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| author | Josh Poimboeuf <jpoimboe@redhat.com> | 2020-04-28 16:45:16 -0500 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2020-05-07 17:22:31 +0200 |
| commit | 1119d265bc20226c241e5540fc8a246d9e30b272 (patch) | |
| tree | 322ca3376268851548322f333f58160865366abe /mm | |
| parent | 0e698dfa282211e414076f9dc7e83c1c288314fd (diff) | |
objtool: Fix infinite loop in find_jump_table()objtool-urgent-2020-05-10
Kristen found a hang in objtool when building with -ffunction-sections.
It was caused by evergreen_pcie_gen2_enable.cold() being laid out
immediately before evergreen_pcie_gen2_enable(). Since their "pfunc" is
always the same, find_jump_table() got into an infinite loop because it
didn't recognize the boundary between the two functions.
Fix that with a new prev_insn_same_sym() helper, which doesn't cross
subfunction boundaries.
Reported-by: Kristen Carlson Accardi <kristen@linux.intel.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/378b51c9d9c894dc3294bc460b4b0869e950b7c5.1588110291.git.jpoimboe@redhat.com
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions