Jiangfeng Xiao 1a2c070ae8 net: hisilicon: make hip04_tx_reclaim non-reentrant ... If hip04_tx_reclaim is interrupted while it is running and then __napi_schedule continues to execute hip04_rx_poll->hip04_tx_reclaim, reentrancy occurs and oops is generated. So you need to mask the interrupt during the hip04_tx_reclaim run. The kernel oops exception stack is as follows: Unable to handle kernel NULL pointer dereference at virtual address 00000050 pgd = c0003000 [00000050] *pgd=80000000a04003, *pmd=00000000 Internal error: Oops: 206 [#1] SMP ARM Modules linked in: hip04_eth mtdblock mtd_blkdevs mtd ohci_platform ehci_platform ohci_hcd ehci_hcd vfat fat sd_mod usb_storage scsi_mod usbcore usb_common CPU: 0 PID: 0 Comm: swapper/0 Tainted: G O 4.4.185 #1 Hardware name: Hisilicon A15 task: c0a250e0 task.stack: c0a00000 PC is at hip04_tx_reclaim+0xe0/0x17c [hip04_eth] LR is at hip04_tx_reclaim+0x30/0x17c [hip04_eth] pc : [<bf30c3a4>] lr : [<bf30c2f4>] psr: 600e0313 sp : c0a01d88 ip : 00000000 fp : c0601f9c r10: 00000000 r9 : c3482380 r8 : 00000001 r7 : 00000000 r6 : 000000e1 r5 : c3482000 r4 : 0000000c r3 : f2209800 r2 : 00000000 r1 : 00000000 r0 : 00000000 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel Control: 32c5387d Table: 03d28c80 DAC: 55555555 Process swapper/0 (pid: 0, stack limit = 0xc0a00190) Stack: (0xc0a01d88 to 0xc0a02000) [<bf30c3a4>] (hip04_tx_reclaim [hip04_eth]) from [<bf30d2e0>] (hip04_rx_poll+0x88/0x368 [hip04_eth]) [<bf30d2e0>] (hip04_rx_poll [hip04_eth]) from [<c04c2d9c>] (net_rx_action+0x114/0x34c) [<c04c2d9c>] (net_rx_action) from [<c021eed8>] (__do_softirq+0x218/0x318) [<c021eed8>] (__do_softirq) from [<c021f284>] (irq_exit+0x88/0xac) [<c021f284>] (irq_exit) from [<c0240090>] (msa_irq_exit+0x11c/0x1d4) [<c0240090>] (msa_irq_exit) from [<c02677e0>] (__handle_domain_irq+0x110/0x148) [<c02677e0>] (__handle_domain_irq) from [<c0201588>] (gic_handle_irq+0xd4/0x118) [<c0201588>] (gic_handle_irq) from [<c0551700>] (__irq_svc+0x40/0x58) Exception stack(0xc0a01f30 to 0xc0a01f78) 1f20: c0ae8b40 00000000 00000000 00000000 1f40: 00000002 ffffe000 c0601f9c 00000000 ffffffff c0a2257c c0a22440 c0831a38 1f60: c0a01ec4 c0a01f80 c0203714 c0203718 600e0213 ffffffff [<c0551700>] (__irq_svc) from [<c0203718>] (arch_cpu_idle+0x20/0x3c) [<c0203718>] (arch_cpu_idle) from [<c025bfd8>] (cpu_startup_entry+0x244/0x29c) [<c025bfd8>] (cpu_startup_entry) from [<c054b0d8>] (rest_init+0xc8/0x10c) [<c054b0d8>] (rest_init) from [<c0800c58>] (start_kernel+0x468/0x514) Code: a40599e5 016086e2 018088e2 7660efe6 (503090e5) ---[ end trace 1db21d6d09c49d74 ]--- Kernel panic - not syncing: Fatal exception in interrupt CPU3: stopping CPU: 3 PID: 0 Comm: swapper/3 Tainted: G D O 4.4.185 #1 Signed-off-by: Jiangfeng Xiao <xiaojiangfeng@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2019-08-06 14:14:01 -07:00
..
