On Thu, 30 Jul 2009 02:48:04 +0200 (CEST) Thomas Gleixner <tg...@linutronix.de> wrote:

I searched the mails in this chain, but did not find the following BUG reported yet. I hit this once while booting up.

INIT: version 2.86 bootingBUG: unable to handle kernel NULL pointer dereference
at 0000000000000024 IP: [<ffffffff81050fe6>] try_to_wake_up+0x3b/0x2e2 PGD 0 Oops: 0000 [#1] PREEMPT SMP last sysfs file: /sys/block/sda/dev CPU 5 Modules linked in: dm_region_hash dm_log dm_mod ata_piix libata shpchp mptsas
mptscsih mptbase scsi_transport_sas sd_mod scsi_mod crc_t10dif ext3 jbd mbcache
uhci_hcd ohci_hcd ehci_hcd Pid: 0, comm: swapper Not tainted 2.6.31-rc4-rt1 #1 IBM eServer BladeCenter HS21
-[7995AAA]- RIP: 0010:[<ffffffff81050fe6>] [<ffffffff81050fe6>] try_to_wake_up+0x3b/0x2e2 RSP: 0018:ffff880028199e38 EFLAGS: 00010082 RAX: 0000000000000000 RBX: 000000000000001e RCX: 0000000000000000 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000000 RBP: ffff880028199e88 R08: b000000000000000 R09: 0000000000000001 R10: 0000000000000001 R11: 017dbbb7ec537836 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff880028196000(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 0000000000000024 CR3: 0000000001001000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process swapper (pid: 0, threadinfo ffff88022f342000, task ffff88022f340000) Stack: ffffffff810bd00b 00000000ec537836 ffffffff81619840 ffff88022c58e640 <0> 017dbbb7ec537836 ffffffff81619840 ffff88022c58e640 0000000000000001 <0> 0000000000000004 0000000000000000 ffff880028199ea8 ffffffff810513fb Call Trace: <IRQ> [<ffffffff810bd00b>] ? handle_edge_irq+0x35/0x13d [<ffffffff810513fb>] wake_up_process+0x2a/0x40 [<ffffffff810baf12>] handle_IRQ_event+0x169/0x1a1 [<ffffffff810bd0b7>] handle_edge_irq+0xe1/0x13d [<ffffffff8100f031>] handle_irq+0x9d/0xbf [<ffffffff8100acc9>] ? exit_idle+0x33/0x49 [<ffffffff813f0b12>] do_IRQ+0x72/0xd9 [<ffffffff8100cc93>] ret_from_intr+0x0/0xa <EOI> [<ffffffff810151dd>] ? mwait_idle+0x8b/0xb2 [<ffffffff810151d0>] ? mwait_idle+0x7e/0xb2 [<ffffffff8100abfe>] ? enter_idle+0x38/0x4e [<ffffffff8100b3da>] ? cpu_idle+0xae/0x100 [<ffffffff813e3f4e>] ? start_secondary+0x19d/0x1b8 Code: 28 0f 1f 44 00 00 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 80 3d 09 e4
5c 00 00 41 89 d6 89 4d bc 49 89 fc 89 f3 44 0f 49 f0 <83> 7f 24 63 44 0f 4e f0
48 8d 75 c8 89 db e8 95 53 ff ff 48 89 RIP [<ffffffff81050fe6>] try_to_wake_up+0x3b/0x2e2 RSP <ffff880028199e38> CR2: 0000000000000024 ---[ end trace f21e517c335b6dab ]--- Kernel panic - not syncing: Fatal exception in interrupt

Thanks, Sripathi.

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