Re: [PATCH] x86/unwind/fp: Fix FP unwinding in ret_from_fork

2020-09-15 Thread peterz
On Mon, Sep 14, 2020 at 12:04:22PM -0500, Josh Poimboeuf wrote: > There have been some reports of "bad bp value" warnings printed by the > frame pointer unwinder: > > WARNING: kernel stack regs at 5bac7112 in sh:1014 has bad 'bp' > value > > This warning happens when u

[PATCH] x86/unwind/fp: Fix FP unwinding in ret_from_fork

2020-09-14 Thread Josh Poimboeuf
There have been some reports of "bad bp value" warnings printed by the frame pointer unwinder: WARNING: kernel stack regs at 5bac7112 in sh:1014 has bad 'bp' value This warning happens when unwinding from an interrupt in ret_from_fork(). If entry code gets interrupted