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| author |   Kalesh Singh <kaleshsingh@google.com> | 2022-07-26 00:37:37 -0700 |
|---|---|---|
| committer |   Marc Zyngier <maz@kernel.org> | 2022-07-26 10:48:32 +0100 |
| commit | 5b1b08619f50422c3e43d1fd7af257595a9e4a67 (patch) | |
| tree | 52d759cc999a69530c2efec5e64b9d6613e62fe5 /arch/arm64/kernel/stacktrace.c | |
| parent | arm64: stacktrace: Factor out unwind_next_common() (diff) | |
| download | linux-dev-5b1b08619f50422c3e43d1fd7af257595a9e4a67.tar.xz linux-dev-5b1b08619f50422c3e43d1fd7af257595a9e4a67.zip | |
arm64: stacktrace: Handle frame pointer from different address spaces
The unwinder code is made reusable so that it can be used to
unwind various types of stacks. One usecase is unwinding the
nVHE hyp stack from the host (EL1) in non-protected mode. This
means that the unwinder must be able to translate HYP stack
addresses to kernel addresses.
Add a callback (stack_trace_translate_fp_fn) to allow specifying
the translation function.
Signed-off-by: Kalesh Singh <kaleshsingh@google.com>
Reviewed-by: Fuad Tabba <tabba@google.com>
Tested-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220726073750.3219117-5-kaleshsingh@google.com
Diffstat (limited to 'arch/arm64/kernel/stacktrace.c')
| -rw-r--r-- | arch/arm64/kernel/stacktrace.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/kernel/stacktrace.c b/arch/arm64/kernel/stacktrace.c index 834851939364..eef3cf6bf2d7 100644 --- a/arch/arm64/kernel/stacktrace.c +++ b/arch/arm64/kernel/stacktrace.c @@ -87,7 +87,7 @@ static int notrace unwind_next(struct unwind_state *state) if (fp == (unsigned long)task_pt_regs(tsk)->stackframe) return -ENOENT; - err = unwind_next_common(state, &info); + err = unwind_next_common(state, &info, NULL); if (err) return err; |