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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-07-01 17:13:54 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-07-01 17:13:54 +0000 |
commit | 2957e9a7ea070524508a846205689431cb5c101f (patch) | |
tree | 42f079ff82e701ebcb76829974b4caca3e5b6798 /fs/exec.c | |
parent | Adding upstream version 6.9.2. (diff) | |
download | linux-2957e9a7ea070524508a846205689431cb5c101f.tar.xz linux-2957e9a7ea070524508a846205689431cb5c101f.zip |
Adding upstream version 6.9.7.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'fs/exec.c')
-rw-r--r-- | fs/exec.c | 11 |
1 files changed, 11 insertions, 0 deletions
@@ -67,6 +67,7 @@ #include <linux/time_namespace.h> #include <linux/user_events.h> #include <linux/rseq.h> +#include <linux/ksm.h> #include <linux/uaccess.h> #include <asm/mmu_context.h> @@ -268,6 +269,14 @@ static int __bprm_mm_init(struct linux_binprm *bprm) } /* + * Need to be called with mmap write lock + * held, to avoid race with ksmd. + */ + err = ksm_execve(mm); + if (err) + goto err_ksm; + + /* * Place the stack at the largest stack address the architecture * supports. Later, we'll move this to an appropriate place. We don't * use STACK_TOP because that can depend on attributes which aren't @@ -288,6 +297,8 @@ static int __bprm_mm_init(struct linux_binprm *bprm) bprm->p = vma->vm_end - sizeof(void *); return 0; err: + ksm_exit(mm); +err_ksm: mmap_write_unlock(mm); err_free: bprm->vma = NULL; |