diff options
| -rw-r--r-- | fs/pstore/platform.c | 1 | ||||
| -rw-r--r-- | fs/pstore/ram.c | 19 | ||||
| -rw-r--r-- | fs/pstore/ram_core.c | 4 |
3 files changed, 14 insertions, 10 deletions
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c index 78c3c209778..46d269e3870 100644 --- a/fs/pstore/platform.c +++ b/fs/pstore/platform.c @@ -497,6 +497,7 @@ void pstore_get_records(int quiet) big_oops_buf_sz); if (unzipped_len > 0) { + kfree(buf); buf = big_oops_buf; size = unzipped_len; compressed = false; diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c index fa8cef2cca3..3b5744306ed 100644 --- a/fs/pstore/ram.c +++ b/fs/pstore/ram.c @@ -86,6 +86,7 @@ struct ramoops_context { struct persistent_ram_ecc_info ecc_info; unsigned int max_dump_cnt; unsigned int dump_write_cnt; + /* _read_cnt need clear on ramoops_pstore_open */ unsigned int dump_read_cnt; unsigned int console_read_cnt; unsigned int ftrace_read_cnt; @@ -101,6 +102,7 @@ static int ramoops_pstore_open(struct pstore_info *psi) cxt->dump_read_cnt = 0; cxt->console_read_cnt = 0; + cxt->ftrace_read_cnt = 0; return 0; } @@ -117,13 +119,15 @@ ramoops_get_next_prz(struct persistent_ram_zone *przs[], uint *c, uint max, return NULL; prz = przs[i]; + if (!prz) + return NULL; - if (update) { - /* Update old/shadowed buffer. */ + /* Update old/shadowed buffer. */ + if (update) persistent_ram_save_old(prz); - if (!persistent_ram_old_size(prz)) - return NULL; - } + + if (!persistent_ram_old_size(prz)) + return NULL; *typep = type; *id = i; @@ -316,6 +320,7 @@ static void ramoops_free_przs(struct ramoops_context *cxt) { int i; + cxt->max_dump_cnt = 0; if (!cxt->przs) return; @@ -346,7 +351,7 @@ static int ramoops_init_przs(struct device *dev, struct ramoops_context *cxt, GFP_KERNEL); if (!cxt->przs) { dev_err(dev, "failed to initialize a prz array for dumps\n"); - return -ENOMEM; + goto fail_prz; } for (i = 0; i < cxt->max_dump_cnt; i++) { @@ -428,7 +433,6 @@ static int ramoops_probe(struct platform_device *pdev) if (pdata->ftrace_size && !is_power_of_2(pdata->ftrace_size)) pdata->ftrace_size = rounddown_pow_of_two(pdata->ftrace_size); - cxt->dump_read_cnt = 0; cxt->size = pdata->mem_size; cxt->phys_addr = pdata->mem_address; cxt->record_size = pdata->record_size; @@ -505,7 +509,6 @@ fail_buf: kfree(cxt->pstore.buf); fail_clear: cxt->pstore.bufsize = 0; - cxt->max_dump_cnt = 0; fail_cnt: kfree(cxt->fprz); fail_init_fprz: diff --git a/fs/pstore/ram_core.c b/fs/pstore/ram_core.c index de272d42676..ff7e3d4df5a 100644 --- a/fs/pstore/ram_core.c +++ b/fs/pstore/ram_core.c @@ -54,7 +54,7 @@ static size_t buffer_start_add_atomic(struct persistent_ram_zone *prz, size_t a) do { old = atomic_read(&prz->buffer->start); new = old + a; - while (unlikely(new > prz->buffer_size)) + while (unlikely(new >= prz->buffer_size)) new -= prz->buffer_size; } while (atomic_cmpxchg(&prz->buffer->start, old, new) != old); @@ -91,7 +91,7 @@ static size_t buffer_start_add_locked(struct persistent_ram_zone *prz, size_t a) old = atomic_read(&prz->buffer->start); new = old + a; - while (unlikely(new > prz->buffer_size)) + while (unlikely(new >= prz->buffer_size)) new -= prz->buffer_size; atomic_set(&prz->buffer->start, new); |