[LU-8162] Get i_mutex lock when changing SUID bits Created: 18/May/16  Updated: 06/Oct/16  Resolved: 06/Oct/16

Status: Resolved
Project: Lustre
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Bug Priority: Minor
Reporter: Ben Evans (Inactive) Assignee: Ben Evans (Inactive)
Resolution: Duplicate Votes: 0
Labels: None
Environment:

SLES-12

Issue Links:
Related
is related to LU-8025 ll_direct_io code introduced in LU-62... Resolved
is related to LU-8656 IS_NOSEC check in vvp_io_write_start ... Resolved
Severity: 3
Rank (Obsolete): 9223372036854775807

 Description   

__generic_file_aio_write assumes i_mutex lock is taken. We generally don't need it, as it's handled elsewhere in our stack, however on SLES_12, the condition is explicitly checked when changing the SUID bits and a stack is dumped (once per boot) to /var/log/messages

 Comments   
Comment by Andreas Dilger [ 06/Oct/16 ]

Close this as a duplicate of LU-8025.

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