Hi, I use on i686 architecture Gentoo linux with XFS filesystem. Recently it happened to me 3 time that the machine locked, although at least once sys-rq+b worked. Here is the log from remote console. I don't remeber having such problems with 2.6.12-rc6-git2, which was my previous testing kernel. The problems appear under heavy load when I compile/install some packages and maybe it's just a bad coincidence or not, when I move my usb mouse in fvwm2 environment. The machine locks. Any clues? Please Cc: me in replies. Martin
Linux version 2.6.13-rc1 ([EMAIL PROTECTED]) (gcc version 3.4.4 (Gentoo 3.4.4, ssp-3.4.4-1.0, pie-8.7.8)) #2 Mon Jul 4 01:13:46 CEST 2005 BIOS-provided physical RAM map: BIOS-e820: 0000000000000000 - 000000000009fc00 (usable) BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved) BIOS-e820: 00000000000e8000 - 0000000000100000 (reserved) BIOS-e820: 0000000000100000 - 00000000bff30000 (usable) BIOS-e820: 00000000bff30000 - 00000000bff40000 (ACPI data) BIOS-e820: 00000000bff40000 - 00000000bfff0000 (ACPI NVS) BIOS-e820: 00000000bfff0000 - 00000000c0000000 (reserved) BIOS-e820: 00000000ffb80000 - 0000000100000000 (reserved) 2175MB HIGHMEM available. 896MB LOWMEM available. found SMP MP-table at 000ff780 DMI 2.3 present. ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled) Processor #0 15:2 APIC version 20 ACPI: LAPIC (acpi_id[0x02] lapic_id[0x01] disabled) ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0]) IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-23 ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl) ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) Enabling APIC mode: Flat. Using 1 I/O APICs Using ACPI (MADT) for SMP configuration information Allocating PCI resources starting at c0000000 (gap: c0000000:3fb80000) Built 1 zonelists Kernel command line: root=/dev/sda2 ide=reverse agp=try_unsupported console=ttyS0,57600n8 console=tty0 vga=792 idebus=66 ide_setup: ide=reverse : Enabled support for IDE inverse scan order. ide_setup: idebus=66 Initializing CPU#0 PID hash table entries: 4096 (order: 12, 65536 bytes) Detected 3228.252 MHz processor. Using tsc for high-res timesource Console: colour dummy device 80x25 Dentry cache hash table entries: 131072 (order: 7, 524288 bytes) Inode-cache hash table entries: 65536 (order: 6, 262144 bytes) Memory: 3112324k/3144896k available (2926k kernel code, 31420k reserved, 1612k data, 172k init, 2227392k highmem) Checking if this processor honours the WP bit even in supervisor mode... Ok. Calibrating delay using timer specific routine.. 6464.39 BogoMIPS (lpj=12928798) Mount-cache hash table entries: 512 CPU: Trace cache: 12K uops, L1 D cache: 8K CPU: L2 cache: 512K Intel machine check architecture supported. Intel machine check reporting enabled on CPU#0. CPU0: Intel P4/Xeon Extended MCE MSRs (12) available CPU0: Thermal monitoring enabled CPU: Intel(R) Pentium(R) 4 CPU 3.00GHz stepping 09 Enabling fast FPU save and restore... done. Enabling unmasked SIMD FPU exception support... done. Checking 'hlt' instruction... OK. ENABLING IO-APIC IRQs ..TIMER: vector=0x31 pin1=2 pin2=-1 NET: Registered protocol family 16 PCI: PCI BIOS revision 2.10 entry at 0xf0031, last bus=3 PCI: Using configuration type 1 mtrr: v2.0 (20020519) ACPI: Subsystem revision 20050309 ACPI: Interpreter enabled ACPI: Using IOAPIC for interrupt routing ACPI: PCI Root Bridge [PCI0] (0000:00) PCI: Probing