Public bug reported:
we've been having this crash and finally isolated it repeatedly to NILFS2.
details below:
nilfs-tools is already the newest version (2.2.6-1).
Linux a11 4.15.0-91-generic #92-Ubuntu SMP Fri Feb 28 11:09:48 UTC 2020 x86_64
x86_64 x86_64 GNU/Linux
Ubuntu 16.04.5 LTS
Mar 20 14:00:07 a11 kernel: [31601.660406] BUG: unable to handle kernel NULL
pointer dereference at 00000000000000a8
Mar 20 14:00:07 a11 kernel: [31601.660594] IP: percpu_counter_add_batch+0x9/0x60
Mar 20 14:00:07 a11 kernel: [31601.660754] PGD 0 P4D 0
Mar 20 14:00:07 a11 kernel: [31601.660990] Oops: 0000 [#1] SMP PTI
Mar 20 14:00:07 a11 kernel: [31601.661424] Modules linked in: ufs qnx4 hfsplus
hfs minix ntfs msdos jfs xfs nilfs2 dm_crypt algif_skcipher af_alg nfsv3
rpcsec_gss_krb5 nfsv4 nfs fscache nf_conntrack_netlink nfnetlink xfrm_user
xfrm_algo xt_addrtype br_netfilter xt_CHECKSUM iptable_mangle ipt_MASQUERADE
nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4
nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp
bridge stp llc ebtable_filter ebtables devlink ip6table_filter ip6_tables
iptable_filter aufs overlay nls_iso8859_1 intel_rapl btusb btrtl btbcm btintel
bluetooth x86_pkg_temp_thermal intel_powerclamp coretemp snd_hda_codec_hdmi
kvm_intel kvm joydev input_leds ecdh_generic snd_hda_codec_realtek
snd_hda_codec_generic snd_hda_intel snd_hda_codec irqbypass snd_hda_core
crct10dif_pclmul
Mar 20 14:00:07 a11 kernel: [31601.665012] snd_hwdep crc32_pclmul snd_pcm
ghash_clmulni_intel mei_me intel_cstate eeepc_wmi mei asus_wmi wmi_bmof
intel_rapl_perf snd_timer sparse_keymap snd soundcore shpchp lpc_ich mac_hid
sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp
libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd grace sunrpc
ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid0 multipath linear
ses enclosure raid1 raid456 async_raid6_recov async_memcpy async_pq async_xor
async_tx xor nouveau raid6_pq libcrc32c video i2c_algo_bit ttm drm_kms_helper
e1000e syscopyarea hid_generic aesni_intel sysfillrect ptp sysimgblt aes_x86_64
mxm_wmi crypto_simd fb_sys_fops usbhid ahci cryptd aacraid(OE) libahci drm
scsi_transport_sas pps_core glue_helper hid wmi
Mar 20 14:00:07 a11 kernel: [31601.669388] CPU: 7 PID: 7228 Comm: segctord
Tainted: G OE 4.15.0-91-generic #92-Ubuntu
Mar 20 14:00:07 a11 kernel: [31601.670062] Hardware name: System manufacturer
System Product Name/P9X79 PRO, BIOS 4701 05/07/2014
Mar 20 14:00:07 a11 kernel: [31601.670742] RIP:
0010:percpu_counter_add_batch+0x9/0x60
Mar 20 14:00:07 a11 kernel: [31601.671401] RSP: 0018:ffffb979c3fdfcf8 EFLAGS:
00010006
Mar 20 14:00:07 a11 kernel: [31601.672080] RAX: 0000000000000003 RBX:
ffffe72f467cfa40 RCX: 000000000000001b
Mar 20 14:00:07 a11 kernel: [31601.672763] RDX: 0000000000000020 RSI:
0000000000000001 RDI: 0000000000000088
Mar 20 14:00:07 a11 kernel: [31601.673447] RBP: ffffb979c3fdfd10 R08:
0000000000000000 R09: ffff8eeaa9fdeb40
Mar 20 14:00:07 a11 kernel: [31601.674144] R10: 0000000000000230 R11:
ffff8eeaa9b52d80 R12: 0000000000000000
Mar 20 14:00:07 a11 kernel: [31601.674832] R13: 0000000000000000 R14:
ffff8eeab9288f50 R15: ffff8eeab9288dd8
Mar 20 14:00:07 a11 kernel: [31601.675510] FS: 0000000000000000(0000)
GS:ffff8eeaffdc0000(0000) knlGS:0000000000000000
Mar 20 14:00:07 a11 kernel: [31601.676190] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
Mar 20 14:00:07 a11 kernel: [31601.676874] CR2: 00000000000000a8 CR3:
000000007880a006 CR4: 00000000000606e0
Mar 20 14:00:07 a11 kernel: [31601.677567] Call Trace:
Mar 20 14:00:07 a11 kernel: [31601.678263]
__test_set_page_writeback+0x31f/0x330
Mar 20 14:00:07 a11 kernel: [31601.678955]
nilfs_segctor_do_construct+0x8ae/0x1300 [nilfs2]
Mar 20 14:00:07 a11 kernel: [31601.679639] ?
nilfs_test_metadata_dirty.isra.39+0x5b/0xb0 [nilfs2]
Mar 20 14:00:07 a11 kernel: [31601.680327] nilfs_segctor_construct+0x14b/0x2e0
[nilfs2]
Mar 20 14:00:07 a11 kernel: [31601.681022] ?
nilfs_segctor_construct+0x14b/0x2e0 [nilfs2]
Mar 20 14:00:07 a11 kernel: [31601.681721] nilfs_segctor_thread+0x106/0x390
[nilfs2]
Mar 20 14:00:07 a11 kernel: [31601.682421] kthread+0x121/0x140
Mar 20 14:00:07 a11 kernel: [31601.683120] ?
nilfs_segctor_construct+0x2e0/0x2e0 [nilfs2]
Mar 20 14:00:07 a11 kernel: [31601.683816] ?
kthread_create_worker_on_cpu+0x70/0x70
Mar 20 14:00:07 a11 kernel: [31601.684520] ret_from_fork+0x35/0x40
Mar 20 14:00:07 a11 kernel: [31601.685218] Code: 18 01 72 d7 4c 89 f6 4c 89 e7
e8 23 cf 4e 00 48 89 d8 5b 41 5c 41 5d 41 5e 5d c3 0f 1f 80 00 00 00 00 55 48
89 e5 41 55 41 54 53 <48> 8b 47 20 65 8b 18 48 63 db 48 63 ca 48 01 f3 48 39 d9
7e 0a
Mar 20 14:00:07 a11 kernel: [31601.686721] RIP:
percpu_counter_add_batch+0x9/0x60 RSP: ffffb979c3fdfcf8
Mar 20 14:00:07 a11 kernel: [31601.687463] CR2: 00000000000000a8
Mar 20 14:00:07 a11 kernel: [31601.688195] ---[ end trace 02138a77d14f06fa ]---
Mar 20 14:21:13 a11 kernel: [ 484.492137] BUG: unable to handle kernel NULL
pointer dereference at 00000000000000a8
Mar 20 14:21:13 a11 kernel: [ 484.492165] IP: percpu_counter_add_batch+0x9/0x60
Mar 20 14:21:13 a11 kernel: [ 484.492171] PGD 0 P4D 0
Mar 20 14:21:13 a11 kernel: [ 484.492178] Oops: 0000 [#1] SMP PTI
Mar 20 14:21:13 a11 kernel: [ 484.492184] Modules linked in: nilfs2 dm_crypt
algif_skcipher af_alg nfsv3 rpcsec_gss_krb5 nfsv4 nfs fscache
nf_conntrack_netlink nfnetlink xfrm_user xfrm_algo xt_addrtype br_netfilter
xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat
nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack
ipt_REJECT nf_reject_ipv4 xt_tcpudp bridge stp llc ebtable_filter ebtables
ip6table_filter devlink ip6_tables iptable_filter aufs overlay nls_iso8859_1
intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm btusb
btrtl btbcm irqbypass btintel crct10dif_pclmul bluetooth crc32_pclmul
ecdh_generic input_leds ghash_clmulni_intel snd_hda_codec_hdmi joydev eeepc_wmi
asus_wmi sparse_keymap wmi_bmof intel_cstate snd_hda_codec_realtek
intel_rapl_perf snd_hda_codec_generic
Mar 20 14:21:13 a11 kernel: [ 484.493697] snd_hda_intel snd_hda_codec
snd_hda_core snd_hwdep snd_pcm mei_me mei lpc_ich shpchp snd_timer snd
soundcore mac_hid sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core nfsd
auth_rpcgss nfs_acl lockd grace sunrpc iscsi_tcp libiscsi_tcp libiscsi
scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10
raid0 multipath linear raid1 raid456 async_raid6_recov async_memcpy async_pq
async_xor async_tx xor raid6_pq libcrc32c ses enclosure nouveau video
i2c_algo_bit ttm drm_kms_helper hid_generic aesni_intel syscopyarea sysfillrect
sysimgblt e1000e aes_x86_64 fb_sys_fops crypto_simd usbhid mxm_wmi ptp
