This is a note to let you know that I've just added the patch titled bug: Remove redundant condition check in report_bug to the 5.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: bug-remove-redundant-condition-check-in-report_bug.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit f82bcc5baccdfad36be308b4d8967d698ad94bbd Author: Andrew Scull <ascull@xxxxxxxxxx> Date: Thu Mar 18 14:33:07 2021 +0000 bug: Remove redundant condition check in report_bug [ Upstream commit 3ad1a6cb0abc63d036fc866bd7c2c5983516dec5 ] report_bug() will return early if it cannot find a bug corresponding to the provided address. The subsequent test for the bug will always be true so remove it. Fixes: 1b4cfe3c0a30d ("lib/bug.c: exclude non-BUG/WARN exceptions from report_bug()") Signed-off-by: Andrew Scull <ascull@xxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: "Steven Rostedt (VMware)" <rostedt@xxxxxxxxxxx> Reviewed-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx> Acked-by: Will Deacon <will@xxxxxxxxxx> Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx> Link: https://lore.kernel.org/r/20210318143311.839894-2-ascull@xxxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/lib/bug.c b/lib/bug.c index 7103440c0ee1..4ab398a2de93 100644 --- a/lib/bug.c +++ b/lib/bug.c @@ -158,30 +158,27 @@ enum bug_trap_type report_bug(unsigned long bugaddr, struct pt_regs *regs) file = NULL; line = 0; - warning = 0; - if (bug) { #ifdef CONFIG_DEBUG_BUGVERBOSE #ifndef CONFIG_GENERIC_BUG_RELATIVE_POINTERS - file = bug->file; + file = bug->file; #else - file = (const char *)bug + bug->file_disp; + file = (const char *)bug + bug->file_disp; #endif - line = bug->line; + line = bug->line; #endif - warning = (bug->flags & BUGFLAG_WARNING) != 0; - once = (bug->flags & BUGFLAG_ONCE) != 0; - done = (bug->flags & BUGFLAG_DONE) != 0; - - if (warning && once) { - if (done) - return BUG_TRAP_TYPE_WARN; - - /* - * Since this is the only store, concurrency is not an issue. - */ - bug->flags |= BUGFLAG_DONE; - } + warning = (bug->flags & BUGFLAG_WARNING) != 0; + once = (bug->flags & BUGFLAG_ONCE) != 0; + done = (bug->flags & BUGFLAG_DONE) != 0; + + if (warning && once) { + if (done) + return BUG_TRAP_TYPE_WARN; + + /* + * Since this is the only store, concurrency is not an issue. + */ + bug->flags |= BUGFLAG_DONE; } /*