Linux-BTRFS Archive on lore.kernel.org
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From: Chris Murphy <lists@colorremedies.com>
To: Btrfs BTRFS <linux-btrfs@vger.kernel.org>
Cc: "Holger Hoffstätte" <holger@applied-asynchrony.com>,
	"Zygo Blaxell" <ce3g8jdj@umail.furryterror.org>
Subject: Re: Kernel 5.5.8 : "WARNING: CPU: 2 PID: 4150 at fs/fs-writeback.c:2363 __writeback_inodes_sb_nr+0xa9/0xc0"
Date: Thu, 26 Mar 2020 23:59:00 -0600
Message-ID: <CAJCQCtRxiLEbD8dbWTAwqGLoGUyGxfMicx5qakqAwdVkDVs5uA@mail.gmail.com> (raw)
In-Reply-To: <20200204164918.GC13306@hungrycats.org>

I'm seeing this too, with kernel 5.5.8. It starts almost immediately
after remounting with flushoncommit.

[1098047.402847] fnuc.local kernel: BTRFS info (device sdb2): turning
on flush-on-commit
[1098047.402856] fnuc.local kernel: BTRFS info (device sdb2): disabling tree log
[1098047.402861] fnuc.local kernel: BTRFS info (device sdb2): using
free space tree
[1098053.747527] fnuc.local kernel: BTRFS info (device dm-0): turning
on flush-on-commit
[1098053.747535] fnuc.local kernel: BTRFS info (device dm-0): disabling tree log
[1098053.747538] fnuc.local kernel: BTRFS info (device dm-0): using
free space tree
[1098077.413093] fnuc.local kernel: ------------[ cut here ]------------
[1098077.413131] fnuc.local kernel: WARNING: CPU: 2 PID: 379 at
fs/fs-writeback.c:2466 __writeback_inodes_sb_nr+0xc0/0xd0
[1098077.413136] fnuc.local kernel: Modules linked in: cdc_acm
dm_crypt nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT
ip6t_REJECT nf_reject_ipv6 ip6t_rpfilter ipt_REJECT nf_reject_ipv4
xt_conntrack ebtable_nat ebtable_broute ip6table_nat ip6table_mangle
ip6table_raw ip6table_security iptable_nat nf_nat iptable_mangle
iptable_raw iptable_security nf_conntrack nf_defrag_ipv6
nf_defrag_ipv4 ip_set nfnetlink ebtable_filter ebtables
ip6table_filter ip6_tables iptable_filter cmac bnep sunrpc
snd_hda_codec_hdmi intel_rapl_msr snd_hda_codec_realtek
snd_hda_codec_generic ledtrig_audio mei_hdcp snd_hda_intel
intel_rapl_common snd_intel_dspcfg intel_powerclamp iTCO_wdt coretemp
iTCO_vendor_support snd_hda_codec kvm_intel iwlmvm mac80211 kvm
snd_hda_core libarc4 btusb irqbypass snd_hwdep snd_seq
crct10dif_pclmul iwlwifi btrtl crc32_pclmul btbcm snd_seq_device
btintel snd_pcm ghash_clmulni_intel bluetooth intel_cstate cfg80211
snd_timer snd ecdh_generic ecc soundcore r8169 mei_txe
intel_xhci_usb_role_switch mei rfkill
[1098077.413395] fnuc.local kernel:  roles i2c_i801 lpc_ich dw_dmac
intel_int0002_vgpio vfat fat binfmt_misc zram ip_tables btrfs
blake2b_generic libcrc32c xor zstd_decompress zstd_compress raid6_pq
i915 i2c_algo_bit crc32c_intel drm_kms_helper drm uas usb_storage
sdhci_acpi sdhci video mmc_core pwm_lpss_platform pwm_lpss fuse
