[Bug 363478] Re: WARNING: at /build/buildd/linux-rt-2.6.28/arch/x86/kernel/signal_32.c:608 do_signal+0x171/0x180()

[Greg Turnquist]

I have seen this error as well when I switched over to linux-rt (as part
of Ubuntu Studio), using 32-bit ubuntu.

dmesg stack trace reads:
[    3.836907] ------------[ cut here ]------------
[    3.836968] WARNING: at /build/buildd/linux-rt-2.6.28/arch/x86/kernel/signal_32.c:608 do_signal+0x171/0x180()
[    3.837001] Modules linked in: raid10 raid456 async_xor async_memcpy async_tx xor raid1 raid0 multipath linear fbcon tileblit font bitblit softcursor
[    3.837001] Pid: 207, comm: udevd Not tainted 2.6.28-3-rt #12-Ubuntu
[    3.837001] Call Trace:
[    3.837001]  [<c050f991>] ? printk+0x18/0x1f
[    3.837001]  [<c013be54>] warn_on_slowpath+0x54/0x80
[    3.837001]  [<c0135eff>] ? resched_task+0x1f/0xd0
[    3.837001]  [<c0128efd>] ? update_curr+0x8d/0x1f0
[    3.837001]  [<c0102da7>] ? __switch_to+0xb7/0x1a0
[    3.837001]  [<c0511ed8>] ? _spin_unlock_irq+0x8/0x40
[    3.837001]  [<c0130850>] ? finish_task_switch+0x50/0x120
[    3.837001]  [<c0510117>] ? schedule+0x457/0x760
[    3.837001]  [<c0103eb1>] do_signal+0x171/0x180
[    3.837001]  [<c0510694>] ? preempt_schedule+0x74/0x80
[    3.837001]  [<c0511f5a>] ? _spin_unlock_irqrestore+0x4a/0x50
[    3.837001]  [<c0135e94>] ? wake_up_new_task+0xf4/0x140
[    3.837001]  [<c013b5a0>] ? do_fork+0x130/0x320
[    3.837001]  [<c01c41ef>] ? fput+0x1f/0x30
[    3.837001]  [<c01c0b29>] ? filp_close+0x49/0x70
[    3.837001]  [<c0103efd>] do_notify_resume+0x3d/0x40
[    3.837001]  [<c0104200>] work_notifysig+0x13/0x23
[    3.837001] ---[ end trace ea3fdad0a3f6fb1f ]---

lspci reads:
00:00.0 Host bridge: nVidia Corporation nForce3 250Gb Host Bridge (rev a1)
00:01.0 ISA bridge: nVidia Corporation nForce3 250Gb LPC Bridge (rev a2)
00:01.1 SMBus: nVidia Corporation nForce 250Gb PCI System Management (rev a1)
00:02.0 USB Controller: nVidia Corporation CK8S USB Controller (rev a1)
00:02.1 USB Controller: nVidia Corporation CK8S USB Controller (rev a1)
00:02.2 USB Controller: nVidia Corporation nForce3 EHCI USB 2.0 Controller (rev a2)
00:05.0 Bridge: nVidia Corporation CK8S Ethernet Controller (rev a2)
00:06.0 Multimedia audio controller: nVidia Corporation nForce3 250Gb AC'97 Audio Controller (rev a1)
00:08.0 IDE interface: nVidia Corporation CK8S Parallel ATA Controller (v2.5) (rev a2)
00:0a.0 IDE interface: nVidia Corporation nForce3 Serial ATA Controller (rev a2)
00:0b.0 PCI bridge: nVidia Corporation nForce3 250Gb AGP Host to PCI Bridge (rev a2)
00:0e.0 PCI bridge: nVidia Corporation nForce3 250Gb PCI-to-PCI Bridge (rev a2)
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
01:00.0 VGA compatible controller: nVidia Corporation GeForce 6200 A-LE (rev a1)
02:07.0 Multimedia video controller: Conexant Systems, Inc. CX23880/1/2/3 PCI Video and Audio Decoder (rev 05)
02:07.2 Multimedia controller: Conexant Systems, Inc. CX23880/1/2/3 PCI Video and Audio Decoder [MPEG Port] (rev 05)
02:08.0 Ethernet controller: Lite-On Communications Inc LNE100TX [Linksys EtherFast 10/100] (rev 25)
02:09.0 Multimedia video controller: Brooktree Corporation Bt878 Video Capture (rev 11)
02:09.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 11)
02:0a.0 Multimedia audio controller: Avance Logic Inc. ALS4000 Audio Chipset
02:0b.0 Ethernet controller: Atheros Communications Inc. Atheros AR5001X+ Wireless Network Adapter (rev 01)

uname -a reads:
Linux stargate 2.6.28-3-rt #12-Ubuntu SMP PREEMPT RT Fri Apr 17 10:09:11 UTC 2009 i686 GNU/Linux

-- 
WARNING: at /build/buildd/linux-rt-2.6.28/arch/x86/kernel/signal_32.c:608 do_signal+0x171/0x180()
https://bugs.launchpad.net/bugs/363478
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