My Oracle Support Banner

Oracle Linux: The System Crashed With "DMAR: ERROR: DMA PTE for vPFN 0xffed3 already set" Message (Doc ID 2677805.1)

Last updated on JUNE 22, 2020

Applies to:

Linux OS - Version Oracle Linux 7.8 with Unbreakable Enterprise Kernel [4.14.35] and later
Linux x86-64

Symptoms

An Oracle Linux system crashed with a filesystem corruption issue,with the below call trace found in the messages log:
May 21 16:43:50 kernel: DMAR: ERROR: DMA PTE for vPFN 0xffed3 already set (to 1e20e93003 not 165299b001)
May 21 16:43:50 kernel: ------------[ cut here ]------------
May 21 16:43:50 kernel: WARNING: CPU: 0 PID: 933 at drivers/iommu/intel-iommu.c:2322 __domain_mapping+0x368/0x374
May 21 16:43:50 kernel: Modules linked in: iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_filter tcp_diag inet_diag rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace fscache bonding sunrpc ext4 sb_edac intel_powerclamp coretemp kvm_intel kvm mbcache jbd2 fscrypto ipmi_ssif iTCO_wdt iTCO_vendor_support irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel crypto_simd glue_helper cryptd dm_service_time pcspkr ipmi_si hpilo hpwdt sg lpc_ich acpi_power_meter ipmi_devintf ipmi_msghandler shpchp ioatdma pcc_cpufreq dm_multipath binfmt_misc ip_tables xfs libcrc32c ata_generic pata_acpi sd_mod mgag200 i2c_algo_bit drm_kms_helper syscopyarea sysfillrect qla2xxx sysimgblt fb_sys_fops ttm drm ata_piix crc32c_intel libata serio_raw ixgbe nvme_fc tg3
May 21 16:43:50 kernel: nvme_fabrics nvme_core hpsa mdio dca scsi_transport_fc ptp scsi_transport_sas pps_core dm_mirror dm_region_hash dm_log dm_mod
May 21 16:43:50 kernel: CPU: 0 PID: 933 Comm: kdmwork-252:2 Not tainted 4.14.35-1902.302.2.el7uek.x86_64 #2
May 21 16:43:50 kernel: Hardware name: HP ProLiant DL380p Gen8, BIOS P70 05/24/2019
May 21 16:43:50 kernel: task: ffff893dee7a0000 task.stack: ffffb22fc75a4000
May 21 16:43:50 kernel: RIP: 0010:__domain_mapping+0x368/0x374
May 21 16:43:50 kernel: RSP: 0018:ffffb22fc75a7af8 EFLAGS: 00010002
May 21 16:43:50 kernel: RAX: 0000000000000004 RBX: ffff893de40c8698 RCX: 0000000000000000
May 21 16:43:50 kernel: RDX: 0000000000000000 RSI: ffff893f7e6169c8 RDI: ffff893f7e6169c8
May 21 16:43:50 kernel: RBP: ffffb22fc75a7b58 R08: 0000000000000000 R09: ffff893dee2c4e60
May 21 16:43:50 kernel: R10: 000000000000037f R11: 000000000165299b R12: 0000000000000001
May 21 16:43:50 kernel: R13: 000000165299b001 R14: 0000000000000001 R15: 00000000000ffed3
May 21 16:43:50 kernel: FS: 0000000000000000(0000) GS:ffff893f7e600000(0000) knlGS:0000000000000000
May 21 16:43:50 kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
May 21 16:43:50 kernel: CR2: 00007fcf846bc000 CR3: 00000017ee40a002 CR4: 00000000001606f0
May 21 16:43:50 kernel: Call Trace:
May 21 16:43:50 kernel: intel_map_sg+0x101/0x1f8
May 21 16:43:50 kernel: qla24xx_start_scsi+0x482/0x5c0 [qla2xxx]
May 21 16:43:50 kernel: qla24xx_dif_start_scsi+0x9ee/0xcf0 [qla2xxx]
May 21 16:43:50 kernel: ? scsi_init_io+0x4c/0x1af
May 21 16:43:50 kernel: ? kmem_cache_alloc+0x9e/0x1ce
May 21 16:43:50 kernel: ? mempool_alloc_slab+0x15/0x17
May 21 16:43:50 kernel: ? mempool_alloc+0x73/0x16c
May 21 16:43:50 kernel: qla2xxx_queuecommand+0x400/0x4b0 [qla2xxx]
May 21 16:43:50 kernel: scsi_dispatch_cmd+0xbc/0x272
May 21 16:43:50 kernel: scsi_request_fn+0x4ea/0x6ef
May 21 16:43:50 kernel: ? bio_alloc_bioset+0xb7/0x1fd
May 21 16:43:50 kernel: __blk_run_queue+0x46/0x61
May 21 16:43:50 kernel: __elv_add_request+0xff/0x27e
May 21 16:43:50 kernel: blk_insert_cloned_request+0x139/0x1c2
May 21 16:43:50 kernel: map_request+0x159/0x220 [dm_mod]
May 21 16:43:50 kernel: map_tio_request+0x16/0x30 [dm_mod]
May 21 16:43:50 kernel: kthread_worker_fn+0x7a/0x1ab
May 21 16:43:50 kernel: kthread+0x105/0x138
May 21 16:43:50 kernel: ? kthread_cancel_delayed_work_sync+0x20/0x15
May 21 16:43:50 kernel: ? kthread_bind+0x20/0x15
May 21 16:43:50 kernel: ret_from_fork+0x3e/0x49
May 21 16:43:50 kernel: Code: 08 23 93 4c 89 5d a0 4c 89 4d a8 e8 16 2d bb ff 8b 05 0d 2b 04 01 4c 8b 4d a8 4c 8b 5d a0 85 c0 74 09 83 e8 01 89 05 f8 2a 04 01 0b e9 b5 fd ff ff e8 0c bc b4 ff 66 90 66 2e 0f 1f 84 00 00
May 21 16:43:50 kernel: ---[ end trace d5fe6cf212c18ff0 ]---

 

Changes

 

Cause

To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!


In this Document
Symptoms
Changes
Cause
Solution
References


My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.