Public bug reported:
I'm encountering many random kernel panic after enabling fsc with NFS.
Then I see a number of following err msgs right before it crashed.
Nov 20 12:04:26 g2 kernel: [170689.549374] FS-Cache:
Nov 20 12:04:26 g2 kernel: [170689.549381] FS-Cache: Assertion failed
Nov 20 12:04:26 g2 kernel: [170689.549384] FS-Cache: 6 == 5 is false
Nov 20 12:04:26 g2 kernel: [170689.549439] ------------[ cut here ]------------
Nov 20 12:04:26 g2 kernel: [170689.549490] kernel BUG at
/build/linux-3phnTq/linux-4.4.0/fs/fscache/operation.c:494!
Nov 20 12:04:26 g2 kernel: [170689.549557] invalid opcode: 0000 [#1] SMP
Nov 20 12:04:26 g2 kernel: [170689.549598] Modules linked in: veth xt_nat
xt_tcpudp ipt_MASQUERADE nf_nat_masquerade_ipv4 nf_conntrack_netlink nfnetlink
xfrm_user xfrm_algo iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
xt_addrtype iptable_filter ip_tables xt_conntrack x_tables nf_nat nf_conntrack
br_netfilter bridge stp llc aufs cachefiles ipmi_devintf rpcsec_gss_krb5
auth_rpcgss nfsv4 nfs lockd grace fscache snd_hda_codec_hdmi intel_rapl
x86_pkg_temp_thermal intel_powerclamp kvm_intel kvm ipmi_ssif irqbypass
serio_raw joydev input_leds snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep
snd_pcm nvidia_uvm(POE) sb_edac snd_seq_midi snd_seq_midi_event edac_core
snd_rawmidi snd_seq snd_seq_device snd_timer snd soundcore mei_me lpc_ich mei
shpchp wmi ipmi_si 8250_fintek ipmi_msghandler acpi_pad acpi_power_meter
mac_hid sunrpc ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr
iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nct6775 hwmon_vid coretemp
bonding parport_pc ppdev lp parport autofs4 xfs btrfs raid10 raid456
async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq
libcrc32c raid1 raid0 multipath linear nvidia_drm(POE) nvidia_modeset(POE)
hid_generic crct10dif_pclmul ast crc32_pclmul ghash_clmulni_intel aesni_intel
aes_x86_64 lrw gf128mul nvidia(POE) glue_helper ttm ablk_helper igb cryptd
drm_kms_helper psmouse syscopyarea dca sysfillrect ptp sysimgblt fb_sys_fops
pps_core ahci i2c_algo_bit drm libahci fjes usbhid hid
Nov 20 12:04:26 g2 kernel: [170689.550993] CPU: 22 PID: 6373 Comm:
kworker/u98:1 Tainted: P OE 4.4.0-98-generic #121-Ubuntu
Nov 20 12:04:26 g2 kernel: [170689.551071] Hardware name: ASUSTeK COMPUTER INC.
