linux-kernel - Re: [crash] kernel BUG at net/core/pktgen.c:3503!

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 15 Sep 2009 22:51:12 +0400
From:	Cyrill Gorcunov <gorcunov@...il.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	David Miller <davem@...emloft.net>, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [crash] kernel BUG at net/core/pktgen.c:3503!

[Ingo Molnar - Tue, Sep 15, 2009 at 08:36:47PM +0200]
| 
| not sure which merge caused this, but i got this boot crash with latest 
| -git:
| 
| calling  flow_cache_init+0x0/0x1b9 @ 1
| initcall flow_cache_init+0x0/0x1b9 returned 0 after 64 usecs
| calling  pg_init+0x0/0x37c @ 1
| pktgen 2.72: Packet Generator for packet performance testing.
| ------------[ cut here ]------------
| kernel BUG at net/core/pktgen.c:3503!
| invalid opcode: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC
| last sysfs file: 
| 

Hi Ingo,

just curious, will the following patch fix the problem?
I've been fixing problem with familiar symthoms on
system with custome virtual cpu implementation so
it may not help in mainline but anyway :)

	-- Cyrill
---
 net/core/pktgen.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6.git/net/core/pktgen.c
=====================================================================
--- linux-2.6.git.orig/net/core/pktgen.c
+++ linux-2.6.git/net/core/pktgen.c
@@ -3511,7 +3511,7 @@ static int pktgen_thread_worker(void *ar
 	struct pktgen_dev *pkt_dev = NULL;
 	int cpu = t->cpu;
 
-	BUG_ON(smp_processor_id() != cpu);
+	BUG_ON(task_cpu(current) != cpu);
 
 	init_waitqueue_head(&t->queue);
 	complete(&t->start_done);
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/