aio: fix the vectored aio routines
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From: Jeff Moyer on 4 May 2010 16:20 Andrew Morton <akpm(a)linux-foundation.org> writes: > On Fri, 30 Apr 2010 16:48:58 -0400 > Jeff Moyer <jmoyer(a)redhat.com> wrote: > >> Hi, >> >> It was reported[1] that 32 bit readv and writev AIO operations were >> not functioning properly. It turns out that the code to convert the >> 32bit io vectors to 64 bits was never written. The results of that >> can be pretty bad, but in my testing, it mostly ended up in generating >> EFAULT as we walked off the list of I/O vectors provided. >> >> This patch set fixes the problem in my environment. Comments, as always, >> are greatly appreciated. >> >> Cheers, >> Jeff >> >> [1] http://lkml.org/lkml/2010/3/8/309 >> >> [PATCH 1/2] compat: factor out compat_rw_copy_check_uvector from compat_do_readv_writev >> [PATCH 2/2] aio: fix the compat vectored operations > > The patches are large(ish) and we're at -rc6. I'm inclined to merge > these into 2.6.35-rc1 with a -stable tag so they get backported into 2.6.34.1 > after a bit of mainline testing, OK? That's fine with me. Cheers, Jeff -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
From: Andrew Morton on 4 May 2010 16:20
On Fri, 30 Apr 2010 16:48:58 -0400 Jeff Moyer <jmoyer(a)redhat.com> wrote: > Hi, > > It was reported[1] that 32 bit readv and writev AIO operations were > not functioning properly. It turns out that the code to convert the > 32bit io vectors to 64 bits was never written. The results of that > can be pretty bad, but in my testing, it mostly ended up in generating > EFAULT as we walked off the list of I/O vectors provided. > > This patch set fixes the problem in my environment. Comments, as always, > are greatly appreciated. > > Cheers, > Jeff > > [1] http://lkml.org/lkml/2010/3/8/309 > > [PATCH 1/2] compat: factor out compat_rw_copy_check_uvector from compat_do_readv_writev > [PATCH 2/2] aio: fix the compat vectored operations The patches are large(ish) and we're at -rc6. I'm inclined to merge these into 2.6.35-rc1 with a -stable tag so they get backported into 2.6.34.1 after a bit of mainline testing, OK? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |