| Message ID | 20201005152725.2143444-1-philmd@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | softmmu/memory: Log invalid memory accesses | expand |
On Mon, Oct 05, 2020 at 05:27:25PM +0200, Philippe Mathieu-Daudé wrote: > Log invalid memory accesses with as GUEST_ERROR. > > This is particularly useful since commit 5d971f9e67 which reverted > ("memory: accept mismatching sizes in memory_region_access_valid"). > > Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Paolo's tree I assume? > --- > softmmu/memory.c | 16 ++++++++++++++++ > 1 file changed, 16 insertions(+) > > diff --git a/softmmu/memory.c b/softmmu/memory.c > index fa280a19f7..403ff3abc9 100644 > --- a/softmmu/memory.c > +++ b/softmmu/memory.c > @@ -14,6 +14,7 @@ > */ > > #include "qemu/osdep.h" > +#include "qemu/log.h" > #include "qapi/error.h" > #include "cpu.h" > #include "exec/memory.h" > @@ -1353,10 +1354,18 @@ bool memory_region_access_valid(MemoryRegion *mr, > { > if (mr->ops->valid.accepts > && !mr->ops->valid.accepts(mr->opaque, addr, size, is_write, attrs)) { > + qemu_log_mask(LOG_GUEST_ERROR, "Invalid access at addr " > + "0x%" HWADDR_PRIX ", size %u, " > + "region '%s', reason: rejected\n", > + addr, size, memory_region_name(mr)); > return false; > } > > if (!mr->ops->valid.unaligned && (addr & (size - 1))) { > + qemu_log_mask(LOG_GUEST_ERROR, "Invalid access at addr " > + "0x%" HWADDR_PRIX ", size %u, " > + "region '%s', reason: unaligned\n", > + addr, size, memory_region_name(mr)); > return false; > } > > @@ -1367,6 +1376,13 @@ bool memory_region_access_valid(MemoryRegion *mr, > > if (size > mr->ops->valid.max_access_size > || size < mr->ops->valid.min_access_size) { > + qemu_log_mask(LOG_GUEST_ERROR, "Invalid access at addr " > + "0x%" HWADDR_PRIX ", size %u, " > + "region '%s', reason: invalid size " > + "(min:%u max:%u)\n", > + addr, size, memory_region_name(mr), > + mr->ops->valid.min_access_size, > + mr->ops->valid.max_access_size); > return false; > } > return true; > -- > 2.26.2
On 10/5/20 7:57 PM, Michael S. Tsirkin wrote: > On Mon, Oct 05, 2020 at 05:27:25PM +0200, Philippe Mathieu-Daudé wrote: >> Log invalid memory accesses with as GUEST_ERROR. >> >> This is particularly useful since commit 5d971f9e67 which reverted >> ("memory: accept mismatching sizes in memory_region_access_valid"). >> >> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> > > Reviewed-by: Michael S. Tsirkin <mst@redhat.com> > > Paolo's tree I assume? Or qemu-trivial, whichever is less busy :) > >> --- >> softmmu/memory.c | 16 ++++++++++++++++ >> 1 file changed, 16 insertions(+) >> >> diff --git a/softmmu/memory.c b/softmmu/memory.c >> index fa280a19f7..403ff3abc9 100644 >> --- a/softmmu/memory.c >> +++ b/softmmu/memory.c >> @@ -14,6 +14,7 @@ >> */ >> >> #include "qemu/osdep.h" >> +#include "qemu/log.h" >> #include "qapi/error.h" >> #include "cpu.h" >> #include "exec/memory.h" >> @@ -1353,10 +1354,18 @@ bool memory_region_access_valid(MemoryRegion *mr, >> { >> if (mr->ops->valid.accepts >> && !mr->ops->valid.accepts(mr->opaque, addr, size, is_write, attrs)) { >> + qemu_log_mask(LOG_GUEST_ERROR, "Invalid access at addr " >> + "0x%" HWADDR_PRIX ", size %u, " >> + "region '%s', reason: rejected\n", >> + addr, size, memory_region_name(mr)); >> return false; >> } >> >> if (!mr->ops->valid.unaligned && (addr & (size - 1))) { >> + qemu_log_mask(LOG_GUEST_ERROR, "Invalid access at addr " >> + "0x%" HWADDR_PRIX ", size %u, " >> + "region '%s', reason: unaligned\n", >> + addr, size, memory_region_name(mr)); >> return false; >> } >> >> @@ -1367,6 +1376,13 @@ bool memory_region_access_valid(MemoryRegion *mr, >> >> if (size > mr->ops->valid.max_access_size >> || size < mr->ops->valid.min_access_size) { >> + qemu_log_mask(LOG_GUEST_ERROR, "Invalid access at addr " >> + "0x%" HWADDR_PRIX ", size %u, " >> + "region '%s', reason: invalid size " >> + "(min:%u max:%u)\n", >> + addr, size, memory_region_name(mr), >> + mr->ops->valid.min_access_size, >> + mr->ops->valid.max_access_size); >> return false; >> } >> return true; >> -- >> 2.26.2 >
