This is a backported patch from gdb. Without the patch, the "dis -rl" command may abort due to an assertion failure in the gdb's dw2_find_pc_sect_compunit_symtab(): crash> dis -rl ffffffff96ad716c dwarf2/read.c:4928: internal-error: compunit_symtab* dw2_find_pc_sect_compunit_symtab(objfile*, bound_minimal_symbol, CORE_ADDR, obj_section*, int): Assertion `result != NULL' failed. A problem internal to GDB has been detected, further debugging may prove unreliable. Quit this debugging session? (y or n) dwarf2/read.c:4928: internal-error: compunit_symtab* dw2_find_pc_sect_compunit_symtab(objfile*, bound_minimal_symbol, CORE_ADDR, obj_section*, int): Assertion `result != NULL' failed. A problem internal to GDB has been detected, further debugging may prove unreliable. Aborted (core dumped) The gdb commit 834eaf9201c1 ("Fix crash in new DWARF indexer") solved the current issue. Reported-by: Buland Kumar Singh <bsingh(a)redhat.com&gt; Signed-off-by: Lianbo Jiang <lijiang(a)redhat.com&gt; --- gdb-10.2.patch | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/gdb-10.2.patch b/gdb-10.2.patch index aa34743501ad..d762680eb472 100644 --- a/gdb-10.2.patch +++ b/gdb-10.2.patch @@ -12,7 +12,8 @@ tar xvzmf gdb-10.2.tar.gz \ gdb-10.2/gdb/symtab.c \ gdb-10.2/gdb/printcmd.c \ gdb-10.2/gdb/symfile.c \ - gdb-10.2/gdb/Makefile.in + gdb-10.2/gdb/Makefile.in \ + gdb-10.2/gdb/dwarf2/read.c exit 0 @@ -2078,3 +2079,16 @@ exit 0 return new_type; } +--- gdb-10.2/gdb/dwarf2/read.c.orig ++++ gdb-10.2/gdb/dwarf2/read.c +@@ -4925,7 +4925,10 @@ dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, + result = recursively_find_pc_sect_compunit_symtab + (dw2_instantiate_symtab (data, per_objfile, false), pc); + +- gdb_assert (result != NULL); ++ if (warn_if_readin && result == nullptr) ++ warning (_("(Error: pc %s in address map, but not in symtab.)"), ++ paddress (objfile->arch (), pc)); ++ + return result; + } -- 2.37.1