Hi Benoit, On Mon, Aug 18, 2025 at 02:31:30PM +0200, Salvatore Bonaccorso wrote: > Hi, > > A user in Debian reported the following kernel oops when running on > 6.12.41 (but apparently as well on older versions, though there were > several netfs related similar issues, so including Max Kellermann as > well in the recipients) > > The report from Benoit Panizzon is as follows: > > > From: Benoit Panizzon <[email protected]> > > Resent-From: Benoit Panizzon <[email protected]> > > Reply-To: Benoit Panizzon <[email protected]>, [email protected] > > X-Mailer: reportbug 13.2.0 > > Date: Mon, 18 Aug 2025 10:24:32 +0200 > > To: Debian Bug Tracking System <[email protected]> > > Subject: Bug#1111455: linux-image-6.12.41+deb13-amd64: kernel BUG at > > fs/netfs/read_collect.c:316 netfs: Can't donate > > prior to front > > Delivered-To: [email protected] > > Delivered-To: [email protected] > > Message-ID: <[email protected]> > > > > Package: src:linux > > Version: 6.12.41-1 > > Severity: grave > > Justification: renders package unusable > > X-Debbugs-Cc: [email protected] > > User: [email protected] > > Usertags: amd64 > > > > Dear Maintainer, > > > > Updated my workstation from Bookworm to Trixie. /home on NFS > > > > Applications accessing data on NFS shares become unresponsive one after the > > other after a couple of minutes. > > > > Especially affected: > > * Claws-Mail > > * Chromium > > > > Suspected cachefsd being the culpit and disabled - issue persists. > > > > It looks like an invalid opcode is being used. Fairly recent CPU in use: > > > > vendor_id : AuthenticAMD > > cpu family : 25 > > model : 80 > > model name : AMD Ryzen 7 PRO 5750GE with Radeon Graphics > > stepping : 0 > > microcode : 0xa500011 > > > > Google found reports of others affected with similar kernel versions mostly > > when accessing SMB shares. > > > > [Mo Aug 18 10:11:19 2025] netfs: Can't donate prior to front > > [Mo Aug 18 10:11:19 2025] R=00001e07[4] s=6000-7fff 0/2000/2000 > > [Mo Aug 18 10:11:19 2025] folio: 4000-7fff > > [Mo Aug 18 10:11:19 2025] donated: prev=0 next=0 > > [Mo Aug 18 10:11:19 2025] s=6000 av=2000 part=2000 > > [Mo Aug 18 10:11:19 2025] ------------[ cut here ]------------ > > [Mo Aug 18 10:11:19 2025] kernel BUG at fs/netfs/read_collect.c:316! > > [Mo Aug 18 10:11:19 2025] Oops: invalid opcode: 0000 [#1] PREEMPT SMP NOPTI > > [Mo Aug 18 10:11:19 2025] CPU: 5 UID: 0 PID: 115 Comm: kworker/u64:1 Not > > tainted 6.12.41+deb13-amd64 #1 Debian 6.12.41-1 > > [Mo Aug 18 10:11:19 2025] Hardware name: LENOVO 11JN000JGE/32E4, BIOS > > M47KT26A 11/23/2022 > > [Mo Aug 18 10:11:19 2025] Workqueue: nfsiod rpc_async_release [sunrpc] > > [Mo Aug 18 10:11:19 2025] RIP: > > 0010:netfs_consume_read_data.isra.0+0xb79/0xb80 [netfs] > > [Mo Aug 18 10:11:19 2025] Code: 48 89 ea 31 f6 48 c7 c7 96 95 6f c2 e8 d0 > > 8d a2 e1 48 8b 4c 24 10 4c 89 fe 48 8b 54 24 20 48 c7 c7 b2 95 6f c2 e8 b7 > > 8d a2 e1 <0f> 0b 90 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 > > [Mo Aug 18 10:11:19 2025] RSP: 0018:ffffb4234057bd58 EFLAGS: 00010246 > > [Mo Aug 18 10:11:19 2025] RAX: 0000000000000018 RBX: ffff9aed62651ec0 RCX: > > 0000000000000027 > > [Mo Aug 18 10:11:19 2025] RDX: 0000000000000000 RSI: 0000000000000001 RDI: > > ffff9af04e4a1740 > > [Mo Aug 18 10:11:19 2025] RBP: 0000000000000000 R08: 0000000000000000 R09: > > ffffb4234057bbe8 > > [Mo Aug 18 10:11:19 2025] R10: ffffffffa50b43a8 R11: 0000000000000003 R12: > > ffff9aed6c9081e8 > > [Mo Aug 18 10:11:19 2025] R13: 0000000000004000 R14: ffff9aed6c9081e8 R15: > > 0000000000006000 > > [Mo Aug 18 10:11:19 2025] FS: 