3com	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
8390	net: 8390: Fix manufacturer name in Kconfig help text	2019-08-01 13:45:48 -04:00
adaptec	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
aeroflex	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
agere	net: ethernet: et131x: Use GFP_KERNEL instead of GFP_ATOMIC when allocating tx_ring->tcb_ring	2019-07-31 08:33:30 -07:00
alacritech	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 235	2019-06-19 17:09:07 +02:00
allwinner	net: ethernet: sun4i-emac: Support phy-handle property for finding PHYs	2019-08-06 11:29:16 -07:00
alteon	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
altera	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201	2019-05-30 11:29:52 -07:00
amazon	Revert "net: ena: ethtool: add extra properties retrieval via get_priv_flags"	2019-06-26 09:07:39 -07:00
amd	net: amd: Spelling s/case/cause/	2019-08-01 13:45:48 -04:00
apm	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13	2019-05-21 11:28:45 +02:00
apple	net: apple: Fix manufacturer name in Kconfig help text	2019-08-01 13:45:48 -04:00
aquantia	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2019-06-27 21:06:39 -07:00
arc	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
atheros	net: ag71xx: Use GFP_KERNEL instead of GFP_ATOMIC in 'ag71xx_rings_init()'	2019-07-31 08:38:36 -07:00
aurora	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157	2019-05-30 11:26:37 -07:00
broadcom	net: broadcom: Fix manufacturer name in Kconfig help text	2019-08-01 13:45:49 -04:00
brocade	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 292	2019-06-05 17:36:38 +02:00
cadence	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2019-07-08 19:48:57 -07:00
calxeda	net/ethernet: using dev_get_drvdata directly	2019-07-05 15:25:04 -07:00
cavium	net: thunderx: Use fwnode_get_mac_address()	2019-07-23 14:09:21 -07:00
chelsio	net: cxgb3_main: Fix a resource leak in a error path in 'init_one()'	2019-08-06 11:34:23 -07:00
cirrus	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
cisco	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
cortina
davicom	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157	2019-05-30 11:26:37 -07:00
dec	SPDX update for 5.2-rc3, round 1	2019-05-31 08:34:32 -07:00
dlink	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
emulex	be2net: disable bh with spin_lock in be_process_mcc	2019-08-06 11:47:19 -07:00
ezchip	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 291	2019-06-05 17:36:38 +02:00
faraday	Linux 5.2-rc4	2019-06-14 14:18:53 -06:00
freescale	enetc: Select PHYLIB while CONFIG_FSL_ENETC_VF is set	2019-08-02 18:15:02 -07:00
fujitsu	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
google	gve: Fix case where desc_cnt and data_cnt can get out of sync	2019-08-05 13:18:53 -07:00
hisilicon	net: hisilicon: make hip04_tx_reclaim non-reentrant	2019-08-06 14:14:01 -07:00
hp	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 86	2019-05-24 17:37:52 +02:00
huawei	hinic: add fw version query	2019-07-07 22:15:12 -07:00
i825xx	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
ibm	net: ehea: Mark expected switch fall-through	2019-07-29 11:11:51 -07:00
intel	igc: Prefer pcie_capability_read_word()	2019-07-21 13:29:47 -07:00
marvell	drivers/net/ethernet/marvell/mvmdio.c: Fix non OF case	2019-08-05 13:30:48 -07:00
mediatek	net: mediatek: Drop unneeded dependency on NET_VENDOR_MEDIATEK	2019-07-31 08:53:26 -07:00
mellanox	net/mlx5e: always initialize frag->last_in_page	2019-08-05 11:13:05 -07:00
micrel	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
microchip	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
moxa	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
mscc	ocelot: Cancel delayed work before wq destruction	2019-07-26 14:11:30 -07:00
