diff options
| author | Bixuan Cui <cuibixuan@linux.alibaba.com> | 2023-01-05 11:31:36 +0800 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2023-01-05 14:12:18 -0800 |
| commit | f276ebba2d1ff616e5a2c7673343f588843bcb64 (patch) | |
| tree | e40f65573f3505f7dd0a79c324ad6b422c79d781 | |
| parent | 93f96e3f8fa2ec67e9cc19d0e728603440e535b4 (diff) | |
| download | ras-tools-f276ebba2d1ff616e5a2c7673343f588843bcb64.tar.gz | |
einj_mem_uc: add new test case for share memory
Share memory is read by two tasks to target address.
[Tony: Fix some indenting. Rename page_cache_alloc() to
map_file_alloc() now it is used for another test]
Signed-off-by: Bixuan Cui <cuibixuan@linux.alibaba.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
| -rw-r--r-- | einj_mem_uc.c | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/einj_mem_uc.c b/einj_mem_uc.c index bfb644b..2e0d75a 100644 --- a/einj_mem_uc.c +++ b/einj_mem_uc.c @@ -474,7 +474,7 @@ static void *data_alloc_private(void) static FILE *pcfile; -static void *page_cache_alloc(void) +static void *map_file_alloc(void) { char c, *p; int i; @@ -642,6 +642,34 @@ int trigger_thread(char *addr) return 0; } + +int trigger_share(char *addr) +{ + int pid, status; + + switch (pid = fork()) { + case -1: + fprintf(stderr, "%s: fork failed\n", progname); + return -1; + case 0: + /* mmap share memory */ + char *p = mmap(NULL, pagesize, PROT_READ, MAP_SHARED, fileno(pcfile), 0); + if (p == NULL) { + fprintf(stderr, "%s: cannot mmap sharefile\n", progname); + exit(1); + } + + PRINT_TRIGGERING; + return *(p + pagesize / 4); + } + + while (wait(&status) != pid) + ; + + PRINT_TRIGGERING; + return addr[0]; +} + /* * parameters to the memcpy and copyin tests. */ @@ -942,6 +970,10 @@ struct test { data_alloc, inject_uc, 1, trigger_thread, F_MCE|F_CMCI|F_SIGBUS, }, { + "share", "Share memory is read by two tasks to target address, generates SRAR machine check", + map_file_alloc, inject_uc, 1, trigger_share, F_MCE|F_CMCI|F_SIGBUS, + }, + { "llc", "Cache write-back, generates SRAO machine check", data_alloc, inject_llc, 1, trigger_llc, F_MCE, }, @@ -951,7 +983,7 @@ struct test { }, { "copyout", "Kernel copies data to user. Probably fatal", - page_cache_alloc, inject_uc, 1, trigger_copyout, F_MCE|F_CMCI|F_SIGBUS|F_FATAL, + map_file_alloc, inject_uc, 1, trigger_copyout, F_MCE|F_CMCI|F_SIGBUS|F_FATAL, }, { "copy-on-write", "Kernel copies user page. Probably fatal", |