> Paul, what's the best way to figure out these CPU stalls?
>
> The second oops is in blk_mq_map_queue() which is a trivial
> two level cpu lookup. I wonder if there's something odd about
> cpu numbers on these big old sparc systems?
CPU numbers are sparse - they are determined by hardware slot number and
some models only fill every other mainboard slot, and first slots can be
free. I have first board offline and currently have CPUs numbered
10,11,14,15 online.
Here is debug with Jens's patch:
screen not found.
Can't open input device.
Keyboard not present. Using ttya for input and output.
4-slot Sun Enterprise 3000, No Keyboard
OpenBoot 3.2.29, 4096 MB memory installed, Serial #51540060.
Copyright 2001 Sun Microsystems, Inc. All rights reserved
Ethernet address 0:3:ba:12:70:5c, Host ID: 8312705c.
Rebooting with command: boot
Boot device: disk File and args:
SILO Version 1.4.14
boot:
Allocated 64 Megs of memory at 0x40000000 for kernel
\Uncompressing image...
|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-
\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|Loaded kernel version 3.18.0
[ 0.000000] PROMLIB: Sun IEEE Boot Prom 'OBP 3.2.29 2001/06/18 17:28'
[ 0.000000] PROMLIB: Root node compatible:
[ 0.000000] Linux version 3.18.0-rc4-00052-g04689e7-dirty (mroos@mandel) (gcc version 4.9.2 (Debian 4.9.2-1) ) #26 SMP Fri Nov 14 21:22:28 EET 2014
[ 0.000000] debug: ignoring loglevel setting.
[ 0.000000] bootconsole [earlyprom0] enabled
[ 0.000000] ARCH: SUN4U
[ 0.000000] Ethernet address: 00:03:ba:12:70:5c
[ 0.000000] MM: PAGE_OFFSET is 0xfffff80000000000 (max_phys_bits == 40)
[ 0.000000] MM: VMALLOC [0x0000000100000000 --> 0x0000060000000000]
[ 0.000000] MM: VMEMMAP [0x0000060000000000 --> 0x00000c0000000000]
[ 0.000000] Kernel: Using 2 locked TLB entries for main kernel image.
[ 0.000000] Remapping the kernel... done.
[ 0.000000] OF stdout device is: /central@1f,0/fhc@0,f8800000/zs@0,902000:a
[ 0.000000] PROM: Built device tree with 92727 bytes of memory.
[ 0.000000] Top of RAM: 0xffd16000, Total RAM: 0xff954000
[ 0.000000] Memory hole size: 3MB
[ 0.000000] Allocated 16384 bytes for kernel page tables.
[ 0.000000] Zone ranges:
[ 0.000000] Normal [mem 0x00000000-0xffd15fff]
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x00000000-0xff84dfff]
[ 0.000000] node 0: [mem 0xffc00000-0xffceffff]
[ 0.000000] node 0: [mem 0xffd00000-0xffd15fff]
[ 0.000000] Initmem setup node 0 [mem 0x00000000-0xffd15fff]
[ 0.000000] On node 0 totalpages: 523434
[ 0.000000] Normal zone: 4094 pages used for memmap
[ 0.000000] Normal zone: 0 pages reserved
[ 0.000000] Normal zone: 523434 pages, LIFO batch:15
[ 0.000000] Booting Linux...
[ 0.000000] CPU CAPS: [flush,stbar,swap,muldiv,v9,mul32,div32,v8plus]
[ 0.000000] CPU CAPS: [vis]
[ 0.000000] PERCPU: Embedded 7 pages/cpu @fffff800ff400000 s13248 r8192 d35904 u1048576
[ 0.000000] pcpu-alloc: s13248 r8192 d35904 u1048576 alloc=1*4194304
[ 0.000000] pcpu-alloc: [0] 10 11 14 15
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 519340
[ 0.000000] Kernel command line: root=/dev/sda2 ro ignore_loglevel
[ 0.000000] PID hash table entries: 4096 (order: 2, 32768 bytes)
[ 0.000000] Dentry cache hash table entries: 524288 (order: 9, 4194304 bytes)
[ 0.000000] Inode-cache hash table entries: 262144 (order: 8, 2097152 bytes)
[ 0.000000] Sorting __ex_table...
