Crash tool will fail to load vmcore with the following error:
#crash vmlinux /var/crash/127.0.0.1-2023-06-07-22\:03\:24/vmcore -s
crash: invalid structure size: note_buf
FILE: diskdump.c LINE: 121 FUNCTION: have_crash_notes()
[./crash] error trace: 101859ac => 10291798 => 10291450 => 10266038
10266038: SIZE_verify+156
10291450: have_crash_notes+308
10291798: map_cpus_to_prstatus_kdump_cmprs+448
101859ac: task_init+11980
The reason is that the note_buf is not intialized before using the
SIZE(note_buf) in the have_crash_notes(). Let's initialize the variable
note_buf in the ppc64_init() to fix this issue.
Fixes: db8c030857b4 ("diskdump/netdump: fix segmentation fault caused by failure of stopping CPUs")
Signed-off-by: Lianbo Jiang <lijiang@xxxxxxxxxx>
---
ppc64.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/ppc64.c b/ppc64.c
index b95a621d8fe4..ff7f0fca3a95 100644
--- a/ppc64.c
+++ b/ppc64.c
@@ -695,6 +695,7 @@ ppc64_init(int when)
}
ppc64_init_paca_info();
+ STRUCT_SIZE_INIT(note_buf, "note_buf_t");
if (!machdep->hz) {
machdep->hz = HZ;
--
2.37.1
--
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