Re: [Crash-utility] [PATCH] Fix for "bt" command prints a bogus warning

more important thing is how we determine the irq_eframe_link. > > The following patch can work on upstream kernel vmcore and RHEL9 vmcore. Maybe we can check the symbols asm_common_interrupt and asm_call_on_stack as below: diff --git a/x86_64.c b/x86_64.c index 7a5d6f050c89..62036f71f632 100644 --- a/x86_64.c +++ b/x86_64.c @@ -3938,6 +3938,11 @@ in_exception_stack: if (irq_eframe) { bt->flags |= BT_EXCEPTION_FRAME; i = (irq_eframe - bt->stackbase)/sizeof(ulong); + if (symbol_exists("asm_common_interrupt")) { + i -= 1; + up = (ulong *)(&bt->stackbuf[i*sizeof(ulong)]); + bt->instptr = *up; + } x86_64_print_stack_entry(bt, ofp, level, i, bt->instptr); bt->flags &= ~(ulonglong)BT_EXCEPTION_FRAME; cs = x86_64_exception_frame(EFRAME_PRINT|EFRAME_CS, 0, @@ -6521,6 +6526,16 @@ x86_64_irq_eframe_link_init(void) else return; + if (symbol_exists("asm_common_interrupt") && !symbol_exists("asm_call_on_stack")) { + machdep->machspec->irq_eframe_link =-32; + return; + } + + if (symbol_exists("asm_common_interrupt") && symbol_exists("asm_call_on_stack")) { + machdep->machspec->irq_eframe_link =-56; + return; + } + if (THIS_KERNEL_VERSION < LINUX(2,6,9)) return;