[ 0.000000] Memory: 4142488K/4187472K available (3653K kernel code, 246K rwdata, 800K rodata, 184K init, 413K bss, 44984K reserved)
[ 0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=16, Nodes=1
[ 0.000000] Hierarchical RCU implementation.
[ 0.000000] Additional per-CPU info printed with stalls.
[ 0.000000] NR_IRQS:2048 nr_irqs:2048 1
[ 133.553714] clocksource: mult[2042108] shift[23]
[ 133.608322] clockevent: mult[3f7ced91] shift[32]
[ 133.663820] Console: colour dummy device 80x25
[ 133.716752] console [tty0] enabled
[ 133.757332] bootconsole [earlyprom0] disabled
[ 0.000000] PROMLIB: Sun IEEE Boot Prom 'OBP 3.2.29 2001/06/18 17:28'
[ 0.000000] PROMLIB: Root node compatible:
[ 0.000000] Linux version 3.18.0-rc4-00052-g04689e7-dirty (mroos@mandel) (gcc version 4.9.2 (Debian 4.9.2-1) ) #26 SMP Fri Nov 14 21:22:28 EET 2014
[ 0.000000] debug: ignoring loglevel setting.
[ 0.000000] bootconsole [earlyprom0] enabled
[ 0.000000] ARCH: SUN4U
[ 0.000000] Ethernet address: 00:03:ba:12:70:5c
[ 0.000000] MM: PAGE_OFFSET is 0xfffff80000000000 (max_phys_bits == 40)
[ 0.000000] MM: VMALLOC [0x0000000100000000 --> 0x0000060000000000]
[ 0.000000] MM: VMEMMAP [0x0000060000000000 --> 0x00000c0000000000]
[ 0.000000] Kernel: Using 2 locked TLB entries for main kernel image.
[ 0.000000] Remapping the kernel... done.
[ 0.000000] OF stdout device is: /central@1f,0/fhc@0,f8800000/zs@0,902000:a
[ 0.000000] PROM: Built device tree with 92727 bytes of memory.
[ 0.000000] Top of RAM: 0xffd16000, Total RAM: 0xff954000
[ 0.000000] Memory hole size: 3MB
[ 0.000000] Allocated 16384 bytes for kernel page tables.
[ 0.000000] Zone ranges:
[ 0.000000] Normal [mem 0x00000000-0xffd15fff]
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x00000000-0xff84dfff]
[ 0.000000] node 0: [mem 0xffc00000-0xffceffff]
[ 0.000000] node 0: [mem 0xffd00000-0xffd15fff]
[ 0.000000] Initmem setup node 0 [mem 0x00000000-0xffd15fff]
[ 0.000000] On node 0 totalpages: 523434
[ 0.000000] Normal zone: 4094 pages used for memmap
[ 0.000000] Normal zone: 0 pages reserved
[ 0.000000] Normal zone: 523434 pages, LIFO batch:15
[ 0.000000] Booting Linux...
[ 0.000000] CPU CAPS: [flush,stbar,swap,muldiv,v9,mul32,div32,v8plus]
[ 0.000000] CPU CAPS: [vis]
[ 0.000000] PERCPU: Embedded 7 pages/cpu @fffff800ff400000 s13248 r8192 d35904 u1048576
[ 0.000000] pcpu-alloc: s13248 r8192 d35904 u1048576 alloc=1*4194304
[ 0.000000] pcpu-alloc: [0] 10 11 14 15
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 519340
[ 0.000000] Kernel command line: root=/dev/sda2 ro ignore_loglevel
[ 0.000000] PID hash table entries: 4096 (order: 2, 32768 bytes)
[ 0.000000] Dentry cache hash table entries: 524288 (order: 9, 4194304 bytes)
[ 0.000000] Inode-cache hash table entries: 262144 (order: 8, 2097152 bytes)
[ 0.000000] Sorting __ex_table...
