WARNING with 0.6.5.10 and kernel 4.12.0 #6324
Description
System information
| Type | Version/Name |
|---|---|
| Distribution Name | Kubuntu |
| Distribution Version | 17.04 |
| Linux Kernel | 4.12.0 |
| Architecture | x86_64 |
| ZFS Version | 0.6.9.10-1ubuntu1 |
| SPL Version | 0.6.9.10-1 |
Describe the problem you're observing
I'm getting a warning on boot during zfs.mount with 0.6.9.10 and kernel 4.12.0. Kernel log for the WARNING is posted below.
The warning triggered is in super_setup_bdi_name:
WARN_ON(sb->s_bdi != &noop_backing_dev_info);
It looks like the backport commit for 4.12 support from #6089 missed a piece of the commit in master. e4cb6ee6 commit in 0.6.9.10
7dae2c81 commit in master
I've attached a patch with the missing change and confirmed the warning no longer appears:
2200-Linux-4.12-compat-super_setup_bdi_name-fix.txt
Describe how to reproduce the problem
Mount a zfs partition on 4.12.0 and 0.6.9.10.
Include any warning/errors/backtraces from the system logs
Jul 7 00:22:10 amypond kernel: [ 9.981526] ------------[ cut here ]------------
Jul 7 00:22:10 amypond kernel: [ 9.981537] WARNING: CPU: 4 PID: 2206 at fs/super.c:1281 super_setup_bdi_name+0xbe/0xd0
Jul 7 00:22:10 amypond kernel: [ 9.981538] Modules linked in: vfat fat arc4 snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic zfs(PO) zunicode(PO) zavl(PO) zcommon(PO) znvpair(PO) snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_pcm_oss snd_mixer_oss spl(O) snd_pcm snd_seq_oss snd_seq_midi snd_rawmidi coretemp intel_rapl x86_pkg_temp_thermal intel_powerclamp crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel pcbc snd_seq_midi_event snd_seq aesni_intel snd_seq_device aes_x86_64 crypto_simd iwlmvm snd_timer glue_helper efi_pstore mac80211 cryptd intel_cstate intel_rapl_perf efivars snd iwlwifi soundcore cfg80211 cdc_acm shpchp sg btusb btrtl hci_uart btbcm serdev btqca btintel bluetooth battery ecdh_generic rfkill intel_lpss_acpi intel_lpss mfd_core tpm_crb tpm_tis acpi_pad acpi_als tpm_tis_core kfifo_buf
Jul 7 00:22:10 amypond kernel: [ 9.981618] tpm industrialio nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc efivarfs ip_tables x_tables ipv6 crc_ccitt hid_generic usbhid igb e1000e dca ptp psmouse pps_core i915 hwmon intel_gtt i2c_algo_bit drm_kms_helper xhci_pci syscopyarea sysfillrect xhci_hcd sysimgblt fb_sys_fops usbcore drm usb_common fan thermal video i2c_hid pinctrl_sunrisepoint pinctrl_intel i2c_core button
Jul 7 00:22:10 amypond kernel: [ 9.981698] CPU: 4 PID: 2206 Comm: mount.zfs Tainted: P O 4.12.0-customskl #1
Jul 7 00:22:10 amypond kernel: [ 9.981701] Hardware name: Gigabyte Technology Co., Ltd. H270N-WIFI/H270N-WIFI-CF, BIOS F5 04/24/2017
Jul 7 00:22:10 amypond kernel: [ 9.981704] task: ffff961ed9556a00 task.stack: ffffb7a3ca9a4000
Jul 7 00:22:10 amypond kernel: [ 9.981714] RIP: 0010:super_setup_bdi_name+0xbe/0xd0
Jul 7 00:22:10 amypond kernel: [ 9.981716] RSP: 0018:ffffb7a3ca9a7d28 EFLAGS: 00010287
Jul 7 00:22:10 amypond kernel: [ 9.981719] RAX: 0000000000000000 RBX: ffff961ecc3eb800 RCX: 0000000000000002
Jul 7 00:22:10 amypond kernel: [ 9.981721] RDX: 0000000000000001 RSI: 00000000fffffe00 RDI: ffffffffa4166f4c
Jul 7 00:22:10 amypond kernel: [ 9.981723] RBP: ffffb7a3ca9a7da0 R08: ffff961ed5e0fab8 R09: 0000000000000000
Jul 7 00:22:10 amypond kernel: [ 9.981725] R10: ffffe54310303c00 R11: 0000000000000069 R12: ffff961edada8800
Jul 7 00:22:10 amypond kernel: [ 9.981727] R13: ffffffffc0b74a46 R14: ffffb7a3ca9a7db0 R15: 0000000000000000
Jul 7 00:22:10 amypond kernel: [ 9.981730] FS: 00007fecf836c780(0000) GS:ffff961eeed00000(0000) knlGS:0000000000000000
Jul 7 00:22:10 amypond kernel: [ 9.981732] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jul 7 00:22:10 amypond kernel: [ 9.981734] CR2: 0000564aebdd0868 CR3: 0000000418943000 CR4: 00000000003406e0
Jul 7 00:22:10 amypond kernel: [ 9.981737] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Jul 7 00:22:10 amypond kernel: [ 9.981740] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Jul 7 00:22:10 amypond kernel: [ 9.981741] Call Trace:
Jul 7 00:22:10 amypond kernel: [ 9.981796] ? dsl_pool_rele+0x19/0x30 [zfs]
Jul 7 00:22:10 amypond kernel: [ 9.981844] ? rrw_exit+0xc2/0x140 [zfs]
Jul 7 00:22:10 amypond kernel: [ 9.981884] ? zfs_domount+0xd5/0x350 [zfs]
Jul 7 00:22:10 amypond kernel: [ 9.981916] ? zpl_kill_sb+0x20/0x20 [zfs]
Jul 7 00:22:10 amypond kernel: [ 9.981953] ? zpl_fill_super+0x25/0x40 [zfs]
Jul 7 00:22:10 amypond kernel: [ 9.981958] ? mount_nodev+0x46/0xa0
Jul 7 00:22:10 amypond kernel: [ 9.981964] ? mount_fs+0x36/0x140
Jul 7 00:22:10 amypond kernel: [ 9.981971] ? vfs_kern_mount+0x62/0x100
Jul 7 00:22:10 amypond kernel: [ 9.981976] ? do_mount+0x1a7/0xc20
Jul 7 00:22:10 amypond kernel: [ 9.981982] ? copy_mount_options+0xb8/0x140
Jul 7 00:22:10 amypond kernel: [ 9.981985] ? SyS_mount+0x7e/0xd0
Jul 7 00:22:10 amypond kernel: [ 9.981992] ? entry_SYSCALL_64_fastpath+0x17/0x98
Jul 7 00:22:10 amypond kernel: [ 9.981994] Code: 83 c4 50 5b 41 5a 41 5c 41 5d 41 5e 5d c3 48 89 df 89 45 8c e8 24 a5 fa ff 8b 45 8c 48 83 c4 50 5b 41 5a 41 5c 41 5d 41 5e 5d c3 <0f> ff eb c8 b8 f4 ff ff ff eb c9 0f 1f 80 00 00 00 00 0f 1f 44
Jul 7 00:22:10 amypond kernel: [ 9.982070] ---[ end trace ea3dfd14241094c0 ]---