Bug 164926
| Summary: | [GTK] Memory corruption causes web process crash in WebCore::createStyleContext | ||
|---|---|---|---|
| Product: | WebKit | Reporter: | Michael Catanzaro <mcatanzaro> |
| Component: | WebKitGTK | Assignee: | Nobody <webkit-unassigned> |
| Status: | NEW | ||
| Severity: | Normal | CC: | bugs-noreply, mcatanzaro |
| Priority: | P2 | ||
| Version: | WebKit Nightly Build | ||
| Hardware: | PC | ||
| OS: | Linux | ||
| See Also: | https://bugzilla.redhat.com/show_bug.cgi?id=1371065 | ||
Michael Catanzaro
Memory corruption causes web process crash in WebCore::createStyleContext. Only one report of this ever, with 2.12.4. Unfortunately I have no valgrind memcheck for this.
Truncated backtrace:
Thread no. 1 (10 frames)
#6 g_malloc at gmem.c:94
#7 g_data_set_internal at gdataset.c:464
#8 g_datalist_id_set_data_full at gdataset.c:670
#9 g_object_notify_queue_freeze at gobject.c:242
#10 g_object_init at gobject.c:975
#11 g_type_create_instance at gtype.c:1869
#12 g_object_new_internal at gobject.c:1781
#15 gtk_css_path_node_new at gtkcsspathnode.c:142
#16 gtk_style_context_init at gtkstylecontext.c:355
#17 g_type_create_instance at gtype.c:1875
Full backtrace downstream. Importantly:
#3 0x00007f904cc96c13 in malloc_printerr (ar_ptr=0x3, ptr=<optimized out>, str=0x7f904cda3250 "malloc(): smallbin double linked list corrupted", action=3) at malloc.c:5004
buf = "000056427ea9ba30"
cp = <optimized out>
ar_ptr = 0x3
ptr = <optimized out>
str = 0x7f904cda3250 "malloc(): smallbin double linked list corrupted"
action = 3
| Attachments | ||
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| Add attachment proposed patch, testcase, etc. |
Michael Catanzaro
Note: last time we had a crash like this, it was an Epiphany bug in an unrelated part of code, due to forgetting to remove a weak pointer. Epiphany is not a likely culprit here since this is web process.