mbox series

[0/4] Use new infrastructure to fix deadlocks in execve

Message ID AM6PR03MB51701C6F60699F99C5C67E0BE4FF0@AM6PR03MB5170.eurprd03.prod.outlook.com
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Series Use new infrastructure to fix deadlocks in execve | expand

Message

Bernd Edlinger March 10, 2020, 1:43 p.m. UTC 
This is a follow up on Eric's patch series to
fix the deadlocks observed with ptracing when execve
in multi-threaded applications.

This fixes the simple and most important case where
the cred_guard_mutex causes strace to deadlock.

This also adds a test case (which is only partially
fixed so far, the rest of the fixes will follow
soon).

Two trivial comment fixes are also included.

Bernd Edlinger (4):
  exec: Fix a deadlock in ptrace
  selftests/ptrace: add test cases for dead-locks
  mm: docs: Fix a comment in process_vm_rw_core
  kernel: doc: remove outdated comment in prepare_kernel_cred

 kernel/cred.c                             |  2 -
 kernel/fork.c                             |  4 +-
 mm/process_vm_access.c                    |  2 +-
 tools/testing/selftests/ptrace/Makefile   |  4 +-
 tools/testing/selftests/ptrace/vmaccess.c | 86 +++++++++++++++++++++++++++++++
 5 files changed, 91 insertions(+), 7 deletions(-)
 create mode 100644 tools/testing/selftests/ptrace/vmaccess.c