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| author | Paul Burton <paul.burton@imgtec.com> | 2017-09-09 01:12:21 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-10-18 10:38:27 +0300 |
| commit | 6478e2712afff59d873197a08f6a1398dd2d2c82 (patch) | |
| tree | bc524b50a245222aa59dcd8f22d0ae897fb564cc /arch | |
| parent | 153e9470d5037340561dd1a94f68881b5edd61e9 (diff) | |
| download | linux-6478e2712afff59d873197a08f6a1398dd2d2c82.tar.xz | |
MIPS: math-emu: Remove pr_err() calls from fpu_emu()
commit ca8eb05b5f332a9e1ab3e2ece498d49f4d683470 upstream.
The FPU emulator includes 2 calls to pr_err() which are triggered by
invalid instruction encodings for MIPSr6 cmp.cond.fmt instructions.
These cases are not kernel errors, merely invalid instructions which are
already handled by delivering a SIGILL which will provide notification
that something failed in cases where that makes sense.
In cases where that SIGILL is somewhat expected & being handled, for
example when crashme happens to generate one of the affected bad
encodings, the message is printed with no useful context about what
triggered it & spams the kernel log for no good reason.
Remove the pr_err() calls to make crashme run silently & treat the bad
encodings the same way we do others, with a SIGILL & no further kernel
log output.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Fixes: f8c3c6717a71 ("MIPS: math-emu: Add support for the CMP.condn.fmt R6 instruction")
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17253/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/math-emu/cp1emu.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/mips/math-emu/cp1emu.c b/arch/mips/math-emu/cp1emu.c index f08a7b4facb9..4f0a1a6f7589 100644 --- a/arch/mips/math-emu/cp1emu.c +++ b/arch/mips/math-emu/cp1emu.c @@ -2387,7 +2387,6 @@ dcopuop: break; default: /* Reserved R6 ops */ - pr_err("Reserved MIPS R6 CMP.condn.S operation\n"); return SIGILL; } } @@ -2461,7 +2460,6 @@ dcopuop: break; default: /* Reserved R6 ops */ - pr_err("Reserved MIPS R6 CMP.condn.D operation\n"); return SIGILL; } } |