; /* PermanentAddress */ u16 channel_plan; u16 CustomerID; u8 efuse_eeprom_data[EEPROM_MAX_SIZE]; /* 92C:256bytes, 88E:512bytes, we use union set (512bytes) */ u8 adjuseVoltageVal; u8 EEPROMRFGainOffset; u8 EEPROMRFGainVal; u8 sdio_setting; u32 ocr; u8 cis0[eeprom_cis0_sz]; u8 cis1[eeprom_cis1_sz]; }; #endif /* __RTL871X_EEPROM_H__ */


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