Server with samfs filesystems panicking on boot at {do_kern_mount+205} on Red Hat Enterprise Linux 5

Process mount.samfs (pid: 16011, threadinfo 0000010120eac000, task 000001011f95f030)
Stack:
Call Trace:<ffffffff801951a0>{do_mount+1690} <ffffffff80186bfc>{__link_path_walk+3366}
    <ffffffffa02039f5>{SUNWqfs:sam_syscall+42} <ffffffff8018f019>{dput+56}
    <ffffffff80186dc0>{link_path_walk+176} <ffffffff80181d5d>{sys_newstat+32}
    <ffffffff801ece75>{strncpy_from_user+74} <ffffffff801e8f66>{kobject_get+18}
    <ffffffff8018137a>{cdev_get+48} <ffffffff80195543>{sys_mount+186}
    <ffffffff8011026a>{system_call+126}

Code: 49 8b 54 24 70 48 85 d2 74 15 8b 02 85 c0 75 0c 0f 0b 6e 71
RIP <ffffffff8017fb6d>{do_kern_mount+205} RSP <0000010120eadca8>
CR2: 0000000000000072
 <0>Kernel panic - not syncing: Oops