File Clean-up-format-data-after-a-failed-probe.patch of Package libkdumpfile.36085

From: Petr Tesarik <petr@tesarici.cz>
Date: Mon, 30 Sep 2024 09:30:16 +0200
Subject: Clean up format data after a failed probe
References: bsc#1223399
Upstream: merged
Git-commit: f191d5a982719ae0c8414af1f3ce87360613ad95

Make sure that format-specific data is cleaned up after a failed probe.

Since private data may not be even allocated at that point, the cleanup
handlers must check that the pointer is not NULL before dereferencing it.
Add this check to devmem and lkcd cleanup handlers.

Signed-off-by: Petr Tesarik <ptesarik@suse.com>
---
 src/kdumpfile/devmem.c |    3 +++
 src/kdumpfile/lkcd.c   |    3 +++
 src/kdumpfile/open.c   |    2 ++
 3 files changed, 8 insertions(+)

--- a/src/kdumpfile/devmem.c
+++ b/src/kdumpfile/devmem.c
@@ -434,6 +434,9 @@ devmem_cleanup(struct kdump_shared *shar
 {
 	struct devmem_priv *dmp = shared->fmtdata;
 
+	if (!dmp)
+		return;
+
 	if (dmp->ce) {
 		free(dmp->ce[0].data);
 		free(dmp->ce);
--- a/src/kdumpfile/lkcd.c
+++ b/src/kdumpfile/lkcd.c
@@ -1065,6 +1065,9 @@ lkcd_cleanup(struct kdump_shared *shared
 {
 	struct lkcd_priv *lkcdp = shared->fmtdata;
 
+	if (!lkcdp)
+		return;
+
 	free_level1(lkcdp->pfn_level1, lkcdp->l1_size);
 	mutex_destroy(&lkcdp->pfn_block_mutex);
 	if (lkcdp->cbuf_slot >= 0)
--- a/src/kdumpfile/open.c
+++ b/src/kdumpfile/open.c
@@ -133,6 +133,8 @@ file_fd_post_hook(kdump_ctx_t *ctx, stru
 		ret = ctx->shared->ops->probe(ctx);
 		if (ret == KDUMP_OK)
 			return kdump_open_known(ctx);
+		if (ctx->shared->ops->cleanup)
+			ctx->shared->ops->cleanup(ctx->shared);
 		if (ret != KDUMP_NOPROBE)
 			return ret;