removed idea of repos

author: davidovski <david@davidovski.xyz> 2022-05-31 11:05:19 +0100
committer: davidovski <david@davidovski.xyz> 2022-05-31 11:05:19 +0100
commit: 48ca75555522716f0f686dcae3dd6cf3d8ad714d (patch)
tree: 00c0f58550ba4661e87376f2f02c8001c69bae44 /repo/lua/fix-double-free.patch
parent: 871b2b573f01c1b3176a0f65458b3d281b41c437 (diff)
1 files changed, 402 insertions, 0 deletions
diff --git a/repo/lua/fix-double-free.patch b/repo/lua/fix-double-free.patch
new file mode 100644
index 0000000..2b6c476
--- /dev/null
+++ b/repo/lua/fix-double-free.patch
@@ -0,0 +1,402 @@
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+<a href='/aports/about/'>about</a><a href='/aports/'>summary</a><a href='/aports/refs/'>refs</a><a href='/aports/log/main/lua5.4/fix-double-free.patch'>log</a><a class='active' href='/aports/tree/main/lua5.4/fix-double-free.patch'>tree</a><a href='/aports/commit/main/lua5.4/fix-double-free.patch'>commit</a><a href='/aports/diff/main/lua5.4/fix-double-free.patch'>diff</a><a href='/aports/stats/main/lua5.4/fix-double-free.patch'>stats</a></td><td class='form'><form class='right' method='get' action='/aports/log/main/lua5.4/fix-double-free.patch'>
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+<div class='path'>path: <a href='/aports/tree/'>root</a>/<a href='/aports/tree/main'>main</a>/<a href='/aports/tree/main/lua5.4'>lua5.4</a>/<a href='/aports/tree/main/lua5.4/fix-double-free.patch'>fix-double-free.patch</a></div><div class='content'>blob: ad87fafc29d2694ba5daf79d5afc337ef1cfa84b (<a href='/aports/plain/main/lua5.4/fix-double-free.patch'>plain</a>) (<a href='/aports/blame/main/lua5.4/fix-double-free.patch'>blame</a>)
+<table summary='blob content' class='blob'>
+<tr><td class='linenumbers'><pre><a id='n1' href='#n1'>1</a>
+<a id='n2' href='#n2'>2</a>
+<a id='n3' href='#n3'>3</a>
+<a id='n4' href='#n4'>4</a>
+<a id='n5' href='#n5'>5</a>
+<a id='n6' href='#n6'>6</a>
+<a id='n7' href='#n7'>7</a>
+<a id='n8' href='#n8'>8</a>
+<a id='n9' href='#n9'>9</a>
+<a id='n10' href='#n10'>10</a>
+<a id='n11' href='#n11'>11</a>
+<a id='n12' href='#n12'>12</a>
+<a id='n13' href='#n13'>13</a>
+<a id='n14' href='#n14'>14</a>
+<a id='n15' href='#n15'>15</a>
+<a id='n16' href='#n16'>16</a>
+<a id='n17' href='#n17'>17</a>
+<a id='n18' href='#n18'>18</a>
+<a id='n19' href='#n19'>19</a>
+<a id='n20' href='#n20'>20</a>
+<a id='n21' href='#n21'>21</a>
+<a id='n22' href='#n22'>22</a>
+<a id='n23' href='#n23'>23</a>
+<a id='n24' href='#n24'>24</a>
+<a id='n25' href='#n25'>25</a>
+<a id='n26' href='#n26'>26</a>
+<a id='n27' href='#n27'>27</a>
+<a id='n28' href='#n28'>28</a>
+<a id='n29' href='#n29'>29</a>
+<a id='n30' href='#n30'>30</a>
+<a id='n31' href='#n31'>31</a>
+<a id='n32' href='#n32'>32</a>
+<a id='n33' href='#n33'>33</a>
+<a id='n34' href='#n34'>34</a>
+<a id='n35' href='#n35'>35</a>
+<a id='n36' href='#n36'>36</a>
+<a id='n37' href='#n37'>37</a>
+<a id='n38' href='#n38'>38</a>
+<a id='n39' href='#n39'>39</a>
+<a id='n40' href='#n40'>40</a>
+<a id='n41' href='#n41'>41</a>
+<a id='n42' href='#n42'>42</a>
+<a id='n43' href='#n43'>43</a>
+<a id='n44' href='#n44'>44</a>
+<a id='n45' href='#n45'>45</a>
+<a id='n46' href='#n46'>46</a>
+<a id='n47' href='#n47'>47</a>
+<a id='n48' href='#n48'>48</a>
+<a id='n49' href='#n49'>49</a>
+<a id='n50' href='#n50'>50</a>
+<a id='n51' href='#n51'>51</a>
+<a id='n52' href='#n52'>52</a>
+<a id='n53' href='#n53'>53</a>
+<a id='n54' href='#n54'>54</a>
+<a id='n55' href='#n55'>55</a>
+<a id='n56' href='#n56'>56</a>
+</pre></td>
+<td class='lines'><pre><code>Lua5.4 frees the lineinfo memory twice. Once via combine() and once
+via close_state() this causes a segfault on musl. The segfault double
+free can be fixed by having combine assign NULL to f-&gt;lineinfo after
+it has been freed. Thus not freeing it again in close_state().
+
+Valgrind output for the double-free:
+
+	==29903== Invalid free() / delete / delete[] / realloc()
+	==29903==    at 0x48A4B0D: free (in /usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
+	==29903==    by 0x11E5D2: l_alloc (lauxlib.c:1014)
+	==29903==    by 0x112F51: luaM_free_ (lmem.c:135)
+	==29903==    by 0x11111B: luaF_freeproto (lfunc.c:271)
+	==29903==    by 0x112ABB: deletelist (lgc.c:1494)
+	==29903==    by 0x112ABB: luaC_freeallobjects (lgc.c:1511)
+	==29903==    by 0x116D54: close_state (lstate.c:276)
+	==29903==    by 0x10B549: main (luac.c:210)
+	==29903==  Address 0x48ec220 is 0 bytes inside a block of size 10 free&#39;d
+	==29903==    at 0x48A4B0D: free (in /usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
+	==29903==    by 0x11E5D2: l_alloc (lauxlib.c:1014)
+	==29903==    by 0x112F51: luaM_free_ (lmem.c:135)
+	==29903==    by 0x10C60C: combine (luac.c:158)
+	==29903==    by 0x10C60C: pmain (luac.c:183)
+	==29903==    by 0x10FF38: precallC (ldo.c:506)
+	==29903==    by 0x11020C: luaD_precall (ldo.c:572)
+	==29903==    by 0x110340: ccall (ldo.c:607)
+	==29903==    by 0x10F7CA: luaD_rawrunprotected (ldo.c:144)
+	==29903==    by 0x110668: luaD_pcall (ldo.c:926)
+	==29903==    by 0x10DB2F: lua_pcallk (lapi.c:1067)
+	==29903==    by 0x10B528: main (luac.c:209)
+	==29903==  Block was alloc&#39;d at
+	==29903==    at 0x48A6FC9: realloc (in /usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
+	==29903==    by 0x112F7E: luaM_realloc_ (lmem.c:166)
+	==29903==    by 0x112FC5: luaM_saferealloc_ (lmem.c:180)
+	==29903==    by 0x113074: luaM_shrinkvector_ (lmem.c:116)
+	==29903==    by 0x114B02: close_func (lparser.c:764)
+	==29903==    by 0x116B1B: mainfunc (lparser.c:1937)
+	==29903==    by 0x116B1B: luaY_parser (lparser.c:1959)
+	==29903==    by 0x10F718: f_parser (ldo.c:971)
+	==29903==    by 0x10F7CA: luaD_rawrunprotected (ldo.c:144)
+	==29903==    by 0x110668: luaD_pcall (ldo.c:926)
+	==29903==    by 0x11074B: luaD_protectedparser (ldo.c:988)
+	==29903==    by 0x10DC13: lua_load (lapi.c:1097)
+	==29903==    by 0x10C5B1: combine (luac.c:151)
+	==29903==    by 0x10C5B1: pmain (luac.c:183)
+
+diff -upr lua5.4.4.orig/src/luac.c lua-5.4.4/src/luac.c
+<span style="color:#000000; font-weight:bold">--- lua5.4.4.orig/src/luac.c	2022-04-14 20:57:01.927447850 +0200</span>
+<span style="color:#0057ae">+++ lua-5.4.4/src/luac.c	2022-04-14 20:57:35.260900910 +0200</span>
+&#64;&#64; -156,6 +156,7 &#64;&#64; static const Proto* combine(lua_State* L
+    if (f-&gt;p[i]-&gt;sizeupvalues&gt;0) f-&gt;p[i]-&gt;upvalues[0].instack=0;
+   }
+   luaM_freearray(L,f-&gt;lineinfo,f-&gt;sizelineinfo);
+<span style="color:#0057ae">+  f-&gt;lineinfo=NULL;</span>
+   f-&gt;sizelineinfo=0;
+   return f;
+  }
+</code></pre></td></tr></table>
+</div> <!-- class=content -->
+<div class='footer'>generated by <a href='https://git.zx2c4.com/cgit/about/'>cgit v1.2.3</a> (<a href='https://git-scm.com/'>git 2.25.1</a>) at 2022-05-19 21:37:05 +0000</div>
+</div> <!-- id=cgit -->
+</body>
+</html>
author	davidovski <david@davidovski.xyz>	2022-05-31 11:05:19 +0100
committer	davidovski <david@davidovski.xyz>	2022-05-31 11:05:19 +0100
commit	48ca75555522716f0f686dcae3dd6cf3d8ad714d (patch)
tree	00c0f58550ba4661e87376f2f02c8001c69bae44 /repo/lua/fix-double-free.patch
parent	871b2b573f01c1b3176a0f65458b3d281b41c437 (diff)