Ceph » Linux kernel client

Crash of the kernel right after a snap of the CephFS of the / directory (cephfs-shell 'snap create backup /')

Crash logs:

Feb 14 15:02:57 silae-rbx-str1 kernel: ------------[ cut here ]------------
Feb 14 15:02:57 silae-rbx-str1 kernel: kernel BUG at fs/ceph/inode.c:1376!
Feb 14 15:02:57 silae-rbx-str1 kernel: invalid opcode: 0000 [#1] SMP NOPTI
Feb 14 15:02:58 silae-rbx-str1 kernel: CPU: 9 PID: 2116367 Comm: kworker/9:0 Not tainted 5.10.0-20-amd64 #1 Debian 5.10.158-2
Feb 14 15:02:58 silae-rbx-str1 kernel: Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./X470D4U2-2T, BIOS L4.03G 12/12/2012
Feb 14 15:02:58 silae-rbx-str1 kernel: Workqueue: ceph-msgr ceph_con_workfn [libceph]
Feb 14 15:02:58 silae-rbx-str1 kernel: RIP: 0010:ceph_fill_trace+0x912/0xac0 [ceph]
Feb 14 15:02:58 silae-rbx-str1 kernel: Code: c1 e8 92 cc 86 dc e9 41 fe ff ff 0f 0b 0f 0b 4c 89 fa 48 c7 c6 dd 7d 2a c1 48 c7 c7 f8 02 2c c1 e8 73 cc 86 dc e9 32 fe ff ff <0f> 0b 49 8b 56 40 48 c7 c6 18 b4 29 c1 44 88 54 24 08 48 c7 c7 68
Feb 14 15:02:58 silae-rbx-str1 kernel: RSP: 0018:ffff9f3683433c68 EFLAGS: 00010212
Feb 14 15:02:58 silae-rbx-str1 kernel: RAX: ffff8c5085551819 RBX: ffff8c53e3078360 RCX: ffff8c5085551800
Feb 14 15:02:58 silae-rbx-str1 kernel: RDX: 0000000000000022 RSI: 0000000000000001 RDI: ffff8c53b3dc3d68
Feb 14 15:02:58 silae-rbx-str1 kernel: RBP: ffff8c53b3dc3ce0 R08: ffffffff9ec06ed0 R09: ffff9f3683433c00
Feb 14 15:02:58 silae-rbx-str1 kernel: R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000
Feb 14 15:02:58 silae-rbx-str1 kernel: R13: ffff8c51afbbe000 R14: ffff8c526f07fb00 R15: ffff8c51a4290e40
Feb 14 15:02:58 silae-rbx-str1 kernel: FS:  0000000000000000(0000) GS:ffff8c579ec40000(0000) knlGS:0000000000000000
Feb 14 15:02:58 silae-rbx-str1 kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Feb 14 15:02:58 silae-rbx-str1 kernel: CR2: 00007fe7b03e2a20 CR3: 00000001060a6000 CR4: 0000000000350ee0
Feb 14 15:02:58 silae-rbx-str1 kernel: Call Trace:
Feb 14 15:02:58 silae-rbx-str1 kernel:  dispatch+0x7da/0x1540 [ceph]
Feb 14 15:02:58 silae-rbx-str1 kernel:  ceph_con_workfn+0x1a5f/0x2850 [libceph]
Feb 14 15:02:58 silae-rbx-str1 kernel:  ? __switch_to_asm+0x3a/0x60
Feb 14 15:02:58 silae-rbx-str1 kernel:  ? __switch_to+0x114/0x460
Feb 14 15:02:58 silae-rbx-str1 kernel:  process_one_work+0x1b6/0x350
Feb 14 15:02:58 silae-rbx-str1 kernel:  worker_thread+0x53/0x3e0
Feb 14 15:02:58 silae-rbx-str1 kernel:  ? process_one_work+0x350/0x350
Feb 14 15:02:58 silae-rbx-str1 kernel:  kthread+0x11b/0x140
Feb 14 15:02:58 silae-rbx-str1 kernel:  ? __kthread_bind_mask+0x60/0x60
Feb 14 15:02:58 silae-rbx-str1 kernel:  ret_from_fork+0x22/0x30