[ 0.000000] Memory: 4142488K/4187472K available (3653K kernel code, 246K rwdata, 800K rodata, 184K init, 413K bss, 44984K reserved)
[ 0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=16, Nodes=1
[ 0.000000] Hierarchical RCU implementation.
[ 0.000000] Additional per-CPU info printed with stalls.
[ 0.000000] NR_IRQS:2048 nr_irqs:2048 1
[ 133.553714] clocksource: mult[2042108] shift[23]
[ 133.608322] clockevent: mult[3f7ced91] shift[32]
[ 133.663820] Console: colour dummy device 80x25
[ 133.716752] console [tty0] enabled
[ 133.757332] bootconsole [earlyprom0] disabled
[ 133.959600] Calibrating delay using timer specific routine.. 497.44 BogoMIPS (lpj=2487228)
[ 133.959672] pid_max: default: 32768 minimum: 301
[ 133.960109] Mount-cache hash table entries: 8192 (order: 3, 65536 bytes)
[ 133.960172] Mountpoint-cache hash table entries: 8192 (order: 3, 65536 bytes)
[ 133.971050] CPU 11: synchronized TICK with master CPU (last diff -1 cycles, maxerr 516 cycles)
[ 133.975491] CPU 14: synchronized TICK with master CPU (last diff -3 cycles, maxerr 531 cycles)
[ 133.979943] CPU 15: synchronized TICK with master CPU (last diff -3 cycles, maxerr 531 cycles)
[ 133.980146] Brought up 4 CPUs
[ 133.982246] devtmpfs: initialized
[ 134.055642] device-tree: Duplicate name in base, renamed to "fhc#1"
[ 134.058336] device-tree: Duplicate name in base, renamed to "fhc#2"
[ 134.060857] device-tree: Duplicate name in base, renamed to "counter-timer#1"
[ 134.062360] NET: Registered protocol family 16
[ 134.079082] SYSIO: UPA portID ffffffff, at 000001c400000000
[ 134.089731] SYSIO: UPA portID ffffffff, at 000001c600000000
[ 134.144239] SCSI subsystem initialized
[ 134.147262] /central/fhc@0,f8800000/eeprom@0,908000: Mostek regs at 0x1fff8908000
[ 134.148285] fhc: Board #1, Version[1] PartID[fa0] Manuf[3e] (Central)
[ 134.148648] fhc: Board #5, Version[1] PartID[fa0] Manuf[3e] (JTAG Master)
[ 134.148987] fhc: Board #7, Version[1] PartID[fa0] Manuf[3e]
[ 134.149333] fhc: Board #1, Version[1] PartID[fa0] Manuf[3e]
[ 134.149825] clock_board: Detected 4 slot Enterprise system.
