Since, the panic handlers may require certain cpus to be online to panic gracefully, we should call them before turning off SMP. Without this re-ordering, on Hyper-V hv_panic_vmbus_unload() times out, because the vmbus channel is bound to VMBUS_CONNECT_CPU and unless the crashing cpu is the same as VMBUS_CONNECT_CPU, VMBUS_CONNECT_CPU will be offlined by crash_smp_send_stop() before the vmbus channel can be deconstructed.
Signed-off-by: Hamza Mahfooz <[email protected]> --- kernel/panic.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/panic.c b/kernel/panic.c index fbc59b3b64d0..9712a46dfe27 100644 --- a/kernel/panic.c +++ b/kernel/panic.c @@ -372,8 +372,6 @@ void panic(const char *fmt, ...) if (!_crash_kexec_post_notifiers) __crash_kexec(NULL); - panic_other_cpus_shutdown(_crash_kexec_post_notifiers); - printk_legacy_allow_panic_sync(); /* @@ -382,6 +380,8 @@ void panic(const char *fmt, ...) */ atomic_notifier_call_chain(&panic_notifier_list, 0, buf); + panic_other_cpus_shutdown(_crash_kexec_post_notifiers); + panic_print_sys_info(false); kmsg_dump_desc(KMSG_DUMP_PANIC, buf); -- 2.47.1
