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c.f. bug 424647
List Archive: gentoo-sparc
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To: Gentoo Sparc <gentoo-sparc@g.o>
From: Ferris McCormick <fmccor@g.o>
Subject: [Fwd: soft lockup in 2.6.26-rc1+git, on Fire V100]
Date: Mon, 05 May 2008 16:17:43 +0000
For your information if you don't subscribe to sparclinux@

-------- Forwarded Message --------
From: Meelis Roos <mroos@...>
To: sparclinux@...
Subject: soft lockup in 2.6.26-rc1+git, on Fire V100
Date: 	Mon, 5 May 2008 19:13:34 +0300 (EEST)

Tried todays 2.6.26-rc1+git on a Fire V100. It mounted root etc as usual 
but hung during "Waiting for /dev to be fully populated...":

Linux Tulip driver version 1.1.15-NAPI (Feb 27, 2007)
tulip0: Old style EEPROM with no media selection information.
tulip0:  MII transceiver #1 config 1000 status 782d advertising 01e1.
eth0: Davicom DM9102/DM9102A rev 49 at MMIO 0x1ff00000000, EEPROM not present, 00:03:ba:11:b3:71, IRQ 9.
tulip1: Old style EEPROM with no media selection information.
tulip1:  MII transceiver #1 config 1000 status 7809 advertising 01e1.
eth1: Davicom DM9102/DM9102A rev 49 at MMIO 0x1ff00002000, EEPROM not present, 00:03:ba:11:b3:72, IRQ 10.
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
ohci_hcd 0000:00:0a.0: OHCI Host Controller
ohci_hcd 0000:00:0a.0: new USB bus registered, assigned bus number 1
ohci_hcd 0000:00:0a.0: irq 11, io mem 0x1ff01000000
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
Driver 'sr' needs updating - please use bus_type methods
usb usb1: New USB device found, idVendor=1d6b, idProduct=0001
usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb1: Product: OHCI Host Controller
usb usb1: Manufacturer: Linux 2.6.26-rc1-00050-gf74d505-dirty ohci_hcd
usb usb1: SerialNumber: 0000:00:0a.0

[
Now was a pause and the the following soft lockup message appeard. 
Sysrq-T is caoused by me, trying to understand what modprobe has caused 
this but there are several of them running.
]

BUG: soft lockup - CPU#0 stuck for 61s! [modprobe:414]
TSTATE: 0000001980009603 TPC: 00000000005e3c48 TNPC: 00000000005e3c4c Y: 00000000    Not tainted
TPC: <neigh_periodic_timer+0xd0/0x160>
g0: 0000000000009000 g1: 0000000000000002 g2: 00000000000005dc g3: 0000000000000001
g4: fffff8006e4d0ac0 g5: 73725f6d6f640010 g6: fffff8006e144000 g7: 0000000000000000
o0: 0000000000000002 o1: fffff8006e144400 o2: 00000000005e3b84 o3: 0000000000000000
o4: fffff8006e1b4e10 o5: 0000000000000001 sp: fffff8006e1466b1 ret_pc: 0000000000404980
RPC: <__handle_softirq+0x8/0x10>
l0: 00000000ffffa657 l1: 0000000000000001 l2: 00000000005e3b80 l3: 0000000000000400
l4: 0000000000000000 l5: 0000000000000003 l6: 0000000000000000 l7: 0000000000000008
i0: 000000000071d660 i1: fffff8006e003290 i2: 0000000000000001 i3: 7fffffffffffffff
i4: 0000000000700730 i5: 0000000000700780 i6: fffff8006e146771 i7: 000000000045d9e0
I7: <run_timer_softirq+0x188/0x200>