myricom	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
natsemi	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13	2019-05-21 11:28:45 +02:00
neterion	ethernet: remove redundant memset	2019-07-15 11:06:27 -07:00
netronome	mlx5-fixes-2019-07-25	2019-07-26 14:26:41 -07:00
ni	net: nixge: Spelling s/Instrument/Instruments/	2019-08-01 13:45:49 -04:00
nuvoton	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441	2019-06-05 17:37:17 +02:00
nvidia	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13	2019-05-21 11:28:45 +02:00
nxp	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157	2019-05-30 11:26:37 -07:00
oki-semi	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 340	2019-06-05 17:37:07 +02:00
packetengines	net: packetengines: Fix manufacturer spelling and capitalization	2019-08-01 13:45:49 -04:00
pasemi	net: pasemi: fix an use-after-free in pasemi_mac_phy_init()	2019-07-08 16:33:02 -07:00
qlogic	net/ethernet/qlogic/qed: force the string buffer NULL-terminated	2019-08-02 17:57:18 -07:00
qualcomm	net: qualcomm: rmnet: Fix incorrect UL checksum offload logic	2019-07-26 14:20:06 -07:00
rdc	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1	2019-05-21 11:28:39 +02:00
realtek	r8169: don't use MSI before RTL8168d	2019-07-27 14:30:13 -07:00
renesas	net: sh_eth: fix mdio access in sh_eth_close() for R-Car Gen2 and RZ/A1 SoCs	2019-05-29 13:24:54 -07:00
rocker	rocker: fix memory leaks of fib_work on two error return paths	2019-07-29 10:58:06 -07:00
samsung	net: samsung: Spelling s/case/cause/	2019-08-01 13:45:49 -04:00
seeq	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
sfc	sfc: Remove 'PCIE error reporting unavailable'	2019-07-08 12:16:48 -07:00
sgi	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
silan	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
sis	sis900: correct a few typos	2019-07-14 12:22:11 -07:00
smsc	net: smc911x: Mark expected switch fall-through	2019-07-29 15:13:10 -07:00
socionext	net: netsec: remove static declaration for netsec_set_tx_de()	2019-07-09 14:46:40 -07:00
stmicro	net: stmmac: tc: Do not return a fragment entry	2019-08-06 12:26:11 -07:00
sun	net: ethernet: sun: remove redundant assignment to variable err	2019-07-04 12:12:13 -07:00
synopsys	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
tehuti	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
ti	net: ethernet: ti: cpsw: Add of_node_put() before return and break	2019-07-16 12:37:30 -07:00
toshiba	net: spider_net: Mark expected switch fall-through	2019-07-29 11:12:21 -07:00
tundra	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156	2019-05-30 11:26:35 -07:00
via	net: ipv4: provide __rcu annotation for ifa_list	2019-06-02 18:08:36 -07:00
wiznet	net: ethernet: wiznet: w5X00 add device tree support	2019-06-12 09:52:04 -07:00
xilinx	net: axienet: fix a potential double free in axienet_probe()	2019-07-08 16:28:32 -07:00
xircom	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
xscale	net: ixp4xx: Spelling s/XSacle/XScale/	2019-08-01 13:45:49 -04:00
dnet.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
dnet.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
ec_bhf.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282	2019-06-05 17:36:37 +02:00
ethoc.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
fealnx.c
jme.c	ethernet: remove redundant memset	2019-07-15 11:06:27 -07:00
jme.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 195	2019-05-30 11:29:22 -07:00
Kconfig	gve: Add basic driver framework for Compute Engine Virtual NIC	2019-07-01 19:36:35 -07:00
korina.c
lantiq_etop.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
lantiq_xrx200.c
Makefile	gve: Add basic driver framework for Compute Engine Virtual NIC	2019-07-01 19:36:35 -07:00
netx-eth.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00