Had a few minutes to look around. On Tue, Mar 24, 2009 at 12:28:57PM -0500, Robin Holt wrote: > I just built and booted an ia64 2.6.29 kernel. While accessing NFS > filesystems, I occassionally get: > > kernel unaligned access to 0xe00007bc3b8f67b9, ip=0xa00000020a61e370 > kernel unaligned access to 0xe00007bc3b8f67b1, ip=0xa00000020a61e3d1 > > grep a00000020a61 /proc/modules > lockd 146448 1 nfs, Live 0xa00000020a610000 > > > These come in pairs. I tracked it down to the lockd.ko kernel module > and then objdump'd to find we are in: > > > nsm_get_handle > nsm_init_private(): > /data/lwork/attica2/holt/git-linus/v2.6.29/fs/lockd/mon.c:280 > e370: 0b 00 98 68 98 11 [MMI] st8 [r52]=r38;; This one is: u64 *p = (u64 *)&nsm->sm_priv.data; ... *p = (unsigned long)nsm; sm_priv.data is an unsigned char array, so there are no alignment rules. You either need to use memcpy, or not define it as an unsigned char. Tony, any suggestions? > /data/lwork/attica2/holt/git-linus/v2.6.29/fs/lockd/mon.c:279 > e376: 00 00 00 02 00 00 nop.m 0x0 > e37c: 92 d0 e9 53 shl r16=r9,5;; > > nsm_display_address(): > /data/lwork/attica2/holt/git-linus/v2.6.29/fs/lockd/mon.c:86 > ... > e3d0: 0a 60 28 1c 8d 39 [MMI] cmp4.eq p12,p13=10,r14;; > e3d6: 00 a8 95 30 23 00 st8 [r37]=r53 Haven't gotten to this one yet. Robin -- To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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