Can the priority be upped? We have data sitting on the drive and afraid to
modify it for fear of data loss. We've seen crashes from reads as well, but
haven't identified the source, so we just leave it alone until it gets
fixed.
On Sat, May 16, 2020 at 4:00 PM Launchpad Bug Tracker <
1868...@bugs.launchpad.net> wrote:
> Status changed to 'Confirmed' because the bug affects multiple users.
>
> ** Changed in: nilfs2 (Ubuntu)
>Status: New => Confirmed
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1868325
>
> Title:
> NILFS2 kernal crashes from normal use
>
> Status in nilfs2 package in Ubuntu:
> Confirmed
>
> Bug description:
> 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 00a8
> 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: [#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 OE4.15.0-91-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:b979c3fdfcf8
> EFLAGS: 00010006
> Mar 20 14:00:07 a11 kernel: [31601.672080] RAX: 0003 RBX:
> e72f467cfa40 RCX: 001b
> Mar 20 14:00:07 a11 kernel: [31601.672763] RDX: 0020 RSI:
> 0001 RDI: 0088
> Mar 20 14:00:07 a11 kernel: [31601.673447] RBP: b979c3fdfd10 R08:
> R09: 8eeaa9fdeb40
> Mar 20 14:00:07 a11 kernel: [31601.674144] R10: 0230 R11:
> 8eeaa9b52d80 R12:
> Mar 20 14:00:07 a11 kernel: [31601.674832] R13: R14:
> 8eeab9288f50 R15: 8eeab9288dd8
> Mar 20 14:00:07 a11 kernel: [31601.675510] FS: ()
> GS:8eeaffdc() knlGS:
> Mar 20 14:00:07 a11 kernel: [31601.676190] CS: 0010 DS: ES:
> CR0: 80050033
> Mar 20 14:00:07 a11 kernel: [31601.676874] CR2: 00a8 CR3:
> 7880a006 CR4: 000606e0
> 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