[1098077.413515] fnuc.local kernel: CPU: 2 PID: 379 Comm:
btrfs-transacti Not tainted 5.5.8-200.fc31.x86_64 #1
[1098077.413522] fnuc.local kernel: Hardware name:  /NUC5PPYB, BIOS
PYBSWCEL.86A.0078.2019.0807.1133 08/07/2019
[1098077.413539] fnuc.local kernel: RIP: 0010:__writeback_inodes_sb_nr+0xc0/0xd0
[1098077.413553] fnuc.local kernel: Code: 0f b6 d1 48 8d 74 24 10 e8
6d fc ff ff 48 89 e7 e8 e5 fb ff ff 48 8b 44 24 50 65 48 33 04 25 28
00 00 00 75 09 48 83 c4 58 c3 <0f> 0b eb cf e8 b7 38 d9 ff 0f 1f 80 00
00 00 00 0f 1f 44 00 00 31
[1098077.413561] fnuc.local kernel: RSP: 0018:ffffabed404a7df0 EFLAGS: 00010246
[1098077.413572] fnuc.local kernel: RAX: 0000000000000000 RBX:
ffff8cc172cfc960 RCX: 0000000000000000
[1098077.413578] fnuc.local kernel: RDX: 0000000000000002 RSI:
0000000000001d2a RDI: ffff8cc17abf5000
[1098077.413585] fnuc.local kernel: RBP: ffff8cc176b84e38 R08:
ffff8cc17666e800 R09: ffffabed404a7de8
[1098077.413592] fnuc.local kernel: R10: ffff8cc048cd3758 R11:
000000000003c000 R12: ffff8cc172cf0000
[1098077.413599] fnuc.local kernel: R13: ffff8cc13dc2a000 R14:
ffff8cc172cfc938 R15: ffff8cc13dc2a000
[1098077.413608] fnuc.local kernel: FS:  0000000000000000(0000)
GS:ffff8cc17bd00000(0000) knlGS:0000000000000000
[1098077.413614] fnuc.local kernel: CS:  0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[1098077.413621] fnuc.local kernel: CR2: 0000555defae5e90 CR3:
000000014b60a000 CR4: 00000000001006e0
[1098077.413626] fnuc.local kernel: Call Trace:
[1098077.413820] fnuc.local kernel:
btrfs_commit_transaction+0x303/0xa20 [btrfs]
[1098077.413977] fnuc.local kernel:  ? start_transaction+0xbb/0x4c0 [btrfs]
[1098077.414124] fnuc.local kernel:  transaction_kthread+0x13c/0x180 [btrfs]
[1098077.414146] fnuc.local kernel:  kthread+0xf9/0x130
[1098077.414292] fnuc.local kernel:  ?
btrfs_cleanup_transaction+0x5c0/0x5c0 [btrfs]
[1098077.414306] fnuc.local kernel:  ? kthread_park+0x90/0x90
[1098077.414323] fnuc.local kernel:  ret_from_fork+0x35/0x40
[1098077.414340] fnuc.local kernel: ---[ end trace a3fc4c6144f1f7ae ]---
[1098107.620280] fnuc.local kernel: ------------[ cut here ]------------

--
Chris Murphy

      reply index

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-22  4:17 Kernels 4.15..5.0.3: " Zygo Blaxell
2019-03-22  7:32 ` Nikolay Borisov
2019-03-22 15:59   ` David Sterba
2019-03-22 17:26     ` Filipe Manana
2019-03-26 23:13       ` Zygo Blaxell
2019-03-26 23:19         ` Filipe Manana
2019-03-22 18:15     ` Zygo Blaxell
2019-05-18 21:11 ` Kernels 4.15..5.1.3: " Zygo Blaxell
2020-02-04  5:04 ` Kernels 4.15..5.5: " Zygo Blaxell
2020-02-04 13:58   ` Holger Hoffstätte
2020-02-04 16:49     ` Zygo Blaxell
2020-03-27  5:59       ` Chris Murphy [this message]

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