>-----Original Message----- >From: Chuck Ebbert [mailto:[EMAIL PROTECTED] >Sent: Thursday, January 17, 2008 4:01 PM >To: Nelson, Shannon >Cc: linux-kernel >Subject: IOATDMA: driver oopses on request_irq() > >https://bugzilla.redhat.com/show_bug.cgi?id=311991 >[still present in 2.6.23.8] > >[Drivers really need to actually be ready to receive interrupts when >they call request_irq(). We keep finding drivers that aren't because >we enable CONFIG_DEBUG_SHIRQ] > >kernel version: 2.6.22.7-85.fc7debug >modprobe ioatdma during bootup sez: > >[ 142.497353] Module ioatdma cannot be unloaded due to unsafe usage in >drivers/dma/ioatdma.c:829 >[ 142.497906] ACPI: PCI Interrupt 0000:00:08.0[A] -> GSI 16 >(level, low) -> IRQ 16 >[ 142.497945] Unable to handle kernel NULL pointer dereference at >0000000000000003 RIP: >[ 142.498002] [<ffffffff8835adc0>] >:ioatdma:ioat_do_interrupt+0xd/0x50 >[ 142.498770] PGD 10fc46067 PUD 114a56067 PMD 0 >[ 142.499156] Oops: 0000 [1] SMP >[ 142.499498] last sysfs file: /block/sr0/removable >[ 142.499753] CPU 3 >[ 142.500049] Modules linked in: ioatdma dell_rbu nfsd >exportfs lockd nfs_acl >ipmi_devintf ipmi_si ipmi_msghandler hidp l2cap bluetooth sunr >pc xt_length ipt_TOS xt_state xt_tcpudp ipt_REJECT ipt_LOG xt_limit >iptable_mangle iptable_nat nf_nat nf_conntrack_ipv4 >nf_conntrack nfnetlin >k iptable_filter ip_tables x_tables ppp_deflate zlib_deflate >ppp_synctty >ppp_async crc_ccitt ppp_generic slhc bridge dm_mirror dm_multipath d >m_mod video sbs button dock battery ac tcp_westwood kvm_intel >kvm sr_mod cdrom >ata_generic ata_piix serio_raw libata bnx2 rtc_cmos sg joydev >usb_storage shpchp megaraid_sas sd_mod scsi_mod ext3 jbd >mbcache ehci_hcd >ohci_hcd uhci_hcd >[ 142.505129] Pid: 5239, comm: modprobe Not tainted >2.6.22.7-85.fc7debug #1 >[ 142.505386] RIP: 0010:[<ffffffff8835adc0>] [<ffffffff8835adc0>] >:ioatdma:ioat_do_interrupt+0xd/0x50 >[ 142.505892] RSP: 0018:ffff81010ff83c48 EFLAGS: 00010096 >[ 142.506146] RAX: 0000000000001214 RBX: 0000000000000202 >RCX: ffffffff8835b0f5 >[ 142.506405] RDX: 0000000000000000 RSI: ffff81012cc11700 >RDI: 00000000000008f4 >[ 142.506663] RBP: ffff81012cc11700 R08: ffff81012cc11700 >R09: ffff81012cc11700 >[ 142.506919] R10: 000000000000005a R11: ffffffff811f2016 >R12: 0000000000000020 >[ 142.507176] R13: ffff81012cc11700 R14: ffffffff8835adb3 >R15: 00000000000008f4 >[ 142.507434] FS: 00002aaaaaae0250(0000) GS:ffff810105855900(0000) >knlGS:0000000000000000 >[ 142.507892] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b >[ 142.508147] CR2: 0000000000000003 CR3: 0000000110281000 >CR4: 00000000000026e0 >[ 142.508406] Process modprobe (pid: 5239, threadinfo >ffff81010ff82000, task >ffff8101106dcf60) >[ 142.508866] Stack: ffff81012cc11700 0000000000000202 >ffff81012447ab40 >ffffffff81069bd8 >[ 142.509544] ffff81012447ac80 ffffffff8835b0f5 >01ff81012f971070 ffff81012f971070 >[ 142.510176] ffff81012cc11700 ffff81012f971000 >00000000fffffff4 0000000000000000 >[ 142.510566] Call Trace: >[ 142.511063] [<ffffffff81069bd8>] request_irq+0xcc/0x120 >[ 142.511321] [<ffffffff8835aab7>] :ioatdma:ioat_probe+0x15b/0x457 >[ 142.511581] [<ffffffff8126a916>] _spin_unlock+0x17/0x20 >[ 142.511839] [<ffffffff8112c1be>] pci_device_probe+0xcd/0x134 >[ 142.512097] [<ffffffff811a54a3>] driver_probe_device+0xff/0x17c >[ 142.512354] [<ffffffff811a5668>] __driver_attach+0x90/0xcc >[ 142.512609] [<ffffffff811a55d8>] __driver_attach+0x0/0xcc >[ 142.512865] [<ffffffff811a55d8>] __driver_attach+0x0/0xcc >[ 142.513120] [<ffffffff811a4824>] bus_for_each_dev+0x43/0x6e >[ 142.513378] [<ffffffff811a4b9c>] bus_add_driver+0x7b/0x19d >[ 142.513634] [<ffffffff8112c3a0>] __pci_register_driver+0x68/0x9a >[ 142.513892] [<ffffffff81055f70>] sys_init_module+0x163f/0x17a1 >[ 142.514153] [<ffffffff81067540>] audit_syscall_entry+0x141/0x174 >[ 142.514414] [<ffffffff81009d2e>] tracesys+0xd5/0xda >[ 142.514673] >[ 142.514920] >[ 142.514920] Code: 8a 42 03 0f b6 d8 31 c0 f6 c3 01 74 31 f6 >c3 02 75 0a 0f b6 >[ 142.516541] RIP [<ffffffff8835adc0>] >:ioatdma:ioat_do_interrupt+0xd/0x50 >[ 142.516841] RSP <ffff81010ff83c48> >[ 142.517091] CR2: 0000000000000003
Chuck - We did some significant rework on the ioatdma driver last summer. Unfortunately it didn't make it into 2.6.23, but it is available in 2.6.24 as well as out-of-core on our SourceForge site. Please try the newer code - I believe it will fix your problem. Thanks, sln ====================================================================== Mr. Shannon Nelson LAN Access Division, Intel Corp. [EMAIL PROTECTED] I don't speak for Intel (503) 712-7659 Parents can't afford to be squeamish. -- 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/
