| Message ID | 20210906072020.14181-1-krzysztof.kozlowski@canonical.com |
|---|---|
| State | New |
| Headers | show |
| Series | [I/oracle] UBUNTU: [Config] oracle: Disable KCSAN | expand |
On Mon, Sep 06, 2021 at 09:20:20AM +0200, Krzysztof Kozlowski wrote: > KCSAN reports several data-races when booted on Oracle instances (and on > other kernels as well). There are around 100 reports during boot, like: > > BUG: KCSAN: data-race in __mutex_lock.constprop.0+0xd0/0x750 > BUG: KCSAN: data-race in osq_lock / osq_lock > BUG: KCSAN: data-race in tick_nohz_next_event / tick_nohz_stop_tick > > Since main kernel has KCSAN disabled, remove it also from derivative. > > Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> It's always a good thing to re-align config options with the main kernel, therefore: Acked-by: Andrea Righi <andrea.righi@canonical.com> > --- > debian.oracle/config/config.common.ubuntu | 17 +---------------- > 1 file changed, 1 insertion(+), 16 deletions(-) > > diff --git a/debian.oracle/config/config.common.ubuntu b/debian.oracle/config/config.common.ubuntu > index 89078f0655e7..22d256de537f 100644 > --- a/debian.oracle/config/config.common.ubuntu > +++ b/debian.oracle/config/config.common.ubuntu > @@ -4447,22 +4447,7 @@ CONFIG_KARMA_PARTITION=y > # CONFIG_KASAN is not set > CONFIG_KCMP=y > # CONFIG_KCOV is not set > -CONFIG_KCSAN=y > -CONFIG_KCSAN_ASSUME_PLAIN_WRITES_ATOMIC=y > -# CONFIG_KCSAN_DEBUG is not set > -CONFIG_KCSAN_DELAY_RANDOMIZE=y > -CONFIG_KCSAN_EARLY_ENABLE=y > -# CONFIG_KCSAN_IGNORE_ATOMICS is not set > -# CONFIG_KCSAN_INTERRUPT_WATCHER is not set > -CONFIG_KCSAN_NUM_WATCHPOINTS=64 > -CONFIG_KCSAN_REPORT_ONCE_IN_MS=3000 > -CONFIG_KCSAN_REPORT_RACE_UNKNOWN_ORIGIN=y > -CONFIG_KCSAN_REPORT_VALUE_CHANGE_ONLY=y > -CONFIG_KCSAN_SELFTEST=y > -CONFIG_KCSAN_SKIP_WATCH=4000 > -CONFIG_KCSAN_SKIP_WATCH_RANDOMIZE=y > -CONFIG_KCSAN_UDELAY_INTERRUPT=20 > -CONFIG_KCSAN_UDELAY_TASK=80 > +# CONFIG_KCSAN is not set > CONFIG_KDB_CONTINUE_CATASTROPHIC=0 > CONFIG_KDB_DEFAULT_ENABLE=0x1 > CONFIG_KDB_KEYBOARD=y > -- > 2.30.2 > > > -- > kernel-team mailing list > kernel-team@lists.ubuntu.com > https://lists.ubuntu.com/mailman/listinfo/kernel-team
On 06.09.21 09:20, Krzysztof Kozlowski wrote: > KCSAN reports several data-races when booted on Oracle instances (and on > other kernels as well). There are around 100 reports during boot, like: > > BUG: KCSAN: data-race in __mutex_lock.constprop.0+0xd0/0x750 > BUG: KCSAN: data-race in osq_lock / osq_lock > BUG: KCSAN: data-race in tick_nohz_next_event / tick_nohz_stop_tick > > Since main kernel has KCSAN disabled, remove it also from derivative. > > Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Acked-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com> Thanks > --- > debian.oracle/config/config.common.ubuntu | 17 +---------------- > 1 file changed, 1 insertion(+), 16 deletions(-) > > diff --git a/debian.oracle/config/config.common.ubuntu b/debian.oracle/config/config.common.ubuntu > index 89078f0655e7..22d256de537f 100644 > --- a/debian.oracle/config/config.common.ubuntu > +++ b/debian.oracle/config/config.common.ubuntu > @@ -4447,22 +4447,7 @@ CONFIG_KARMA_PARTITION=y > # CONFIG_KASAN is not set > CONFIG_KCMP=y > # CONFIG_KCOV is not set > -CONFIG_KCSAN=y > -CONFIG_KCSAN_ASSUME_PLAIN_WRITES_ATOMIC=y > -# CONFIG_KCSAN_DEBUG is not set > -CONFIG_KCSAN_DELAY_RANDOMIZE=y > -CONFIG_KCSAN_EARLY_ENABLE=y > -# CONFIG_KCSAN_IGNORE_ATOMICS is not set > -# CONFIG_KCSAN_INTERRUPT_WATCHER is not set > -CONFIG_KCSAN_NUM_WATCHPOINTS=64 > -CONFIG_KCSAN_REPORT_ONCE_IN_MS=3000 > -CONFIG_KCSAN_REPORT_RACE_UNKNOWN_ORIGIN=y > -CONFIG_KCSAN_REPORT_VALUE_CHANGE_ONLY=y > -CONFIG_KCSAN_SELFTEST=y > -CONFIG_KCSAN_SKIP_WATCH=4000 > -CONFIG_KCSAN_SKIP_WATCH_RANDOMIZE=y > -CONFIG_KCSAN_UDELAY_INTERRUPT=20 > -CONFIG_KCSAN_UDELAY_TASK=80 > +# CONFIG_KCSAN is not set > CONFIG_KDB_CONTINUE_CATASTROPHIC=0 > CONFIG_KDB_DEFAULT_ENABLE=0x1 > CONFIG_KDB_KEYBOARD=y >
On 06/09/2021 09:20, Krzysztof Kozlowski wrote: > KCSAN reports several data-races when booted on Oracle instances (and on > other kernels as well). There are around 100 reports during boot, like: > > BUG: KCSAN: data-race in __mutex_lock.constprop.0+0xd0/0x750 > BUG: KCSAN: data-race in osq_lock / osq_lock > BUG: KCSAN: data-race in tick_nohz_next_event / tick_nohz_stop_tick > > Since main kernel has KCSAN disabled, remove it also from derivative. > > Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> > --- > debian.oracle/config/config.common.ubuntu | 17 +---------------- > 1 file changed, 1 insertion(+), 16 deletions(-) > Applied Best regards, Krzysztof
diff --git a/debian.oracle/config/config.common.ubuntu b/debian.oracle/config/config.common.ubuntu index 89078f0655e7..22d256de537f 100644 --- a/debian.oracle/config/config.common.ubuntu +++ b/debian.oracle/config/config.common.ubuntu @@ -4447,22 +4447,7 @@ CONFIG_KARMA_PARTITION=y # CONFIG_KASAN is not set CONFIG_KCMP=y # CONFIG_KCOV is not set -CONFIG_KCSAN=y -CONFIG_KCSAN_ASSUME_PLAIN_WRITES_ATOMIC=y -# CONFIG_KCSAN_DEBUG is not set -CONFIG_KCSAN_DELAY_RANDOMIZE=y -CONFIG_KCSAN_EARLY_ENABLE=y -# CONFIG_KCSAN_IGNORE_ATOMICS is not set -# CONFIG_KCSAN_INTERRUPT_WATCHER is not set -CONFIG_KCSAN_NUM_WATCHPOINTS=64 -CONFIG_KCSAN_REPORT_ONCE_IN_MS=3000 -CONFIG_KCSAN_REPORT_RACE_UNKNOWN_ORIGIN=y -CONFIG_KCSAN_REPORT_VALUE_CHANGE_ONLY=y -CONFIG_KCSAN_SELFTEST=y -CONFIG_KCSAN_SKIP_WATCH=4000 -CONFIG_KCSAN_SKIP_WATCH_RANDOMIZE=y -CONFIG_KCSAN_UDELAY_INTERRUPT=20 -CONFIG_KCSAN_UDELAY_TASK=80 +# CONFIG_KCSAN is not set CONFIG_KDB_CONTINUE_CATASTROPHIC=0 CONFIG_KDB_DEFAULT_ENABLE=0x1 CONFIG_KDB_KEYBOARD=y
KCSAN reports several data-races when booted on Oracle instances (and on other kernels as well). There are around 100 reports during boot, like: BUG: KCSAN: data-race in __mutex_lock.constprop.0+0xd0/0x750 BUG: KCSAN: data-race in osq_lock / osq_lock BUG: KCSAN: data-race in tick_nohz_next_event / tick_nohz_stop_tick Since main kernel has KCSAN disabled, remove it also from derivative. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> --- debian.oracle/config/config.common.ubuntu | 17 +---------------- 1 file changed, 1 insertion(+), 16 deletions(-)