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 task_init() to fix this issue. Fixes: db8c030857b4 ("diskdump/netdump: fix segmentation fault caused by failure of stopping CPUs") Signed-off-by: Lianbo Jiang <lijiang(a)redhat.com&gt; --- task.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/task.c b/task.c index 88941c7b0e4d..2b7467b4193d 100644 --- a/task.c +++ b/task.c @@ -675,6 +675,9 @@ task_init(void) tt->this_task = pid_to_task(active_pid); } else { + if (INVALID_SIZE(note_buf)) + STRUCT_SIZE_INIT(note_buf, "note_buf_t"); + if (KDUMP_DUMPFILE()) map_cpus_to_prstatus(); else if (ELF_NOTES_VALID() && DISKDUMP_DUMPFILE()) -- 2.37.1