AuxXxilium/linux_dsm_epyc7002
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9e6717af61
linux_dsm_epyc7002/drivers/net
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Zhongzhu Liu 9e6717af61 net: hns3: fix GFP flag error in hclge_mac_update_stats() 
When CONFIG_DEBUG_ATOMIC_SLEEP on, calling kzalloc with
GFP_KERNEL in hclge_mac_update_stats() will get below warning:

[   52.514677] BUG: sleeping function called from invalid context at mm/slab.h:501
[   52.522051] in_atomic(): 0, irqs_disabled(): 0, pid: 1015, name: ifconfig
[   52.528827] 2 locks held by ifconfig/1015:
[   52.532921]  #0: (____ptrval____) (&p->lock){....}, at: seq_read+0x54/0x748
[   52.539878]  #1: (____ptrval____) (rcu_read_lock){....}, at: dev_seq_start+0x0/0x140
[   52.547610] CPU: 16 PID: 1015 Comm: ifconfig Not tainted 5.3.0-rc3-00697-g20b80be #98
[   52.555408] Hardware name: Huawei TaiShan 2280 V2/BC82AMDC, BIOS 2280-V2 CS V3.B050.01 08/08/2019
[   52.564242] Call trace:
[   52.566687]  dump_backtrace+0x0/0x1f8
[   52.570338]  show_stack+0x14/0x20
[   52.573646]  dump_stack+0xb4/0xec
[   52.576950]  ___might_sleep+0x178/0x198
[   52.580773]  __might_sleep+0x74/0xe0
[   52.584338]  __kmalloc+0x244/0x2d8
[   52.587744]  hclge_mac_update_stats+0xc8/0x1f8 [hclge]
[   52.592870]  hclge_update_stats+0xe0/0x170 [hclge]
[   52.597651]  hns3_nic_get_stats64+0xa0/0x458 [hns3]
[   52.602514]  dev_get_stats+0x58/0x138
[   52.606165]  dev_seq_printf_stats+0x8c/0x280
[   52.610420]  dev_seq_show+0x14/0x40
[   52.613898]  seq_read+0x574/0x748
[   52.617205]  proc_reg_read+0xb4/0x108
[   52.620857]  __vfs_read+0x54/0xa8
[   52.624162]  vfs_read+0xa0/0x190
[   52.627380]  ksys_read+0xc8/0x178
[   52.630685]  __arm64_sys_read+0x40/0x50
[   52.634509]  el0_svc_common.constprop.0+0x120/0x1e0
[   52.639369]  el0_svc_handler+0x50/0x90
[   52.643106]  el0_svc+0x8/0xc

So this patch uses GFP_ATOMIC instead of GFP_KERNEL to fix it.

Fixes: d174ea75c9 ("net: hns3: add statistics for PFC frames and MAC control frames")
Signed-off-by: Zhongzhu Liu <liuzhongzhu@huawei.com>
Reviewed-by: Yunsheng Lin <linyunsheng@huawei.com>
Reviewed-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-08-09 13:44:32 -07:00
..
appletalk
arcnet arcnet: com20020-isa: Mark expected switch fall-throughs 2019-07-29 10:23:59 -07:00
bonding bonding: Force slave speed check after link state recovery for 802.3ad 2019-07-22 12:09:32 -07:00
caif caif-hsi: fix possible deadlock in cfhsi_exit_module() 2019-07-17 11:58:56 -07:00
can Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-08-06 18:44:57 -07:00
dsa Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-08-06 18:44:57 -07:00
ethernet net: hns3: fix GFP flag error in hclge_mac_update_stats() 2019-08-09 13:44:32 -07:00
fddi The main MIPS changes for a pretty light v5.3 cycle, including: 2019-07-17 09:42:03 -07:00
fjes
hamradio mkiss: Use refcount_t for refcount 2019-08-08 17:58:40 -07:00
hippi hippi: Remove call to memset after pci_alloc_consistent 2019-07-15 11:06:27 -07:00
hyperv net: Use skb_frag_off accessors 2019-07-30 14:21:32 -07:00
ieee802154
ipvlan
netdevsim drivers: net: use flow block API 2019-07-09 14:38:50 -07:00
phy Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-08-06 18:44:57 -07:00
plip
ppp compat_ioctl: pppoe: fix PPPOEIOCSFWD handling 2019-07-30 14:42:13 -07:00
slip net: delete "register" keyword 2019-08-08 18:03:42 -07:00
team Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-27 21:06:39 -07:00
usb Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-08-06 18:44:57 -07:00
vmxnet3 net: Use skb_frag_off accessors 2019-07-30 14:21:32 -07:00
wan net: wan: sdla: Mark expected switch fall-through 2019-07-29 13:57:58 -07:00
wimax
wireless Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-08-06 18:44:57 -07:00
xen-netback net: Use skb_frag_off accessors 2019-07-30 14:21:32 -07:00
dummy.c
eql.c
geneve.c
gtp.c gtp: add missing gtp_encap_disable_sock() in gtp_encap_enable() 2019-07-07 18:42:48 -07:00
ifb.c
Kconfig
LICENSE.SRC
loopback.c loopback: fix lockdep splat 2019-07-03 11:24:38 -07:00
macsec.c macsec: fix checksumming after decryption 2019-07-02 14:12:29 -07:00
macvlan.c
macvtap.c
Makefile
mdio.c
mii.c
net_failover.c
netconsole.c
nlmon.c
ntb_netdev.c
rionet.c
sb1000.c
Space.c
sungem_phy.c
tap.c coallocate socket_wq with socket itself 2019-07-08 19:25:19 -07:00
thunderbolt.c net: Use skb_frag_off accessors 2019-07-30 14:21:32 -07:00
tun.c tun: mark small packets as owned by the tap sock 2019-07-25 11:38:32 -07:00
veth.c veth: Support bulk XDP_TX 2019-06-25 14:26:54 +02:00
virtio_net.c
vrf.c vrf: make sure skb->data contains ip header to make routing 2019-07-21 13:32:51 -07:00
vsockmon.c
vxlan.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-07-08 19:48:57 -07:00
xen-netfront.c net: Use skb_frag_off accessors 2019-07-30 14:21:32 -07:00