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authorEric W. Biederman <ebiederm@xmission.com>2021-09-03 18:26:05 +0300
committerEric W. Biederman <ebiederm@xmission.com>2021-10-06 19:27:55 +0300
commit7e3c4fb7fc19bcf20657de3edb718ec1b26c7df3 (patch)
tree4105e71b67facde85813e97980122b6df56f0b34 /kernel/exit.c
parent4f627af8e6068892cafe031df6c14e8a0aaaa426 (diff)
exec: Check for a pending fatal signal instead of core_state
Prevent exec continuing when a fatal signal is pending by replacing mmap_read_lock with mmap_read_lock_killable. This is always the right thing to do as userspace will never observe an exec complete when there is a fatal signal pending. With that change it becomes unnecessary to explicitly test for a core dump in progress. In coredump_wait zap_threads arranges under mmap_write_lock for all tasks that use a mm to also have SIGKILL pending, which means mmap_read_lock_killable will always return -EINTR when old_mm->core_state is present. Link: https://lkml.kernel.org/r/87fstux27w.fsf@disp2133 Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'kernel/exit.c')
0 files changed, 0 insertions, 0 deletions