[ 134.150613] Switched to clocksource tick
[ 134.176770] NET: Registered protocol family 2
[ 134.179169] TCP established hash table entries: 32768 (order: 5, 262144 bytes)
[ 134.180949] TCP bind hash table entries: 32768 (order: 6, 524288 bytes)
[ 134.184045] TCP: Hash tables configured (established 32768 bind 32768)
[ 134.184824] TCP: reno registered
[ 134.184910] UDP hash table entries: 2048 (order: 3, 65536 bytes)
[ 134.185446] UDP-Lite hash table entries: 2048 (order: 3, 65536 bytes)
[ 134.186828] NET: Registered protocol family 1
[ 134.191719] futex hash table entries: 1024 (order: 3, 65536 bytes)
[ 134.192341] audit: initializing netlink subsys (disabled)
[ 134.192704] audit: type=2000 audit(0.409:1): initialized
[ 134.194109] HugeTLB registered 8 MB page size, pre-allocated 0 pages
[ 134.232599] msgmni has been set to 8090
[ 134.235554] io scheduler noop registered
[ 134.236738] io scheduler cfq registered (default)
[ 134.445702] zs f005ddbc: ttyS0 at MMIO 0x1fff8902000 (irq = 2, base_baud = 307200) is a zs (ESCC)
[ 134.445807] Console: ttyS0 (SunZilog zs0)
[ 140.474391] console [ttyS0] enabled
[ 140.517028] zs f005ddbc: ttyS1 at MMIO 0x1fff8902004 (irq = 2, base_baud = 307200) is a zs (ESCC)
[ 140.831526] f005de94: Keyboard at MMIO 0x1fff8904000 (irq = 2) is a zs
[ 140.907727] f005de94: Mouse at MMIO 0x1fff8904004 (irq = 2) is a zs
[ 140.985352] esp: esp0, regs[1c738810000:1c738800000] irq[19]
[ 141.051123] esp: esp0 is a FASHME, 40 MHz (ccf=0), SCSI ID 7
[ 144.120661] scsi host0: esp
[ 144.153625] cpumap 0 -> 0
[ 144.155824] rtc-m48t59 rtc-m48t59.0: rtc core: registered m48t59 as rtc0
[ 144.156895] TCP: cubic registered
[ 144.159012] NET: Registered protocol family 10
[ 144.161613] NET: Registered protocol family 17
[ 144.183269] rtc-m48t59 rtc-m48t59.0: setting system clock to 2014-11-14 19:32:50 UTC (1415993570)
[ 144.515654] cpumap 1 -> 0
[ 144.515661] cpumap 2 -> 0
[ 144.515668] cpumap 3 -> 0
[ 144.578311] scsi 0:0:0:0: Direct-Access HP 36.4G ST336706LC HP03 PQ: 0 ANSI: 2
[ 144.578399] scsi target0:0:0: Beginning Domain Validation
[ 144.781389] scsi target0:0:0: FAST-10 WIDE SCSI 20.0 MB/s ST (100 ns, offset 15)
[ 144.874152] scsi target0:0:0: Domain Validation skipping write tests
[ 144.948317] scsi target0:0:0: Ending Domain Validation
[ 145.009775] cpumap 0 -> 0
[ 145.040968] cpumap 1 -> 0
[ 145.072219] cpumap 2 -> 0
[ 145.103471] cpumap 3 -> 0
[ 145.139419] cpumap 0 -> 0
[ 145.168745] cpumap 1 -> 0
[ 145.199961] cpumap 2 -> 0
[ 145.231239] cpumap 3 -> 0
[ 145.266910] scsi 0:0:1:0: Direct-Access HP 36.4G ST336706LC HP03 PQ: 0 ANSI: 2
[ 145.361859] scsi target0:0:1: Beginning Domain Validation
[ 145.442413] scsi target0:0:1: FAST-10 WIDE SCSI 20.0 MB/s ST (100 ns, offset 15)
[ 145.535183] scsi target0:0:1: Domain Validation skipping write tests
[ 145.609277] scsi target0:0:1: Ending Domain Validation
[ 145.670737] cpumap 0 -> 0
[ 145.701937] cpumap 1 -> 0
[ 145.733179] cpumap 2 -> 0
[ 145.764438] cpumap 3 -> 0
[ 145.800352] cpumap 0 -> 0
