XPost: linux.kernel, linux.debian.kernel
From: carnil@debian.org
Control: forwarded -1 https://lore.kernel.org/linux-nfs/17715092
798.685104.7049795383788483707@eldamar.lan
Hi
Norbert Zentai reported in Debian at https://bugs.debian.org/1126957
On Wed, Feb 04, 2026 at 04:59:10PM +0100, Norbert Zentai wrote:
> Package: linux-image-amd64
> Version: 6.17.13-1~bpo13+1
>
> When I repeatedly mount an NFSv4 share using the following command:
> mount -t nfs4 -o xprtsec=mtls nfs-server.local:/rpool/demo-share /mnt
>
> and the command fails with one of the following:
> mount.nfs4: access denied by server while mounting
> nfs-server.local:/rpool/demo-share
> OR
> mount.nfs4: Broken pipe for nfs-server.local:/rpool/demo-share on /mnt
>
> after a couple of tries I receive the following kernel panic:
>
> [ 39.161785] kernel BUG at mm/slub.c:563!
> [ 39.164131] Oops: invalid opcode: 0000 [#1] SMP PTI
> [ 39.166674] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted
> 6.17.13+deb13-amd64 #1 PREEMPT(lazy) Debian 6.17.13-1~bpo13+1
> [ 39.172472] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
> rel-1.17.0-0-gb52ca86e094d-prebuilt.qemu.org 04/01/2014
> [ 39.178438] RIP: 0010:__slab_free+0x152/0x310
> [ 39.180996] Code: 00 4c 89 ff e8 df 95 9c 00 48 8b 14 24 48 8b 4c 24 20
> 48 89 44 24 08 48 8b 03 48 c1 e8 09 83 e0 01 88 44 24 13 e9 71 ff ff ff <0f>
> 0b 66 41 f7 44 24 08 87 04 75 b3 eb a9 66 41 f7 44 24 08 87 04
> [ 39.190660] RSP: 0018:ffffd19100003dc0 EFLAGS: 00010246
> [ 39.193455] RAX: ffff8bf903e9f150 RBX: fffff9e7c00fa7c0 RCX:
> 000000000010000c
> [ 39.197106] RDX: ffff8bf903e9f100 RSI: fffff9e7c00fa7c0 RDI:
> ffffd19100003e30
> [ 39.200820] RBP: ffffd19100003e60 R08: 0000000000000001 R09:
> ffffffffab62d068
> [ 39.204472] R10: 0000000000000002 R11: ffffffffad208100 R12:
> ffff8bf9011fe900
> [ 39.208167] R13: ffff8bf903e9f100 R14: ffff8bf9011fe900 R15:
> ffffffffab62d068
> [ 39.211793] FS: 0000000000000000(0000) GS:ffff8bf9cfdb6000(0000)
> knlGS:0000000000000000
> [ 39.215868] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 39.219011] CR2: 00007f7dfcbb71a0 CR3: 0000000008b12000 CR4:
> 00000000000006f0
> [ 39.222866] Call Trace:
> [ 39.224294]
> [ 39.225436] ? rcu_do_batch+0x1c8/0x570
> [ 39.227443] kmem_cache_free+0x3a3/0x450
> [ 39.229579] ? free_uid+0x3c/0xc0
> [ 39.231375] rcu_do_batch+0x1c8/0x570
> [ 39.233332] ? rcu_do_batch+0x167/0x570
> [ 39.235461] rcu_core+0x175/0x350
> [ 39.237280] handle_softirqs+0xdf/0x320
> [ 39.239381] __irq_exit_rcu+0xbc/0xe0
> [ 39.241366] sysvec_apic_timer_interrupt+0x71/0x90
> [ 39.243928]
> [ 39.245097]
> [ 39.246375] asm_sysvec_apic_timer_interrupt+0x1a/0x20
> [ 39.249011] RIP: 0010:pv_native_safe_halt+0xf/0x20
> [ 39.251544] Code: 20 d0 c3 cc cc cc cc 0f 1f 40 00 90 90 90 90 90 90 90
> 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d 55 92 1a 00 fb f4
> 3c 2a 01 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
