canonical-ubuntu-qa team mailing list archive

Thread
Date
[Bug 1958416] Re: b/linux-gcp-5.4: log_check WARNING on n2d-standard-64

To: canonical-ubuntu-qa@xxxxxxxxxxxxxxxxxxx
From: Jürg Häfliger <1958416@xxxxxxxxxxxxxxxxxx>
Date: Fri, 18 Apr 2025 23:39:10 -0000
Reply-to: Bug 1958416 <1958416@xxxxxxxxxxxxxxxxxx>
Sender: noreply@xxxxxxxxxxxxx
** Tags added: kernel-daily-bug

-- 
You received this bug notification because you are a member of Canonical
Platform QA Team, which is subscribed to ubuntu-kernel-tests.
https://bugs.launchpad.net/bugs/1958416

Title:
  b/linux-gcp-5.4: log_check WARNING on n2d-standard-64

Status in ubuntu-kernel-tests:
  New
Status in linux package in Ubuntu:
  Incomplete
Status in linux-gcp package in Ubuntu:
  Invalid
Status in linux source package in Focal:
  Triaged
Status in linux-gcp source package in Focal:
  Fix Released

Bug description:
  [Impact]
  Small SWIOTLB might cause DMA failures during High IO on GCP instances using SEV.

  [Test case]
  Boot n2d-standard-2 or n2d-standard-64 instances on GCP, issue a lot of IO, and look for DMA overflow or full swiotlb messages on dmesg.

  [Potential regression]
  Boot failures should not be discarded when SWIOTLB cannot be allocated.

  
  ------------------

  
  ubuntu_boot log_check fails with: WARNING: CPU: 34 PID: 8648 at /build/linux-gcp-5.4-zTWCml/linux-gcp-5.4-5.4.0/kernel/dma/direct.c:35 report_addr+0x33/0x90

  From the serial console:

  [  137.928758] nvme 0000:00:04.0: overflow 0x0000801f68b5f000+131072 of DMA mask ffffffffffffffff bus mask 0
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.928758] nvme 0000:00:04.0: overflow 0x0000801f68b5f000+131072 of DMA mask ffffffffffffffff bus mask 0
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938685] ------------[ cut here ]------------
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938691] WARNING: CPU: 34 PID: 8648 at /build/linux-gcp-5.4-zTWCml/linux-gcp-5.4-5.4.0/kernel/dma/direct.c:35 report_addr+0x33/0x90
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938691] Modules linked in: ip6table_filter ip6_tables iptable_filter bpfilter nls_iso8859_1 input_leds pvpanic serio_raw mac_hid sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel crypto_simd cryptd glue_helper psmouse i2c_piix4 gve
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938712] CPU: 34 PID: 8648 Comm: apt-check Not tainted 5.4.0-1060-gcp #64~18.04.1-Ubuntu
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938712] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938714] RIP: 0010:report_addr+0x33/0x90
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938716] Code: 48 83 ec 08 48 8b 87 30 02 00 00 48 89 75 f8 48 85 c0 74 26 4c 8b 00 b8 fe ff ff ff 49 39 c0 76 0d 80 3d 47 67 b2 01 00 74 2e <0f> 0b c9 c3 48 83 bf 40 02 00 00 00 75 e9 eb f0 80 3d 2f 67 b2 01
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938716] RSP: 0018:ffffbd77cf99f4e0 EFLAGS: 00010282
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938718] RAX: 0000000000000000 RBX: ffff9773f8b960b0 RCX: 0000000000000000
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938718] RDX: 0000000000000000 RSI: ffff9753ff897448 RDI: 0000000000000000
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938719] RBP: ffffbd77cf99f4e8 R08: 0000000000000305 R09: 0000000000000022
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938719] R10: 000000000016dfee R11: ffffbd77cf99f218 R12: 0000000000020000
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938720] R13: ffff9753abfe9000 R14: 0000000000000001 R15: 0000000000000100
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938723] FS:  00007f55bb523740(0000) GS:ffff9753ff880000(0000) knlGS:0000000000000000
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938723] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938724] CR2: 00007f55b41d6000 CR3: 0000801f6be28000 CR4: 0000000000340ee0
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938726] Call Trace:
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938730]  dma_direct_map_page+0xe2/0xf0
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938731]  dma_direct_map_sg+0x6c/0xc0
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938735]  nvme_queue_rq+0x6fb/0xbd0
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938738]  __blk_mq_try_issue_directly+0x139/0x200
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938741]  ? mempool_free_slab+0x1/0x20
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938743]  blk_mq_request_issue_directly+0x4b/0xe0
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938744]  blk_mq_try_issue_list_directly+0x46/0xb0
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938746]  blk_mq_sched_insert_requests+0xb7/0x100
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938747]  blk_mq_flush_plug_list+0x1eb/0x2a0
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938749]  blk_flush_plug_list+0xd1/0x100
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938750]  blk_mq_make_request+0x306/0x5a0
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938751]  generic_make_request+0x121/0x300
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938754]  ? ext4_attr_store+0x60/0x270
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938755]  submit_bio+0x46/0x1c0
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938756]  ? submit_bio+0x46/0x1c0
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938758]  ext4_io_submit+0x4d/0x60
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938760]  ext4_writepages+0x624/0xe80
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938762]  do_writepages+0x4b/0xe0
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938763]  ? do_writepages+0x4b/0xe0
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938765]  ? __ext4_find_entry+0x20e/0x440
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938767]  ? __wake_up_common_lock+0x8c/0xc0
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938768]  __filemap_fdatawrite_range+0xcb/0x100
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938769]  ? __filemap_fdatawrite_range+0xcb/0x100
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938770]  filemap_flush+0x1c/0x20
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938771]  ext4_alloc_da_blocks+0x2c/0x70
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938772]  ext4_rename+0x6ee/0x930
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938774]  ext4_rename2+0x8d/0xc0
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938776]  vfs_rename+0x3dc/0xa80
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938778]  ? __d_lookup+0x104/0x140
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938779]  ? __d_lookup+0x90/0x140
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938780]  do_renameat2+0x4ca/0x590
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938781]  ? do_renameat2+0x4ca/0x590
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938783]  __x64_sys_rename+0x20/0x30
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938785]  do_syscall_64+0x57/0x190
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938788]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938789] RIP: 0033:0x7f55baf91e17
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938791] Code: 75 12 48 89 df e8 79 60 09 00 85 c0 0f 95 c0 0f b6 c0 f7 d8 5b c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 b8 52 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 09 f3 c3 0f 1f 80 00 00 00 00 48 8b 15 39 f0
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938791] RSP: 002b:00007ffed8ceca78 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938792] RAX: ffffffffffffffda RBX: 00007ffed8cecaf0 RCX: 00007f55baf91e17
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938793] RDX: 0000000001583010 RSI: 000000000181f7e0 RDI: 000000000188c7f0
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938793] RBP: 0000000000000001 R08: 0000000000004f9c R09: 00007f55b41d7958
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938794] R10: 0000000000004f6c R11: 0000000000000246 R12: 00000000017c0310
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938794] R13: 0000000001807f90 R14: 00007ffed8cecc60 R15: 00000000017d5e90
  Jan 19 12:54:30 b-lgcp-5-4-gcp-5-4-0-n2dstd64-boot kernel: [  137.938795] ---[ end trace 6a8dfca91c44dc9b ]---

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1958416/+subscriptions