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Message-Id: <20100914120738.6a658f69.akpm@linux-foundation.org> Date: Tue, 14 Sep 2010 12:07:38 -0700 From: Andrew Morton <akpm@...ux-foundation.org> To: netdev@...r.kernel.org Cc: bugzilla-daemon@...zilla.kernel.org, bugme-daemon@...zilla.kernel.org, hramrach@...trum.cz, Herbert Xu <herbert@...dor.hengli.com.au> Subject: Re: [Bugme-new] [Bug 18492] New: kernel softirq warning on boot (switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Tue, 14 Sep 2010 15:19:30 GMT bugzilla-daemon@...zilla.kernel.org wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=18492 > > Summary: kernel softirq warning on boot > Product: Drivers > Version: 2.5 > Kernel Version: 2.6.36-rc4 Looks like a post-2.6.35 regression. I'd be looking at the rcu_read_unlock_bh() in netpoll_rx(), added by "netpoll: Fix RCU usage". > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: Network > AssignedTo: drivers_network@...nel-bugs.osdl.org > ReportedBy: hramrach@...trum.cz > Regression: No > > > In the 2.6.36 rc kernels I noticed a warning on every boot. > > It may be related to upgrading the cpu to dual-core rather than upgrading the > kernel. > > [ 14.332011] ------------[ cut here ]------------ > [ 14.332021] WARNING: at kernel/softirq.c:143 > _local_bh_enable_ip+0x41/0x8b() > [ 14.332024] Hardware name: System Product Name > [ 14.332026] Modules linked in: bridge stp llc reiserfs fuse coretemp > hwmon_vid radeonfb fb_d > dc loop firewire_sbp2 snd_hda_codec_realtek snd_hda_intel snd_hda_codec > snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_mid > i snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device asus_atk0110 > snd wacom processor soundcore button psmouse lm6 > 3 snd_page_alloc led_class parport_pc i2c_i801 shpchp parport serio_raw joydev > evdev tpm_tis pci_hotplug tpm tpm_bios rng_core > ext3 jbd mbcache usbhid hid sg sr_mod cdrom sd_mod crc_t10dif radeon pata_acpi > ttm ata_generic drm_kms_helper ata_piix ehci_hcd > uhci_hcd drm i2c_algo_bit i2c_core libata atl1 thermal thermal_sys > firewire_ohci usbcore mii firewire_core crc_itu_t scsi_mod > nls_base [last unloaded: scsi_wait_scan] > [ 14.332101] Pid: 0, comm: swapper Not tainted 2.6.36-rc4-r600fence-amd64 #1 > [ 14.332104] Call Trace: > [ 14.332106] <IRQ> [<ffffffff810442f8>] ? warn_slowpath_common+0x78/0x8c > [ 14.332116] [<ffffffff8104985b>] ? _local_bh_enable_ip+0x41/0x8b > [ 14.332122] [<ffffffff812515e5>] ? netpoll_rx+0x6d/0x79 > [ 14.332126] [<ffffffff81253721>] ? netif_rx+0xd/0x7b > [ 14.332130] [<ffffffff810403a6>] ? rebalance_domains+0xd1/0x13b > [ 14.332135] [<ffffffff810aaf19>] ? perf_event_task_tick+0x6a/0x186 > [ 14.332146] [<ffffffffa00c2994>] ? atl1_intr+0x8d9/0x9a5 [atl1] > [ 14.332151] [<ffffffff8108d68b>] ? handle_IRQ_event+0x4c/0x104 > [ 14.332156] [<ffffffff8100e6a6>] ? read_tsc+0x5/0x16 > [ 14.332160] [<ffffffff8108f2fb>] ? handle_edge_irq+0xd9/0x120 > [ 14.332164] [<ffffffff8100af68>] ? handle_irq+0x17/0x1f > [ 14.332168] [<ffffffff8100a62a>] ? do_IRQ+0x54/0xb9 > [ 14.332173] [<ffffffff81305093>] ? ret_from_intr+0x0/0x11 > [ 14.332175] <EOI> [<ffffffff8100fb50>] ? mwait_idle+0x75/0x80 > [ 14.332182] [<ffffffff8100fb02>] ? mwait_idle+0x27/0x80 > [ 14.332187] [<ffffffff81007b64>] ? cpu_idle+0xaa/0x120 > [ 14.332192] [<ffffffff816bad4f>] ? start_kernel+0x3ce/0x3d9 > [ 14.332197] [<ffffffff816ba3ba>] ? x86_64_start_kernel+0xf9/0x106 > [ 14.332200] ---[ end trace 76feca083f1d81b1 ]--- > -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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