Peter, Could you take a look at this? -- Steve On Mon, 14 Jan 2008, Chirag Jog wrote: > Hi, > On Running Specjbb on the latest kernel [2.6.24-rc7-rt1], I > get the following oops. > > This is reproducible easily. I have seen it on the > 2.6.24-rc5-rt1. > Although I didn't see it on 2.6.23.11-rt14. > Also I haven't seen it on 2.6.24-rc6 [Mainline]. > > > Unable to handle kernel NULL pointer dereference at 0000000000000060 RIP: > [<ffffffff8022d353>] pick_next_task_fair+0x2d/0x3f > PGD 236ce9067 PUD 23851d067 PMD 237cf4067 PTE 0 > Oops: 0000 [1] PREEMPT SMP > CPU 2 > Modules linked in: ipv6 autofs4 i2c_dev i2c_core hidp rfcomm l2cap bluetooth sunrpc dm_mirror dm_multipath dm_mod sbs sbshc dock battery ac power_supply parport_pc lp parport sg bnx2 button serio_raw shpchp k8temp rtc_cmos rtc_core pcspkr hwmon rtc_lib mptsas mptscsih mptbase scsi_transport_sas sd_mod scsi_mod ext3 jbd ehci_hcd ohci_hcd uhci_hcd > Pid: 3905, comm: java Not tainted 2.6.24-rc7-rt1 #1 > RIP: 0010:[<ffffffff8022d353>] [<ffffffff8022d353>] pick_next_task_fair+0x2d/0x3f > RSP: 0018:ffff8101d2c7bc48 EFLAGS: 00210046 > RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff8101d2c794e0 > RDX: 0000000000000004 RSI: 0000000000000001 RDI: ffff81000e8a98e0 > RBP: ffff8101d2c7bc58 R08: ffff81000e8a5a40 R09: 0000000000000002 > R10: ffff810236c7d1a0 R11: 0000000000000001 R12: ffff81000e8a5a40 > R13: 0000000000000001 R14: ffff81000e8a9880 R15: 00000001000481a6 > FS: 00002ac153330090(0000) GS:ffff81023fc057c0(0063) knlGS:0000000097effb90 > CS: 0010 DS: 002b ES: 002b CR0: 000000008005003b > CR2: 0000000000000060 CR3: 000000023981d000 CR4: 00000000000006e0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 > Process java (pid: 3905, threadinfo ffff8101d2c7a000, task ffff8101d2c794e0) > Stack: ffffffff8022ced1 ffff8101d2c794e0 ffff8101d2c7bcf8 ffffffff80486345 > ffff8101d2c7bcc0 0000000000000000 ffff8101d2c7be08 ffff81023f526040 > ffff8101d2c794e0 ffffffff80257b15 ffff8101d2c79760 0000000200402040 > Call Trace: > [<ffffffff8022ced1>] put_prev_task_rt+0xd/0x18 > [<ffffffff80486345>] __schedule+0x3d6/0x6fc > [<ffffffff80257b15>] __rt_mutex_adjust_prio+0x11/0x24 > [<ffffffff80258285>] task_blocks_on_rt_mutex+0x103/0x1bf > [<ffffffff8048697d>] schedule+0xdf/0xff > [<ffffffff804874d8>] rt_mutex_slowlock+0x1c3/0x29d > [<ffffffff80487175>] rt_mutex_lock+0x28/0x2a > [<ffffffff8025850f>] __rt_down_read+0x47/0x4b > [<ffffffff80258529>] rt_down_read+0xb/0xd > [<ffffffff80256c8f>] do_futex+0x753/0xb1d > [<ffffffff8020a76e>] __switch_to+0x11a/0x2a0 > [<ffffffff80232b8b>] finish_task_switch+0x2b/0x98 > [<ffffffff8025758c>] compat_sys_futex+0xd8/0xf6 > [<ffffffff8020f573>] syscall_trace_enter+0x95/0x99 > [<ffffffff80225534>] cstar_do_call+0x1b/0x65 > > > Code: 48 8b 7b 60 48 85 ff 75 e0 48 8d 43 b8 41 58 5b c9 c3 55 48 > RIP [<ffffffff8022d353>] pick_next_task_fair+0x2d/0x3f > RSP <ffff8101d2c7bc48> > CR2: 0000000000000060 > > > Here is the config file. > [snipped - see linux-rt-users] - To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
