are you sure this is fixed: https://github.com/torvalds/linux/commit/1b7e816fc80e668f0ccc8542cec20b9259abace1
I don't seem to be able to download the exact kernel source for 5.4.0-72. Synaptic shows one but that only installs the /usr/share/doc files and no kernel source. I downloaded one from here: https://packages.ubuntu.com/focal-updates/all/linux-source-5.4.0/download In that one slub.c is not fixed, the zero initialization has not been added: 1456 static inline bool slab_free_freelist_hook(struct kmem_cache *s, 1457 void **head, void **tail) 1458 { 1459 1460 void *object; 1461 void *next = *head; 1462 void *old_tail = *tail ? *tail : *head; 1463 int rsize; 1464 1465 /* Head and tail of the reconstructed freelist */ 1466 *head = NULL; 1467 *tail = NULL; 1468 1469 do { 1470 object = next; 1471 next = get_freepointer(s, object); 1472 1473 if (slab_want_init_on_free(s)) { 1474 /* 1475 * Clear the object and the metadata, but don't touch 1476 * the redzone. 1477 */ 1478 memset(object, 0, s->object_size); 1479 rsize = (s->flags & SLAB_RED_ZONE) ? s->red_left_pad 1480 : 0; 1481 memset((char *)object + s->inuse, 0, 1482 s->size - s->inuse - rsize); 1483 1484 } 1485 /* If object's reuse doesn't have to be delayed */ 1486 if (!slab_free_hook(s, object)) { 1487 /* Move object to the new freelist */ 1488 set_freepointer(s, object, *head); 1489 *head = object; 1490 if (!*tail) 1491 *tail = object; 1492 } 1493 } while (object != old_tail); 1494 1495 if (*head == *tail) 1496 *tail = NULL; 1497 1498 return *head != NULL; 1499 } 1500 .... may not be what is actually running since none of the standard installation methods offers the real kernel source for 72 ... What happened, especially looking at some corruption that seems to have happened, might be the wrong slabs were messed with Q is to me how often did that happen without showing a symptom.... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1926935 Title: just becomes a veggie after invalid opcode: 0000 in mm/slub.c:306 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/rtl8821ce-dkms/+bug/1926935/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
