I have run into few instances where the lost_exception_test from powerpc kselftest fails with SIGABRT. Following o/p is against 4.11.0-rc5. The failure is intermittent.
When the test fails it is killed due to SIGABRT. # ./lost_exception_test test: lost_exception tags: git_version:unknown Binding to cpu 8 main test running as pid 9208 EBB Handler is at 0x10003dcc !! killing lost_exception ebb_state: ebb_count = 191529 spurious = 0 negative = 0 no_overflow = 0 pmc[1] count = 0x0 pmc[2] count = 0x0 pmc[3] count = 0x0 pmc[4] count = 0x4c1b707 pmc[5] count = 0x0 pmc[6] count = 0x0 HW state: MMCR0 0x0000000080000080 FC PMAO MMCR2 0x0000000000000000 EBBHR 0x0000000010003dcc BESCR 0x8000000100000000 GE PMAE PMC1 0x0000000000000000 PMC2 0x0000000000000000 PMC3 0x0000000000000000 PMC4 0x0000000080000000 PMC5 0x0000000088d4f0c8 PMC6 0x000000001e49da22 SIAR 0x00003fffad60a608 !! child died by signal 6 failure: lost_exception # Thanks -Sachin