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| author | Paul Burton <paul.burton@imgtec.com> | 2015-09-22 19:26:39 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2015-10-26 09:49:46 +0100 |
| commit | f88e632480baf223cad67ac553a6729535db6d74 (patch) | |
| tree | 38c35a4b00b0d58730c3aa9f78fa158c2714228f /arch/mips/kernel | |
| parent | MIPS: Don't read GCRs when a CM is not present (diff) | |
| download | linux-f88e632480baf223cad67ac553a6729535db6d74.tar.xz linux-f88e632480baf223cad67ac553a6729535db6d74.zip | |
MIPS: Avoid buffer overrun in mips_cm_error_report
Commit 3885c2b463f6 ("MIPS: CM: Add support for reporting CM cache
errors") added cases for decoding errors reported by CM3, but leaves the
buf variable which is printed as a string uninitialised for cause values
other than 1, 2 or 3. Fix by ensuring the buf variable is initialised to
an empty string in such cases.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11187/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel')
| -rw-r--r-- | arch/mips/kernel/mips-cm.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/mips/kernel/mips-cm.c b/arch/mips/kernel/mips-cm.c index 10524ce769ae..88a8e21a51dd 100644 --- a/arch/mips/kernel/mips-cm.c +++ b/arch/mips/kernel/mips-cm.c @@ -366,6 +366,8 @@ void mips_cm_error_report(void) cm3_cmd_group[cmd_group_bits], cm3_cca_bits, 1 << mcp_bits, cm3_tr[cm3_tr_bits], sched_bit); + } else { + buf[0] = 0; } pr_err("CM_ERROR=%llx %s <%s>\n", cm_error, |