SysRq : Show State
  task                        PC stack   pid father
init          R  running task        0     1      0
Call Trace:
 [000000000065bd18] schedule_timeout+0x60/0xc0
 [00000000004bab3c] do_select+0x3a4/0x440
 [00000000004e0cb8] compat_core_sys_select+0x140/0x200
 [00000000004e122c] compat_sys_select+0xf4/0x1c0
 [00000000004060d4] linux_sparc_syscall32+0x3c/0x40
 [0000000000014c00] 0x14c08
kthreadd      S 0000000000426d90     0     2      0
Call Trace:
 [0000000000468894] kthreadd+0x11c/0x180
 [0000000000426d90] kernel_thread+0x38/0x60
 [0000000000655d04] rest_init+0x2c/0x60
ksoftirqd/0   R  running task        0     3      2
Call Trace:
 [0000000000459288] ksoftirqd+0xb0/0x100
 [000000000046893c] kthread+0x44/0x80
 [0000000000426d90] kernel_thread+0x38/0x60
 [0000000000468840] kthreadd+0xc8/0x180
watchdog/0    R  running task        0     4      2
Call Trace:
 [000000000047d4fc] watchdog+0xa4/0x200
 [000000000046893c] kthread+0x44/0x80
 [0000000000426d90] kernel_thread+0x38/0x60
 [0000000000468840] kthreadd+0xc8/0x180
events/0      R  running task        0     5      2
Call Trace:
 [0000000000464c20] worker_thread+0xa8/0xc0
 [000000000046893c] kthread+0x44/0x80
 [0000000000426d90] kernel_thread+0x38/0x60
 [0000000000468840] kthreadd+0xc8/0x180
khelper       S 000000000046893c     0     6      2
Call Trace:
 [0000000000464c20] worker_thread+0xa8/0xc0
 [000000000046893c] kthread+0x44/0x80
 [0000000000426d90] kernel_thread+0x38/0x60
 [0000000000468840] kthreadd+0xc8/0x180
kblockd/0     R  running task        0    90      2
Call Trace:
 [0000000000464c20] worker_thread+0xa8/0xc0
 [000000000046893c] kthread+0x44/0x80
 [0000000000426d90] kernel_thread+0x38/0x60
 [0000000000468840] kthreadd+0xc8/0x180
cqueue        S 000000000046893c     0    92      2
Call Trace:
 [0000000000464c20] worker_thread+0xa8/0xc0
 [000000000046893c] kthread+0x44/0x80
 [0000000000426d90] kernel_thread+0x38/0x60
 [0000000000468840] kthreadd+0xc8/0x180
ata/0         S 000000000046893c     0    96      2
Call Trace:
 [0000000000464c20] worker_thread+0xa8/0xc0
 [000000000046893c] kthread+0x44/0x80
 [0000000000426d90] kernel_thread+0x38/0x60
 [0000000000468840] kthreadd+0xc8/0x180
ata_aux       S 000000000046893c     0    97      2
Call Trace:
 [0000000000464c20] worker_thread+0xa8/0xc0
 [000000000046893c] kthread+0x44/0x80
 [0000000000426d90] kernel_thread+0x38/0x60
 [0000000000468840] kthreadd+0xc8/0x180
pdflush       S 000000000046893c     0   120      2
Call Trace:
 [000000000048bfe4] pdflush+0xcc/0x1c0
 [000000000046893c] kthread+0x44/0x80
 [0000000000426d90] kernel_thread+0x38/0x60
 [0000000000468840] kthreadd+0xc8/0x180
pdflush       R  running task        0   121      2
Call Trace:
 [000000000048bfe4] pdflush+0xcc/0x1c0
 [000000000046893c] kthread+0x44/0x80
 [0000000000426d90] kernel_thread+0x38/0x60
 [0000000000468840] kthreadd+0xc8/0x180