ESC8000 G3 Series/Z10PG-D24 Series, BIOS 3203 05/05/2016
Nov 20 12:04:26 g2 kernel: [170689.551160] Workqueue: fscache_operation
fscache_op_work_func [fscache]
Nov 20 12:04:26 g2 kernel: [170689.551219] task: ffff882027887000 ti:
ffff881429ea4000 task.ti: ffff881429ea4000
Nov 20 12:04:26 g2 kernel: [170689.551283] RIP: 0010:[<ffffffffc065df96>]
[<ffffffffc065df96>] fscache_put_operation+0x1d6/0x210 [fscache]
Nov 20 12:04:26 g2 kernel: [170689.551374] RSP: 0018:ffff881429ea7de0 EFLAGS:
00010282
Nov 20 12:04:26 g2 kernel: [170689.551421] RAX: 0000000000000019 RBX:
ffff882037224300 RCX: 0000000000000006
Nov 20 12:04:26 g2 kernel: [170689.551490] RDX: 0000000000000000 RSI:
0000000000000246 RDI: ffff88203f28dd50
Nov 20 12:04:26 g2 kernel: [170689.551551] RBP: ffff881429ea7df8 R08:
000000000000000a R09: 00000000000009c0
Nov 20 12:04:26 g2 kernel: [170689.551611] R10: ffff88120db1b300 R11:
00000000000009c0 R12: ffff882038bf8000
Nov 20 12:04:26 g2 kernel: [170689.551672] R13: ffff88202ff08800 R14:
0000000000000c40 R15: ffff882037224300
Nov 20 12:04:26 g2 kernel: [170689.551733] FS: 0000000000000000(0000)
GS:ffff88203f280000(0000) knlGS:0000000000000000
Nov 20 12:04:26 g2 kernel: [170689.551801] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
Nov 20 12:04:26 g2 kernel: [170689.551850] CR2: 00007f66b2887500 CR3:
0000000001e0a000 CR4: 00000000003406e0
Nov 20 12:04:26 g2 kernel: [170689.551912] DR0: 0000000000000000 DR1:
0000000000000000 DR2: 0000000000000000
Nov 20 12:04:26 g2 kernel: [170689.551972] DR3: 0000000000000000 DR6:
00000000fffe0ff0 DR7: 0000000000000400
Nov 20 12:04:26 g2 kernel: [170689.552030] Stack:
Nov 20 12:04:26 g2 kernel: [170689.552051] ffff882037224300 ffff882038bf8000
ffff88202ff08800 ffff881429ea7e10
Nov 20 12:04:26 g2 kernel: [170689.552124] ffffffffc065e1ca ffff88203439e780
ffff881429ea7e50 ffffffff8109a635
Nov 20 12:04:26 g2 kernel: [170689.552196] 0000000000000000 ffff88203439e7b0
ffff882038bf8000 0000000000000088
Nov 20 12:04:26 g2 kernel: [170689.552267] Call Trace:
Nov 20 12:04:26 g2 kernel: [170689.552299] [<ffffffffc065e1ca>]
fscache_op_work_func+0x2a/0x50 [fscache]
Nov 20 12:04:26 g2 kernel: [170689.552363] [<ffffffff8109a635>]
process_one_work+0x165/0x480
Nov 20 12:04:26 g2 kernel: [170689.552417] [<ffffffff8109a99b>]
worker_thread+0x4b/0x4c0
Nov 20 12:04:26 g2 kernel: [170689.552468] [<ffffffff8109a950>] ?
process_one_work+0x480/0x480
Nov 20 12:04:26 g2 kernel: [170689.552522] [<ffffffff810a0c75>]
kthread+0xe5/0x100
Nov 20 12:04:26 g2 kernel: [170689.552567] [<ffffffff810a0b90>] ?
kthread_create_on_node+0x1e0/0x1e0
Nov 20 12:04:26 g2 kernel: [170689.552626] [<ffffffff81844a4f>]
ret_from_fork+0x3f/0x70
Nov 20 12:04:26 g2 kernel: [170689.552674] [<ffffffff810a0b90>] ?
