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* [Bug 943] BUG: scheduling while atomic
@ 2022-03-01  8:44 bugzilla
  2022-03-01 16:55 ` Stephen Hemminger
  2023-12-15  3:55 ` bugzilla
  0 siblings, 2 replies; 3+ messages in thread
From: bugzilla @ 2022-03-01  8:44 UTC (permalink / raw)
  To: dev

https://bugs.dpdk.org/show_bug.cgi?id=943

            Bug ID: 943
           Summary: BUG: scheduling while atomic
           Product: DPDK
           Version: 21.11
          Hardware: All
                OS: Linux
            Status: UNCONFIRMED
          Severity: critical
          Priority: Normal
         Component: examples
          Assignee: dev@dpdk.org
          Reporter: yun.zhou@windriver.com
  Target Milestone: ---

Hi all, 

There is a "scheduling while atomic" bug when enslave a macvlan of kni
interface to a bond master. This issue can be reproduced on dpdk from
528057df4c4fb5(kni: support promiscuous mode set).

> The kernel message is like this.

[  697.574325] igb 0000:03:00.0: removed PHC on ens8f0
[  697.738976] igb_uio 0000:03:00.0: mapping 1K dma=0x40a98a000
host=000000000d71c45b
[  697.738981] igb_uio 0000:03:00.0: unmapping 1K dma=0x40a98a000
host=000000000d71c45b
[ 1200.157918] igb_uio 0000:03:00.0: uio device registered with irq 127
[ 1235.846792] igb_uio 0000:03:00.0: uio device registered with irq 127
[ 1236.441082] rte_kni: Creating kni...
[ 1236.463488] IPv6: ADDRCONF(NETDEV_UP): vEth0_0: link is not ready
[ 1238.272115] IPv6: ADDRCONF(NETDEV_UP): vEth0_0: link is not ready
[ 1271.311470] rte_kni: Successfully release kni named vEth0_0
[ 1273.749487] igb_uio 0000:03:00.0: uio device registered with irq 127
[ 1274.345550] rte_kni: Creating kni...
[ 1274.367822] IPv6: ADDRCONF(NETDEV_UP): vEth0_0: link is not ready
[ 1276.275826] IPv6: ADDRCONF(NETDEV_UP): vEth0_0: link is not ready
[ 1396.811992] Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)
[ 1426.711326] bonding: remux0 is being created...
[ 1459.463366] device vEth0_0 entered promiscuous mode
[ 1459.463368] BUG: scheduling while atomic: bash/3560/0x00000200
[ 1459.463369] Modules linked in: bonding macvlan rte_kni(OE) iptable_filter
igb_uio(OE) uio vmnet(OE) vmw_vsock_vmci_transport vsock vmw_vmci vmmon(OE)
dell_rbu dcdbas nls_iso8859_1 intel_rapl x86_pkg_temp_thermal intel_powerclamp
coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul
ghash_clmulni_intel snd_hda_codec_hdmi pcbc hp_wmi sparse_keymap aesni_intel
aes_x86_64 snd_hda_codec_realtek wmi_bmof snd_hda_codec_generic crypto_simd
snd_hda_intel snd_hda_codec glue_helper cryptd serio_raw intel_cstate
intel_rapl_perf joydev input_leds snd_hda_core snd_hwdep snd_pcm snd_seq_midi
snd_seq_midi_event snd_rawmidi mei_me mei snd_seq snd_seq_device snd_timer wmi
acpi_pad i915 snd drm_kms_helper drm fb_sys_fops syscopyarea sysfillrect
sysimgblt intel_pch_thermal video soundcore shpchp mac_hid sch_fq_codel
[ 1459.463389]  nfsd auth_rpcgss parport_pc ppdev nfs_acl lockd lp parport
grace sunrpc ip_tables x_tables autofs4 psmouse e1000e igb i2c_algo_bit dca ptp
ahci pps_core libahci hid_generic usbhid hid
[ 1459.463396] CPU: 2 PID: 3560 Comm: bash Tainted: G           OE   
4.15.0-167-generic #175-Ubuntu
[ 1459.463397] Hardware name: HP HP EliteDesk 800 G2 SFF/8054, BIOS N01 Ver.
02.15 06/02/2016
[ 1459.463397] Call Trace:
[ 1459.463403]  dump_stack+0x6d/0x8b
[ 1459.463405]  __schedule_bug+0x55/0x70
[ 1459.463407]  __schedule+0x658/0x890
[ 1459.463408]  ? log_store+0x226/0x270
[ 1459.463409]  schedule+0x2c/0x80
[ 1459.463410]  schedule_timeout+0x15d/0x370 ====> in
wait_event_interruptible_timeout
[ 1459.463412]  ? __next_timer_interrupt+0xe0/0xe0
[ 1459.463415]  kni_net_process_request+0x277/0x300 [rte_kni]
[ 1459.463416]  ? wait_woken+0x80/0x80
[ 1459.463418]  kni_net_change_rx_flags+0x6b/0x90 [rte_kni]
[ 1459.463420]  __dev_set_promiscuity+0x121/0x1d0
[ 1459.463421]  __dev_set_rx_mode+0x83/0x90
[ 1459.463423]  dev_uc_add+0x56/0x70 ====> enter atomic context by calling
netif_addr_lock_bh()
[ 1459.463424]  macvlan_open+0x15e/0x1d0 [macvlan]
[ 1459.463426]  __dev_open+0xd3/0x160
[ 1459.463427]  dev_open+0x4e/0x90
[ 1459.463431]  bond_enslave+0x62a/0x1530 [bonding]
[ 1459.463433]  ? vsscanf+0x805/0x8d0
[ 1459.463434]  ? sscanf+0x49/0x70
[ 1459.463438]  bond_option_slaves_set+0xd0/0x1a0 [bonding]
[ 1459.463441]  __bond_opt_set+0x101/0x3a0 [bonding]
[ 1459.463444]  __bond_opt_set_notify+0x2c/0x80 [bonding]
[ 1459.463447]  bond_opt_tryset_rtnl+0x56/0xa0 [bonding]
[ 1459.463450]  bonding_sysfs_store_option+0x35/0x60 [bonding]
[ 1459.463452]  dev_attr_store+0x1b/0x30
[ 1459.463453]  sysfs_kf_write+0x3c/0x50
[ 1459.463454]  kernfs_fop_write+0x125/0x1a0
[ 1459.463456]  __vfs_write+0x1b/0x40
[ 1459.463456]  vfs_write+0xb1/0x1a0
[ 1459.463457]  SyS_write+0x5c/0xe0
[ 1459.463459]  do_syscall_64+0x73/0x130 ====> write
/sys/class/net/remux0/bonding/slaves to enslave eth5
[ 1459.463460]  entry_SYSCALL_64_after_hwframe+0x41/0xa6
[ 1459.463461] RIP: 0033:0x7fdda9a41224
[ 1459.463462] RSP: 002b:00007ffe02de1b68 EFLAGS: 00000246 ORIG_RAX:
0000000000000001
[ 1459.463463] RAX: ffffffffffffffda RBX: 0000000000000006 RCX:
00007fdda9a41224
[ 1459.463463] RDX: 0000000000000006 RSI: 000055d2b3e046f0 RDI:
0000000000000001
[ 1459.463464] RBP: 000055d2b3e046f0 R08: 000000000000000a R09:
0000000000000005
[ 1459.463465] R10: 000000000000000a R11: 0000000000000246 R12:
00007fdda9d1d760
[ 1459.463465] R13: 0000000000000006 R14: 00007fdda9d192a0 R15:
00007fdda9d18760
[ 1459.463705] remux0: Enslaving eth5 as an active interface with an up link

