From: Alexey Kardashevskiy <aik@ozlabs.ru>
To: linux-kernel@vger.kernel.org
Cc: Alexey Kardashevskiy <aik@ozlabs.ru>,
Nicholas Piggin <npiggin@gmail.com>
Subject: [PATCH kernel] panic: Dump registers on panic_on_warn
Date: Tue, 30 Jun 2020 19:38:46 +1000 [thread overview]
Message-ID: <20200630093846.100531-1-aik@ozlabs.ru> (raw)
Currently we print stack and registers for ordinary warnings but
we do not for panic_on_warn which looks as oversight - panic()
will reboot the machine but won't print registers.
This moves printing of registers and modules earlier.
This does not move the stack dumping as panic() dumps it.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
---
kernel/panic.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/kernel/panic.c b/kernel/panic.c
index e2157ca387c8..798eff8156f3 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -589,6 +589,11 @@ void __warn(const char *file, int line, void *caller, unsigned taint,
if (args)
vprintk(args->fmt, args->args);
+ print_modules();
+
+ if (regs)
+ show_regs(regs);
+
if (panic_on_warn) {
/*
* This thread may hit another WARN() in the panic path.
@@ -600,12 +605,7 @@ void __warn(const char *file, int line, void *caller, unsigned taint,
panic("panic_on_warn set ...\n");
}
- print_modules();
-
- if (regs)
- show_regs(regs);
- else
- dump_stack();
+ dump_stack();
print_irqtrace_events(current);
--
2.17.1
next reply other threads:[~2020-06-30 9:39 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-30 9:38 Alexey Kardashevskiy [this message]
2020-07-29 8:24 ` Alexey Kardashevskiy
2020-07-29 8:35 ` Greg Kroah-Hartman
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