From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jiri Slaby Subject: PM: cannot hibernate -- BUG at kernel/workqueue.c:3659 Date: Tue, 24 Jan 2012 16:05:57 +0100 Message-ID: <4F1EC8D5.5040102@suse.cz> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-pm-bounces@lists.linux-foundation.org Errors-To: linux-pm-bounces@lists.linux-foundation.org To: "Rafael J. Wysocki" , Linux-pm mailing list , LKML , Jiri Slaby List-Id: linux-pm@vger.kernel.org Hi, this is a freshly booted system. When I do s2dsk, I see: ... Freezing remaining freezable tasks ... BUG: 'workqueue_freezing' is true! ------------[ cut here ]------------ kernel BUG at /l/latest/linux/kernel/workqueue.c:3659! invalid opcode: 0000 [#1] SMP CPU 0 Modules linked in: Pid: 2669, comm: s2disk Not tainted 3.3.0-rc1-next-20120124_64+ #1627 Bochs Bochs RIP: 0010:[] [] freeze_workqueues_begin+0x195/0x1a0 RSP: 0018:ffff880046f01d68 EFLAGS: 00010292 RAX: 0000000000000023 RBX: 0000000000000001 RCX: 00000000000000c9 RDX: 0000000000000077 RSI: 0000000000000046 RDI: ffffffff81b51f7c RBP: ffff880046f01d98 R08: ffffffff81a9d760 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 00007fff579464dc R14: ffffffffffffffff R15: 0000000000000004 FS: 00007f3c65d54700(0000) GS:ffff880049600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 00007f3c64f58c20 CR3: 0000000045b64000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process s2disk (pid: 2669, threadinfo ffff880046f00000, task ffff880047251980) Stack: ffff880046f01d98 0000000000000001 0000000000000000 00007fff579464dc ffffffffffffffff 0000000000000004 ffff880046f01e18 ffffffff81096cb9 00000000ffff0124 0000000000000004 ffff880046f01e18 000000004f1ec7d1 Call Trace: [] try_to_freeze_tasks+0x1b9/0x2d0 [] freeze_kernel_threads+0x25/0x90 [] hibernation_snapshot+0x75/0x2e0 [] snapshot_ioctl+0x314/0x4e0 [] do_vfs_ioctl+0x96/0x550 [] ? vfs_write+0x10b/0x180 [] sys_ioctl+0x4a/0x80 [] system_call_fastpath+0x16/0x1b Code: c7 c6 0a a4 92 81 48 c7 c7 16 65 92 81 31 c0 e8 19 94 5a 00 0f 0b 48 c7 c6 27 a4 92 81 48 c7 c7 16 65 92 81 31 c0 e8 02 94 5a 00 <0f> 0b 66 0f 1f 84 00 00 00 00 00 55 48 c7 c7 82 4b b9 81 48 89 RIP [] freeze_workqueues_begin+0x195/0x1a0 RSP ---[ end trace 632574abdc098963 ]--- I wanted to reproduce a different crash which happens on 3.2.1. When there is not enough free swap, the kernel crashes (when s2disk is used). I will post more info after the one above is resolved and I can reproduce the latter :). thanks, -- js suse labs