0000000000000000(0000) > > GS:ffff9af04e480000(0000) knlGS:0000000000000000 > > [Mo Aug 18 10:11:19 2025] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > > [Mo Aug 18 10:11:19 2025] CR2: 00003d3407849020 CR3: 00000002f1822000 CR4: > > 0000000000f50ef0 > > [Mo Aug 18 10:11:19 2025] PKRU: 55555554 > > [Mo Aug 18 10:11:19 2025] Call Trace: > > [Mo Aug 18 10:11:19 2025] <TASK> > > [Mo Aug 18 10:11:19 2025] netfs_read_subreq_terminated+0x2ab/0x3e0 [netfs] > > [Mo Aug 18 10:11:19 2025] nfs_netfs_read_completion+0x9c/0xc0 [nfs] > > [Mo Aug 18 10:11:19 2025] nfs_read_completion+0xf6/0x130 [nfs] > > [Mo Aug 18 10:11:19 2025] rpc_free_task+0x39/0x60 [sunrpc] > > [Mo Aug 18 10:11:19 2025] rpc_async_release+0x2f/0x40 [sunrpc] > > [Mo Aug 18 10:11:19 2025] process_one_work+0x177/0x330 > > [Mo Aug 18 10:11:19 2025] worker_thread+0x251/0x390 > > [Mo Aug 18 10:11:19 2025] ? __pfx_worker_thread+0x10/0x10 > > [Mo Aug 18 10:11:19 2025] kthread+0xd2/0x100 > > [Mo Aug 18 10:11:19 2025] ? __pfx_kthread+0x10/0x10 > > [Mo Aug 18 10:11:19 2025] ret_from_fork+0x34/0x50 > > [Mo Aug 18 10:11:19 2025] ? __pfx_kthread+0x10/0x10 > > [Mo Aug 18 10:11:19 2025] ret_from_fork_asm+0x1a/0x30 > > [Mo Aug 18 10:11:19 2025] </TASK> > > [Mo Aug 18 10:11:19 2025] Modules linked in: nfsv3 rpcsec_gss_krb5 nfsv4 > > dns_resolver nfs netfs nft_chain_nat xt_MASQUERADE nf_nat nf_conntrack > > nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables libcrc32c wireguard > > libchacha20poly1305 chacha_x86_64 poly1305_x86_64 curve25519_x86_64 > > libcurve25519_generic libchacha vxlan ip6_udp_tunnel udp_tunnel bridge stp > > llc btusb btrtl btintel btbcm btmtk bluetooth joydev qrtr nfsd auth_rpcgss > > binfmt_misc nfs_acl lockd grace nls_ascii nls_cp437 sunrpc vfat fat amd_atl > > intel_rapl_msr intel_rapl_common rtw88_8822ce rtw88_8822c edac_mce_amd > > rtw88_pci snd_sof_amd_rembrandt snd_sof_amd_acp rtw88_core kvm_amd > > snd_sof_pci snd_sof_xtensa_dsp snd_sof snd_hda_codec_realtek mac80211 kvm > > snd_hda_codec_generic snd_sof_utils snd_hda_scodec_component snd_soc_core > > snd_hda_codec_hdmi snd_hda_intel snd_compress snd_intel_dspcfg libarc4 > > snd_pcm_dmaengine irqbypass snd_intel_sdw_acpi snd_pci_ps crct10dif_pclmul > > snd_hda_codec ghash_clmulni_intel snd_rpl_pci_acp6x cfg80211 snd_hda_core > > sha512_ssse3 snd_acp_pci > > [Mo Aug 18 10:11:19 2025] sha256_ssse3 snd_acp_legacy_common sha1_ssse3 > > snd_hwdep snd_pci_acp6x aesni_intel snd_pcm gf128mul snd_pci_acp5x > > crypto_simd think_lmi snd_timer snd_rn_pci_acp3x cryptd > > firmware_attributes_class snd_acp_config wmi_bmof snd snd_soc_acpi ee1004 > > rapl snd_pci_acp3x pcspkr ccp k10temp rfkill soundcore evdev parport_pc > > ppdev lp parport configfs efi_pstore nfnetlink efivarfs ip_tables x_tables > > autofs4 ext4 mbcache jbd2 crc32c_generic hid_plantronics hid_generic usbhid > > hid amdgpu dm_mod amdxcp drm_exec gpu_sched drm_buddy i2c_algo_bit > > drm_suballoc_helper drm_display_helper cec rc_core drm_ttm_helper xhci_pci > > ttm xhci_hcd drm_kms_helper drm r8169 nvme usbcore realtek sp5100_tco > > nvme_core mdio_devres watchdog libphy crc32_pclmul i2c_piix4 video > > crc32c_intel usb_common nvme_auth i2c_smbus crc16 wmi button > > [Mo Aug 18 10:11:19 2025] ---[ end trace 0000000000000000 ]--- > > Any ideas here? Benoit can you please es well test the current 6.16.1 > ideally to verify if the problem persists there as well?
Can you still reproduce this with a more current 6.12.y version? Can you test as well the newest version of the 6.16.y version (even there was a major refactoring to see if it affects only the 6.12.y series)? Regards, Salvatore
