qemu-e2k/subprojects
David Hildenbrand 52767e1063 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>
2024-03-12 17:56:55 -04:00
..
libvduse
libvhost-user libvhost-user: Mark mmap'ed region memory as MADV_DONTDUMP 2024-03-12 17:56:55 -04:00
packagefiles
.gitignore
berkeley-softfloat-3.wrap
berkeley-testfloat-3.wrap
dtc.wrap
keycodemapdb.wrap
libblkio.wrap
libvfio-user.wrap
slirp.wrap