> [ 39.262235] RSP: 0018:ffffffffad203e70 EFLAGS: 00000212
> [ 39.265355] RAX: 0000000000000000 RBX: ffffffffad213080 RCX:
> ffff8bf90390b320
> [ 39.269527] RDX: 4000000000000000 RSI: 0000000000000000 RDI:
> 000000000001979c
> [ 39.273714] RBP: 0000000000000000 R08: 000000091e153ed8 R09:
> 0000000000000001
> [ 39.277877] R10: 0000000000000000 R11: ffff8bf97dc1cd00 R12:
> 0000000000000000
> [ 39.282054] R13: 0000000000000000 R14: 0000000000000000 R15:
> 000000000008a000
> [ 39.286400] default_idle+0x9/0x20
> [ 39.287579] default_idle_call+0x29/0x100
> [ 39.288952] do_idle+0x1f8/0x240
> [ 39.290106] cpu_startup_entry+0x29/0x30
> [ 39.291428] rest_init+0xe7/0xf0
> [ 39.292561] start_kernel+0x776/0x780
> [ 39.293848] x86_64_start_reservations+0x24/0x30
> [ 39.295443] x86_64_start_kernel+0x126/0x130
> [ 39.297322] common_startup_64+0x13e/0x141
> [ 39.299047]
> [ 39.300130] Modules linked in: tls rpcsec_gss_krb5 nfsv4 dns_resolver nfs
> lockd grace netfs cfg80211 rfkill 8021q garp stp llc mrp binfmt_misc
> aesni_intel pcspkr virtio_balloon button joydev evdev sg auth_rpcgss
> efi_pstore sunrpc configfs nfnetlink vsock_loopback
> vmw_vsock_virtio_transport_common vmw_vsock_vmci_transport vsock vmw_vmci
> qemu_fw_cfg ip_tables x_tables autofs4 ext4 crc16 mbcache jbd2
> crc32c_cryptoapi hid_generic usbhid hid sr_mod cdrom uhci_hcd bochs
> ata_generic ehci_pci drm_client_lib sd_mod drm_shmem_helper ata_piix
> ehci_hcd drm_kms_helper usbcore virtio_net libata psmouse drm virtio_scsi
> net_failover scsi_mod i2c_piix4 failover i2c_smbus serio_raw usb_common
> scsi_common floppy
> [ 39.321098] ---[ end trace 0000000000000000 ]---
> [ 39.322977] RIP: 0010:__slab_free+0x152/0x310
> [ 39.324762] Code: 00 4c 89 ff e8 df 95 9c 00 48 8b 14 24 48 8b 4c 24 20
> 48 89 44 24 08 48 8b 03 48 c1 e8 09 83 e0 01 88 44 24 13 e9 71 ff ff ff <0f>
> 0b 66 41 f7 44 24 08 87 04 75 b3 eb a9 66 41 f7 44 24 08 87 04
> [ 39.331380] RSP: 0018:ffffd19100003dc0 EFLAGS: 00010246
> [ 39.333381] RAX: ffff8bf903e9f150 RBX: fffff9e7c00fa7c0 RCX:
> 000000000010000c
> [ 39.335985] RDX: ffff8bf903e9f100 RSI: fffff9e7c00fa7c0 RDI:
> ffffd19100003e30
> [ 39.338598] RBP: ffffd19100003e60 R08: 0000000000000001 R09:
> ffffffffab62d068
> [ 39.341237] R10: 0000000000000002 R11: ffffffffad208100 R12:
> ffff8bf9011fe900
> [ 39.343830] R13: ffff8bf903e9f100 R14: ffff8bf9011fe900 R15:
> ffffffffab62d068
> [ 39.346460] FS: 0000000000000000(0000) GS:ffff8bf9cfdb6000(0000)
> knlGS:0000000000000000
> [ 39.349343] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 39.351503] CR2: 00007f7dfcbb71a0 CR3: 0000000008b12000 CR4:
> 00000000000006f0
> [ 39.354071] Kernel panic - not syncing: Fatal exception in interrupt
> [ 39.356640] Kernel Offset: 0x2a200000 from 0xffffffff81000000 (relocation
[continued in next message]
--- SoupGate-Win32 v1.05
* Origin: you cannot sedate... all the things you hate (1:229/2)
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