From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <3DA30B28.8070504@us.ibm.com> Date: Tue, 08 Oct 2002 09:43:20 -0700 From: Dave Hansen MIME-Version: 1.0 Subject: Re: 2.5.40-mm2 References: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Ingo Molnar Cc: Andrew Morton , lkml , "linux-mm@kvack.org" List-ID: Ingo Molnar wrote: > On Sun, 6 Oct 2002, Dave Hansen wrote: > >>cc'ing Ingo, because I think this might be related to the timer bh >>removal. > > could you try the attached patch against 2.5.41, does it help? It fixes > the bugs found so far plus makes del_timer_sync() a bit more robust by > re-checking timer pending-ness before exiting. There is one type of code > that might have relied on this kind of behavior of the old timer code. Hehe. That'll teach me to be optimistic. This is unprocessed, but the EIP in tvec_bases should tell the whole story. Something _nasty_ is going on. addr2line on the run_timer_tasklet call: kernel/timer.c:359 This is with the patch that Ingo sent me about 6 hours ago. Andrew, should I still test the one that you sent me this morning? CPU: 7 EIP: 0060:[<80382bd2>] Not tainted EFLAGS: 00010a02 EIP is at tvec_bases+0x7152/0x20400 eax: e4a2d9a0 ebx: 80382bd0 ecx: 80382bd8 edx: 80382fd0 esi: 80382bc8 edi: 80382b60 ebp: 00000001 esp: f4d71db0 ds: 0068 es: 0068 ss: 0068 Process httpd (pid: 2554, threadinfo=f4d70000 task=f4d727c0) Stack: 8012038b 80382bd8 8b093288 00000000 f4d70000 8011d1e5 00000000 00000001 8037b960 fffffffa 000000e0 80360264 80360264 8011ceea 8037b960 f4d70000 00000001 00000001 e4bf0930 00000246 80257ed0 e4bf07c0 f4d71eec f4d71eb8 Call Trace: [<8012038b>] run_timer_tasklet+0xcf/0x118 [<8011d1e5>] tasklet_hi_action+0x85/0xe0 [<8011ceea>] do_softirq+0x5a/0xac [<80257ed0>] tcp_sendmsg+0x10b8/0x11f4 [<80273726>] inet_sendmsg+0x42/0x48 [<8023bf0e>] sock_sendmsg+0x72/0x94 [<8023c220>] sock_readv_writev+0x94/0xa0 [<8023c29b>] sock_writev+0x37/0x40 [<8013f94a>] do_readv_writev+0x186/0x278 [<8023c07c>] sock_write+0x0/0xb0 [<8013f4d7>] vfs_read+0xb7/0x128 [<8013fb02>] sys_writev+0x5a/0x6c [<801070b3>] syscall_call+0x7/0xb Code: 38 80 d0 2b 38 80 d8 2b 38 80 00 00 00 00 e0 2b 38 80 e0 2b <0>Kernel panic: Aiee, killing interrupt handler! In interrupt handler - not syncing -- Dave Hansen haveblue@us.ibm.com -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/