From mboxrd@z Thu Jan 1 00:00:00 1970 From: akpm@linux-foundation.org Subject: [patch for 2.6.29? 2/2] scsi: mpt: suppress debugobjects warning Date: Wed, 04 Mar 2009 12:12:18 -0800 Message-ID: <200903042012.n24KCIKH030001@imap1.linux-foundation.org> Return-path: Received: from smtp1.linux-foundation.org ([140.211.169.13]:34908 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757554AbZCDU0o (ORCPT ); Wed, 4 Mar 2009 15:26:44 -0500 Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: James.Bottomley@HansenPartnership.com Cc: linux-scsi@vger.kernel.org, akpm@linux-foundation.org, eparis@parisplace.org, Eric.Moore@lsil.com, tglx@linutronix.de From: "Eric Paris" ODEBUG: object is on stack, but not annotated ------------[ cut here ]------------ WARNING: at lib/debugobjects.c:253 __debug_object_init+0x1f3/0x276() Hardware name: VMware Virtual Platform Modules linked in: mptspi(+) mptscsih mptbase scsi_transport_spi ext3 jbd mbcache Pid: 540, comm: insmod Not tainted 2.6.28-mm1 #2 Call Trace: [] warn_slowpath+0x74/0x8a [] ? start_critical_timing+0x96/0xb7 [] ? _spin_unlock_irqrestore+0x2f/0x3c [] ? trace_hardirqs_off_caller+0x18/0xaf [] ? trace_hardirqs_off+0xb/0xd [] ? _spin_unlock_irqrestore+0x2f/0x3c [] ? release_console_sem+0x1a5/0x1ad [] __debug_object_init+0x1f3/0x276 [] debug_object_init+0x13/0x17 [] init_timer+0x10/0x1a [] mpt_config+0x1c1/0x2b7 [mptbase] [] ? kmalloc+0x8/0xa [mptbase] [] ? kmalloc+0x8/0xa [mptbase] [] mpt_do_ioc_recovery+0x950/0x1212 [mptbase] [] ? __lock_acquire+0xa69/0xacc [] ? _spin_unlock_irqrestore+0x36/0x3c [] ? _spin_unlock_irq+0x22/0x26 [] ? string+0x2b/0x76 [] ? vsnprintf+0x338/0x7b3 [] ? __lock_acquire+0xa69/0xacc [] ? _spin_unlock_irqrestore+0x2f/0x3c [] ? __lock_acquire+0xa69/0xacc [] ? debug_check_no_locks_freed+0xeb/0x105 [] ? _spin_unlock_irqrestore+0x36/0x3c [] ? debug_check_no_locks_freed+0x2a/0x105 [] ? lock_release_holdtime+0x43/0x48 [] ? up_read+0x16/0x29 [] ? pci_get_slot+0x66/0x72 [] mpt_attach+0x881/0x9b1 [mptbase] [] mptspi_probe+0x11/0x354 [mptspi] Noticing that every caller of mpt_config has its CONFIGPARMS struct declared on the stack and thus the &pCfg->timer is always on the stack I changed init_timer() to init_timer_on_stack() and it seems to have shut up..... Cc: "Moore, Eric Dean" Cc: James Bottomley Cc: Thomas Gleixner Signed-off-by: Andrew Morton --- drivers/message/fusion/mptbase.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff -puN drivers/message/fusion/mptbase.c~scsi-mpt-suppress-debugobjects-warning drivers/message/fusion/mptbase.c --- a/drivers/message/fusion/mptbase.c~scsi-mpt-suppress-debugobjects-warning +++ a/drivers/message/fusion/mptbase.c @@ -5934,7 +5934,7 @@ mpt_config(MPT_ADAPTER *ioc, CONFIGPARMS /* Initalize the timer */ - init_timer(&pCfg->timer); + init_timer_on_stack(&pCfg->timer); pCfg->timer.data = (unsigned long) ioc; pCfg->timer.function = mpt_timer_expired; pCfg->wait_done = 0; _