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scylla-gdb: Fix bounds checking in scylla ptr command

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Message-Id: <1468951987-10184-1-git-send-email-tgrabiec@scylladb.com>
This commit is contained in:
Tomasz Grabiec
2016-07-19 20:13:07 +02:00
committed by Avi Kivity
parent 64dff69077
commit d2f0711608
1 changed files with 3 additions and 2 deletions
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5
scylla-gdb.py
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@@ -191,11 +191,12 @@ class scylla_ptr(gdb.Command):
msg += ', small (size <= %d)' % object_size
offset_in_object = offset_in_span % object_size
free_object_ptr = gdb.lookup_type('void').pointer().pointer()
char_ptr = gdb.lookup_type('char').pointer()
# pool's free list
next_free = pool['_free']
free = False
while next_free:
if ptr >= next_free and ptr < next_free + object_size:
if ptr >= next_free and ptr < next_free.reinterpret_cast(char_ptr) + object_size:
free = True
break
next_free = next_free.reinterpret_cast(free_object_ptr).dereference()
@@ -203,7 +204,7 @@ class scylla_ptr(gdb.Command):
# span's free list
next_free = first_page_in_span['freelist']
while next_free:
if ptr >= next_free and ptr < next_free + object_size:
if ptr >= next_free and ptr < next_free.reinterpret_cast(char_ptr) + object_size:
free = True
break
next_free = next_free.reinterpret_cast(free_object_ptr).dereference()