Messages in this thread | | | Date | Thu, 13 Feb 2020 07:01:56 -0800 | From | Greg Kroah-Hartman <> | Subject | Re: [PATCH-4.19-stable 0/2] Backport ENCODE_FRAME_POINTER hint |
| |
On Mon, Feb 10, 2020 at 02:05:41PM +0000, Dmitry Safonov wrote: > On 4.19.93 the following warning was observed with CONFIG_FRAME_POINTER: > > WARNING: kernel stack frame pointer at 00000000bceb5183 in Coronavirus:3282 has bad value (null) > > unwind stack type:0 next_sp: (null) mask:0x2 graph_idx:0 > > 000000009630aa47: ffffc9000126fdb0 (0xffffc9000126fdb0) > > 0000000020360f53: ffffffff81038e33 (__save_stack_trace+0xcb/0xee) > > 00000000675081f2: 0000000000000000 ... > > 0000000043198fe7: ffffc9000126c000 (0xffffc9000126c000) > > 0000000008a46231: ffffc90001270000 (0xffffc90001270000) > [..] > > It turns to be missing %rbp hint was making frame pointer unwinder > a bit tipsy. > The observed is WARN_ONCE(), so it one time per boot, but imho, worth to > have in stable too.
All now queued up, thanks!
greg k-h
| |