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January 2026

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2 discussions

[Typo] libheif optdepends displays "hei-enc" instead of "heif-enc"
by Les Boys 18 Jan '26

18 Jan '26

Hi Antonio, While updating my system, I noticed a small typo in the optional dependencies message for libheif: > libtiff: for heif-dec and hei-enc [Installed] The tool name should be "heif-enc", not "hei-enc" (missing 'f'). This likely comes from the optdepends array in the PKGBUILD. Thanks for maintaining the package!

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Re: refcount_warn_saturate in __btrfs_release_delayed_node for 6.18.2-arch2-1
by Christian Heusel 07 Jan '26

07 Jan '26

On 26/01/06 05:10PM, Leo Martins wrote: > On Tue, 06 Jan 2026 22:01:58 +0000 "Gideon Farrell" <gideon(a)solnickfarrell.co.uk> wrote: > > > Hi there, > > > > I recently experienced a type of crash I haven't seen before on this system which seems to originate in __btrfs_release_delayed_node on Kernel 6.18.2-arch2-1. > > Hey, thanks for the report. This looks very similar to a different > report that has been fixed in 6.19-rc5. > Report: https://lore.kernel.org/oe-lkp/202511262228.6dda231e-lkp@intel.com/ I think this is the issue we have been seeing on the Arch Linux infrastructure aswell, see this issue for reference: https://gitlab.archlinux.org/archlinux/infrastructure/-/issues/788#note_385… This has caused us to downgrade the kernel on all hosts in our infrastructure due to the crashes caused by this. > Fix: https://lore.kernel.org/linux-btrfs/7c89417ac3352ce3cb0a6373a1746155c1e2754… > > Please let me know if this fixes your issue. So far we have not found a good lab-setting to reproduce the issue outside of the production machines workloads (but we have also not looked into the issue a lot). Do you have a good reproducer already that we could use to verify the fix? Also the fix is not yet even scheduled for inclusion in the stable trees, since it is still not in linus tree right? > > > > > Here's the stack trace: > > > > ``` > > Are these the first refcount_t: warnings in your dmesg? I would > expect an earlier warning that looks like > refcount_t: addition on 0; use-after-free. > This is what our stacktrace looks like: [231923.304874] hrtimer: interrupt took 3785426 ns [472012.335914] ------------[ cut here ]------------ [472012.335919] refcount_t: addition on 0; use-after-free. [472012.335953] WARNING: CPU: 0 PID: 378191 at lib/refcount.c:25 refcount_warn_saturate+0xe5/0x110 [472012.335978] Modules linked in: wireguard libcurve25519 ip6_udp_tunnel udp_tunnel cfg80211 rfkill nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_raw iptable_security nf_tables ip6table_filter ip6_tables iptable_filter ip_tables x_tables intel_rapl_msr intel_rapl_common intel_uncore_frequency_common isst_if_mbox_msr isst_if_common skx_edac_common nfit libnvdimm encrypted_keys trusted asn1_encoder tee polyval_clmulni ghash_clmulni_intel aesni_intel rapl i2c_i801 i2c_smbus psmouse pcspkr i2c_mux joydev iTCO_wdt intel_pmc_bxt mousedev iTCO_vendor_support mac_hid tun nfnetlink vsock_loopback vmw_vsock_virtio_transport_common zram vmw_vsock_vmci_transport 842_decompress 842_compress vsock lz4hc_compress lz4_compress vmw_vmci qemu_fw_cfg virtio_net sr_mod net_failover cdrom virtio_scsi lpc_ich failover [472012.336187] intel_agp virtio_balloon virtio_gpu intel_gtt virtio_dma_buf serio_raw virtio_rng [472012.336217] CPU: 0 UID: 0 PID: 378191 Comm: kworker/u8:7 Not tainted 6.18.2-arch2-1 #1 PREEMPT(full) e9d53cde2ee9d1bdaa4464d2214ad0f22bd43723 [472012.336226] Hardware name: Hetzner vServer/Standard PC (Q35 + ICH9, 2009), BIOS 20171111 11/11/2017 [472012.336233] Workqueue: btrfs-delalloc btrfs_work_helper [472012.336243] RIP: 0010:refcount_warn_saturate+0xe5/0x110 [472012.336249] Code: 7c 7b ff 0f 0b c3 cc cc cc cc 80 3d 27 ce ae 01 00 0f 85 5e ff ff ff 48 c7 c7 88 4a 1d 9a c6 05 13 ce ae 01 01 e8 bb 7c 7b ff <0f> 0b e9 14 70 83 00 48 c7 c7 e0 4a 1d 9a c6 05 f7 cd ae 01 01 e8 [472012.336251] RSP: 0018:ffffd0da0550bb68 EFLAGS: 00010246 [472012.336257] RAX: 0000000000000000 RBX: ffff8f5461439618 RCX: 0000000000000027 [472012.336259] RDX: ffff8f55b5c1d008 RSI: 0000000000000001 RDI: ffff8f55b5c1d000 [472012.336261] RBP: ffff8f5546bee368 R08: 0000000000000000 R09: 00000000ffffefff [472012.336263] R10: ffffffff9aa613c0 R11: ffffd0da0550ba00 R12: ffff8f5459b7b310 [472012.336265] R13: 00000000071412e0 R14: ffff8f54869aec00 R15: ffff8f5546bee000 [472012.336267] FS: 0000000000000000(0000) GS:ffff8f561a4f2000(0000) knlGS:0000000000000000 [472012.336269] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [472012.336271] CR2: 00007f1662c2d000 CR3: 00000000011d0001 CR4: 00000000007706f0 [472012.336276] PKRU: 55555554 [472012.336277] Call Trace: [472012.336280] <TASK> [472012.336282] btrfs_get_delayed_node.isra.0+0xda/0x1b0 [472012.336302] btrfs_get_or_create_delayed_node.isra.0+0x134/0x1b0 [472012.336306] btrfs_delayed_update_inode+0x28/0x1e0 [472012.336310] ? btrfs_update_root_times+0x75/0xa0 [472012.336314] btrfs_update_inode+0x59/0xc0 [472012.336319] __cow_file_range_inline+0x16c/0x3f0 [472012.336325] cow_file_range_inline.constprop.0+0xd7/0x140 [472012.336357] compress_file_range+0x3d6/0x5c0 [472012.336368] ? __pfx_submit_compressed_extents+0x10/0x10 [472012.336372] btrfs_work_helper+0xe1/0x380 [472012.336376] process_one_work+0x193/0x350 [472012.336382] worker_thread+0x2d7/0x410 [472012.336387] ? __pfx_worker_thread+0x10/0x10 [472012.336391] kthread+0xfc/0x240 [472012.336394] ? __pfx_kthread+0x10/0x10 [472012.336397] ? __pfx_kthread+0x10/0x10 [472012.336400] ret_from_fork+0x1c2/0x1f0 [472012.336405] ? __pfx_kthread+0x10/0x10 [472012.336407] ret_from_fork_asm+0x1a/0x30 [472012.336415] </TASK> [472012.336416] ---[ end trace 0000000000000000 ]--- [514764.706607] clocksource: timekeeping watchdog on CPU1: Marking clocksource 'tsc' as unstable because the skew is too large: [514764.706619] clocksource: 'kvm-clock' wd_nsec: 503967155 wd_now: 15063bc7c98819 wd_last: 15063ba9bf9a66 mask: ffffffffffffffff [514764.706623] clocksource: 'tsc' cs_nsec: 504385576 cs_now: 43249c5a1bef6 cs_last: 4324980a5e4ee mask: ffffffffffffffff [514764.706626] clocksource: Clocksource 'tsc' skewed 418421 ns (0 ms) over watchdog 'kvm-clock' interval of 503967155 ns (503 ms) [514764.706629] clocksource: 'kvm-clock' (not 'tsc') is current clocksource. [514764.706631] tsc: Marking TSC unstable due to clocksource watchdog [565801.098513] BTRFS critical (device sda2): failed to delete reference to index, root 5 inode 119459904 parent 4158694 [565801.098639] ------------[ cut here ]------------ [565801.098643] BTRFS: Transaction aborted (error -2) [565801.098718] WARNING: CPU: 1 PID: 3731148 at fs/btrfs/inode.c:4297 __btrfs_unlink_inode+0x41f/0x440 [565801.098772] Modules linked in: wireguard libcurve25519 ip6_udp_tunnel udp_tunnel cfg80211 rfkill nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_raw iptable_security nf_tables ip6table_filter ip6_tables iptable_filter ip_tables x_tables intel_rapl_msr intel_rapl_common intel_uncore_frequency_common isst_if_mbox_msr isst_if_common skx_edac_common nfit libnvdimm encrypted_keys trusted asn1_encoder tee polyval_clmulni ghash_clmulni_intel aesni_intel rapl i2c_i801 i2c_smbus psmouse pcspkr i2c_mux joydev iTCO_wdt intel_pmc_bxt mousedev iTCO_vendor_support mac_hid tun nfnetlink vsock_loopback vmw_vsock_virtio_transport_common zram vmw_vsock_vmci_transport 842_decompress 842_compress vsock lz4hc_compress lz4_compress vmw_vmci qemu_fw_cfg virtio_net sr_mod net_failover cdrom virtio_scsi lpc_ich failover [565801.099194] intel_agp