aacraid(OE) ahci cryptd glue_helper drm hid libahci pps_core scsi_transport_sas
wmi
Mar 20 14:21:13 a11 kernel: [ 484.497041] CPU: 6 PID: 4649 Comm: segctord
Tainted: G OE 4.15.0-91-generic #92-Ubuntu
Mar 20 14:21:13 a11 kernel: [ 484.497672] Hardware name: System manufacturer
System Product Name/P9X79 PRO, BIOS 4701 05/07/2014
Mar 20 14:21:13 a11 kernel: [ 484.498306] RIP:
0010:percpu_counter_add_batch+0x9/0x60
Mar 20 14:21:13 a11 kernel: [ 484.498954] RSP: 0018:ffffb7d4c14e3cf8 EFLAGS:
00010006
Mar 20 14:21:13 a11 kernel: [ 484.499615] RAX: 0000000000000003 RBX:
fffffba347f85300 RCX: 000000000000001b
Mar 20 14:21:13 a11 kernel: [ 484.500285] RDX: 0000000000000020 RSI:
0000000000000001 RDI: 0000000000000088
Mar 20 14:21:13 a11 kernel: [ 484.500963] RBP: ffffb7d4c14e3d10 R08:
0000000000000000 R09: ffff968028dc46c0
Mar 20 14:21:13 a11 kernel: [ 484.501637] R10: 0000000000000230 R11:
ffff96802c27c470 R12: 0000000000000000
Mar 20 14:21:13 a11 kernel: [ 484.502324] R13: 000*0000000000000 R14:
ffff968028d0d390 R15: ffff968028d0d218
Mar 20 14:21:13 a11 kernel: [ 484.503000] FS: 0000000000000000(0000)
GS:ffff96803fd80000(0000) knlGS:0000000000000000
Mar 20 14:21:13 a11 kernel: [ 484.503689] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
Mar 20 14:21:13 a11 kernel: [ 484.504380] CR2: 00000000000000a8 CR3:
000000022ea0a001 CR4: 00000000000606e0
Mar 20 14:21:13 a11 kernel: [ 484.505076] Call Trace:
Mar 20 14:21:13 a11 kernel: [ 484.505763]
__test_set_page_writeback+0x31f/0x330
Mar 20 14:21:13 a11 kernel: [ 484.506458]
nilfs_segctor_do_construct+0x8ae/0x1300 [nilfs2]
Mar 20 14:21:13 a11 kernel: [ 484.507147] ?
nilfs_test_metadata_dirty.isra.39+0x5b/0xb0 [nilfs2]
Mar 20 14:21:13 a11 kernel: [ 484.507835] nilfs_segctor_construct+0x14b/0x2e0
[nilfs2]
Mar 20 14:21:13 a11 kernel: [ 484.508526] ?
nilfs_segctor_construct+0x14b/0x2e0 [nilfs2]
Mar 20 14:21:13 a11 kernel: [ 484.509228] nilfs_segctor_thread+0x106/0x390
[nilfs2]
Mar 20 14:21:13 a11 kernel: [ 484.509923] kthread+0x121/0x140
Mar 20 14:21:13 a11 kernel: [ 484.510621] ?
nilfs_segctor_construct+0x2e0/0x2e0 [nilfs2]
Mar 20 14:21:13 a11 kernel: [ 484.511312] ?
kthread_create_worker_on_cpu+0x70/0x70
Mar 20 14:21:13 a11 kernel: [ 484.512016] ret_from_fork+0x35/0x40
Mar 20 14:21:13 a11 kernel: [ 484.512708] Code: 18 01 72 d7 4c 89 f6 4c 89 e7
e8 23 cf 4e 00 48 89 d8 5b 41 5c 41 5d 41 5e 5d c3 0f 1f 80 00 00 00 00 55 48
89 e5 41 55 41 54 53 <48> 8b 47 20 65 8b 18 48 63 db 48 63 ca 48 01 f3 48 39 d9
7e 0a
Mar 20 14:21:13 a11 kernel: [ 484.514163] RIP:
percpu_counter_add_batch+0x9/0x60 RSP: ffffb7d4c14e3cf8
Mar 20 14:21:13 a11 kernel: [ 484.514893] CR2: 00000000000000a8
Mar 20 14:21:13 a11 kernel: [ 484.515608] ---[ end trace fd9a17603c6fa3c9 ]---
** Affects: nilfs2 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1868325
Title:
NILFS2 kernal crashes from normal use
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