journal: Skip data objects with invalid offsets

We already skip invalid objects, but don't yet skip invalid offsets.
Let's skip these as well to improve robustness when we're dealing with
corrupted journals.

Before:

```
➜  systemd git:(main) build/journalctl -r -n 5 --file ~/Downloads/system@0005d2b275abaaf8-f243a2818cb39b98.journal_
Failed to get journal fields: Cannot assign requested address
-- No entries --
```

After:

```
➜  systemd git:(main) ✗ build/journalctl -r -n 5 --file ~/Downloads/system@0005d2b275abaaf8-f243a2818cb39b98.journal_
Dec 09 08:32:38 snowball3 NetworkManager[911]: <info>  [1639038758.1464] device (wlp1s0): supplicant interface state: scanning -> authenticating
Dec 09 08:32:38 snowball3 kernel: wlp1s0: send auth to ec:a9:40:79:fb:ad (try 1/3)
Dec 09 08:32:38 snowball3 kernel: wlp1s0: authenticate with ec:a9:40:79:fb:ad
Dec 09 08:32:38 snowball3 wpa_supplicant[1003]: wlp1s0: SME: Trying to authenticate with ec:a9:40:79:fb:ad (SSID='UPC949397B' freq=5500 MHz)
```

(cherry picked from commit df207ccb7be02b1ca6bdd0a2066a898e5b24ee86)

diff --git a/src/libsystemd/sd-journal/sd-journal.c b/src/libsystemd/sd-journal/sd-journal.c
index f51ecbfc53d43435a1b00eae0879296b477c7dfd..4a46b7f4fbad25a9c6b83aec98da4553e9607c6e 100644 (file)
--- a/src/libsystemd/sd-journal/sd-journal.c
+++ b/src/libsystemd/sd-journal/sd-journal.c
@@ -2303,8 +2303,8 @@ _public_ int sd_journal_get_data(sd_journal *j, const char *field, const void **
                 p = le64toh(o->entry.items[i].object_offset);
                 le_hash = o->entry.items[i].hash;
                 r = journal_file_move_to_object(f, OBJECT_DATA, p, &d);
-                if (r == -EBADMSG) {
-                        log_debug("Entry item %"PRIu64" data object is bad, skipping over it.", i);
+                if (IN_SET(r, -EADDRNOTAVAIL, -EBADMSG)) {
+                        log_debug_errno(r, "Entry item %"PRIu64" data object is bad, skipping over it: %m", i);
                         continue;
                 }
                 if (r < 0)
@@ -2448,8 +2448,8 @@ _public_ int sd_journal_enumerate_data(sd_journal *j, const void **data, size_t
                 p = le64toh(o->entry.items[j->current_field].object_offset);
                 le_hash = o->entry.items[j->current_field].hash;
                 r = journal_file_move_to_object(f, OBJECT_DATA, p, &o);
-                if (r == -EBADMSG) {
-                        log_debug("Entry item %"PRIu64" data object is bad, skipping over it.", j->current_field);
+                if (IN_SET(r, -EADDRNOTAVAIL, -EBADMSG)) {
+                        log_debug_errno(r, "Entry item %"PRIu64" data object is bad, skipping over it: %m", j->current_field);
                         continue;
                 }
                 if (r < 0)