[ 145.829580] cpumap 1 -> 0
[ 145.860840] cpumap 2 -> 0
[ 145.892057] cpumap 3 -> 0
[ 145.925446] scsi 0:0:2:0: Direct-Access IBM DDYS-T18350M S96H PQ: 0 ANSI: 3
[ 146.020469] scsi target0:0:2: Beginning Domain Validation
[ 146.089203] scsi target0:0:2: FAST-10 WIDE SCSI 20.0 MB/s ST (100 ns, offset 15)
[ 146.177232] scsi target0:0:2: Domain Validation skipping write tests
[ 146.251884] scsi target0:0:2: Ending Domain Validation
[ 146.316577] cpumap 0 -> 0
[ 146.345795] cpumap 1 -> 0
[ 146.377040] cpumap 2 -> 0
[ 146.408293] cpumap 3 -> 0
[ 146.673873] cpumap 0 -> 0
[ 146.703213] cpumap 1 -> 0
[ 146.734403] cpumap 2 -> 0
[ 146.765655] cpumap 3 -> 0
[ 147.031177] cpumap 0 -> 0
[ 147.060473] cpumap 1 -> 0
[ 147.091691] cpumap 2 -> 0
[ 147.122912] cpumap 3 -> 0
[ 147.388455] cpumap 0 -> 0
[ 147.417784] cpumap 1 -> 0
[ 147.449042] cpumap 2 -> 0
[ 147.480263] cpumap 3 -> 0
[ 147.745790] cpumap 0 -> 0
[ 147.775043] cpumap 1 -> 0
[ 147.806290] cpumap 2 -> 0
[ 147.837513] cpumap 3 -> 0
[ 148.103042] cpumap 0 -> 0
[ 148.132294] cpumap 1 -> 0
[ 148.163545] cpumap 2 -> 0
[ 148.194764] cpumap 3 -> 0
[ 148.460272] cpumap 0 -> 0
[ 148.489543] cpumap 1 -> 0
[ 148.520811] cpumap 2 -> 0
[ 148.552023] cpumap 3 -> 0
[ 148.817566] cpumap 0 -> 0
[ 148.846902] cpumap 1 -> 0
[ 148.878149] cpumap 2 -> 0
[ 148.909376] cpumap 3 -> 0
[ 149.174889] cpumap 0 -> 0
[ 149.204155] cpumap 1 -> 0
[ 149.235405] cpumap 2 -> 0
[ 149.266626] cpumap 3 -> 0
[ 149.532161] cpumap 0 -> 0
[ 149.561399] cpumap 1 -> 0
[ 149.592655] cpumap 2 -> 0
[ 149.623879] cpumap 3 -> 0
[ 149.889390] cpumap 0 -> 0
[ 149.918654] cpumap 1 -> 0
[ 149.949909] cpumap 2 -> 0
[ 149.981142] cpumap 3 -> 0
[ 150.246664] cpumap 0 -> 0
[ 150.275908] cpumap 1 -> 0
[ 150.307160] cpumap 2 -> 0
[ 150.338381] cpumap 3 -> 0
[ 150.607451] sd 0:0:0:0: [sda] 71132960 512-byte logical blocks: (36.4 GB/33.9 GiB)
[ 150.697659] sd 0:0:0:0: [sda] Write Protect is off
[ 150.753382] sd 0:0:0:0: [sda] Mode Sense: 9f 00 10 08
[ 150.815185] sd 0:0:1:0: [sdb] 71132960 512-byte logical blocks: (36.4 GB/33.9 GiB)
[ 150.905748] sd 0:0:2:0: [sdc] Spinning up disk...
[ 150.960893] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, supports DPO and FUA
[ 150.961063] sd 0:0:1:0: [sdb] Write Protect is off
[ 150.961090] sd 0:0:1:0: [sdb] Mode Sense: 9f 00 10 08
[ 151.121334] sd 0:0:1:0: [sdb] Write cache: disabled, read cache: enabled, supports DPO and FUA
[ 151.294739] sdb: unknown partition table
[ 151.342046] sda: sda1 sda2 sda3 sda4
[ 151.384597] Unable to handle kernel paging request at virtual address fffff8027fd26000
[ 151.479529] tsk->{mm,active_mm}->context = 0000000000000000
[ 151.546016] tsk->{mm,active_mm}->pgd = fffff80000402000
[ 151.608509] \|/ ____ \|/
[ 151.608509] "@'/ .. \`@"
[ 151.608509] /_| \__/ |_\
[ 151.608509] \__U_/
[ 151.784621] kworker/u8:3(47): Oops [#1]
[ 151.830451] CPU: 10 PID: 47 Comm: kworker/u8:3 Not tainted 3.18.0-rc4-00052-g04689e7-dirty #26
[ 151.933636] Workqueue: events_unbound async_run_entry_fn[ 151.970501] .
