The patch titled
Subject: c/r: prctl: return -EFAULT instead of -EINVAL in case if underlied VMA is not found
has been added to the -mm tree. Its filename is
c-r-prctl-return-efault-instead-of-einval-in-case-if-underlied-vma-is-not-found.patch
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From: Cyrill Gorcunov <gorcunov@xxxxxxxxxx>
Subject: c/r: prctl: return -EFAULT instead of -EINVAL in case if underlied VMA is not found
In case if underlied VMA is not found prctl_set_mm will return -EINVAL,
but Michael proposed to return -EFAULT and Kosaki seconded. Make it so.
Reported-by: "Michael Kerrisk (man-pages)" <mtk.manpages@xxxxxxxxx>
Signed-off-by: Cyrill Gorcunov <gorcunov@xxxxxxxxxx>
Cc: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxx>
Cc: Pavel Emelyanov <xemul@xxxxxxxxxxxxx>,
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Serge Hallyn <serge.hallyn@xxxxxxxxxxxxx>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/sys.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff -puN kernel/sys.c~c-r-prctl-return-efault-instead-of-einval-in-case-if-underlied-vma-is-not-found kernel/sys.c
--- a/kernel/sys.c~c-r-prctl-return-efault-instead-of-einval-in-case-if-underlied-vma-is-not-found
+++ a/kernel/sys.c
@@ -1780,8 +1780,10 @@ static int prctl_set_mm(int opt, unsigne
case PR_SET_MM_ARG_END:
case PR_SET_MM_ENV_START:
case PR_SET_MM_ENV_END:
- if (!vma)
+ if (!vma) {
+ error = -EFAULT;
goto out;
+ }
#ifdef CONFIG_STACK_GROWSUP
if (vma_flags_mismatch(vma, VM_READ | VM_WRITE | VM_GROWSUP, 0))
#else
_
Subject: Subject: c/r: prctl: return -EFAULT instead of -EINVAL in case if underlied VMA is not found
Patches currently in -mm which might be from gorcunov@xxxxxxxxxx are
linux-next.patch
sethostname-setdomainname-notify-userspace-when-there-is-a-change-in-uts_kern_table.patch
sysctl-make-kernelns_last_pid-control-being-checkpoint_restore-dependent.patch
fs-proc-introduce-proc-pid-task-tid-children-entry-v9.patch
syscalls-x86-add-__nr_kcmp-syscall-v8.patch
syscalls-x86-add-__nr_kcmp-syscall-v8-comment-update.patch
syscalls-x86-add-__nr_kcmp-syscall-v8-comment-update-fix.patch
c-r-procfs-add-arg_start-end-env_start-end-and-exit_code-members-to-proc-pid-stat.patch
c-r-prctl-extend-pr_set_mm-to-set-up-more-mm_struct-entries-v2.patch
c-r-prctl-simplify-pr_set_mm-on-mm-code-data-assignment.patch
c-r-prctl-return-efault-instead-of-einval-in-case-if-underlied-vma-is-not-found.patch
c-r-prctl-add-ability-to-set-new-mm_struct-exe_file.patch
c-r-prctl-add-ability-to-set-new-mm_struct-exe_file-update-after-mm-num_exe_file_vmas-removal.patch
c-r-prctl-add-ability-to-get-clear_tid_address.patch
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