PCI hardware (bus 00) PCI: Ignoring BAR0-3 of IDE controller 0000:00:1f.1 PCI: Transparent bridge - 0000:00:1e.0 ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 7 *10 11 12 14 15) ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 10 *11 12 14 15) ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 *5 6 7 10 11 12 14 15) ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 *7 10 11 12 14 15) ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 10 *11 12 14 15) ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled. ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled. ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 7 10 *11 12 14 15) Linux Plug and Play Support v0.97 (c) Adam Belay pnp: PnP ACPI init pnp: PnP ACPI: found 12 devices SCSI subsystem initialized usbcore: registered new driver usbfs usbcore: registered new driver hub PCI: Using ACPI for IRQ routing PCI: If a device doesn't work, try "pci=routeirq". If it helps, post a report pnp: 00:08: ioport range 0x680-0x6ff has been reserved pnp: 00:08: ioport range 0x290-0x297 has been reserved Machine check exception polling timer started. IA-32 Microcode Update Driver: v1.14 <[EMAIL PROTECTED]> highmem bounce pool size: 64 pages SGI XFS with no debug enabled Initializing Cryptographic API ACPI: PCI Interrupt 0000:01:00.0[A] -> GSI 16 (level, low) -> IRQ 16 radeonfb: Found Intel x86 BIOS ROM Image radeonfb: Retreived PLL infos from BIOS radeonfb: Reference=27.00 MHz (RefDiv=12) Memory=250.00 Mhz, System=200.00 MHz radeonfb: PLL min 20000 max 40000 radeonfb: Monitor 1 type DFP found radeonfb: EDID probed radeonfb: Monitor 2 type no found Console: switching to colour frame buffer device 160x64 radeonfb (0000:01:00.0): ATI Radeon Ya ACPI: Power Button (FF) [PWRF] Real Time Clock Driver v1.12 Non-volatile memory driver v1.2 Hangcheck: starting hangcheck timer 0.9.0 (tick is 180 seconds, margin is 60 seconds). Hangcheck: Using monotonic_clock(). PNP: PS/2 controller doesn't have AUX irq; using default 0xc PNP: PS/2 Controller [PNP0303:PS2K] at 0x60,0x64 irq 112 serio: i8042 AUX port at 0x60,0x64 irq 12 serio: i8042 KBD port at 0x60,0x64 irq 1 Serial: 8250/16550 driver $Revision: 1.90 $ 8 ports, IRQ sharing enabled ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A ttyS0 at I/O 0x3f8 (irq = 0) is a 16550A ttyS1 at I/O 0x2f8 (irq = 0) is a 16550A ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A io scheduler noop registered io scheduler anticipatory registered io scheduler deadline registered io scheduler cfq registered Floppy drive(s): fd0 is 1.44M FDC 0 is a post-1991 82077 loop: loaded (max 8 devices) Intel(R) PRO/1000 Network Driver - version 6.0.60-k2 Copyright (c) 1999-2005 Intel Corporation. ACPI: PCI Interrupt 0000:02:01.0[A] -> GSI 18 (level, low) -> IRQ 17 e1000: eth0: e1000_probe: Intel(R) PRO/1000 Network Connection Linux video capture interface: v1.00 Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2 ide: Assuming 66MHz system bus speed for PIO modes ICH5: IDE controller at PCI slot 0000:00:1f.1 PCI: Enabling device 0000:00:1f.1 (0005 -> 0007) ACPI: PCI Interrupt 0000:00:1f.1[A] -> GSI 18 (level, low) -> IRQ 17 ICH5: chipset revision 2 ICH5: not 100% native mode: will probe irqs later ide0: BM-DMA at 0xfc00-0xfc07, BIOS settings: hda:DMA, hdb:pio ide1: BM-DMA at 0xfc08-0xfc0f, BIOS settings: hdc:pio, hdd:pio hda: SONY DVD RW DRU-510A, ATAPI CD/DVD-ROM drive ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 hda: ATAPI 32X DVD-ROM DVD-R CD-R/RW drive, 8192kB Cache, UDMA(33) Uniform CD-ROM driver Revision: 3.20 ACPI: PCI Interrupt 0000:00:1f.2[A] -> GSI 18 (level, low) -> IRQ 17 ata1: SATA max UDMA/133 cmd 0xEFE0 ctl 0xEFAE bmdma 0xEF60 irq 17 ata2: SATA max UDMA/133 cmd 0xEFA0 ctl 0xEFAA bmdma 0xEF68 irq 17 ata1: dev 0 ATA, max UDMA/133, 586072368 sectors: lba48 ata1: dev 0 configured for UDMA/133 scsi0 : ata_piix ata2: dev 0 ATA, max UDMA/133, 490234752 sectors: lba48 ata2: dev 0 configured for UDMA/133 scsi1 : ata_piix Vendor: ATA Model: ST3300831AS Rev: 3.01 Type: Direct-Access ANSI SCSI revision: 05 Vendor: ATA Model: Maxtor 7Y250M0 Rev: YAR5 Type: Direct-Access ANSI SCSI revision: 05 st: Version 20050501, fixed bufsize 32768, s/g segs 256 SCSI device sda: 586072368 512-byte hdwr sectors (300069 MB) SCSI device sda: drive cache: write back SCSI device sda: 586072368 512-byte hdwr sectors (300069 MB) SCSI device sda: drive cache: write back sda: sda1 sda2 sda3 Attached scsi disk sda at scsi0, channel 0, id 0, lun 0 SCSI device sdb: 490234752 512-byte hdwr sectors (251000 MB) SCSI device sdb: drive cache: write back SCSI device sdb: 490234752 512-byte hdwr sectors (251000 MB) SCSI device sdb: drive cache: write back sdb: sdb1 sdb2 sdb3 Attached scsi disk sdb at scsi1, channel 0, id 0, lun 0 Attached scsi generic sg0 at scsi0, channel 0, id 0, lun 0, type 0 Attached scsi generic sg1 at scsi1, channel 0, id 0, lun 0, type 0 ohci1394: $Rev: 1250 $ Ben Collins <[EMAIL PROTECTED]> ACPI: PCI Interrupt 0000:03:03.0[A] -> GSI 20 (level, low) -> IRQ 18 PCI: Via IRQ fixup for 0000:03:03.0, from 11 to 2 ohci1394: fw-host0: OHCI-1394 1.0 (PCI): IRQ=[18] MMIO=[feaff800-feafffff] Max Packet=[2048] video1394: Installed video1394 module ieee1394: raw1394: /dev/raw1394 device initialized sbp2: $Rev: 1219 $ Ben Collins <[EMAIL PROTECTED]> ieee1394: Loaded AMDTP driver ieee1394: Loaded CMP driver usbmon: debugs is not available usbcore: registered new driver hiddev usbcore: registered new driver usbhid drivers/usb/input/hid-core.c: v2.01:USB HID core driver mice: PS/2 mouse device common for all mice input: PC Speaker i2c /dev entries driver NET: Registered protocol family 2 IP: routing cache hash table of 32768 buckets, 256Kbytes TCP established hash table entries: 524288 (order: 10, 4194304 bytes) TCP bind hash table entries: 65536 (order: 6, 262144 bytes) TCP: Hash tables configured (established 524288 bind 65536) TCP reno registered TCP bic registered NET: Registered protocol family 1 NET: Registered protocol family 17 p4-clockmod: P4/Xeon(TM) CPU On-Demand Clock Modulation available Using IPI Shortcut mode ACPI wakeup devices: P0P4 MC97 USB1 USB2 USB3 USB4 EUSB PS2K ILAN ACPI: (supports S0 S1 S3 S4 S5) BIOS EDD facility v0.16 2004-Jun-25, 2 devices found input: AT Translated Set 2 keyboard on isa0060/serio0 UDF-fs: No VRS found XFS mounting filesystem sda2 Starting XFS recovery on filesystem: sda2 (dev: sda2) Ending XFS recovery on filesystem: sda2 (dev: sda2) VFS: Mounted root (xfs filesystem) readonly. Freeing unused kernel memory: 172k freed Adding 11896124k swap on /dev/sda3. Priority:-1 extents:1 ------------[ cut here ]------------ kernel BUG at kernel/sched.c:2731! invalid operand: 0000 [#1] PREEMPT DEBUG_PAGEALLOC Modules linked in: radeon drm parport_pc lp parport snd_rtctimer snd_seq_virmidi snd_seq_midi