[ 152.015747] task: fffff800fe7b0600 ti: fffff800fe7dc000 task.ti: fffff800fe7dc000
[ 152.105552] TSTATE: 0000004480001603 TPC: 00000000005f1cf8 TNPC: 00000000005f355c Y: 00000000 Not tainted
[ 152.223273] TPC: <blk_mq_map_queue+0x18/0x20>
[ 152.275378] g0: 0000000000000000 g1: 0000000181d19000 g2: fffff800fe00e880 g3: 000000000088ee30
[ 152.379472] g4: fffff800fe7b0600 g5: fffff800feb30000 g6: fffff800fe7dc000 g7: 0000000000000000
[ 152.483723] o0: fffff800fe7e0d20 o1: 0000000000000028 o2: fffff800fe7e1350 o3: fffff800fe7df690
[ 152.587912] o4: fffff800fe7e1338 o5: 0000000000000000 sp: fffff800fe7deea1 ret_pc: 00000000005f3554
[ 152.696267] sd 0:0:0:0: [sda] Attached SCSI disk
[ 152.751370] RPC: <blk_mq_alloc_request+0x54/0x120>
[ 152.808689] l0: 00000000008d4ec0 l1: 000000000089b800 l2: 0000000000000001 l3: 0000000000000000
[ 152.912852] l4: 0000000000000000 l5: 0000000000000000 l6: fffff800fe7df758 l7: 0000060001fa0aa0
[ 153.017063] i0: fffff800fe7e0d20 i1: 0000000000000000 i2: 0000000000000010 i3: 0000000000000000
[ 153.121224] i4: 00000000008d40c0 i5: fffff800ff408940 i6: fffff800fe7def71 i7: 000000000066c244
[ 153.225431] I7: <scsi_execute+0x24/0x140>
[ 153.273315] Call Trace:
[ 153.302472] [000000000066c244] scsi_execute+0x24/0x140
[ 153.364995] [000000000066c47c] scsi_execute_req_flags+0x5c/0xe0
[ 153.436887] [0000000000680f88] read_capacity_10+0x88/0x260
[ 153.503557] [00000000006824a4] sd_revalidate_disk+0xc44/0x1ea0
[ 153.574430] [00000000006838c8] sd_probe_async+0xc8/0x160
[ 153.639012] [000000000046fc94] async_run_entry_fn+0x34/0x100
[ 153.707783] [000000000046827c] process_one_work+0x15c/0x340
[ 153.775486] [0000000000468bf0] worker_thread+0x110/0x520
[ 153.840279] .
[ 153.840280] [000000000046d528] kthread+0xa8/0xe0
[ 153.915162] [00000000004060c4] ret_from_fork+0x1c/0x2c
[ 153.977768] [0000000000000000] (null)
[ 154.032819] Disabling lock debugging due to kernel taint
[ 154.096465] Caller[000000000066c244]: scsi_execute+0x24/0x140
[ 154.165310] Caller[000000000066c47c]: scsi_execute_req_flags+0x5c/0xe0
[ 154.243301] Caller[0000000000680f88]: read_capacity_10+0x88/0x260
[ 154.316264] Caller[00000000006824a4]: sd_revalidate_disk+0xc44/0x1ea0
[ 154.393343] Caller[00000000006838c8]: sd_probe_async+0xc8/0x160
[ 154.464168] Caller[000000000046fc94]: async_run_entry_fn+0x34/0x100
[ 154.539170] Caller[000000000046827c]: process_one_work+0x15c/0x340
[ 154.613136] Caller[0000000000468bf0]: worker_thread+0x110/0x520
[ 154.684012] Caller[000000000046d528]: kthread+0xa8/0xe0
[ 154.746495] Caller[00000000004060c4]: ret_from_fork+0x1c/0x2c
[ 154.815237] Caller[0000000000000000]: (null)
[ 154.876702] Instruction DUMP: c2004009 83287003 81c3e008 <d0588001> 01000000 9de3bf20 c201a038 b607a7ef b4062630
[ 155.005855] note: kworker/u8:3[47] exited with preempt_count 1
[ 155.075807] Unable to handle kernel paging request at virtual address ffffffffffffe000
[ 155.170494] tsk->{mm,active_mm}->context = 0000000000000000
[ 155.237136] tsk->{mm,active_mm}->pgd = fffff80000402000
[ 155.299651] \|/ ____ \|/
[ 155.299651] "@'/ .. \`@"
[ 155.299651] /_| \__/ |_\
[ 155.299651] \__U_/
[ 155.475822] .
