Dear all,
Haruo> When I installed Red Hat ES 2.1(kernel 2.4.9-e.12) for my PC,
Haruo> the issue of NULL pointer dereference in
Haruo> ide_revalidate_disk() occurred.
Haruo> If it understands about the root cause of this issue,
Haruo> Please let me know your idea.
I found the bug of a cdrom driver, as a result of debugging.
The correction patch is as follows. Is my correction right?
Regards,
Haruo
diff -Nru linux-2.4.9-e.12/drivers/cdrom/cdrom.c
linux-2.4.9-e.12boot/drivers/cdrom/cdrom.c
--- linux-2.4.9-e.12/drivers/cdrom/cdrom.c Tue Feb 11 13:11:07 2003
+++ linux-2.4.9-e.12boot/drivers/cdrom/cdrom.c Thu Jul 31 02:08:52 2003
@@ -2720,7 +2720,7 @@
int n_entries = CDROM_MAX_CDROMS / (sizeof(unsigned long) * 8);
cdrom_numbers = kmalloc(n_entries * sizeof(unsigned long), GFP_KERNEL);
-
+ memset(cdrom_numbers, 0, n_entries * sizeof(unsigned long));
#ifdef CONFIG_SYSCTL
cdrom_sysctl_register();
#endif
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