kthread_create_on_node+0x1e0/0x1e0
Nov 20 12:04:26 g2 kernel: [170689.552730] Code: c7 c7 fb 32 66 c0 e8 d1 02 b3
c0 48 c7 c7 09 33 66 c0 e8 c5 02 b3 c0 8b 73 40 ba 05 00 00 00 48 c7 c7 b0 1e
66 c0 e8 b1 02 b3 c0 <0f> 0b 48 c7 c7 fb 32 66 c0 e8 a3 02 b3 c0 48 c7 c7 09 33
66 c0
Nov 20 12:04:26 g2 kernel: [170689.553040] RIP [<ffffffffc065df96>]
fscache_put_operation+0x1d6/0x210 [fscache]
Nov 20 12:04:26 g2 kernel: [170689.553111] RSP <ffff881429ea7de0>
Nov 20 12:04:26 g2 kernel: [170689.571801] ---[ end trace 1e9e97557a315242 ]---
# uname -a
Linux g2 4.4.0-98-generic #121-Ubuntu SMP Tue Oct 10 14:24:03 UTC 2017 x86_64
x86_64 x86_64 GNU/Linux
# cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04.3 LTS"
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-98-generic 4.4.0-98.121
ProcVersionSignature: Ubuntu 4.4.0-98.121-generic 4.4.90
Uname: Linux 4.4.0-98-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.12
Architecture: amd64
Date: Mon Nov 20 19:06:29 2017
HibernationDevice: RESUME=/dev/mapper/umbocv_vg-swap_1
InstallationDate: Installed on 2017-06-14 (159 days ago)
InstallationMedia: Ubuntu-Server 16.04 LTS "Xenial Xerus" - Release amd64
(20160420.3)
MachineType: ASUSTeK COMPUTER INC. ESC8000 G3 Series
ProcEnviron:
LD_LIBRARY_PATH=<set>
TERM=xterm-256color
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 astdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-98-generic
root=/dev/mapper/umbocv_vg-root ro
PulseList:
Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not
accessible: Permission denied
No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-4.4.0-98-generic N/A
linux-backports-modules-4.4.0-98-generic N/A
linux-firmware 1.157.13
RfKill:
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/05/2016
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 3203
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: Z10PG-D24 Series
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 17
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr3203:bd05/05/2016:svnASUSTeKCOMPUTERINC.:pnESC8000G3Series:pvrRev1.xx:rvnASUSTeKCOMPUTERINC.:rnZ10PG-D24Series:rvrRev1.xx:cvnToBeFilledByO.E.M.:ct17:cvrToBeFilledByO.E.M.:
dmi.product.name: ESC8000 G3 Series
dmi.product.version: Rev 1.xx
dmi.sys.vendor: ASUSTeK COMPUTER INC.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1733306
Title:
FS-Cache: Assertion failed
Status in linux package in Ubuntu:
New
Bug description:
I'm encountering many random kernel panic after enabling fsc with NFS.
Then I see a number of following err msgs right before it crashed.
Nov 20 12:04:26 g2 kernel: [170689.549374] FS-Cache:
Nov 20 12:04:26 g2 kernel: [170689.549381] FS-Cache: Assertion failed
Nov 20 12:04:26 g2 kernel: [170689.549384] FS-Cache: 6 == 5 is false
Nov 20 12:04:26 g2 kernel: [170689.549439] ------------[ cut here
]------------
Nov 20 12:04:26 g2 kernel: [170689.549490] kernel BUG at
/build/linux-3phnTq/linux-4.4.0/fs/fscache/operation.c:494!
Nov 20 12:04:26 g2 kernel: [170689.549557] invalid opcode: 0000 [#1] SMP
Nov 20 12:04:26 g2 kernel: [170689.549598] Modules linked in: veth xt_nat
xt_tcpudp ipt_MASQUERADE nf_nat_masquerade_ipv4 nf_conntrack_netlink nfnetlink
xfrm_user xfrm_algo iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
xt_addrtype iptable_filter ip_tables xt_conntrack x_tables nf_nat nf_conntrack
br_netfilter bridge stp llc aufs cachefiles ipmi_devintf rpcsec_gss_krb5
auth_rpcgss nfsv4 nfs lockd grace fscache snd_hda_codec_hdmi intel_rapl
x86_pkg_temp_thermal intel_powerclamp kvm_intel kvm ipmi_ssif irqbypass
