Hi,
It seems that ioctl_by_bdev() in fs/block_dev.c has a problem.
When initrd is unmounted it can cause OOPS.
This problem occurs in recent ac patches.
May be vanilla too.
change_root() in fs/super.c calls ioctl_by_bdev() in
fs/block_dev.c which does not set inode_fake.i_bdev.
But ioctl of ramdisk (rd_ioctl() in rd.c) accesses to
i_bdev->bd_openers of the inode and which causes OOPS.
I attach the patch.
- GO!
--- linux/fs/block_dev.c.orig Mon May 28 12:40:12 2001
+++ linux/fs/block_dev.c Mon May 28 12:40:12 2001
@@ -602,6 +602,7 @@
if (!bdev->bd_op->ioctl)
return -EINVAL;
inode_fake.i_rdev=rdev;
+ inode_fake.i_bdev=bdev;
init_waitqueue_head(&inode_fake.i_wait);
set_fs(KERNEL_DS);
res = bdev->bd_op->ioctl(&inode_fake, NULL, cmd, arg);
-
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This archive was generated by hypermail 2b29 : Thu May 31 2001 - 21:00:35 EST