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| author | Josh Poimboeuf <jpoimboe@redhat.com> | 2017-09-18 21:43:37 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-12-25 14:26:13 +0100 |
| commit | 5d5e60c80fd8613b8a76876b3ffd357f7a0bf7e7 (patch) | |
| tree | c1ed6ce9b6e04266f0105cf11bea48e977b1108e /drivers/acpi/apei | |
| parent | d074a1075f6a123e3f9c5fdbac7eea4c1006e03b (diff) | |
| download | linux-rt-5d5e60c80fd8613b8a76876b3ffd357f7a0bf7e7.tar.gz | |
x86/head: Add unwind hint annotations
commit 2704fbb672d0d9a19414907fda7949283dcef6a1 upstream.
Jiri Slaby reported an ORC issue when unwinding from an idle task. The
stack was:
ffffffff811083c2 do_idle+0x142/0x1e0
ffffffff8110861d cpu_startup_entry+0x5d/0x60
ffffffff82715f58 start_kernel+0x3ff/0x407
ffffffff827153e8 x86_64_start_kernel+0x14e/0x15d
ffffffff810001bf secondary_startup_64+0x9f/0xa0
The ORC unwinder errored out at secondary_startup_64 because the head
code isn't annotated yet so there wasn't a corresponding ORC entry.
Fix that and any other head-related unwinding issues by adding unwind
hints to the head code.
Reported-by: Jiri Slaby <jslaby@suse.cz>
Tested-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/78ef000a2f68f545d6eef44ee912edceaad82ccf.1505764066.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/acpi/apei')
0 files changed, 0 insertions, 0 deletions