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| author | David Hildenbrand <david@redhat.com> | 2024-02-14 16:17:01 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2024-03-12 17:56:55 -0400 |
| commit | 52767e1063beaa17d59c739efd0b9c342923929d (patch) | |
| tree | 4e1bc37c960c59da5f9aecb07b0b14f07545839e /hw/net/virtio-net.c | |
| parent | 67f4f663cd6179d57f3e5a558f1526c7dc8c6742 (diff) | |
| download | qemu-52767e1063beaa17d59c739efd0b9c342923929d.zip qemu-52767e1063beaa17d59c739efd0b9c342923929d.tar.gz qemu-52767e1063beaa17d59c739efd0b9c342923929d.tar.bz2 | |
libvhost-user: Mark mmap'ed region memory as MADV_DONTDUMP
We already use MADV_NORESERVE to deal with sparse memory regions. Let's
also set madvise(MADV_DONTDUMP), otherwise a crash of the process can
result in us allocating all memory in the mmap'ed region for dumping
purposes.
This change implies that the mmap'ed rings won't be included in a
coredump. If ever required for debugging purposes, we could mark only
the mapped rings MADV_DODUMP.
Ignore errors during madvise() for now.
Reviewed-by: Raphael Norwitz <raphael@enfabrica.net>
Acked-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20240214151701.29906-15-david@redhat.com>
Tested-by: Mario Casquero <mcasquer@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/net/virtio-net.c')
0 files changed, 0 insertions, 0 deletions