forked from rpms/glibc
24 lines
845 B
Diff
24 lines
845 B
Diff
Downstream-only patch from Mark Wielaard <mjw@redhat.com> to avoid a
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crash in backtrace if the vDSO is not available.
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Upstream, this code was removed in commit 82fd7314c7df8c5555dce02
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("powerpc: Remove backtrace implementation"), so patch is not needed
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there.
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diff --git a/sysdeps/powerpc/powerpc64/backtrace.c b/sysdeps/powerpc/powerpc64/backtrace.c
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index 37de9b5bdd73c316..0ffa7509dfa4862a 100644
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--- a/sysdeps/powerpc/powerpc64/backtrace.c
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+++ b/sysdeps/powerpc/powerpc64/backtrace.c
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@@ -68,8 +68,9 @@ static inline bool
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is_sigtramp_address (void *nip)
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{
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#ifdef HAVE_SIGTRAMP_RT64
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- if (nip == GLRO (dl_vdso_sigtramp_rt64) ||
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- nip == GLRO (dl_vdso_sigtramp_rt64) + 4)
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+ if ((nip == GLRO (dl_vdso_sigtramp_rt64) ||
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+ nip == GLRO (dl_vdso_sigtramp_rt64) + 4)
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+ && nip != NULL)
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return true;
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#endif
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return false;
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