diff --git a/patches.suse/smaps_rollup-fix-no-vmas-null-deref.patch b/patches.suse/smaps_rollup-fix-no-vmas-null-deref.patch new file mode 100644 index 0000000..6c4e57d --- /dev/null +++ b/patches.suse/smaps_rollup-fix-no-vmas-null-deref.patch @@ -0,0 +1,35 @@ +From: Seth Jenkins +Date: Mon, 3 Oct 2022 18:45:31 -0400 +Subject: [PATCH] mm: /proc/pid/smaps_rollup: fix no vma's null-deref +Patch-mainline: Never, fixed differently +References: bsc#1207769 + +mhocko@suse.com: +The upstream has fixed by c4c84f06285e ("fs/proc/task_mmu: stop using linked +list and highest_vm_end") which is a larger chabge not really suitable for +backporintg. + +Commit 258f669e7e88 ("mm: /proc/pid/smaps_rollup: convert to single value +seq_file") introduced a null-deref if there are no vma's in the task in +show_smaps_rollup. + +Fixes: 258f669e7e88 ("mm: /proc/pid/smaps_rollup: convert to single value seq_file") +Cc: stable@vger.kernel.org +Signed-off-by: Seth Jenkins +Acked-by: Michal Hocko + +--- + fs/proc/task_mmu.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +--- a/fs/proc/task_mmu.c ++++ b/fs/proc/task_mmu.c +@@ -876,7 +876,7 @@ static int show_smaps_rollup(struct seq_ + last_vma_end = vma->vm_end; + } + +- show_vma_header_prefix(m, priv->mm->mmap->vm_start, ++ show_vma_header_prefix(m, priv->mm->mmap ? priv->mm->mmap->vm_start : 0, + last_vma_end, 0, 0, 0, 0); + seq_pad(m, ' '); + seq_puts(m, "[rollup]\n"); diff --git a/series.conf b/series.conf index f7604f9..92d79aa 100644 --- a/series.conf +++ b/series.conf @@ -23475,6 +23475,7 @@ patches.suse/mm-inform-about-enabling-mirrored-memory.patch patches.suse/0001-Reserve-64MiB-of-CMA-for-RPi3-s-VC4.patch patches.suse/mm-Warn-users-of-node-memory-hot-remove-if-the-memory-ratio-is-a-high-risk.patch + patches.suse/smaps_rollup-fix-no-vmas-null-deref.patch ######################################################## # Filesystems