From: Greg Kroah-Hartman Date: Wed, 19 Feb 2025 07:01:16 +0000 (+0100) Subject: Revert "vfio/platform: check the bounds of read/write syscalls" X-Git-Tag: v6.12.16~1 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=61749c035911066e555e9b0a5891175312f7e0ba;p=thirdparty%2Fkernel%2Fstable.git Revert "vfio/platform: check the bounds of read/write syscalls" This reverts commit 61ba518195d61c38c6cb86f83135e51f93735442. It had been committed multiple times to the tree, and isn't needed again. Link: https://lore.kernel.org/r/a082db2605514513a0a8568382d5bd2b6f1877a0.camel@cyberus-technology.de Reported-by: Stefan Nürnberger Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/vfio/platform/vfio_platform_common.c b/drivers/vfio/platform/vfio_platform_common.c index d63c2d266d073..3bf1043cd7957 100644 --- a/drivers/vfio/platform/vfio_platform_common.c +++ b/drivers/vfio/platform/vfio_platform_common.c @@ -393,11 +393,6 @@ static ssize_t vfio_platform_read_mmio(struct vfio_platform_region *reg, count = min_t(size_t, count, reg->size - off); - if (off >= reg->size) - return -EINVAL; - - count = min_t(size_t, count, reg->size - off); - if (!reg->ioaddr) { reg->ioaddr = ioremap(reg->addr, reg->size); @@ -482,11 +477,6 @@ static ssize_t vfio_platform_write_mmio(struct vfio_platform_region *reg, count = min_t(size_t, count, reg->size - off); - if (off >= reg->size) - return -EINVAL; - - count = min_t(size_t, count, reg->size - off); - if (!reg->ioaddr) { reg->ioaddr = ioremap(reg->addr, reg->size);