| commit | 8a37f520523df971bd3f926d8bd45ead37e857e8 | |
| author | Paul Mundt <lethal@linux-sh.org> | |
| Tue, 25 May 2010 07:16:40 +0000 (25 16:16 +0900) | ||
| committer | Paul Mundt <lethal@linux-sh.org> | |
| Tue, 25 May 2010 07:16:40 +0000 (25 16:16 +0900) | ||
| tree | 762b79bb60c55ef320ec72fdf7c079fa14cb765b | treesnapshot (tar.gz zip) |
| parent | e1f42ff4f06e5feaa57a22556ad977ef62164e14 | commitdiff |
sh: handle early calls to return_address() when using dwarf unwinder.
The dwarf unwinder ties in to an early initcall, but it's possible that
return_address() calls will be made prior to that. This implements some
additional error handling in to the dwarf unwinder as well as an exit
path in the return_address() case to bail out if the unwinder hasn't come
up yet.
This fixes a NULL pointer deref in early boot when mempool_alloc() blows
up on the not-yet-ready mempool via dwarf_unwind_stack().
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
The dwarf unwinder ties in to an early initcall, but it's possible that
return_address() calls will be made prior to that. This implements some
additional error handling in to the dwarf unwinder as well as an exit
path in the return_address() case to bail out if the unwinder hasn't come
up yet.
This fixes a NULL pointer deref in early boot when mempool_alloc() blows
up on the not-yet-ready mempool via dwarf_unwind_stack().
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| arch/sh/kernel/dwarf.c | diffblobblamehistory | |
| arch/sh/kernel/return_address.c | diffblobblamehistory |