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bf96e296d5
dso__libdw_dwfl() opens the Dwfl with dso__long_name(), the file the
samples came from. When the debug information lives in a separate file,
symbol loading finds it and records it as the dso's symsrc filename, but
the Dwfl still refers to the original file, so libdw has no DWARF to
resolve addresses against.
Open the Dwfl with the symsrc filename when one is known and fall back
to the long name when it isn't.
The symsrc file is found while symbols are loaded, which can happen
after the Dwfl has been created and cached, so drop the cached Dwfl and
the addr2line cache built from it when the symsrc filename is set. That
teardown can run while another thread is using the cache, so take the
dso lock across both the teardown and the Dwfl accessors, and re-read
dso__symsrc_filename() under the dso lock in libbfd__addr2line() and
cmd__addr2line() to prevent a TOCTOU race with cache invalidation.
Fixes:
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|---|---|---|
| .. | ||
| accounting | ||
| arch | ||
| bootconfig | ||
| bpf | ||
| build | ||
| certs | ||
| cgroup | ||
| counter | ||
| crypto | ||
| debugging | ||
| dma | ||
| docs | ||
| firewire | ||
| firmware | ||
| gpio | ||
| hv | ||
| iio | ||
| include | ||
| kvm/kvm_stat | ||
| laptop | ||
| leds | ||
| lib | ||
| memory-model | ||
| mm | ||
| net | ||
| objtool | ||
| pcmcia | ||
| perf | ||
| platform/x86/amd | ||
| power | ||
| rcu | ||
| sched | ||
| sched_ext | ||
| scripts | ||
| sound | ||
| spi | ||
| testing | ||
| thermal | ||
| time | ||
| tracing | ||
| unittests | ||
| usb | ||
| verification | ||
| virtio | ||
| wmi | ||
| workqueue | ||
| writeback | ||
| Makefile | ||