The patch titled alpha: strncpy/strncat fixes has been added to the -mm tree. Its filename is alpha-strncpy-strncat-fixes.patch *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find out what to do about this ------------------------------------------------------ Subject: alpha: strncpy/strncat fixes From: Ivan Kokshaysky <ink@xxxxxxxxxxxxxxxxxxxx> First of all, thanks to Bob Tracy <rct@xxxxxxxx> and Michael Cree <mcree@xxxxxxxxxxxx> for testing. Especially to Bob, as he has done titanic multi-day git-bisect work that finally helped to reproduce and nail down the bug (http://bugzilla.kernel.org/show_bug.cgi?id=9457). [ev6-]stxncpy.S: it's t12, not t2 register that is supposed to contain the last byte offset upon return. As a result of wrong register use (which was my fault back in 2003, IIRC), under some circumstances extra terminating zero bytes were added to destination string. This particularly led to incorrect DEVPATH strings generated in uevent and therefore to udev problems. strncpy.S: unrelated bug I found while testing the above fix - destination is not properly zero-padded then a byte count exceeds source length. Actually this is addition to strncpy fix from last year. Signed-off-by: Ivan Kokshaysky <ink@xxxxxxxxxxxxxxxxxxxx> Cc: Richard Henderson <rth@xxxxxxxxxxx> Cc: Bob Tracy <rct@xxxxxxxx> Cc: Michael Cree <mcree@xxxxxxxxxxxx> Cc: Kay Sievers <kay.sievers@xxxxxxxx> Cc: "Rafael J. Wysocki" <rjw@xxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- arch/alpha/lib/ev6-stxncpy.S | 14 +++++++------- arch/alpha/lib/strncpy.S | 2 +- arch/alpha/lib/stxncpy.S | 14 +++++++------- 3 files changed, 15 insertions(+), 15 deletions(-) diff -puN arch/alpha/lib/ev6-stxncpy.S~alpha-strncpy-strncat-fixes arch/alpha/lib/ev6-stxncpy.S --- a/arch/alpha/lib/ev6-stxncpy.S~alpha-strncpy-strncat-fixes +++ a/arch/alpha/lib/ev6-stxncpy.S @@ -362,10 +362,10 @@ $unaligned: extql t2, a1, t2 # U : cmpbge zero, t1, t8 # E : is there a zero? - andnot t2, t6, t12 # E : dest mask for a single word copy + andnot t2, t6, t2 # E : dest mask for a single word copy or t8, t10, t5 # E : test for end-of-count too - cmpbge zero, t12, t3 # E : + cmpbge zero, t2, t3 # E : cmoveq a2, t5, t8 # E : Latency=2, extra map slot nop # E : keep with cmoveq andnot t8, t3, t8 # E : (stall) @@ -379,13 +379,13 @@ $unaligned: negq t8, t6 # E : build bitmask of bytes <= zero mskqh t1, t4, t1 # U : - and t6, t8, t2 # E : - subq t2, 1, t6 # E : (stall) - or t6, t2, t8 # E : (stall) - zapnot t12, t8, t12 # U : prepare source word; mirror changes (stall) + and t6, t8, t12 # E : + subq t12, 1, t6 # E : (stall) + or t6, t12, t8 # E : (stall) + zapnot t2, t8, t2 # U : prepare source word; mirror changes (stall) zapnot t1, t8, t1 # U : to source validity mask - andnot t0, t12, t0 # E : zero place for source to reside + andnot t0, t2, t0 # E : zero place for source to reside or t0, t1, t0 # E : and put it there (stall both t0, t1) stq_u t0, 0(a0) # L : (stall) diff -puN arch/alpha/lib/strncpy.S~alpha-strncpy-strncat-fixes arch/alpha/lib/strncpy.S --- a/arch/alpha/lib/strncpy.S~alpha-strncpy-strncat-fixes +++ a/arch/alpha/lib/strncpy.S @@ -35,7 +35,7 @@ strncpy: or $3, $24, $3 # clear the bits between the last or $4, $27, $4 # written byte and the last byte in COUNT - andnot $4, $3, $4 + andnot $3, $4, $4 zap $1, $4, $1 stq_u $1, 0($16) diff -puN arch/alpha/lib/stxncpy.S~alpha-strncpy-strncat-fixes arch/alpha/lib/stxncpy.S --- a/arch/alpha/lib/stxncpy.S~alpha-strncpy-strncat-fixes +++ a/arch/alpha/lib/stxncpy.S @@ -315,9 +315,9 @@ $unaligned: extql t2, a1, t2 # e0 : cmpbge zero, t1, t8 # .. e1 : is there a zero? - andnot t2, t6, t12 # e0 : dest mask for a single word copy + andnot t2, t6, t2 # e0 : dest mask for a single word copy or t8, t10, t5 # .. e1 : test for end-of-count too - cmpbge zero, t12, t3 # e0 : + cmpbge zero, t2, t3 # e0 : cmoveq a2, t5, t8 # .. e1 : andnot t8, t3, t8 # e0 : beq t8, $u_head # .. e1 (zdb) @@ -330,14 +330,14 @@ $unaligned: ldq_u t0, 0(a0) # e0 : negq t8, t6 # .. e1 : build bitmask of bytes <= zero mskqh t1, t4, t1 # e0 : - and t6, t8, t2 # .. e1 : - subq t2, 1, t6 # e0 : - or t6, t2, t8 # e1 : + and t6, t8, t12 # .. e1 : + subq t12, 1, t6 # e0 : + or t6, t12, t8 # e1 : - zapnot t12, t8, t12 # e0 : prepare source word; mirror changes + zapnot t2, t8, t2 # e0 : prepare source word; mirror changes zapnot t1, t8, t1 # .. e1 : to source validity mask - andnot t0, t12, t0 # e0 : zero place for source to reside + andnot t0, t2, t0 # e0 : zero place for source to reside or t0, t1, t0 # e1 : and put it there stq_u t0, 0(a0) # e0 : ret (t9) # .. e1 : _ Patches currently in -mm which might be from ink@xxxxxxxxxxxxxxxxxxxx are alpha-strncpy-strncat-fixes.patch iommu-sg-merging-alpha-make-pci_iommu-respect-the-segment-size-limits.patch arch-alpha-removed-duplicate-includes.patch alpha-atomic_add_return-should-return-int.patch alpha-kill-deprecated-virt_to_bus.patch alpha-doesnt-use-socketcall.patch agp-alpha-nopage.patch alpha-parisc-removing-config-variable-debug_rwlock.patch get-rid-of-nr_open-and-introduce-a-sysctl_nr_open.patch sanitize-the-type-of-struct-useru_ar0.patch add-cmpxchg64-and-cmpxchg64_local-to-alpha.patch make-sure-nobodys-leaking-resources.patch - To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html