BUG: crash in __tlb_remove_page_size with STRICT_KERNEL_RWX on BOOK3S_32
Serge Belyshev
belyshev at depni.sinp.msu.ru
Sat Apr 27 00:38:50 AEST 2019
Hi!
> Could you please compile your kernel with CONFIG_PPC_PTDUMP, and
> provide the content of:
>
> /sys/kernel/debug/kernel_page_tables
---[ Start of kernel VM ]---
0xe1000000-0xefffffff 0x21000000 240M rw present dirty accessed
---[ vmalloc() Area ]---
0xf1000000-0xf1000fff 0x80041000 4K rw present guarded dirty accessed no cache
0xf1002000-0xf1003fff 0x80041000 8K rw present guarded dirty accessed no cache
0xf1005000-0xf1005fff 0x80060000 4K rw present guarded dirty accessed no cache
0xf1007000-0xf1007fff 0x80050000 4K rw present guarded dirty accessed no cache
0xf100a000-0xf100bfff 0xf8001000 8K rw present guarded dirty accessed no cache
0xf100d000-0xf100dfff 0x80018000 4K rw present guarded dirty accessed no cache
0xf1010000-0xf1011fff 0xa0006000 8K rw present guarded dirty accessed no cache
0xf101b000-0xf1025fff 0x3fc00000 44K rw present dirty accessed
0xf1027000-0xf1027fff 0xb87ff000 4K rw present guarded dirty accessed no cache
0xf1029000-0xf1029fff 0xba7ff000 4K rw present guarded dirty accessed no cache
0xf102b000-0xf106afff 0x2f300000 256K rw present guarded dirty accessed no cache
0xf106c000-0xf106ffff 0x3fc0b000 16K rw present dirty accessed
0xf1071000-0xf1071fff 0x80020000 4K rw present guarded dirty accessed no cache
0xf1074000-0xf1077fff 0xf5004000 16K rw present guarded dirty accessed no cache
0xf107a000-0xf107bfff 0x80008000 8K rw present guarded dirty accessed no cache
0xf107d000-0xf107dfff 0xf5000000 4K rw present guarded dirty accessed no cache
0xf1080000-0xf118afff 0xb8008000 1068K rw present guarded dirty accessed no cache
0xf1195000-0xf119cfff 0x2f3a0000 32K rw present dirty accessed
0xf119d000-0xf119efff 0x2f3a0000 8K rw present dirty accessed
0xf11a0000-0xf11a5fff 0x2f3a8000 24K rw present dirty accessed
0xf11a6000-0xf11a7fff 0x2f3da000 8K rw present dirty accessed
0xf11a8000-0xf11a9fff 0x2f3a8000 8K rw present dirty accessed
0xf11ab000-0xf11abfff 0xa0004000 4K rw present guarded dirty accessed no cache
0xf11ad000-0xf11adfff 0xa0000000 4K rw present guarded dirty accessed no cache
0xf11af000-0xf11affff 0xa0003000 4K rw present guarded dirty accessed no cache
0xf11b1000-0xf11b1fff 0xa0002000 4K rw present guarded dirty accessed no cache
0xf11b3000-0xf11b3fff 0xa0001000 4K rw present guarded dirty accessed no cache
0xf11b5000-0xf11b5fff 0x80010000 4K rw present guarded dirty accessed no cache
0xf11b7000-0xf11b7fff 0x80008000 4K rw present guarded dirty accessed no cache
0xf11b9000-0xf11b9fff 0x80008000 4K rw present guarded dirty accessed no cache
0xf11c0000-0xf11cffff 0x88000000 64K rw present guarded dirty accessed no cache
0xf11eb000-0xf11ebfff 0x3fc16000 4K rw present dirty accessed
0xf11ec000-0xf11ecfff 0x3fc15000 4K rw present dirty accessed
0xf11ed000-0xf11edfff 0x3fc14000 4K rw present dirty accessed
0xf1200000-0xf1259fff 0xba008000 360K rw present guarded dirty accessed no cache
0xf1280000-0xf147ffff 0xf5200000 2M rw present guarded dirty accessed no cache
---[ vmalloc() End ]---
---[ Early I/O remap start ]---
0xfde2b000-0xfde2cfff 0x80016000 8K rw present guarded dirty accessed no cache
0xfde2d000-0xfde2dfff 0x80000000 4K rw present guarded dirty accessed no cache
0xfde2e000-0xfde2efff 0xf8000000 4K rw present guarded dirty accessed no cache
0xfde2f000-0xfe62efff 0xf4000000 8M rw present guarded dirty accessed no cache
0xfe62f000-0xfe62ffff 0xf4c00000 4K rw present guarded dirty accessed no cache
0xfe630000-0xfe630fff 0xf4800000 4K rw present guarded dirty accessed no cache
0xfe631000-0xfee30fff 0xf2000000 8M rw present guarded dirty accessed no cache
0xfee31000-0xfee31fff 0xf2c00000 4K rw present guarded dirty accessed no cache
0xfee32000-0xfee32fff 0xf2800000 4K rw present guarded dirty accessed no cache
0xfee33000-0xff632fff 0xf0000000 8M rw present guarded dirty accessed no cache
0xff633000-0xff633fff 0xf0c00000 4K rw present guarded dirty accessed no cache
0xff634000-0xff634fff 0xf0800000 4K rw present guarded dirty accessed no cache
0xff635000-0xff73ffff 0xb8008000 1068K rw present dirty accessed no cache
0xff740000-0xff7bffff 0x80000000 512K rw present guarded dirty accessed no cache
0xff7c0000-0xff7fffff 0xf8000000 256K rw present guarded dirty accessed no cache
---[ Early I/O remap end ]---
---[ Highmem PTEs start ]---
0xff801000-0xff801fff 0x3f804000 4K rw present dirty accessed
0xff802000-0xff802fff 0x3f9c6000 4K rw present dirty accessed
0xff803000-0xff803fff 0x3fa22000 4K rw present dirty accessed
0xff804000-0xff804fff 0x3fa3b000 4K rw present dirty accessed
0xff805000-0xff805fff 0x3fa52000 4K rw present dirty accessed
0xff806000-0xff806fff 0x3fb3b000 4K rw present dirty accessed
0xff807000-0xff807fff 0x3fb52000 4K rw present dirty accessed
0xff808000-0xff808fff 0x3fb26000 4K rw present dirty accessed
0xff809000-0xff809fff 0x3fb48000 4K rw present dirty accessed
0xff80a000-0xff80afff 0x3fb79000 4K rw present dirty accessed
0xff80b000-0xff80bfff 0x3f9e4000 4K rw present dirty accessed
0xff80c000-0xff80cfff 0x3f574000 4K rw present dirty accessed
0xff80d000-0xff80dfff 0x3f5c6000 4K rw present dirty accessed
0xff80e000-0xff80efff 0x3f578000 4K rw present dirty accessed
0xff80f000-0xff80ffff 0x3f60a000 4K rw present dirty accessed
0xff810000-0xff810fff 0x3f791000 4K rw present dirty accessed
---[ Highmem PTEs end ]---
---[ Fixmap start ]---
0xfffde000-0xfffdefff 0x3f086000 4K rw present dirty accessed
0xfffdf000-0xfffdffff 0x3f08a000 4K rw present dirty accessed
---[ Fixmap end ]---
> /sys/kernel/debug/powerpc/block_address_translation
---[ Instruction Block Address Translation ]---
0: 0xc0000000-0xc07fffff 0x00000000 Kernel EXEC coherent
1: 0xc0800000-0xc087ffff 0x00800000 Kernel EXEC coherent
2: -
3: -
4: -
5: -
6: -
7: -
---[ Data Block Address Translation ]---
0: 0xc0000000-0xc07fffff 0x00000000 Kernel RO coherent
1: 0xc0800000-0xc0bfffff 0x00800000 Kernel RO coherent
2: 0xc0c00000-0xc13fffff 0x00c00000 Kernel RW coherent
3: 0xc1400000-0xc23fffff 0x01400000 Kernel RW coherent
4: 0xc2400000-0xc43fffff 0x02400000 Kernel RW coherent
5: 0xc4400000-0xc83fffff 0x04400000 Kernel RW coherent
6: 0xc8400000-0xd03fffff 0x08400000 Kernel RW coherent
7: 0xd0400000-0xe03fffff 0x10400000 Kernel RW coherent
> /sys/kernel/debug/powerpc/segment_registers
---[ User Segments ]---
0x00000000-0x0fffffff Kern key 1 User key 1 VSID 0x07aa30
0x10000000-0x1fffffff Kern key 1 User key 1 VSID 0x07ab41
0x20000000-0x2fffffff Kern key 1 User key 1 VSID 0x07ac52
0x30000000-0x3fffffff Kern key 1 User key 1 VSID 0x07ad63
0x40000000-0x4fffffff Kern key 1 User key 1 VSID 0x07ae74
0x50000000-0x5fffffff Kern key 1 User key 1 VSID 0x07af85
0x60000000-0x6fffffff Kern key 1 User key 1 VSID 0x07b096
0x70000000-0x7fffffff Kern key 1 User key 1 VSID 0x07b1a7
0x80000000-0x8fffffff Kern key 1 User key 1 VSID 0x07b2b8
0x90000000-0x9fffffff Kern key 1 User key 1 VSID 0x07b3c9
0xa0000000-0xafffffff Kern key 1 User key 1 VSID 0x07b4da
0xb0000000-0xbfffffff Kern key 1 User key 1 VSID 0x07b5eb
---[ Kernel Segments ]---
0xc0000000-0xcfffffff Kern key 0 User key 1 No Exec VSID 0x000ccc
0xd0000000-0xdfffffff Kern key 0 User key 1 No Exec VSID 0x000ddd
0xe0000000-0xefffffff Kern key 0 User key 1 No Exec VSID 0x000eee
0xf0000000-0xffffffff Kern key 0 User key 1 No Exec VSID 0x000fff
> Please also provide the begining of 'dmesg' that shows the memory layout.
[ 0.000000] Total memory = 1024MB; using 2048kB for hash table (at (ptrval))
[ 0.000000] Linux version 5.1.0-rc6-00072-g8113a85f8720 (ssb at spider) (gcc version 9.0.1 20190409 (experimental) [trunk revision 270234] (GCC)) #1192 PREEMPT Fri Apr 26 16:45:50 MSK 2019
[ 0.000000] Found UniNorth memory controller & host bridge @ 0xf8000000 revision: 0xd2
[ 0.000000] Mapped at 0xff7c0000
[ 0.000000] Found a Intrepid mac-io controller, rev: 0, mapped at 0x(ptrval)
[ 0.000000] Processor NAP mode on idle enabled.
[ 0.000000] PowerMac motherboard: PowerBook G4 15"
[ 0.000000] Using PowerMac machine description
[ 0.000000] printk: bootconsole [udbg0] enabled
[ 0.000000] -----------------------------------------------------
[ 0.000000] Hash_size = 0x200000
[ 0.000000] phys_mem_size = 0x40000000
[ 0.000000] dcache_bsize = 0x20
[ 0.000000] icache_bsize = 0x20
[ 0.000000] cpu_features = 0x000000002510600a
[ 0.000000] possible = 0x000000002f7ff14b
[ 0.000000] always = 0x0000000000000000
[ 0.000000] cpu_user_features = 0x9c000001 0x00000000
[ 0.000000] mmu_features = 0x00010001
[ 0.000000] Hash = 0x(ptrval)
[ 0.000000] Hash_mask = 0x7fff
[ 0.000000] -----------------------------------------------------
[ 0.000000] Found UniNorth PCI host bridge at 0x00000000f0000000. Firmware bus number: 0->1
[ 0.000000] PCI host bridge /pci at f0000000 ranges:
[ 0.000000] MEM 0x00000000f1000000..0x00000000f1ffffff -> 0x00000000f1000000
[ 0.000000] IO 0x00000000f0000000..0x00000000f07fffff -> 0x0000000000000000
[ 0.000000] MEM 0x00000000b0000000..0x00000000bfffffff -> 0x00000000b0000000
[ 0.000000] Found UniNorth PCI host bridge at 0x00000000f2000000. Firmware bus number: 0->1
[ 0.000000] PCI host bridge /pci at f2000000 (primary) ranges:
[ 0.000000] MEM 0x00000000f3000000..0x00000000f3ffffff -> 0x00000000f3000000
[ 0.000000] IO 0x00000000f2000000..0x00000000f27fffff -> 0x0000000000000000
[ 0.000000] MEM 0x0000000080000000..0x00000000afffffff -> 0x0000000080000000
[ 0.000000] Found UniNorth PCI host bridge at 0x00000000f4000000. Firmware bus number: 0->1
[ 0.000000] PCI host bridge /pci at f4000000 ranges:
[ 0.000000] MEM 0x00000000f5000000..0x00000000f5ffffff -> 0x00000000f5000000
[ 0.000000] IO 0x00000000f4000000..0x00000000f47fffff -> 0x0000000000000000
[ 0.000000] via-pmu: Server Mode is disabled
[ 0.000000] PMU driver v2 initialized for Core99, firmware: 0c
[ 0.000000] Top of RAM: 0x40000000, Total RAM: 0x40000000
[ 0.000000] Memory hole size: 0MB
[ 0.000000] Zone ranges:
[ 0.000000] Normal [mem 0x0000000000000000-0x000000002fffffff]
[ 0.000000] HighMem [mem 0x0000000030000000-0x000000003fffffff]
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000000000000-0x000000003fffffff]
[ 0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x000000003fffffff]
[ 0.000000] On node 0 totalpages: 262144
[ 0.000000] Normal zone: 1536 pages used for memmap
[ 0.000000] Normal zone: 0 pages reserved
[ 0.000000] Normal zone: 196608 pages, LIFO batch:63
[ 0.000000] HighMem zone: 65536 pages, LIFO batch:15
[ 0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
[ 0.000000] pcpu-alloc: [0] 0
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 260608
[ 0.000000] Kernel command line: root=/dev/hda3 ro console=ttyUSB0,115200 console=tty0 init=/boot/init
[ 0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
[ 0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
[ 0.000000] Memory: 1023092K/1048576K available (8704K kernel code, 348K rwdata, 1344K rodata, 212K init, 1176K bss, 25484K reserved, 0K cma-reserved, 262144K highmem)
[ 0.000000] Kernel virtual memory layout:
[ 0.000000] * 0xfffcf000..0xfffff000 : fixmap
[ 0.000000] * 0xff800000..0xffc00000 : highmem PTEs
[ 0.000000] * 0xfde2b000..0xff800000 : early ioremap
[ 0.000000] * 0xf1000000..0xfde2b000 : vmalloc & ioremap
[ 0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
full dmesg: http://aargh.no-ip.org/dmesg.txt
kernel config: http://aargh.no-ip.org/config.txt
> Thanks
> Christophe
Thanks!
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