tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git WIP.core/stacktrace head: 63c35ea6b829a0f98d307a8dec038095681ecd13 commit: 88e5708cae1e9cb0cca97bb0af5866ac54532ceb [37/47] lockdep: Simplify stack trace handling config: i386-randconfig-x018-201915 (attached as .config) compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 reproduce: git checkout 88e5708cae1e9cb0cca97bb0af5866ac54532ceb # save the attached .config to linux build tree make ARCH=i386
All errors (new ones prefixed by >>):
kernel/locking/lockdep.c: In function 'print_usage_bug':
>> kernel/locking/lockdep.c:2806:2: error: implicit declaration of function
>> 'print_lock_trace'; did you mean 'print_lock_name'?
>> [-Werror=implicit-function-declaration]
print_lock_trace(hlock_class(this)->usage_traces + prev_bit, 1);
^~~~~~~~~~~~~~~~
print_lock_name
cc1: some warnings being treated as errors
vim +2806 kernel/locking/lockdep.c
2780
2781 static int
2782 print_usage_bug(struct task_struct *curr, struct held_lock *this,
2783 enum lock_usage_bit prev_bit, enum lock_usage_bit
new_bit)
2784 {
2785 if (!debug_locks_off_graph_unlock() || debug_locks_silent)
2786 return 0;
2787
2788 pr_warn("\n");
2789 pr_warn("================================\n");
2790 pr_warn("WARNING: inconsistent lock state\n");
2791 print_kernel_ident();
2792 pr_warn("--------------------------------\n");
2793
2794 pr_warn("inconsistent {%s} -> {%s} usage.\n",
2795 usage_str[prev_bit], usage_str[new_bit]);
2796
2797 pr_warn("%s/%d [HC%u[%lu]:SC%u[%lu]:HE%u:SE%u] takes:\n",
2798 curr->comm, task_pid_nr(curr),
2799 trace_hardirq_context(curr), hardirq_count() >>
HARDIRQ_SHIFT,
2800 trace_softirq_context(curr), softirq_count() >>
SOFTIRQ_SHIFT,
2801 trace_hardirqs_enabled(curr),
2802 trace_softirqs_enabled(curr));
2803 print_lock(this);
2804
2805 pr_warn("{%s} state was registered at:\n", usage_str[prev_bit]);
> 2806 print_lock_trace(hlock_class(this)->usage_traces + prev_bit, 1);
2807
2808 print_irqtrace_events(curr);
2809 pr_warn("\nother info that might help us debug this:\n");
2810 print_usage_bug_scenario(this);
2811
2812 lockdep_print_held_locks(curr);
2813
2814 pr_warn("\nstack backtrace:\n");
2815 dump_stack();
2816
2817 return 0;
2818 }
2819
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0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
.config.gz
Description: application/gzip
