[LU-6918] Deadlock on transaction with iget()/clear_inode()

• Type: Bug
• Resolution: Duplicate
• Priority: Major
• Affects Version/s: Lustre 2.8.0
• Severity: 3
• Assignee: WC Triage
• Reporter: Andriy Skulysh

Description

Thread 1:

schedule
start_this_handle
jbd2_journal_start
ldiskfs_journal_start_sb
ldiskfs_dquot_drop
vfs_dq_drop
clear_inode
dispose_list
shrink_icache_memory
shrink_slab
zone_reclaim
get_page_from_freelist
__alloc_pages_nodemask
alloc_pages_vma
do_huge_pmd_anonymous_page
handle_mm_fault
__do_page_fault
do_page_fault
page_fault

Thread2:

__wait_on_freeing_inode
find_inode_fast
ifind_fast
iget_locked
ldiskfs_iget
osd_iget
osd_index_ea_delete
out_obj_index_delete
out_tx_index_delete_exec
out_tx_end
out_handle
tgt_request_handle
ptlrpc_main
kthread
kernel_thread

Issue Links

• is related to: LU-6969 osd_internal.h:1090:osd_trans_exec_check()) LBUG for osd_index_ea_delete()