kswapd0       S 000000000046893c     0   122      2
Call Trace:
 [000000000048ffa8] kswapd+0x4b0/0x4c0
 [000000000046893c] kthread+0x44/0x80
 [0000000000426d90] kernel_thread+0x38/0x60
 [0000000000468840] kthreadd+0xc8/0x180
aio/0         S 000000000046893c     0   181      2
Call Trace:
 [0000000000464c20] worker_thread+0xa8/0xc0
 [000000000046893c] kthread+0x44/0x80
 [0000000000426d90] kernel_thread+0x38/0x60
 [0000000000468840] kthreadd+0xc8/0x180
scsi_eh_0     S 000000000046893c     0   286      2
Call Trace:
 [00000000005a2c84] scsi_error_handler+0x8c/0x3e0
 [000000000046893c] kthread+0x44/0x80
 [0000000000426d90] kernel_thread+0x38/0x60
 [0000000000468840] kthreadd+0xc8/0x180
scsi_eh_1     R  running task        0   289      2
Call Trace:
 [00000000005a2c84] scsi_error_handler+0x8c/0x3e0
 [000000000046893c] kthread+0x44/0x80
 [0000000000426d90] kernel_thread+0x38/0x60
 [0000000000468840] kthreadd+0xc8/0x180
kjournald     S 000000000046893c     0   313      2
Call Trace:
 [000000000052869c] kjournald+0x164/0x1a0
 [000000000046893c] kthread+0x44/0x80
 [0000000000426d90] kernel_thread+0x38/0x60
 [0000000000468840] kthreadd+0xc8/0x180
init          S 0000000000457198     0   318      1
Call Trace:
 [0000000000456e08] do_wait+0x8f0/0xc00
 [0000000000457198] sys_wait4+0x80/0xc0
 [00000000004060d4] linux_sparc_syscall32+0x3c/0x40
 [00000000000155bc] 0x155c4
rc            S 0000000000457198     0   319    318
Call Trace:
 [0000000000456e08] do_wait+0x8f0/0xc00
 [0000000000457198] sys_wait4+0x80/0xc0
 [00000000004060d4] linux_sparc_syscall32+0x3c/0x40
 [0000000000046808] 0x46810
S03udev       S 0000000000457198     0   351    319
Call Trace:
 [0000000000456e08] do_wait+0x8f0/0xc00
 [0000000000457198] sys_wait4+0x80/0xc0
 [00000000004060d4] linux_sparc_syscall32+0x3c/0x40
 [0000000000046808] 0x46810
udevd         R  running task        0   382      1
Call Trace:
 [0000000000404990] __handle_preemption+0x8/0x10
 [000000000000017e] 0x186
udevsettle    R  running task        0   398    351
Call Trace:
 [000000000065cc04] do_nanosleep+0x8c/0xc0
 [000000000046c2dc] hrtimer_nanosleep+0x64/0xe0
 [000000000047cd2c] compat_sys_nanosleep+0x94/0x100
 [00000000004060d4] linux_sparc_syscall32+0x3c/0x40
 [00000000f7ed83f8] 0xf7ed8400
udevd         S 0000000000457198     0   413    382
Call Trace:
 [0000000000456e08] do_wait+0x8f0/0xc00
 [0000000000457198] sys_wait4+0x80/0xc0
 [00000000004060d4] linux_sparc_syscall32+0x3c/0x40
 [0000000000017fdc] 0x17fe4
modprobe      R  running task        0   414    413
Call Trace:
 [000000000058bda8] __handle_sysrq+0xd0/0x1a0
 [0000000000592500] sunsu_serial_interrupt+0x4e8/0x6c0
 [000000000047dd4c] handle_IRQ_event+0x34/0xa0
 [000000000047f2dc] handle_fasteoi_irq+0x64/0xe0
 [000000000042d548] handler_irq+0x70/0xa0
 [00000000004208b4] tl0_irq5+0x1c/0x20
 [0000000000404980] __handle_softirq+0x8/0x10
 [000000000045d9e0] run_timer_softirq+0x188/0x200
