Commit ada44a04 authored by David S. Miller's avatar David S. Miller
Browse files

sparc64: Prevent stack backtrace false positives on trap frames.



When we fully commit to returning back to kernel mode from
a trap, zero out the regs->magic value to prevent false
positives during stack backtraces.
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 14d2c68b
...@@ -363,6 +363,7 @@ kern_rtt: rdpr %canrestore, %g1 ...@@ -363,6 +363,7 @@ kern_rtt: rdpr %canrestore, %g1
brz,pn %g1, kern_rtt_fill brz,pn %g1, kern_rtt_fill
nop nop
kern_rtt_restore: kern_rtt_restore:
stw %g0, [%sp + PTREGS_OFF + PT_V9_MAGIC]
restore restore
retry retry
......
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