> Reproduction Steps

# modprobe uio
# insmod dpdk-kmods/linux/igb_uio/igb_uio.ko
# insmod build/kernel/linux/kni/rte_kni.ko

# ifconfig ens8f0 down
# ./usertools/dpdk-devbind.py -b igb_uio ens8f0

# ./build/examples/dpdk-kni ./${version}/kni -c 0xf -- -p 0x1 -P
--config="(0,0,1,2)" &
[1] 12356
root@pek-yzhou-d2:/home/wrsadmin/work/dpdk# EAL: Detected CPU lcores: 4
EAL: Detected NUMA nodes: 1
EAL: Detected static linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: Probe PCI driver: net_e1000_igb (8086:10c9) device: 0000:03:00.0 (socket
0)
TELEMETRY: No legacy callbacks, legacy socket not created
APP: Initialising port 0 ...

Checking link status
...............done
Port 0 Link up at 100 Mbps FDX Autoneg
APP: ========================
APP: KNI Running
APP: kill -SIGUSR1 12356
APP:     Show KNI Statistics.
APP: kill -SIGUSR2 12356
APP:     Zero KNI Statistics.
APP: ========================
APP: Lcore 1 is writing to port 0
APP: Lcore 2 has nothing to do
APP: Lcore 3 has nothing to do
APP: Lcore 0 is reading from port 0
APP: Configure network interface of 0 up

# ip li add link vEth0_0 eth5 address 00:11:22:33:44:55 type macvlan mode
private
# ip li add link vEth0_0 eth6 address 00:11:22:33:44:56 type macvlan mode
private
# modprobe bonding
# echo +remux0 > /sys/class/net/bonding_masters
# echo +eth5 > /sys/class/net/remux0/bonding/slaves

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2022-03-01  8:44 [Bug 943] BUG: scheduling while atomic bugzilla
2022-03-01 16:55 ` Stephen Hemminger
2023-12-15  3:55 ` bugzilla

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