diff options
| author | John Stultz <jstultz@google.com> | 2022-12-21 05:18:55 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-12-31 13:14:45 +0100 |
| commit | 2cd365029c23b0bc529e1c516b6e3f39973b4d20 (patch) | |
| tree | 4f700718e056d5bf5e2ab2b5ae3e2bd927a819d8 /fs/pstore | |
| parent | 2068d41a3de9132ab39ac82e292ae089bf9bb4ab (diff) | |
pstore: Make sure CONFIG_PSTORE_PMSG selects CONFIG_RT_MUTEXES
[ Upstream commit 2f4fec5943407318b9523f01ce1f5d668c028332 ]
In commit 76d62f24db07 ("pstore: Switch pmsg_lock to an rt_mutex
to avoid priority inversion") I changed a lock to an rt_mutex.
However, its possible that CONFIG_RT_MUTEXES is not enabled,
which then results in a build failure, as the 0day bot detected:
https://lore.kernel.org/linux-mm/202212211244.TwzWZD3H-lkp@intel.com/
Thus this patch changes CONFIG_PSTORE_PMSG to select
CONFIG_RT_MUTEXES, which ensures the build will not fail.
Cc: Wei Wang <wvw@google.com>
Cc: Midas Chien<midaschieh@google.com>
Cc: Connor O'Brien <connoro@google.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Anton Vorontsov <anton@enomsg.org>
Cc: Colin Cross <ccross@android.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: kernel test robot <lkp@intel.com>
Cc: kernel-team@android.com
Fixes: 76d62f24db07 ("pstore: Switch pmsg_lock to an rt_mutex to avoid priority inversion")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: John Stultz <jstultz@google.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20221221051855.15761-1-jstultz@google.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'fs/pstore')
| -rw-r--r-- | fs/pstore/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/pstore/Kconfig b/fs/pstore/Kconfig index 8adabde685f1..c49d554cc9ae 100644 --- a/fs/pstore/Kconfig +++ b/fs/pstore/Kconfig @@ -126,6 +126,7 @@ config PSTORE_CONSOLE config PSTORE_PMSG bool "Log user space messages" depends on PSTORE + select RT_MUTEXES help When the option is enabled, pstore will export a character interface /dev/pmsg0 to log user space messages. On reboot |