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

Eric W. Biederman
2020-03-10T15:38:07Z

Bernd Edlinger <bernd.edlinger@hotmail.de> writes:

> 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 kernel: doc: remove outdated comment in prepare_kernel_cred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

Applied.

Thank you,
Eric