The patch titled Subject: mm/mmap.c: use pr_emerg when printing BUG related information has been removed from the -mm tree. Its filename was mm-mmap-use-pr_emerg-when-printing-bug-related-information.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Sasha Levin <sasha.levin@xxxxxxxxxx> Subject: mm/mmap.c: use pr_emerg when printing BUG related information Make sure we actually see the output of validate_mm() and browse_rb() before triggering a BUG(). pr_info isn't shown by default so the reason for the BUG() isn't obvious. Signed-off-by: Sasha Levin <sasha.levin@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/mmap.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff -puN mm/mmap.c~mm-mmap-use-pr_emerg-when-printing-bug-related-information mm/mmap.c --- a/mm/mmap.c~mm-mmap-use-pr_emerg-when-printing-bug-related-information +++ a/mm/mmap.c @@ -369,20 +369,20 @@ static int browse_rb(struct rb_root *roo struct vm_area_struct *vma; vma = rb_entry(nd, struct vm_area_struct, vm_rb); if (vma->vm_start < prev) { - pr_info("vm_start %lx prev %lx\n", vma->vm_start, prev); + pr_emerg("vm_start %lx prev %lx\n", vma->vm_start, prev); bug = 1; } if (vma->vm_start < pend) { - pr_info("vm_start %lx pend %lx\n", vma->vm_start, pend); + pr_emerg("vm_start %lx pend %lx\n", vma->vm_start, pend); bug = 1; } if (vma->vm_start > vma->vm_end) { - pr_info("vm_end %lx < vm_start %lx\n", + pr_emerg("vm_end %lx < vm_start %lx\n", vma->vm_end, vma->vm_start); bug = 1; } if (vma->rb_subtree_gap != vma_compute_subtree_gap(vma)) { - pr_info("free gap %lx, correct %lx\n", + pr_emerg("free gap %lx, correct %lx\n", vma->rb_subtree_gap, vma_compute_subtree_gap(vma)); bug = 1; @@ -396,7 +396,7 @@ static int browse_rb(struct rb_root *roo for (nd = pn; nd; nd = rb_prev(nd)) j++; if (i != j) { - pr_info("backwards %d, forwards %d\n", j, i); + pr_emerg("backwards %d, forwards %d\n", j, i); bug = 1; } return bug ? -1 : i; @@ -431,17 +431,17 @@ static void validate_mm(struct mm_struct i++; } if (i != mm->map_count) { - pr_info("map_count %d vm_next %d\n", mm->map_count, i); + pr_emerg("map_count %d vm_next %d\n", mm->map_count, i); bug = 1; } if (highest_address != mm->highest_vm_end) { - pr_info("mm->highest_vm_end %lx, found %lx\n", + pr_emerg("mm->highest_vm_end %lx, found %lx\n", mm->highest_vm_end, highest_address); bug = 1; } i = browse_rb(&mm->mm_rb); if (i != mm->map_count) { - pr_info("map_count %d rb %d\n", mm->map_count, i); + pr_emerg("map_count %d rb %d\n", mm->map_count, i); bug = 1; } BUG_ON(bug); _ Patches currently in -mm which might be from sasha.levin@xxxxxxxxxx are origin.patch fs-notify-groupc-make-fsnotify_final_destroy_group-static.patch fsnotify-dont-put-user-context-if-it-was-never-assigned.patch mm-balloon_compaction-ignore-anonymous-pages.patch introduce-dump_vma.patch introduce-dump_vma-fix.patch introduce-dump_vma-fix-2.patch introduce-vm_bug_on_vma.patch convert-a-few-vm_bug_on-callers-to-vm_bug_on_vma.patch convert-a-few-vm_bug_on-callers-to-vm_bug_on_vma-checkpatch-fixes.patch mm-mmapc-clean-up-config_debug_vm_rb-checks.patch mm-move-debug-code-out-of-page_allocc.patch mm-introduce-vm_bug_on_mm.patch mm-introduce-vm_bug_on_mm-checkpatch-fixes.patch mm-use-vm_bug_on_mm-where-possible.patch mm-debugc-use-pr_emerg.patch vmstat-on-demand-vmstat-workers-v8-fix-2.patch mm-introduce-do_shared_fault-and-drop-do_fault-fix-fix.patch do_shared_fault-check-that-mmap_sem-is-held.patch mm-replace-remap_file_pages-syscall-with-emulation.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html