Btrfs transaction abort due to missing extent map during writeback (unpin_extent_cache) #404
Description
I've been doing regular i/o workloads like bundling web apps and suddenly the filesystem went read-only and I've found this in the dmesg.
[78638.434506] WARNING: CPU: 0 PID: 198324 at fs/btrfs/extent_map.c:422 unpin_extent_cache+0xc8/0x150
[78638.434516] Modules linked in: nf_conntrack_netlink rtl8xxxu mac80211 libarc4 ib_core xt_NFQUEUE xt_mark nft_compat nfnetlink_queue snd_usb_audio snd_usbmidi_lib snd_hwdep snd_ump snd_rawmidi onboard_usb_dev rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace nfs_localio netfs tun snd_seq_dummy snd_hrtimer snd_seq snd_seq_device rfcomm nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct brcmfmac_wcc nft_chain_nat nf_nat nf_conntrack uhid nf_defrag_ipv6 nf_defrag_ipv4 nf_tables bnep sunrpc brcmfmac brcmutil cfg80211 hci_bcm4377 bluetooth snd_soc_macaudio rfkill snd_soc_apple_mca ofpart snd_soc_tas2764 spi_nor snd_soc_cs42l84 mtd snd_soc_core apple_isp snd_compress snd_soc_aop ac97_bus aop_las aop_als videobuf2_dma_sg industrialio videobuf2_memops videobuf2_v4l2 videobuf2_common macsmc_hid binfmt_misc leds_pwm apple_soc_cpufreq joydev v4l2loopback(OE) videodev mc loop dm_multipath nfnetlink zram lz4hc_compress lz4_compress sdhci_pci sdhci_uhs2 sdhci
[78638.434602] cqhci mmc_core hid_apple spi_hid_apple_of spi_hid_apple tps6598x nvmem_spmi_mfd simple_mfd_spmi rtc_macsmc macsmc_reboot macsmc_hwmon appledrm macsmc_power gpio_macsmc polyval_ce asahi polyval_generic dwc3 ghash_ce apple_dcp ulpi sha3_ce drm_dma_helper sha512_ce udc_core sha512_arm64 snd_pcm_dmaengine pwm_apple apple_sio spi_apple nvmem_apple_efuses i2c_pasemi_platform i2c_pasemi_core apple_admac snd_pcm spmi_apple_controller apple_wdt aop pinctrl_apple_gpio snd_timer snd phy_apple_atc mux_apple_display_crossbar apple_dart mux_core typec macsmc_rtkit macsmc soundcore clk_apple_nco xhci_plat_hcd vfat fat nvme_apple apple_sart nvme_core nvme_auth scsi_dh_rdac scsi_dh_emc scsi_dh_alua fuse i2c_dev
[78638.434662] CPU: 0 UID: 0 PID: 198324 Comm: kworker/u33:5 Tainted: G S OE 6.14.8-400.asahi.fc42.aarch64+16k #1
[78638.434667] Tainted: [S]=CPU_OUT_OF_SPEC, [O]=OOT_MODULE, [E]=UNSIGNED_MODULE
[78638.434669] Hardware name: Apple MacBook Pro (14-inch, M1 Pro, 2021) (DT)
[78638.434671] Workqueue: btrfs-endio-write btrfs_work_helper
[78638.434679] pstate: 61400009 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
[78638.434682] pc : unpin_extent_cache+0xc8/0x150
[78638.434684] lr : unpin_extent_cache+0x64/0x150
[78638.434686] sp : ffff8000ac217c00
[78638.434688] x29: ffff8000ac217c00 x28: ffff11b44b574000 x27: 0000000000000000
[78638.434692] x26: ffff11b44cf0b138 x25: ffff11b44b574000 x24: 0000000000002000
[78638.434696] x23: ffff11b7e67eac80 x22: 0000000000002000 x21: 000000000011c8cc
[78638.434699] x20: ffff11b7e67eac58 x19: 0000000000000000 x18: 00000000000005c8
[78638.434702] x17: 2f69bc4818fca055 x16: ffffd13fd8ed1bc8 x15: 000000000000076d
[78638.434706] x14: 000000000000000e x13: 0000000000002000 x12: 0000000000000000
[78638.434709] x11: 0000000000002000 x10: 00000005221cf000 x9 : ffffd13fd8c64a9c
[78638.434713] x8 : ffff11b65e6b9d40 x7 : 00000005221cf000 x6 : 0000000000000000
[78638.434716] x5 : 0000000000000001 x4 : 0000000000002000 x3 : 0000000000000000
[78638.434719] x2 : ffff11b736bb7bb8 x1 : 0000000000002000 x0 : 0000000000000000
[78638.434723] Call trace:
[78638.434725] unpin_extent_cache+0xc8/0x150 (P)
[78638.434729] btrfs_finish_one_ordered+0x2e0/0xba0
[78638.434734] btrfs_finish_ordered_io+0x4c/0x78
[78638.434737] finish_ordered_fn+0x1c/0x30
[78638.434741] btrfs_work_helper+0xdc/0x250
[78638.434745] process_one_work+0x17c/0x410
[78638.434750] worker_thread+0x248/0x370
[78638.434754] kthread+0xf8/0x120
[78638.434758] ret_from_fork+0x10/0x20
[78638.434762] ---[ end trace 0000000000000000 ]---
[78638.434768] BTRFS warning (device nvme0n1p6): no extent map found for inode 66865883 (root 257) when unpinning extent range [8192, 16384), generation 1165516
