Re: Alpha: bad unaligned access handling

[Carlos Carvalho]

Jan-Benedict Glaw ([e-mail]) wrote on 14 February 2001 15:48:
 >With my currently installed ping (netkit-ping 0.10-6 from Debian Woody)
 >I get unaligned accesses:
 >
 >ping(15953): unaligned trap at 00000001200030e4: 0000000120026b34 29 1
 >ping(15953): unaligned trap at 0000000120003110: 0000000120026b2c 29 2
 >
 >The worse part is: they seem to be handled The Wrong Way:
 >
 >[jbglaw@air:/home/jbglaw] $> ping -c 1 localhost
 >PING localhost (127.0.0.1): 56 data bytes
 >64 bytes from 127.0.0.1: icmp_seq=0 ttl=255 time=13.8 ms
 >wrong data byte #8 should be 0x8 but was 0xdc
 >        c d e f 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20 21 22 23 24 25 26 27 28 29 2a 2b 
 >        2c 2d 2e 2f 0 0 0 0 0 0 0 0 0 0 0 0 
 >
 >--- localhost ping statistics ---
 >1 packets transmitted, 1 packets received, 0% packet loss
 >round-trip min/avg/max = 13.8/13.8/13.8 ms
 >
 >
 >This is on a NoName Alpha box, running 2.4.0-test8-pre1 (with very good
 >uptimes), but I think 2.4.2-pre2 would do the same (wrong) things as
 >arch/alpha/kernel/traps.c wasn't really changed since ages...

I also get these, with 2.2.18pre5 (plus some Andrea patches) and
vanilla 2.2.19pre10 on a SMP UP2000.