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Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 

* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  dma-debug: Fix check_unmap null pointer dereference
This commit is contained in:
Linus Torvalds 2009-08-25 11:24:24 -07:00
parent 44afa9a4b8 ec9c96ef3c
commit 87bcfa3366
1 changed files with 16 additions and 12 deletions
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28
lib/dma-debug.c
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@ -156,9 +156,13 @@ static bool driver_filter(struct device *dev)
return true; return true;
/* driver filter on and initialized */ /* driver filter on and initialized */
if (current_driver && dev->driver == current_driver) if (current_driver && dev && dev->driver == current_driver)
return true; return true;
/* driver filter on, but we can't filter on a NULL device... */
if (!dev)
return false;
if (current_driver || !current_driver_name[0]) if (current_driver || !current_driver_name[0])
return false; return false;
@ -183,17 +187,17 @@ static bool driver_filter(struct device *dev)
return ret; return ret;
} }
#define err_printk(dev, entry, format, arg...) do { \ #define err_printk(dev, entry, format, arg...) do { \
error_count += 1; \ error_count += 1; \
if (driver_filter(dev) && \ if (driver_filter(dev) && \
(show_all_errors || show_num_errors > 0)) { \ (show_all_errors || show_num_errors > 0)) { \
WARN(1, "%s %s: " format, \ WARN(1, "%s %s: " format, \
dev_driver_string(dev), \ dev ? dev_driver_string(dev) : "NULL", \
dev_name(dev) , ## arg); \ dev ? dev_name(dev) : "NULL", ## arg); \
dump_entry_trace(entry); \ dump_entry_trace(entry); \
} \ } \
if (!show_all_errors && show_num_errors > 0) \ if (!show_all_errors && show_num_errors > 0) \
show_num_errors -= 1; \ show_num_errors -= 1; \
} while (0); } while (0);
/* /*