[78638.434772] ------------[ cut here ]------------
[78638.434773] BTRFS: Transaction aborted (error -2)
[78638.434780] WARNING: CPU: 0 PID: 198324 at fs/btrfs/inode.c:3195 btrfs_finish_one_ordered+0x894/0xba0
[78638.434785] Modules linked in: nf_conntrack_netlink rtl8xxxu mac80211 libarc4 ib_core xt_NFQUEUE xt_mark nft_compat nfnetlink_queue snd_usb_audio snd_usbmidi_lib snd_hwdep snd_ump snd_rawmidi onboard_usb_dev rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace nfs_localio netfs tun snd_seq_dummy snd_hrtimer snd_seq snd_seq_device rfcomm nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct brcmfmac_wcc nft_chain_nat nf_nat nf_conntrack uhid nf_defrag_ipv6 nf_defrag_ipv4 nf_tables bnep sunrpc brcmfmac brcmutil cfg80211 hci_bcm4377 bluetooth snd_soc_macaudio rfkill snd_soc_apple_mca ofpart snd_soc_tas2764 spi_nor snd_soc_cs42l84 mtd snd_soc_core apple_isp snd_compress snd_soc_aop ac97_bus aop_las aop_als videobuf2_dma_sg industrialio videobuf2_memops videobuf2_v4l2 videobuf2_common macsmc_hid binfmt_misc leds_pwm apple_soc_cpufreq joydev v4l2loopback(OE) videodev mc loop dm_multipath nfnetlink zram lz4hc_compress lz4_compress sdhci_pci sdhci_uhs2 sdhci
[78638.434845] cqhci mmc_core hid_apple spi_hid_apple_of spi_hid_apple tps6598x nvmem_spmi_mfd simple_mfd_spmi rtc_macsmc macsmc_reboot macsmc_hwmon appledrm macsmc_power gpio_macsmc polyval_ce asahi polyval_generic dwc3 ghash_ce apple_dcp ulpi sha3_ce drm_dma_helper sha512_ce udc_core sha512_arm64 snd_pcm_dmaengine pwm_apple apple_sio spi_apple nvmem_apple_efuses i2c_pasemi_platform i2c_pasemi_core apple_admac snd_pcm spmi_apple_controller apple_wdt aop pinctrl_apple_gpio snd_timer snd phy_apple_atc mux_apple_display_crossbar apple_dart mux_core typec macsmc_rtkit macsmc soundcore clk_apple_nco xhci_plat_hcd vfat fat nvme_apple apple_sart nvme_core nvme_auth scsi_dh_rdac scsi_dh_emc scsi_dh_alua fuse i2c_dev
[78638.434887] CPU: 0 UID: 0 PID: 198324 Comm: kworker/u33:5 Tainted: G S W OE 6.14.8-400.asahi.fc42.aarch64+16k #1
[78638.434891] Tainted: [S]=CPU_OUT_OF_SPEC, [W]=WARN, [O]=OOT_MODULE, [E]=UNSIGNED_MODULE
[78638.434893] Hardware name: Apple MacBook Pro (14-inch, M1 Pro, 2021) (DT)
[78638.434894] Workqueue: btrfs-endio-write btrfs_work_helper
[78638.434898] pstate: 61400009 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
[78638.434900] pc : btrfs_finish_one_ordered+0x894/0xba0
[78638.434904] lr : btrfs_finish_one_ordered+0x894/0xba0
[78638.434906] sp : ffff8000ac217c50
[78638.434908] x29: ffff8000ac217cd0 x28: ffff11b44b574000 x27: 0000000000000000
[78638.434911] x26: ffff11b44cf0b138 x25: 0000000000002000 x24: ffff11b45c002400
[78638.434915] x23: 0000000000002000 x22: 0000000000002000 x21: ffff11b7e67eac88
[78638.434918] x20: ffff11b7e67eac58 x19: ffff11b46055a700 x18: 00000000ffffffff
[78638.434922] x17: 2f69bc4818fca055 x16: ffffd13fd8ed1bc8 x15: 000000000000000a
[78638.434925] x14: 0000000000000000 x13: 29322d20726f7272 x12: 652820646574726f
[78638.434928] x11: 0000000000000001 x10: 0000000000000001 x9 : ffffd13fd86de36c
[78638.434931] x8 : ffffd13fdbb6dfa8 x7 : ffff8000ac2179c0 x6 : ffffd13fdbb3df68
[78638.434935] x5 : ffff11bc19de3508 x4 : ffff407c3ee78000 x3 : ffff11ba65e10680
[78638.434938] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff11ba65e10680
[78638.434941] Call trace:
[78638.434943] btrfs_finish_one_ordered+0x894/0xba0 (P)
[78638.434946] btrfs_finish_ordered_io+0x4c/0x78
[78638.434949] finish_ordered_fn+0x1c/0x30
[78638.434953] btrfs_work_helper+0xdc/0x250
[78638.434956] process_one_work+0x17c/0x410
[78638.434960] worker_thread+0x248/0x370
[78638.434964] kthread+0xf8/0x120
[78638.434967] ret_from_fork+0x10/0x20
[78638.434969] ---[ end trace 0000000000000000 ]---
[78638.434976] BTRFS: error (device nvme0n1p6 state A) in btrfs_finish_one_ordered:3195: errno=-2 No such entry
[78638.434979] BTRFS info (device nvme0n1p6 state EA): forced readonly