[LU-18428] obdfilter-survey test_1b: ZFS OOM crash in dbuf_assign_arcbuf()

• Type: Bug
• Resolution: Unresolved
• Priority: Minor
• Severity: 3
• Assignee: WC Triage
• Reporter: Maloo

Description

This issue was created by maloo for Andreas Dilger <[e-mail]>

This issue relates to the following test suite run:
https://testing.whamcloud.com/test_sets/e7654e65-0d9c-4d1a-b87b-79186807cb17
https://testing.whamcloud.com/test_sets/6667b153-6e28-490c-b25a-c3297d8fd02c
https://testing.whamcloud.com/test_sets/003ad4f8-4965-4b73-ad09-7f40de8e0ba2

test_1b failed with the following error:

onyx-38vm3 crashed during obdfilter-survey test_1b

ZFS Version (on server (ost)):

cat console.onyx-38vm3.log | grep ZFS: | grep module
[    3.355236] ZFS: Loaded module v2.1.15-1, ZFS pool version 5000, ZFS filesystem version 5

Test session details:
clients: https://build.whamcloud.com/job/lustre-reviews/108858 - 4.18.0-513.24.1.el8_9.x86_64
servers: https://build.whamcloud.com/job/lustre-reviews/108858 - 4.18.0-513.24.1.el8_lustre.x86_64

  out_of_memory.cold.36+0xa/0x7e
  __alloc_pages_slowpath+0xbf0/0xcd0
  __alloc_pages_nodemask+0x2e2/0x330
  new_slab+0x3ed/0x520
  ___slab_alloc.part.91+0x441/0x740
  __kmalloc_node+0xcc/0x2b0
  spl_kmem_zalloc+0xcf/0x120 [spl]
  dbuf_dirty+0x18e/0x950 [zfs]
  dbuf_assign_arcbuf+0xd8/0x1f0 [zfs]
  dmu_assign_arcbuf_by_dnode+0x128/0x170 [zfs]
  dmu_assign_arcbuf_by_dbuf+0x40/0x60 [zfs]
  osd_write_commit+0x566/0xc40 [osd_zfs]
  ofd_commitrw_write+0x9df/0x1b00 [ofd]
  ofd_commitrw+0x5dc/0xd80 [ofd]
  echo_client_prep_commit.isra.40+0x5a2/0x1060 [obdecho]
  echo_client_iocontrol+0xfdb/0x1660 [obdecho]
  class_handle_ioctl+0xea8/0x1ce0 [obdclass]
  obd_class_ioctl+0x13b/0x190 [obdclass]
  do_vfs_ioctl+0xa4/0x690
  ksys_ioctl+0x64/0xa0

VVVVVVV DO NOT REMOVE LINES BELOW, Added by Maloo for auto-association VVVVVVV
obdfilter-survey test_1b - onyx-38vm3 crashed during obdfilter-survey test_1b