From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 30262 invoked by alias); 2 Apr 2007 09:20:34 -0000 Received: (qmail 30056 invoked by uid 48); 2 Apr 2007 09:20:20 -0000 Date: Mon, 02 Apr 2007 09:20:00 -0000 From: "srinivasa at in dot ibm dot com" To: systemtap@sources.redhat.com Message-ID: <20070402102019.4307.srinivasa@in.ibm.com> Reply-To: sourceware-bugzilla@sourceware.org Subject: [Bug runtime/4307] New: execution of current.stp in systemtap-20070331 snapshot causes system to freeze on ppc64. X-Bugzilla-Reason: AssignedTo Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org X-SW-Source: 2007-q2/txt/msg00001.txt.bz2 I have this environment systemtap-20070331 snapshot,kernel-2.6.21-rc3, elfutils-0.125 arch=ppc64. But execution of current.stp in systemtap-20070331 snapshot is giving spinlock lockup and softlockup bug. And system is getting freezed. ====================================================== UG: spinlock lockup on CPU#0, sshd/2380, c0000000007da608 Call Trace: [C0000000076134C0] [C00000000000FAB0] .show_stack+0x68/0x1b0 (unreliable) [C000000007613560] [C0000000001AF9E8] ._raw_spin_lock+0x140/0x17c [C000000007613600] [C00000000036B40C] ._spin_lock+0x10/0x24 [C000000007613680] [C00000000006066C] .task_rq_lock+0x68/0xcc [C000000007613720] [C00000000002B71C] .kretprobe_trampoline_holder+0x0/0x8 [C000000007613810] [C00000000002B71C] .kretprobe_trampoline_holder+0x0/0x8 [C0000000076138C0] [C00000000002B71C] .kretprobe_trampoline_holder+0x0/0x8 [C000000007613970] [C00000000002B71C] .kretprobe_trampoline_holder+0x0/0x8 [C000000007613AC0] [C000000000201358] .pty_write+0x74/0x90 [C000000007613B40] [C0000000001FE05C] .write_chan+0x378/0x448 [C000000007613C20] [C0000000001F9EA0] .tty_write+0x1a0/0x278 [C000000007613CF0] [C0000000000E6938] .vfs_write+0x120/0x1f0 [C000000007613D90] [C0000000000E7368] .sys_write+0x4c/0x8c [C000000007613E30] [C0000000000086B4] syscall_exit+0x0/0x40 BUG: spinlock lockup on CPU#6, klogd/1887, c0000000007da608 Call Trace: [C00000000FD173F0] [C00000000000FAB0] .show_stack+0x68/0x1b0 (unreliable) [C00000000FD17490] [C0000000001AF9E8] ._raw_spin_lock+0x140/0x17c [C00000000FD17530] [C00000000036B40C] ._spin_lock+0x10/0x24 [C00000000FD175B0] [C00000000006066C] .task_rq_lock+0x68/0xcc [C00000000FD17650] [C00000000002B71C] .kretprobe_trampoline_holder+0x0/0x8 [C00000000FD17740] [C00000000002B71C] .kretprobe_trampoline_holder+0x0/0x8 [C00000000FD177F0] [C00000000002B71C] .kretprobe_trampoline_holder+0x0/0x8 [C00000000FD178A0] [C00000000002B71C] .kretprobe_trampoline_holder+0x0/0x8 [C00000000FD17930] [C00000000035CF80] .unix_dgram_sendmsg+0x524/0x638 [C00000000FD17A30] [C0000000002C9CE4] .sock_aio_write+0x164/0x19c [C00000000FD17B60] [C0000000000E5FF0] .do_sync_write+0xc4/0x124 [C00000000FD17CF0] [C0000000000E6954] .vfs_write+0x13c/0x1f0 [C00000000FD17D90] [C0000000000E7368] .sys_write+0x4c/0x8c [C00000000FD17E30] [C0000000000086B4] syscall_exit+0x0/0x40 ============================================================= But What I observed is, previous week systemtap is not giving any problem at all. Could the recent transport changes be the reason for this? -- Summary: execution of current.stp in systemtap-20070331 snapshot causes system to freeze on ppc64. Product: systemtap Version: unspecified Status: NEW Severity: normal Priority: P2 Component: runtime AssignedTo: systemtap at sources dot redhat dot com ReportedBy: srinivasa at in dot ibm dot com CC: ananth at in dot ibm dot com http://sourceware.org/bugzilla/show_bug.cgi?id=4307 ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee.