From: Tiezhu Yang yangtiezhu@loongson.cn
commit e7ce7500375a63348e1d3a703c8d5003cbe3fea6 upstream.
panic_on_warn is unset inside panic(), so no need to unset it before calling panic() in end_report().
Link: https://lkml.kernel.org/r/1644324666-15947-6-git-send-email-yangtiezhu@loong... Signed-off-by: Tiezhu Yang yangtiezhu@loongson.cn Reviewed-by: Marco Elver elver@google.com Cc: Andrey Ryabinin ryabinin.a.a@gmail.com Cc: Baoquan He bhe@redhat.com Cc: Jonathan Corbet corbet@lwn.net Cc: Xuefeng Li lixuefeng@loongson.cn Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Eric Biggers ebiggers@google.com Signed-off-by: Sasha Levin sashal@kernel.org --- mm/kasan/report.c | 10 +--------- 1 file changed, 1 insertion(+), 9 deletions(-)
diff --git a/mm/kasan/report.c b/mm/kasan/report.c index 884a950c7026..bf17704b302f 100644 --- a/mm/kasan/report.c +++ b/mm/kasan/report.c @@ -117,16 +117,8 @@ static void end_report(unsigned long *flags, unsigned long addr) pr_err("==================================================================\n"); add_taint(TAINT_BAD_PAGE, LOCKDEP_NOW_UNRELIABLE); spin_unlock_irqrestore(&report_lock, *flags); - if (panic_on_warn && !test_bit(KASAN_BIT_MULTI_SHOT, &kasan_flags)) { - /* - * This thread may hit another WARN() in the panic path. - * Resetting this prevents additional WARN() from panicking the - * system on this thread. Other threads are blocked by the - * panic_mutex in panic(). - */ - panic_on_warn = 0; + if (panic_on_warn && !test_bit(KASAN_BIT_MULTI_SHOT, &kasan_flags)) panic("panic_on_warn set ...\n"); - } if (kasan_arg_fault == KASAN_ARG_FAULT_PANIC) panic("kasan.fault=panic set ...\n"); kasan_enable_current();