Fatal x86 oopses can call crash_kexec() without reaching panic(). Run the pre-kdump chain from __crash_kexec() as well, after finding a loaded image under the kexec lock and capturing the original registers.
This covers direct crash entry without moving all panic notifiers ahead of kdump. A missing image or failed trylock leaves callbacks uncalled; the shared guard skips callbacks already invoked by panic(). Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Zack Rusin <[email protected]> --- New in v2: cover direct crash-kexec entry in a separate core patch. kernel/crash_core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/crash_core.c b/kernel/crash_core.c index 2b36aa9fade0..5d9fe9e00f39 100644 --- a/kernel/crash_core.c +++ b/kernel/crash_core.c @@ -23,6 +23,7 @@ #include <linux/objtool.h> #include <linux/delay.h> #include <linux/panic.h> +#include <linux/panic_notifier.h> #include <asm/page.h> #include <asm/sections.h> @@ -139,6 +140,7 @@ void __noclone __crash_kexec(struct pt_regs *regs) struct pt_regs fixed_regs; crash_setup_regs(&fixed_regs, regs); + panic_notify_pre_kdump(NULL); crash_save_vmcoreinfo(); machine_crash_shutdown(&fixed_regs); crash_cma_clear_pending_dma();
