[Bug 42731] New: invalid opcode BUG at lib/radix-tree.c:477

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https://bugzilla.kernel.org/show_bug.cgi?id=42731

           Summary: invalid opcode BUG at lib/radix-tree.c:477
           Product: File System
           Version: 2.5
    Kernel Version: 3.2.2
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: XFS
        AssignedTo: xfs-masters@xxxxxxxxxxx
        ReportedBy: wferi@xxxxxxx
                CC: rjw@xxxxxxx
        Regression: Yes


Created an attachment (id=72287)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=72287)
screenshot of invalid opcode BUG during hibernation

Let's open a separate issue for this, maybe it's not the same as bug 13375
after all.

Occasionally, during the memory preallocation phase of hibernation, I hit an
invalid opcode bug in radix_tree_tag_set, called from
__xfs_inode_set_reclaim_tag (see attached screenshot for the full stack trace).
The bug isn't easily reproducible, but the two captured stack traces are very
similar (you can find the other in attachment 72194).

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