Aborting on SCLP READ SCP INFO error leads to a deadloop. The loop is: abort() -> exit() -> smp_teardown() -> smp_query_num_cpus() -> sclp_get_cpu_num() -> assert() -> abort() Since smp_setup() is done after sclp_read_info() inside setup() this loop only happens when only the start processor is running. Let sclp_get_cpu_num() return 1 in this case. Also implement the SCLP_RC_INSUFFICIENT_SCCB_LENGTH handling and repeat the sclp command. Pierre Morel (2): s390x: sclp: consider monoprocessor on read_info error s390x: sclp: Implement SCLP_RC_INSUFFICIENT_SCCB_LENGTH lib/s390x/sclp.c | 69 +++++++++++++++++++++++++++++++++++++++++------- 1 file changed, 59 insertions(+), 10 deletions(-) -- 2.31.1 since v3: - added initial patch and merge with comments Sorry for the noise. since v2: - use tabs in first patch (Nico) - Added comments - Added SCLP_RC_INSUFFICIENT_SCCB_LENGTH handling
