Re: [Crash-utility] [PATCH] x86_64: Add support for new divide_error name

-----Original Message----- > Upstream kernel commit 9d06c4027f21 ("x86/entry: Convert Divide Error to IDTENTRY") > renamed divide_error handler to asm_exc_divide_error. This breaks kaslr > offser derivation when we crash tries to open a qemu image dump. Fix it > by also checking symbols for the presence of the new name. > > Signed-off-by: Nikolay Borisov <nborisov(a)suse.com&gt; Thank you for catching this. The divide_error way would be rarely used with Alexey's patchset, but it's still there. I've tested this patch with a 5.9 kernel.

Acked-by: Kazuhito Hagio <k-hagio-ab(a)nec.com&gt; (I will add "Linux 5.8 and later" to the commit message.) Thanks, Kazu > --- > symbols.c | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) > > diff --git a/symbols.c b/symbols.c > index 70b1455750ee..e3594ce0ed48 100644 > --- a/symbols.c > +++ b/symbols.c > @@ -12711,9 +12711,11 @@ numeric_forward(const void *P_x, const void *P_y) > > if (SADUMP_DUMPFILE() || QEMU_MEM_DUMP_NO_VMCOREINFO() || VMSS_DUMPFILE()) { > /* Need for kaslr_offset and phys_base */ > - if (STREQ(x->name, "divide_error")) > + if (STREQ(x->name, "divide_error") || > + STREQ(x->name, "asm_exc_divide_error")) > st->divide_error_vmlinux = valueof(x); > - else if (STREQ(y->name, "divide_error")) > + else if (STREQ(y->name, "divide_error") || > + STREQ(y->name, "asm_exc_divide_error")) > st->divide_error_vmlinux = valueof(y); > > if (STREQ(x->name, "idt_table")) > -- > 2.25.1 > > > -- > Crash-utility mailing list > Crash-utility(a)redhat.com > https://www.redhat.com/mailman/listinfo/crash-utility