1. 20 Mar, 2006 20 commits
  2. 19 Mar, 2006 2 commits
    • Michael Chan's avatar
      [TG3]: 40-bit DMA workaround part 2 · 4a29cc2e
      Michael Chan authored
      The 40-bit DMA workaround recently implemented for 5714, 5715, and
      5780 needs to be expanded because there may be other tg3 devices
      behind the EPB Express to PCIX bridge in the 5780 class device.
      
      For example, some 4-port card or mother board designs have 5704 behind
      the 5714.
      
      All devices behind the EPB require the 40-bit DMA workaround.
      
      Thanks to Chris Elmquist again for reporting the problem and testing
      the patch.
      Signed-off-by: default avatarMichael Chan <mchan@broadcom.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      4a29cc2e
    • Ralf Baechle DL5RB's avatar
      [AX.25]: Fix potencial memory hole. · c7c694d1
      Ralf Baechle DL5RB authored
      If the AX.25 dialect chosen by the sysadmin is set to DAMA master / 3
      (or DAMA slave / 2, if CONFIG_AX25_DAMA_SLAVE=n) ax25_kick() will fall
      through the switch statement without calling ax25_send_iframe() or any
      other function that would eventually free skbn thus leaking the packet.
      
      Fix by restricting the sysctl inferface to allow only actually supported
      AX.25 dialects.
      
      The system administration mistake needed for this to happen is rather
      unlikely, so this is an uncritical hole.
      
      Coverity #651.
      Signed-off-by: default avatarRalf Baechle DL5RB <ralf@linux-mips.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c7c694d1
  3. 18 Mar, 2006 16 commits
  4. 17 Mar, 2006 2 commits
    • Hugh Dickins's avatar
      [PATCH] fix free swap cache latency · 6f5e6b9e
      Hugh Dickins authored
      Lee Revell reported 28ms latency when process with lots of swapped memory
      exits.
      
      2.6.15 introduced a latency regression when unmapping: in accounting the
      zap_work latency breaker, pte_none counted 1, pte_present PAGE_SIZE, but a
      swap entry counted nothing at all.  We think of pages present as the slow
      case, but Lee's trace shows that free_swap_and_cache's radix tree lookup
      can make a lot of work - and we could have been doing it many thousands of
      times without a latency break.
      
      Move the zap_work update up to account swap entries like pages present.
      This does account non-linear pte_file entries, and unmap_mapping_range
      skipping over swap entries, by the same amount even though they're quick:
      but neither of those cases deserves complicating the code (and they're
      treated no worse than they were in 2.6.14).
      Signed-off-by: default avatarHugh Dickins <hugh@veritas.com>
      Acked-by: default avatarNick Piggin <npiggin@suse.de>
      Acked-by: default avatarIngo Molnar <mingo@elte.hu>
      Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
      6f5e6b9e
    • Sam Ravnborg's avatar
      [PATCH] kbuild: fix buffer overflow in modpost · 7670f023
      Sam Ravnborg authored
      Jiri Benc <jbenc@suse.cz> reported that modpost would stop with SIGABRT if
      used with long filepaths.
      The error looked like:
      >   Building modules, stage 2.
      >   MODPOST
      > *** glibc detected *** scripts/mod/modpost: realloc(): invalid next size:
      +0x0809f588 ***
      > [...]
      
      Fix this by allocating at least the required memory + SZ bytes each time.
      Before we sometimes ended up allocating too little memory resuting in the
      glibc detected bug above.  Based on patch originally submitted by: Jiri
      Benc <jbenc@suse.cz>
      Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
      Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
      7670f023