On Mon, 5 Nov 2012, Fengguang Wu wrote: > Hi Herton, > > I got the below oops in Linux 3.7-rc4 and it's bisected down to > > commit b54e1f88897bcacc2cd359f48ea3b39eaf55f084 > Author: Herton Ronaldo Krzesinski <[email protected]> > Date: Mon Aug 27 20:56:51 2012 -0300 > > floppy: don't call alloc_ordered_workqueue inside the alloc_disk loop
Fengguang, thanks for the report. How reliable is the bisection result? (i.e. how reliably are you able to trigger this oops?). I am having a hard time seeing how that particular commit could be causing this kind of oops. Thanks. > > > [ 14.108013] CPU 0 > [ 14.108013] Pid: 6, comm: kworker/u:0 Not tainted 3.7.0-rc4 #1 Bochs Bochs > [ 14.108013] RIP: 0010:[<ffffffff8134eef5>] [<ffffffff8134eef5>] > blk_peek_request+0xd5/0x1c0 > [ 14.108013] RSP: 0000:ffff88000dc7dd88 EFLAGS: 00010092 > [ 14.108013] RAX: 0000000000000001 RBX: 0000000000000000 RCX: > 0000000000000000 > [ 14.108013] RDX: ffff88000f602688 RSI: ffffffff81fd95d8 RDI: > 6b6b6b6b6b6b6b6b > [ 14.108013] RBP: ffff88000dc7dd98 R08: ffffffff81fd95c8 R09: > 0000000000000000 > [ 14.108013] R10: ffffffff81fd9480 R11: 0000000000000001 R12: > 6b6b6b6b6b6b6b6b > [ 14.108013] R13: ffff88000dc7dfd8 R14: ffff88000dc7dfd8 R15: > 0000000000000000 > [ 14.108013] FS: 0000000000000000(0000) GS:ffffffff81e21000(0000) > knlGS:0000000000000000 > [ 14.108013] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > [ 14.108013] CR2: 0000000000000000 CR3: 0000000001e11000 CR4: > 00000000000006f0 > [ 14.108013] DR0: 0000000000000000 DR1: 0000000000000000 DR2: > 0000000000000000 > [ 14.108013] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: > 0000000000000400 > [ 14.108013] Process kworker/u:0 (pid: 6, threadinfo ffff88000dc7c000, task > ffff88000dc5ecc0) > [ 14.108013] Stack: > [ 14.108013] 0000000000000000 0000000000000000 ffff88000dc7ddb8 > ffffffff8134efee > [ 14.108013] ffff88000dc7ddb8 0000000000000000 ffff88000dc7dde8 > ffffffff814aef3c > [ 14.108013] ffffffff81e75d80 ffff88000dc0c640 ffff88000fbfb000 > ffffffff814aed90 > [ 14.108013] Call Trace: > [ 14.108013] [<ffffffff8134efee>] blk_fetch_request+0xe/0x30 > [ 14.108013] [<ffffffff814aef3c>] redo_fd_request+0x1ac/0x400 > [ 14.108013] [<ffffffff814aed90>] ? start_motor+0x130/0x130 > [ 14.108013] [<ffffffff8106b526>] process_one_work+0x136/0x450 > [ 14.108013] [<ffffffff8106af65>] ? manage_workers+0x205/0x2e0 > [ 14.108013] [<ffffffff8106bb6d>] worker_thread+0x14d/0x420 > [ 14.108013] [<ffffffff8106ba20>] ? rescuer_thread+0x1a0/0x1a0 > [ 14.108013] [<ffffffff8107075a>] kthread+0xba/0xc0 > [ 14.108013] [<ffffffff810706a0>] ? __kthread_parkme+0x80/0x80 > [ 14.108013] [<ffffffff818b553a>] ret_from_fork+0x7a/0xb0 > [ 14.108013] [<ffffffff810706a0>] ? __kthread_parkme+0x80/0x80 > [ 14.108013] Code: 0f 84 c0 00 00 00 83 f8 01 0f 85 e2 00 00 00 81 4b 40 00 > 00 80 00 48 89 df e8 58 f8 ff ff be fb ff ff ff 48 89 df e8 fb fe ff ff <49> > 8b 1c 24 49 39 dc 0f 85 2e ff ff ff 41 0f b6 84 24 28 04 00 > [ 14.108013] RIP [<ffffffff8134eef5>] blk_peek_request+0xd5/0x1c0 > [ 14.108013] RSP <ffff88000dc7dd88> > > Thanks, > Fengguang > -- Jiri Kosina SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