Le 05/10/2020 à 17:27, Philippe Mathieu-Daudé a écrit : > Log invalid memory accesses with as GUEST_ERROR. > > This is particularly useful since commit 5d971f9e67 which reverted > ("memory: accept mismatching sizes in memory_region_access_valid"). > > Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> > --- > softmmu/memory.c | 16 ++++++++++++++++ > 1 file changed, 16 insertions(+) > > diff --git a/softmmu/memory.c b/softmmu/memory.c > index fa280a19f7..403ff3abc9 100644 > --- a/softmmu/memory.c > +++ b/softmmu/memory.c > @@ -14,6 +14,7 @@ > */ > > #include "qemu/osdep.h" > +#include "qemu/log.h" > #include "qapi/error.h" > #include "cpu.h" > #include "exec/memory.h" > @@ -1353,10 +1354,18 @@ bool memory_region_access_valid(MemoryRegion *mr, > { > if (mr->ops->valid.accepts > && !mr->ops->valid.accepts(mr->opaque, addr, size, is_write, attrs)) { > + qemu_log_mask(LOG_GUEST_ERROR, "Invalid access at addr " > + "0x%" HWADDR_PRIX ", size %u, " > + "region '%s', reason: rejected\n", > + addr, size, memory_region_name(mr)); > return false; > } > > if (!mr->ops->valid.unaligned && (addr & (size - 1))) { > + qemu_log_mask(LOG_GUEST_ERROR, "Invalid access at addr " > + "0x%" HWADDR_PRIX ", size %u, " > + "region '%s', reason: unaligned\n", > + addr, size, memory_region_name(mr)); > return false; > } > > @@ -1367,6 +1376,13 @@ bool memory_region_access_valid(MemoryRegion *mr, > > if (size > mr->ops->valid.max_access_size > || size < mr->ops->valid.min_access_size) { > + qemu_log_mask(LOG_GUEST_ERROR, "Invalid access at addr " > + "0x%" HWADDR_PRIX ", size %u, " > + "region '%s', reason: invalid size " > + "(min:%u max:%u)\n", > + addr, size, memory_region_name(mr), > + mr->ops->valid.min_access_size, > + mr->ops->valid.max_access_size); > return false; > } > return true; > Applied to my trivial-patches branch. Thanks, Laurent
diff --git a/softmmu/memory.c b/softmmu/memory.c index fa280a19f7..403ff3abc9 100644 --- a/softmmu/memory.c +++ b/softmmu/memory.c @@ -14,6 +14,7 @@ */ #include "qemu/osdep.h" +#include "qemu/log.h" #include "qapi/error.h" #include "cpu.h" #include "exec/memory.h" @@ -1353,10 +1354,18 @@ bool memory_region_access_valid(MemoryRegion *mr, { if (mr->ops->valid.accepts && !mr->ops->valid.accepts(mr->opaque, addr, size, is_write, attrs)) { + qemu_log_mask(LOG_GUEST_ERROR, "Invalid access at addr " + "0x%" HWADDR_PRIX ", size %u, " + "region '%s', reason: rejected\n", + addr, size, memory_region_name(mr)); return false; } if (!mr->ops->valid.unaligned && (addr & (size - 1))) { + qemu_log_mask(LOG_GUEST_ERROR, "Invalid access at addr " + "0x%" HWADDR_PRIX ", size %u, " + "region '%s', reason: unaligned\n", + addr, size, memory_region_name(mr)); return false; } @@ -1367,6 +1376,13 @@ bool memory_region_access_valid(MemoryRegion *mr, if (size > mr->ops->valid.max_access_size || size < mr->ops->valid.min_access_size) { + qemu_log_mask(LOG_GUEST_ERROR, "Invalid access at addr " + "0x%" HWADDR_PRIX ", size %u, " + "region '%s', reason: invalid size " + "(min:%u max:%u)\n", + addr, size, memory_region_name(mr), + mr->ops->valid.min_access_size, + mr->ops->valid.max_access_size); return false; } return true;
Log invalid memory accesses with as GUEST_ERROR. This is particularly useful since commit 5d971f9e67 which reverted ("memory: accept mismatching sizes in memory_region_access_valid"). Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> --- softmmu/memory.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)