Preposterous errno values from kernel

[Kris Kennaway]

I'm getting this on a RELENG_5_4 sparc64 system (e4500):

# rm -rf *
/bin/rm: Unknown error: 7283.
# ktrace rm -rf *
/usr/bin/ktrace: Address already in use.
# ktrace /bin/rm -rf *
/usr/bin/ktrace: Software caused connection abort.
# ktrace -di sh
# /bin/rm -f *
/bin/rm: Network dropped connection on reset

[...]
   505 sh       CALL  execve(0x22c0c0,0x278010,0x277e10)
   505 sh       NAMI  "/bin/rm"
   505 sh       RET   execve -1 errno 52 Network dropped connection on reset
   505 sh       CALL  write(0x2,0x22a080,0x2d)
 
# ktrace -di sh
# rm -rf *
rm: Unknown error: 7283

[...]
   510 sh       CALL  execve(0x277ee0,0x278010,0x277e10)
   510 sh       NAMI  "/bin/rm"
   510 sh       RET   execve -1 errno 7283 Unknown error: 7283
   510 sh       CALL  execve(0x277ee0,0x278010,0x277e10)

I have verified that the kernel is up-to-date and there are no
extraneous patches in my source tree.  It has survived a kernel clean
and rebuild.

Kris

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