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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-09-20 17:38:55 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-09-20 17:38:55 +0200 |
| commit | f489921dba468b3d208a5234dcbf7f21a615f395 (patch) | |
| tree | 1d8f3389edc506689e0bd62c4fe64414ce4d0f9d /fs | |
| parent | Linux 6.0-rc6 (diff) | |
| parent | Revert "fs/exec: allow to unshare a time namespace on vfork+exec" (diff) | |
| download | linux-f489921dba468b3d208a5234dcbf7f21a615f395.tar.xz linux-f489921dba468b3d208a5234dcbf7f21a615f395.zip | |
Merge tag 'execve-v6.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull execve reverts from Kees Cook:
"The recent work to support time namespace unsharing turns out to have
some undesirable corner cases, so rather than allowing the API to stay
exposed for another release, it'd be best to remove it ASAP, with the
replacement getting another cycle of testing. Nothing is known to use
this yet, so no userspace breakage is expected.
For more details, see:
https://lore.kernel.org/lkml/ed418e43ad28b8688cfea2b7c90fce1c@ispras.ru
Summary:
- Remove the recent 'unshare time namespace on vfork+exec' feature
(Andrei Vagin)"
* tag 'execve-v6.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
Revert "fs/exec: allow to unshare a time namespace on vfork+exec"
Revert "selftests/timens: add a test for vfork+exit"
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/exec.c | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/fs/exec.c b/fs/exec.c index 9a5ca7b82bfc..d046dbb9cbd0 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -65,7 +65,6 @@ #include <linux/io_uring.h> #include <linux/syscall_user_dispatch.h> #include <linux/coredump.h> -#include <linux/time_namespace.h> #include <linux/uaccess.h> #include <asm/mmu_context.h> @@ -979,12 +978,10 @@ static int exec_mmap(struct mm_struct *mm) { struct task_struct *tsk; struct mm_struct *old_mm, *active_mm; - bool vfork; int ret; /* Notify parent that we're no longer interested in the old VM */ tsk = current; - vfork = !!tsk->vfork_done; old_mm = current->mm; exec_mm_release(tsk, old_mm); if (old_mm) @@ -1029,10 +1026,6 @@ static int exec_mmap(struct mm_struct *mm) tsk->mm->vmacache_seqnum = 0; vmacache_flush(tsk); task_unlock(tsk); - - if (vfork) - timens_on_fork(tsk->nsproxy, tsk); - if (old_mm) { mmap_read_unlock(old_mm); BUG_ON(active_mm != old_mm); |