 [00000000004590e4] __do_softirq+0x6c/0xe0
 [00000000004591b8] do_softirq+0x60/0x80
 [0000000000459344] irq_exit+0x6c/0xa0
 [000000000042d558] handler_irq+0x80/0xa0
 [00000000004208b4] tl0_irq5+0x1c/0x20
 [fffff8006e147619] 0xfffff8006e147621
 [000000001001d638] usb_hcd_poll_rh_status+0x40/0x180 [usbcore]
 [000000001001dafc] usb_add_hcd+0x384/0x5c0 [usbcore]
khubd         R  running task        0   451      2
Call Trace:
 [000000001001c558] hub_thread+0xf20/0xfe0 [usbcore]
 [000000000046893c] kthread+0x44/0x80
 [0000000000426d90] kernel_thread+0x38/0x60
 [0000000000468840] kthreadd+0xc8/0x180
udevd         S 00000000004bab3c     0   457    382
Call Trace:
 [000000000065bd3c] schedule_timeout+0x84/0xc0
 [00000000004bab3c] do_select+0x3a4/0x440
 [00000000004e0cb8] compat_core_sys_select+0x140/0x200
 [00000000004e1164] compat_sys_select+0x2c/0x1c0
 [00000000004060d4] linux_sparc_syscall32+0x3c/0x40
 [0000000000017cec] 0x17cf4
udevd         S 0000000000457198     0   464    382
Call Trace:
 [0000000000456e08] do_wait+0x8f0/0xc00
 [0000000000457198] sys_wait4+0x80/0xc0
 [00000000004060d4] linux_sparc_syscall32+0x3c/0x40
 [0000000000017fdc] 0x17fe4
modprobe      D 000000000065b408     0   465    464
Call Trace:
 [000000000065bd3c] schedule_timeout+0x84/0xc0
 [000000000065b408] wait_for_common+0x90/0x160
 [0000000000543230] blk_execute_rq+0x58/0xa0
 [00000000005a5974] scsi_execute+0xbc/0xe0
 [00000000005a59f4] scsi_execute_req+0x5c/0xc0
 [000000001005c28c] sr_test_unit_ready+0x54/0x120 [sr_mod]
 [000000001005ca78] sr_probe+0x1a0/0x5e0 [sr_mod]
 [000000000059780c] driver_probe_device+0x94/0x1a0
 [0000000000597974] __driver_attach+0x5c/0x80
 [000000000059704c] bus_for_each_dev+0x54/0x80
 [0000000000596860] bus_add_driver+0xa8/0x260
 [0000000000597b78] driver_register+0x60/0x160
 [0000000010064028] init_sr+0x30/0x4c [sr_mod]
 [0000000000478acc] sys_init_module+0x114/0x1800
 [00000000004060d4] linux_sparc_syscall32+0x3c/0x40
 [0000000000013f70] 0x13f78
vol_id        D 0000000000483a64     0   485    457
Call Trace:
 [000000000065bb1c] io_schedule+0x44/0xa0
 [0000000000483a64] sync_page+0x4c/0x80
 [0000000000483aa4] sync_page_killable+0xc/0x60
 [000000000065bf78] __wait_on_bit_lock+0x60/0xa0
 [0000000000483980] __lock_page_killable+0x48/0x60
 [0000000000485dc0] generic_file_aio_read+0x328/0x5a0
 [00000000004ac190] do_sync_read+0x98/0xe0
 [00000000004acc68] vfs_read+0x70/0x140
 [00000000004acdec] sys_read+0x34/0x60
 [00000000004060d4] linux_sparc_syscall32+0x3c/0x40
 [00000000f7ec7f48] 0xf7ec7f50
udevd         ? 0000000000457a64     0   498    382
Call Trace:
 [00000000004577d4] do_exit+0x51c/0x780
 [0000000000457a64] do_group_exit+0x2c/0xc0
 [00000000004060d4] linux_sparc_syscall32+0x3c/0x40
 [00000000f7e59550] 0xf7e59558

-- 
Ferris McCormick (P44646, MI) <fmccor@g.o>
Developer, Gentoo Linux (Devrel, Sparc, Userrel, Trustees)
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