Feb 14 15:02:58 silae-rbx-str1 kernel: Modules linked in: cbc ceph libceph rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace sunrpc nfs_ssc fscache dm_mod overlay xt_state bonding ipmi_ssif nft_chain_nat xt_MASQUERADE nf_nat nft_counter xt_tcpudp xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables nfnetlink amd64_edac_mod edac_mce_amd kvm_amd snd_hda_intel snd_intel_dspcfg soundwire_intel soundwire_generic_allocation kvm snd_soc_core snd_compress soundwire_cadence snd_hda_codec irqbypass snd_hda_core snd_hwdep ghash_clmulni_intel soundwire_bus acpi_ipmi nls_ascii nls_cp437 aesni_intel drm_vram_helper snd_pcm libaes drm_ttm_helper vfat crypto_simd fat tpm_crb ttm cdc_ether snd_timer ipmi_si tpm_tis sp5100_tco drm_kms_helper snd cryptd glue_helper tpm_tis_core cec rapl isofs efi_pstore wmi_bmof usbnet k10temp watchdog i2c_algo_bit soundcore ipmi_devintf evdev ccp joydev mii tpm sg ipmi_msghandler rng_core button acpi_cpufreq fuse drm configfs efivarfs ip_tables x_tables autofs4
Feb 14 15:02:58 silae-rbx-str1 kernel:  ext4 crc16 mbcache jbd2 raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx sr_mod xor cdrom raid6_pq libcrc32c crc32c_generic raid0 multipath linear hid_generic uas raid1 usbhid hid md_mod usb_storage sd_mod ahci nvme libahci ixgbe xhci_pci xfrm_algo libata nvme_core dca mdio_devres xhci_hcd libphy t10_pi crc_t10dif crct10dif_generic crc32_pclmul ptp crct10dif_pclmul i2c_piix4 crc32c_intel usbcore scsi_mod crct10dif_common pps_core wmi usb_common mdio gpio_amdpt gpio_generic
Feb 14 15:02:58 silae-rbx-str1 kernel: ---[ end trace b4fcb18811dcb093 ]---
Feb 14 15:02:58 silae-rbx-str1 kernel: RIP: 0010:ceph_fill_trace+0x912/0xac0 [ceph]
Feb 14 15:02:58 silae-rbx-str1 kernel: Code: c1 e8 92 cc 86 dc e9 41 fe ff ff 0f 0b 0f 0b 4c 89 fa 48 c7 c6 dd 7d 2a c1 48 c7 c7 f8 02 2c c1 e8 73 cc 86 dc e9 32 fe ff ff <0f> 0b 49 8b 56 40 48 c7 c6 18 b4 29 c1 44 88 54 24 08 48 c7 c7 68
Feb 14 15:02:58 silae-rbx-str1 kernel: RSP: 0018:ffff9f3683433c68 EFLAGS: 00010212
Feb 14 15:02:58 silae-rbx-str1 kernel: RAX: ffff8c5085551819 RBX: ffff8c53e3078360 RCX: ffff8c5085551800
Feb 14 15:02:58 silae-rbx-str1 kernel: RDX: 0000000000000022 RSI: 0000000000000001 RDI: ffff8c53b3dc3d68
Feb 14 15:02:58 silae-rbx-str1 kernel: RBP: ffff8c53b3dc3ce0 R08: ffffffff9ec06ed0 R09: ffff9f3683433c00
Feb 14 15:02:58 silae-rbx-str1 kernel: R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000
Feb 14 15:02:58 silae-rbx-str1 kernel: R13: ffff8c51afbbe000 R14: ffff8c526f07fb00 R15: ffff8c51a4290e40
Feb 14 15:02:58 silae-rbx-str1 kernel: FS:  0000000000000000(0000) GS:ffff8c579ec40000(0000) knlGS:0000000000000000
Feb 14 15:02:58 silae-rbx-str1 kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Feb 14 15:02:58 silae-rbx-str1 kernel: CR2: 00007fe7b03e2a20 CR3: 00000001060a6000 CR4: 0000000000350ee0