virtio_balloon virtio_gpu intel_gtt virtio_dma_buf serio_raw virtio_rng [565801.099264] CPU: 1 UID: 967 PID: 3731148 Comm: git Tainted: G W 6.18.2-arch2-1 #1 PREEMPT(full) e9d53cde2ee9d1bdaa4464d2214ad0f22bd43723 [565801.099294] Tainted: [W]=WARN [565801.099304] Hardware name: Hetzner vServer/Standard PC (Q35 + ICH9, 2009), BIOS 20171111 11/11/2017 [565801.099320] RIP: 0010:__btrfs_unlink_inode+0x41f/0x440 [565801.099339] Code: 9a 89 04 24 e8 82 35 a3 ff 0f 0b 8b 04 24 41 b8 01 00 00 00 e9 ee 6e 91 ff 89 c6 48 c7 c7 08 b6 1b 9a 89 04 24 e8 61 35 a3 ff <0f> 0b 8b 04 24 41 b8 01 00 00 00 e9 f5 6e 91 ff b8 f4 ff ff ff e9 [565801.099347] RSP: 0018:ffffd0da05fc3ae0 EFLAGS: 00010246 [565801.099363] RAX: 0000000000000000 RBX: ffff8f54514cf400 RCX: 0000000000000027 [565801.099369] RDX: ffff8f55b5d1d008 RSI: 0000000000000001 RDI: ffff8f55b5d1d000 [565801.099374] RBP: ffff8f554f875800 R08: 0000000000000000 R09: 00000000ffffefff [565801.099379] R10: ffffffff9aa613c0 R11: ffffd0da05fc3978 R12: ffff8f5447173770 [565801.099383] R13: ffff8f554059c930 R14: ffff8f5546bee000 R15: ffffd0da05fc3bf0 [565801.099388] FS: 00007fce22144740(0000) GS:ffff8f561a5f2000(0000) knlGS:0000000000000000 [565801.099395] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [565801.099402] CR2: 0000561bbb192000 CR3: 000000000fc4a001 CR4: 00000000007706f0 [565801.099415] PKRU: 55555554 [565801.099419] Call Trace: [565801.099424] <TASK> [565801.099438] btrfs_rename+0x3d2/0xd10 [565801.099475] btrfs_rename2+0x28/0x60 [565801.099484] vfs_rename+0x7f3/0xd90 [565801.099500] do_renameat2+0x40e/0x580 [565801.099515] __x64_sys_rename+0x7a/0xc0 [565801.099521] do_syscall_64+0x81/0x7f0 [565801.099531] ? do_user_addr_fault+0x21a/0x690 [565801.099542] ? clear_bhb_loop+0x50/0xa0 [565801.099549] ? clear_bhb_loop+0x50/0xa0 [565801.099555] ? clear_bhb_loop+0x50/0xa0 [565801.099561] entry_SYSCALL_64_after_hwframe+0x76/0x7e [565801.099568] RIP: 0033:0x7fce21e60adb [565801.099665] Code: c0 48 8b 5d f8 c9 c3 0f 1f 84 00 00 00 00 00 b8 ff ff ff ff eb eb 66 0f 1f 84 00 00 00 00 00 f3 0f 1e fa b8 52 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 8b 15 01 72 1a 00 f7 d8 [565801.099670] RSP: 002b:00007ffc913073b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 [565801.099677] RAX: ffffffffffffffda RBX: 0000561bbb167650 RCX: 00007fce21e60adb [565801.099681] RDX: 00000000ffffffff RSI: 0000561bbb16b020 RDI: 0000561bbb16a700 [565801.099685] RBP: 00007ffc913073e0 R08: 0000000000000000 R09: 0000000000000034 [565801.099689] R10: 0000000000000000 R11: 0000000000000246 R12: 0000561bbb16b020 [565801.099693] R13: 00007ffc91307530 R14: 0000000000000000 R15: 0000000000000000 [565801.099716] </TASK> [565801.099719] ---[ end trace 0000000000000000 ]--- [565801.099736] BTRFS: error (device sda2 state A) in __btrfs_unlink_inode:4297: errno=-2 No such entry [565801.099779] BTRFS info (device sda2 state EA): forced readonly [565801.099929] BTRFS: error (device sda2 state EA) in btrfs_rename:8588: errno=-2 No such entry [565843.595829] systemd-journald[382]: /var/log/journal/7c70006779c84e4289a748b91a60ece7/system.journal: Journal file corrupted, rotating. [565843.596029] systemd-journald[382]: Failed to rotate /var/log/journal/7c70006779c84e4289a748b91a60ece7/system.journal: Read-only file system [565843.637938] systemd-journald[382]: Failed to write entry to /var/log/journal/7c70006779c84e4289a748b91a60ece7/system.journal (24 items, 790 bytes) despite vacuuming, ignoring: Bad message [565875.550945] systemd-journald[382]: /var/log/journal/7c70006779c84e4289a748b91a60ece7/system.journal: Journal file corrupted, rotating. [565875.551005] systemd-journald[382]: Failed to rotate /var/log/journal/7c70006779c84e4289a748b91a60ece7/system.journal: Read-only file system Cheers, Chris

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