[ 155.475823] kworker/u8:3(47): Oops [#2]
[ 155.540327] CPU: 10 PID: 47 Comm: kworker/u8:3 Tainted: G D 3.18.0-rc4-00052-g04689e7-dirty #26
[ 155.657078] task: fffff800fe7b0600 ti: fffff800fe7dc000 task.ti: fffff800fe7dc000
[ 155.746648] TSTATE: 0000000011e01602 TPC: 000000000046db08 TNPC: 000000000046908c Y: fcf8b5ad Tainted: G D
[ 155.877941] TPC: <kthread_data+0x8/0x20>
[ 155.924766] g0: 00000000008e0910 g1: 0000000000000000 g2: 00000000a1dc8b80 g3: ffffffffff76abc0
[ 156.028986] g4: fffff800fe7b0600 g5: fffff800feb30000 g6: fffff800fe7dc000 g7: ffffffffff76abc0
[ 156.133174] o0: fffff800fe7b0600 o1: fffff800fe7b0600 o2: 0000000000000001 o3: fffff800ff402840
[ 156.237363] o4: fffff800fe7b0690 o5: fffff800ff402840 sp: fffff800fe7de8c1 ret_pc: 0000000000469084
[ 156.345733] RPC: <wq_worker_sleeping+0x4/0xe0>
[ 156.398811] l0: 0000000000000000 l1: 00000000005300ab l2: 0000000000000000 l3: 0000000000000000
[ 156.503034] l4: 00000000005200ab l5: 000000000000002f l6: 0000000000000006 l7: 0000000000000004
[ 156.607217] i0: fffff800fe7b0600 i1: 000000000000000a i2: 0000000000000001 i3: 0000000000000000
[ 156.711405] i4: fffffffffffffefe i5: 0000000000000002 i6: fffff800fe7de971 i7: 0000000000791914
[ 156.815611] I7: <switch_to_pc+0x198/0x3a4>
[ 156.864512] Call Trace:
[ 156.893692] [0000000000791914] switch_to_pc+0x198/0x3a4
[ 156.957287] [0000000000454bd4] do_exit+0x5f4/0x9e0
[ 157.015601] [0000000000428744] die_if_kernel+0x184/0x300
[ 157.080198] [00000000007901d4] unhandled_fault+0x84/0x90
[ 157.144793] [0000000000444298] do_sparc64_fault+0x498/0x6e0
[ 157.212519] [0000000000407bcc] sparc64_realfault_common+0x10/0x20
[ 157.286495] [00000000005f1cf8] blk_mq_map_queue+0x18/0x20
[ 157.352127] [000000000066c244] scsi_execute+0x24/0x140
[ 157.414635] [000000000066c47c] scsi_execute_req_flags+0x5c/0xe0
[ 157.486521] [0000000000680f88] read_capacity_10+0x88/0x260
[ 157.553200] [00000000006824a4] sd_revalidate_disk+0xc44/0x1ea0
[ 157.624042] [00000000006838c8] sd_probe_async+0xc8/0x160
[ 157.688648] [000000000046fc94] async_run_entry_fn+0x34/0x100
[ 157.757414] [000000000046827c] process_one_work+0x15c/0x340
[ 157.825131] [0000000000468bf0] worker_thread+0x110/0x520
[ 157.889717] [000000000046d528] kthread+0xa8/0xe0
[ 157.945979] Caller[0000000000791914]: switch_to_pc+0x198/0x3a4
[ 158.015790] Caller[0000000000454bd4]: do_exit+0x5f4/0x9e0
[ 158.080374] Caller[0000000000428744]: die_if_kernel+0x184/0x300
[ 158.151225] Caller[00000000007901d4]: unhandled_fault+0x84/0x90
[ 158.222075] Caller[0000000000444298]: do_sparc64_fault+0x498/0x6e0
[ 158.296046] Caller[0000000000407bcc]: sparc64_realfault_common+0x10/0x20
[ 158.376270] Caller[00000000005f3554]: blk_mq_alloc_request+0x54/0x120
[ 158.453366] Caller[000000000066c244]: scsi_execute+0x24/0x140
[ 158.522124] Caller[000000000066c47c]: scsi_execute_req_flags+0x5c/0xe0
[ 158.600268] Caller[0000000000680f88]: read_capacity_10+0x88/0x260
[ 158.673196] Caller[00000000006824a4]: sd_revalidate_disk+0xc44/0x1ea0
[ 158.750289] Caller[00000000006838c8]: sd_probe_async+0xc8/0x160
[ 158.821142] Caller[000000000046fc94]: async_run_entry_fn+0x34/0x100
[ 158.896162] Caller[000000000046827c]: process_one_work+0x15c/0x340
[ 158.970135] Caller[0000000000468bf0]: worker_thread+0x110/0x520
[ 159.040969] Caller[000000000046d528]: kthread+0xa8/0xe0
[ 159.103483] Caller[00000000004060c4]: ret_from_fork+0x1c/0x2c
[ 159.172227] Caller[0000000000000000]: (null)
[ 159.233688] Instruction DUMP: 01000000 c25a2358 81c3e008 <d0587fd8> 30680005 01000000 01000000 01000000 01000000
[ 159.362867] Fixing recursive fault but reboot is needed!
[ 159.426448] BUG: scheduling while atomic: kworker/u8:3/47/0x00000005
[ 159.502490] Modules linked in:
[ 159.538956] CPU: 10 PID: 47 Comm: kworker/u8:3 Tainted: G D 3.18.0-rc4-00052-g04689e7-dirty #26
[ 159.655704] Call Trace:
[ 159.684829] [0000000000471780] __schedule_bug+0x40/0x60
[ 159.748388] [0000000000791a1c] switch_to_pc+0x2a0/0x3a4
[ 159.811944] [0000000000454dc4] do_exit+0x7e4/0x9e0
[ 159.870278] [0000000000428744] die_if_kernel+0x184/0x300
[ 159.934880] [00000000007901d4] unhandled_fault+0x84/0x90
[ 159.999474] [0000000000444298] do_sparc64_fault+0x498/0x6e0
[ 160.067193] [0000000000407bcc] sparc64_realfault_common+0x10/0x20
[ 160.141167] [000000000046db08] kthread_data+0x8/0x20
[ 160.201591] [0000000000791914] switch_to_pc+0x198/0x3a4
[ 160.265150] [0000000000454bd4] do_exit+0x5f4/0x9e0
[ 160.323485] [0000000000428744] die_if_kernel+0x184/0x300
[ 160.388088] [00000000007901d4] unhandled_fault+0x84/0x90
[ 160.452681] [0000000000444298] do_sparc64_fault+0x498/0x6e0
[ 160.520397] [0000000000407bcc] sparc64_realfault_common+0x10/0x20
[ 160.594378] [00000000005f1cf8] blk_mq_map_queue+0x18/0x20
[ 160.660012] [000000000066c244] scsi_execute+0x24/0x140
--
Meelis Roos (mroos@xxxxxxxx)
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