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In annotate_browser__mark_jump_targets 702 dlt = browser->offsets[dl->ops.target]; 703 bdlt = disasm_line__browser(dlt); 704 bdlt->jump_target = true; 705 } 706 707 } (gdb) p size $5 = 2415 (gdb) p offset $6 = 140 (gdb) p dl->ops.target $7 = 143 (gdb) p browser->offsets[143] $8 = (struct disasm_line *) 0x0 (gdb) p dl->name $9 = 0x2363bd0 "je" (gdb) Really strange, the code assumed that at the jump target we would have an assembly line, but only in the previous instruction offset we have a 'lock': (gdb) p browser->offsets[144] $10 = (struct disasm_line *) 0x0 (gdb) p browser->offsets[142] $11 = (struct disasm_line *) 0x27bd620 (gdb) p browser->offsets[142]->name $12 = 0x237a8a0 "lock" (gdb) I'll study this more, but for now I'll just check if there is a disasm_line at dl->ops.target, i.e. a valid jump target. Reported-by: Hagen Paul Pfeifer <hagen@jauu.net> Reported-by: Ingo Molnar <mingo@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-inzjrzyqhkzyv78met2vula6@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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