Subject: linux-image-4.9.0-6-amd64: q
Package: src:linux
Version: 4.9.82-1+deb9u3
Justification: renders package unusable
Severity: grave
Dear Maintainer,
* What led up to the situation?
This is an NFS server, who exports about 25 mountpoints to 30 NFS
clients. Ever since its reboot 10 days ago, the kernel kept reporting
"RPC request reserved 84 but used 272" and one or more client, while
still mounting from servers, become unusable, i.e. access to NFS directories
would get stuck and later even spawning a new shell become impossible and
can only be resolved by rebooting the client.
Once the client reboots, the server stops reporting "RPC request ...", then
the problem might re-appear in another random client two or three days later.
* What exactly did you do (or not do) that was effective (or
ineffective)?
I have tried restarting the `nfs-server`, `rpcbind` services, but that didn't
resolve the problem.
* What was the outcome of this action?
NFS client gets stuck.
* What outcome did you expect instead?
NFS client works normally.
-- Package-specific info:
** Version:
Linux version 4.9.0-6-amd64 (debian-ker...@lists.debian.org) (gcc version 6.3.0
20170516 (Debian 6.3.0-18+deb9u1) ) #1 SMP Debian 4.9.82-1+deb9u3 (2018-03-02)
** Command line:
BOOT_IMAGE=/boot/vmlinuz-4.9.0-6-amd64 root=/dev/mapper/lv-root ro
** Tainted: I (2048)
* Working around severe firmware bug.
** Kernel log:
[May 2 18:05] RPC request reserved 84 but used 272
[ +0.000705] RPC request reserved 84 but used 272
[ +0.000666] RPC request reserved 84 but used 272
[ +0.000597] RPC request reserved 84 but used 272
[ +0.000637] RPC request reserved 84 but used 272
[ +0.000785] RPC request reserved 84 but used 272
[ +0.000572] RPC request reserved 84 but used 272
[ +0.000650] RPC request reserved 84 but used 272
[ +0.001097] RPC request reserved 84 but used 272
[ +0.000678] RPC request reserved 84 but used 272
[ +0.001267] RPC request reserved 84 but used 272
[ +0.000890] RPC request reserved 84 but used 272
[ +0.000798] RPC request reserved 84 but used 272
[ +0.000615] RPC request reserved 84 but used 272
[ +0.000483] RPC request reserved 84 but used 272
[ +0.000686] RPC request reserved 84 but used 272
[ +0.000546] RPC request reserved 84 but used 272
[ +0.000565] RPC request reserved 84 but used 272
[ +0.000655] RPC request reserved 84 but used 272
[ +0.000505] RPC request reserved 84 but used 272
** Model information
sys_vendor: Dell Inc.
product_name: PowerEdge R610
product_version:
chassis_vendor: Dell Inc.
chassis_version:
bios_vendor: Dell Inc.
bios_version: 6.4.0
board_vendor: Dell Inc.
board_name: 0F0XJ6
board_version: A06
** Loaded modules:
binfmt_misc
sctp_diag
sctp
libcrc32c
dccp_diag
dccp
tcp_diag
udp_diag
inet_diag
unix_diag
nfnetlink_queue
nfnetlink_log
bluetooth
rfkill
rpcsec_gss_krb5
iptable_filter
nft_reject_inet
nf_reject_ipv4
nf_reject_ipv6
nft_reject
nf_conntrack_ipv6
nf_defrag_ipv6
nf_conntrack_ipv4
nf_defrag_ipv4
nft_ct
nf_conntrack
nft_meta
nft_set_hash
nft_set_rbtree
nf_tables_inet
nf_tables_ipv6
nf_tables_ipv4
nf_tables
nfnetlink
hid_generic
usbhid
hid
quota_v2
quota_tree
dm_service_time
ipmi_devintf
intel_powerclamp
coretemp
kvm_intel
kvm
irqbypass
crct10dif_pclmul
mgag200
crc32_pclmul
ttm
drm_kms_helper
ipmi_si
iTCO_wdt
iTCO_vendor_support
drm
acpi_power_meter
ghash_clmulni_intel
intel_cstate
intel_uncore
ipmi_msghandler
evdev
shpchp
dcdbas
i2c_algo_bit
i7core_edac
sg
serio_raw
pcspkr
lpc_ich
mfd_core
wmi
edac_core
button
acpi_cpufreq
dm_multipath
scsi_dh_rdac
scsi_dh_emc
scsi_dh_alua
nfsd
auth_rpcgss
oid_registry
nfs_acl
lockd
grace
sunrpc
ib_iser
rdma_cm
iw_cm
ib_cm
ib_core
configfs
iscsi_tcp
libiscsi_tcp
libiscsi
scsi_transport_iscsi
ip_tables
x_tables
autofs4
ext4
crc16
jbd2
crc32c_generic
fscrypto
ecb
mbcache
dm_mod
sd_mod
sr_mod
cdrom
ata_generic
crc32c_intel
aesni_intel
aes_x86_64
glue_helper
lrw
gf128mul
ablk_helper
cryptd
psmouse
mptsas
ata_piix
scsi_transport_sas
mptscsih
libata
uhci_hcd
ehci_pci
mptbase
ehci_hcd
ixgbe
scsi_mod
usbcore
dca
ptp
usb_common
pps_core
mdio
bnx2
** Network interface configuration:
source /etc/network/interfaces.d/*
auto lo
iface lo inet loopback
allow-hotplug eno1
iface eno1 inet dhcp
** Network status:
*** IP interfaces and addresses:
-- excluded --
*** Device statistics:
Inter-| Receive| Transmit
face |bytespackets errs drop fifo frame compressed multicast|bytes
packets errs drop fifo colls carrier compressed
eno3: 299241964836 5887984490 4403670 0 0454181
1599547698991 1236673170000 0 0 0
eno2: 1247105888 127137360 10737820 0 0 3407914
1222939828 2279530000 0 0 0
eno4: 0 0000 0 0 00
0000 0 0 0
enp4s0f0: 803080979943