serio_raw joydev input_leds snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep
snd_pcm nvidia_uvm(POE) sb_edac snd_seq_midi snd_seq_midi_event edac_core
snd_rawmidi snd_seq snd_seq_device snd_timer snd soundcore mei_me lpc_ich mei
shpchp wmi ipmi_si 8250_fintek ipmi_msghandler acpi_pad acpi_power_meter
mac_hid sunrpc ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr
iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nct6775 hwmon_vid coretemp
bonding parport_pc ppdev lp parport autofs4 xfs btrfs raid10 raid456
async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq
libcrc32c raid1 raid0 multipath linear nvidia_drm(POE) nvidia_modeset(POE)
hid_generic crct10dif_pclmul ast crc32_pclmul ghash_clmulni_intel aesni_intel
aes_x86_64 lrw gf128mul nvidia(POE) glue_helper ttm ablk_helper igb cryptd
drm_kms_helper psmouse syscopyarea dca sysfillrect ptp sysimgblt fb_sys_fops
pps_core ahci i2c_algo_bit drm libahci fjes usbhid hid
Nov 20 12:04:26 g2 kernel: [170689.550993] CPU: 22 PID: 6373 Comm:
kworker/u98:1 Tainted: P OE 4.4.0-98-generic #121-Ubuntu
Nov 20 12:04:26 g2 kernel: [170689.551071] Hardware name: ASUSTeK COMPUTER
INC. ESC8000 G3 Series/Z10PG-D24 Series, BIOS 3203 05/05/2016
Nov 20 12:04:26 g2 kernel: [170689.551160] Workqueue: fscache_operation
fscache_op_work_func [fscache]
Nov 20 12:04:26 g2 kernel: [170689.551219] task: ffff882027887000 ti:
ffff881429ea4000 task.ti: ffff881429ea4000
Nov 20 12:04:26 g2 kernel: [170689.551283] RIP: 0010:[<ffffffffc065df96>]
[<ffffffffc065df96>] fscache_put_operation+0x1d6/0x210 [fscache]
Nov 20 12:04:26 g2 kernel: [170689.551374] RSP: 0018:ffff881429ea7de0
EFLAGS: 00010282
Nov 20 12:04:26 g2 kernel: [170689.551421] RAX: 0000000000000019 RBX:
ffff882037224300 RCX: 0000000000000006
Nov 20 12:04:26 g2 kernel: [170689.551490] RDX: 0000000000000000 RSI:
0000000000000246 RDI: ffff88203f28dd50
Nov 20 12:04:26 g2 kernel: [170689.551551] RBP: ffff881429ea7df8 R08:
000000000000000a R09: 00000000000009c0
Nov 20 12:04:26 g2 kernel: [170689.551611] R10: ffff88120db1b300 R11:
00000000000009c0 R12: ffff882038bf8000
Nov 20 12:04:26 g2 kernel: [170689.551672] R13: ffff88202ff08800 R14:
0000000000000c40 R15: ffff882037224300
Nov 20 12:04:26 g2 kernel: [170689.551733] FS: 0000000000000000(0000)
GS:ffff88203f280000(0000) knlGS:0000000000000000
Nov 20 12:04:26 g2 kernel: [170689.551801] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
Nov 20 12:04:26 g2 kernel: [170689.551850] CR2: 00007f66b2887500 CR3:
0000000001e0a000 CR4: 00000000003406e0
Nov 20 12:04:26 g2 kernel: [170689.551912] DR0: 0000000000000000 DR1:
0000000000000000 DR2: 0000000000000000
Nov 20 12:04:26 g2 kernel: [170689.551972] DR3: 0000000000000000 DR6:
00000000fffe0ff0 DR7: 0000000000000400
Nov 20 12:04:26 g2 kernel: [170689.552030] Stack:
Nov 20 12:04:26 g2 kernel: [170689.552051] ffff882037224300 ffff882038bf8000
ffff88202ff08800 ffff881429ea7e10
Nov 20 12:04:26 g2 kernel: [170689.552124] ffffffffc065e1ca ffff88203439e780
ffff881429ea7e50 ffffffff8109a635
Nov 20 12:04:26 g2 kernel: [170689.552196] 0000000000000000 ffff88203439e7b0
ffff882038bf8000 0000000000000088
Nov 20 12:04:26 g2 kernel: [170689.552267] Call Trace:
Nov 20 12:04:26 g2 kernel: [170689.552299] [<ffffffffc065e1ca>]
fscache_op_work_func+0x2a/0x50 [fscache]
Nov 20 12:04:26 g2 kernel: [170689.552363] [<ffffffff8109a635>]
process_one_work+0x165/0x480
Nov 20 12:04:26 g2 kernel: [170689.552417] [<ffffffff8109a99b>]
worker_thread+0x4b/0x4c0
Nov 20 12:04:26 g2 kernel: [170689.552468] [<ffffffff8109a950>] ?
