tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/dev head: f09c1acfaa4b198694a31ba3e454c7d17c4fa680 commit: f09c1acfaa4b198694a31ba3e454c7d17c4fa680 [46/46] rcu: Add consistency checks for uses of segmented callback lists config: tile-allmodconfig (attached as .config) compiler: tilegx-linux-gcc (GCC) 4.6.2 reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout f09c1acfaa4b198694a31ba3e454c7d17c4fa680 # save the attached .config to linux build tree make.cross ARCH=tile
All errors (new ones prefixed by >>): kernel/rcu/tree.c: In function 'rcu_do_batch': kernel/rcu/tree.c:2785:2: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:2785:2: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:2819:2: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:2819:2: warning: '__x' may be used uninitialized in this function [-Wuninitialized] >> kernel/rcu/tree.c:2785:2: error: call to '__xchg_called_with_bad_pointer' >> declared with attribute error: Bad argument size for xchg >> kernel/rcu/tree.c:2785:2: error: call to '__xchg_called_with_bad_pointer' >> declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c:2819:2: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c:2819:2: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c: In function 'rcu_start_future_gp': kernel/rcu/tree.c:1745:3: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:1745:3: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:1747:3: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:1747:3: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:1745:3: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c:1745:3: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c:1747:3: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c:1747:3: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c: In function 'rcu_start_gp': kernel/rcu/tree.c:2374:2: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:2374:2: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:2376:2: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:2376:2: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:2374:2: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c:2374:2: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c:2376:2: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c:2376:2: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c: In function '__note_gp_changes': kernel/rcu/tree.c:1897:3: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:1897:3: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:1899:3: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:1899:3: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:1904:3: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:1904:3: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:1906:3: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:1906:3: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:1897:3: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c:1897:3: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c:1899:3: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c:1899:3: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c:1904:3: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c:1904:3: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c:1906:3: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c:1906:3: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c: In function 'rcu_gp_cleanup': kernel/rcu/tree.c:2195:2: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:2195:2: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:2197:2: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:2197:2: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:2195:2: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c:2195:2: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c:2197:2: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c:2197:2: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c: In function 'rcu_report_qs_rdp': kernel/rcu/tree.c:2539:3: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:2539:3: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:2541:3: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:2541:3: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:2539:3: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c:2539:3: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c:2541:3: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c:2541:3: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg In file included from kernel/rcu/tree.c:4255:0: kernel/rcu/tree_plugin.h: In function 'init_nocb_callback_list': kernel/rcu/tree_plugin.h:2408:3: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree_plugin.h:2408:3: warning: '__x' may be used uninitialized in this function [-Wuninitialized] >> kernel/rcu/tree_plugin.h:2408:3: error: call to >> '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument >> size for xchg >> kernel/rcu/tree_plugin.h:2408:3: error: call to >> '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument >> size for xchg kernel/rcu/tree.c: In function 'rcu_init_percpu_data': kernel/rcu/tree.c:3793:3: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:3793:3: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:3793:3: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c:3793:3: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c: In function '__call_rcu': kernel/rcu/tree.c:3154:3: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:3154:3: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:3183:3: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:3183:3: warning: '__x' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/tree.c:3154:3: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c:3154:3: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c:3183:3: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg kernel/rcu/tree.c:3183:3: error: call to '__xchg_called_with_bad_pointer' declared with attribute error: Bad argument size for xchg vim +/__xchg_called_with_bad_pointer +2785 kernel/rcu/tree.c 2779 * Extract the list of ready callbacks, disabling to prevent 2780 * races with call_rcu() from interrupt handlers. Leave the 2781 * callback counts, as rcu_barrier() needs to be conservative. 2782 */ 2783 local_irq_save(flags); 2784 WARN_ON_ONCE(cpu_is_offline(smp_processor_id())); > 2785 rcu_segcblist_fsck(&rdp->cblist, 100); 2786 bl = rdp->blimit; 2787 trace_rcu_batch_start(rsp->name, rcu_segcblist_n_lazy_cbs(&rdp->cblist), 2788 rcu_segcblist_n_cbs(&rdp->cblist), bl); --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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