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cr-dump: fix error handling

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Commit "plugin: Add DUMP_DEVICES_LATE callback" introduced a new plugin
callback that is invoked in cr_dump_tasks(). The return value of this
callback was assigned to the variable ret. However, this variable is later
used as the return value when goto err is triggered in subsequent
conditions. As a result, CRIU exits with "Dumping finished successfully" even
when some actions have failed and inventory.img has not been created.

To fix this, we replace ret with exit_code and use it only when it is
actually needed.

Signed-off-by: Radostin Stoyanov <rstoyanov@fedoraproject.org>
This commit is contained in:
Radostin Stoyanov 2025-12-09 19:26:03 +00:00
parent f78bea8d34
commit 8f8e383ada
1 changed files with 14 additions and 21 deletions
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35
criu/cr-dump.c
View file

@ -2138,8 +2138,8 @@ int cr_dump_tasks(pid_t pid)
InventoryEntry he = INVENTORY_ENTRY__INIT;
InventoryEntry *parent_ie = NULL;
struct pstree_item *item;
int pre_dump_ret = 0;
int ret = -1;
int ret;
int exit_code = -1;
kerndat_warn_about_madv_guards();
@ -2159,9 +2159,9 @@ int cr_dump_tasks(pid_t pid)
goto err;
root_item->pid->real = pid;
pre_dump_ret = run_scripts(ACT_PRE_DUMP);
if (pre_dump_ret != 0) {
pr_err("Pre dump script failed with %d!\n", pre_dump_ret);
ret = run_scripts(ACT_PRE_DUMP);
if (ret != 0) {
pr_err("Pre dump script failed with %d!\n", ret);
goto err;
}
if (init_stats(DUMP_STATS))
@ -2287,39 +2287,32 @@ int cr_dump_tasks(pid_t pid)
* ipc shared memory, but an ipc namespace is dumped in a child
* process.
*/
ret = cr_dump_shmem();
if (ret)
if (cr_dump_shmem())
goto err;
if (root_ns_mask) {
ret = dump_namespaces(root_item, root_ns_mask);
if (ret)
if (dump_namespaces(root_item, root_ns_mask))
goto err;
}
if ((root_ns_mask & CLONE_NEWTIME) == 0) {
ret = dump_time_ns(0);
if (ret)
if (dump_time_ns(0))
goto err;
}
if (dump_aa_namespaces() < 0)
goto err;
ret = dump_cgroups();
if (ret)
if (dump_cgroups())
goto err;
ret = fix_external_unix_sockets();
if (ret)
if (fix_external_unix_sockets())
goto err;
ret = tty_post_actions();
if (ret)
if (tty_post_actions())
goto err;
ret = inventory_save_uptime(&he);
if (ret)
if (inventory_save_uptime(&he))
goto err;
he.has_pre_dump_mode = false;
@ -2328,10 +2321,10 @@ int cr_dump_tasks(pid_t pid)
he.allow_uprobes = true;
}
ret = write_img_inventory(&he);
exit_code = write_img_inventory(&he);
err:
if (parent_ie)
inventory_entry__free_unpacked(parent_ie, NULL);
return cr_dump_finish(ret);
return cr_dump_finish(exit_code);
}