snd_rawmidi snd_intel8x0 snd_ac97_codec sndt CPU: 0 EIP: 0060:[<c011bdf6>] Not tainted VLI EFLAGS: 00010297 (2.6.13-rc1) EIP is at sub_preempt_count+0x27/0x3f eax: 00000000 ebx: f7750e7c ecx: f7750e8c edx: 00000001 esi: 00000000 edi: 00000001 ebp: f79a3d74 esp: f79a3d74 ds: 007b es: 007b ss: 0068 Process xfsbufd (pid: 168, threadinfo=f79a2000 task=f788ab10) Stack: f79a3d9c c02d5e15 f7755ef8 f77903fc f7750e8c e76bb080 00000002 f79a3dec f7750e8c 00000008 f79a3e0c c02d5f0f 00000010 f7750e7c f7750e8c 00000008 f79a2000 e76bb080 00000001 00000000 f788ab10 c0132aee f79a3dec f79a3dec Call Trace: [<c0103e0c>] show_stack+0x7a/0x90 [<c0103f91>] show_registers+0x156/0x1ce [<c0104196>] die+0xf4/0x17e [<c01042a1>] do_trap+0x81/0xb8 [<c010457b>] do_invalid_op+0xa3/0xad [<c0103a6b>] error_code+0x4f/0x54 [<c02d5e15>] get_request+0x29e/0x2d1 [<c02d5f0f>] get_request_wait+0xc7/0x11a [<c02d67e9>] __make_request+0x95/0x462 [<c02d6ebf>] generic_make_request+0x71/0x1e7 [<c02d7089>] submit_bio+0x54/0xd4 [<c021f424>] _pagebuf_ioapply+0x16e/0x290 [<c021f581>] pagebuf_iorequest+0x3b/0x152 [<c0224bc1>] xfs_bdstrat_cb+0x34/0x41 [<c021fe5c>] xfsbufd+0x16c/0x208 [<c0101355>] kernel_thread_helper+0x5/0xb Code: 40 c0 eb e1 55 89 c2 b8 00 e0 ff ff 21 e0 8b 40 14 89 e5 39 d0 7c 14 81 fa fe 00 00 00 76 16 b8 00 e0 ff ff 21 e0 29 50 14 5d c3 <0 <1>Unable to handle kernel paging request at virtual address f79a3dec printing eip: c0132a27 *pde = 00637067 Oops: 0002 [#2] PREEMPT DEBUG_PAGEALLOC Modules linked in: radeon drm parport_pc lp parport snd_rtctimer snd_seq_virmidi snd_seq_midi snd_rawmidi snd_intel8x0 snd_ac97_codec sndt CPU: 0 EIP: 0060:[<c0132a27>] Not tainted VLI EFLAGS: 00010046 (2.6.13-rc1) EIP is at prepare_to_wait_exclusive+0x37/0x7f eax: f79a3dec ebx: f6133b30 ecx: 00000001 edx: f6133b3c esi: f7750ea8 edi: 00000002 ebp: f6133aec esp: f6133adc ds: 007b es: 007b ss: 0068 Process rm (pid: 11326, threadinfo=f6132000 task=e5545b10) Stack: 00000002 f6133b3c f7750e8c 00000008 f6133b5c c02d5efa 00000010 f7750e7c f7750e8c 00000008 f6132000 c29b90d0 00000001 00000000 e5545b10 c0132aee f6133b3c f6133b3c c013fad6 00011220 00011220 00000001 e5545b10 c0132aee Call Trace: [<c0103e0c>] show_stack+0x7a/0x90 [<c0103f91>] show_registers+0x156/0x1ce [<c0104196>] die+0xf4/0x17e [<c0117655>] do_page_fault+0x434/0x613 [<c0103a6b>] error_code+0x4f/0x54 [<c02d5efa>] get_request_wait+0xb2/0x11a [<c02d67e9>] __make_request+0x95/0x462 [<c02d6ebf>] generic_make_request+0x71/0x1e7 [<c02d7089>] submit_bio+0x54/0xd4 [<c021f424>] _pagebuf_ioapply+0x16e/0x290 [<c021f581>] pagebuf_iorequest+0x3b/0x152 [<c0203993>] xlog_bdstrat_cb+0x19/0x4a [<c020423f>] xlog_sync+0x225/0x4a1 [<c0205c24>] xlog_state_release_iclog+0xce/0x116 [<c020493d>] xlog_write+0x3bd/0x4b1 [<c0203502>] xfs_log_write+0x46/0x75 [<c0210b6c>] xfs_trans_commit+0x102/0x3d3 [<c02188f1>] xfs_remove+0x315/0x41c [<c0222edd>] linvfs_unlink+0x21/0x5b [<c016aefe>] vfs_unlink+0x159/0x194 [<c016afd5>] sys_unlink+0x9c/0x108 [<c0102f67>] sysenter_past_esp+0x54/0x75 Code: 89 7d fc 89 4d f0 89 c6 89 d3 83 0a 01 9c 5f fa b8 01 00 00 00 e8 87 93 fe ff 8d 53 0c 39 53 0c 75 0e 8b 46 04 89 73 0c 89 56 04 <8 <6>note: rm[11326] exited with preempt_count 2 scheduling while atomic: rm/0x10000002/11326 [<c0103e39>] dump_stack+0x17/0x19 [<c03d9fe3>] schedule+0x58d/0x653 [<c03da8b3>] cond_resched+0x25/0x40 [<c014b455>] unmap_vmas+0x15e/0x209 [<c014fbc5>] exit_mmap+0x7d/0x156