process_one_work+0x480/0x480
Nov 20 12:04:26 g2 kernel: [170689.552522] [<ffffffff810a0c75>]
kthread+0xe5/0x100
Nov 20 12:04:26 g2 kernel: [170689.552567] [<ffffffff810a0b90>] ?
kthread_create_on_node+0x1e0/0x1e0
Nov 20 12:04:26 g2 kernel: [170689.552626] [<ffffffff81844a4f>]
ret_from_fork+0x3f/0x70
Nov 20 12:04:26 g2 kernel: [170689.552674] [<ffffffff810a0b90>] ?
kthread_create_on_node+0x1e0/0x1e0
Nov 20 12:04:26 g2 kernel: [170689.552730] Code: c7 c7 fb 32 66 c0 e8 d1 02
b3 c0 48 c7 c7 09 33 66 c0 e8 c5 02 b3 c0 8b 73 40 ba 05 00 00 00 48 c7 c7 b0
1e 66 c0 e8 b1 02 b3 c0 <0f> 0b 48 c7 c7 fb 32 66 c0 e8 a3 02 b3 c0 48 c7 c7 09
33 66 c0
Nov 20 12:04:26 g2 kernel: [170689.553040] RIP [<ffffffffc065df96>]
fscache_put_operation+0x1d6/0x210 [fscache]
Nov 20 12:04:26 g2 kernel: [170689.553111] RSP <ffff881429ea7de0>
Nov 20 12:04:26 g2 kernel: [170689.571801] ---[ end trace 1e9e97557a315242
]---
# uname -a
Linux g2 4.4.0-98-generic #121-Ubuntu SMP Tue Oct 10 14:24:03 UTC 2017 x86_64
x86_64 x86_64 GNU/Linux
# cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04.3 LTS"
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-98-generic 4.4.0-98.121
ProcVersionSignature: Ubuntu 4.4.0-98.121-generic 4.4.90
Uname: Linux 4.4.0-98-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.12
Architecture: amd64
Date: Mon Nov 20 19:06:29 2017
HibernationDevice: RESUME=/dev/mapper/umbocv_vg-swap_1
InstallationDate: Installed on 2017-06-14 (159 days ago)
InstallationMedia: Ubuntu-Server 16.04 LTS "Xenial Xerus" - Release amd64
(20160420.3)
MachineType: ASUSTeK COMPUTER INC. ESC8000 G3 Series
ProcEnviron:
LD_LIBRARY_PATH=<set>
TERM=xterm-256color
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 astdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-98-generic
root=/dev/mapper/umbocv_vg-root ro
PulseList:
Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not
accessible: Permission denied
No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-4.4.0-98-generic N/A
linux-backports-modules-4.4.0-98-generic N/A
linux-firmware 1.157.13
RfKill:
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/05/2016
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 3203
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: Z10PG-D24 Series
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 17
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr3203:bd05/05/2016:svnASUSTeKCOMPUTERINC.:pnESC8000G3Series:pvrRev1.xx:rvnASUSTeKCOMPUTERINC.:rnZ10PG-D24Series:rvrRev1.xx:cvnToBeFilledByO.E.M.:ct17:cvrToBeFilledByO.E.M.:
dmi.product.name: ESC8000 G3 Series
dmi.product.version: Rev 1.xx
dmi.sys.vendor: ASUSTeK COMPUTER INC.
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