It seems nvram_pstore_info's buf_lock is not initialized before registering, which causes some strange behavior when trying to obtain the lock during kdump process.
Signed-off-by: Li Zhong <zh...@linux.vnet.ibm.com> --- arch/powerpc/platforms/pseries/nvram.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/powerpc/platforms/pseries/nvram.c b/arch/powerpc/platforms/pseries/nvram.c index 11a3b61..054a0ed 100644 --- a/arch/powerpc/platforms/pseries/nvram.c +++ b/arch/powerpc/platforms/pseries/nvram.c @@ -715,6 +715,8 @@ static int nvram_pstore_init(void) nvram_pstore_info.buf = oops_data; nvram_pstore_info.bufsize = oops_data_sz; + spin_lock_init(&nvram_pstore_info.buf_lock); + rc = pstore_register(&nvram_pstore_info); if (rc != 0) pr_err("nvram: pstore_register() failed, defaults to " _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev