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Message-ID: <e8528334-75cb-e62e-64b6-f6d63acebd05@wanyeetech.com>
Date: Tue, 20 Apr 2021 21:47:35 +0800
From: Zhou Yanjie <zhouyanjie@...yeetech.com>
To: Huang Pei <huangpei@...ngson.cn>
Cc: tsbogend@...ha.franken.de, linux-mips@...r.kernel.org,
linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
paul.burton@...s.com, paul@...pouillou.net, siyanteng@...ngson.cn,
ira.weiny@...el.com, yangtiezhu@...ngson.cn, jun.jiang@...enic.com,
dongsheng.qiu@...enic.com, aric.pzqi@...enic.com,
rick.tyliu@...enic.com, sernia.zhou@...mail.com
Subject: Re: [PATCH] Revert "MIPS: make userspace mapping young by default".
Hi,
On 2021/4/20 上午10:48, Huang Pei wrote:
> Hi,
> On Mon, Apr 19, 2021 at 10:21:40PM +0800, Zhou Yanjie wrote:
>> Hi
>>
>> On 2021/4/19 下午12:56, Huang Pei wrote:
>>> On Sat, Apr 17, 2021 at 12:45:59AM +0800, Zhou Yanjie wrote:
>>>> On 2021/4/16 下午5:20, 黄沛 wrote:
>>>>> Is there any log about the panic?
>>>> Yes, below is the log:
>>>>
>>>>
>>>> [ 195.436017] CPU 0 Unable to handle kernel paging request at virtual
>>>> address 77eb8000, epc == 80117868, ra == 80118208
>>>> [ 195.446709] Oops[#1]:
>>>> [ 195.448977] CPU: 0 PID: 1461 Comm: Xsession Not tainted
>>>> 5.12.0-rc6-00227-gc8fc6defbd2e-dirty #1
>>>> [ 195.457661] $ 0 : 00000000 00000001 80117864 77eb9000
>>>> [ 195.462888] $ 4 : 77eb8000 82419600 838ea000 82482ba0
>>>> [ 195.468116] $ 8 : 826f8b18 8306f800 000072d5 8306f800
>>>> [ 195.473343] $12 : 00000002 00000a03 00000001 00000402
>>>> [ 195.478568] $16 : 77eb8000 809faf60 00000004 82482ba0
>>>> [ 195.483794] $20 : 77eb8000 82419600 82482ba0 80860000
>>>> [ 195.489021] $24 : 8086121c 80117864
>>>> [ 195.494248] $28 : 838ea000 838ebd70 00000000 80118208
>>>> [ 195.499475] Hi : 00008c4e
>>>> [ 195.502343] Lo : 00004627
>>>> [ 195.505212] epc : 80117868 r4k_blast_dcache_page_dc32+0x4/0x9c
>>>> [ 195.511217] ra : 80118208 local_r4k_flush_cache_page+0x120/0x1b8
>>>> [ 195.517476] Status: 10001403 KERNEL EXL IE
>>>> [ 195.521657] Cause : 4080800c (ExcCode 03)
>>>> [ 195.525654] BadVA : 77eb8000
>>>> [ 195.528523] PrId : 00d00100 (Ingenic XBurst)
>>>> [ 195.532866] Modules linked in:
>>>> [ 195.535911] Process Xsession (pid: 1461, threadinfo=00975a3e,
>>>> task=3724fd66, tls=77ebd690)
>>>> [ 195.544162] Stack : 808a05ec f7edcbfd 8306f800 00000000 80860000 809faf60
>>>> 80990a3c 80117f90
>>>> [ 195.552524] 809faf60 82419600 8306f800 801fd84c 00000000 801180b4
>>>> 838ebe80 80110b7c
>>>> [ 195.560887] 80990a3c 82482ba0 82482ba0 77eb8000 00004627 f7edcbfd
>>>> 838ebe80 801cbc08
>>>> [ 195.569249] 00000001 181b2000 00000000 801fa06c 00000000 83999ae0
>>>> 80860000 00000004
>>>> [ 195.577610] 80990a3c f7edcbfd 80990a3c 838ebe80 00000004 80990a3c
>>>> 82482ba0 04627685
>>>> [ 195.585973] ...
>>>> [ 195.588413] Call Trace:
>>>> [ 195.590849] [<80117868>] r4k_blast_dcache_page_dc32+0x4/0x9c
>>>> [ 195.596501] [<80118208>] local_r4k_flush_cache_page+0x120/0x1b8
>>>> [ 195.602413] [<80117f90>] r4k_on_each_cpu.isra.8+0x24/0x58
>>>> [ 195.607805] [<801180b4>] r4k_flush_cache_page+0x34/0x58
>>>> [ 195.613023] [<801cbc08>] wp_page_copy+0x3a8/0x56c
>>>> [ 195.617723] [<801ce944>] do_swap_page+0x4cc/0x558
>>>> [ 195.622419] [<801cf3f8>] handle_mm_fault+0x790/0x93c
>>>> [ 195.627374] [<8011025c>] do_page_fault+0x19c/0x540
>>>> [ 195.632159] [<801142f0>] tlb_do_page_fault_1+0x10c/0x11c
>>>> [ 195.637465]
>>>> [ 195.638947] Code: 03e00008 00000000 24831000 <bc950000> bc950020
>>>> bc950040 bc950060 bc950080 bc9500a0
>>>> [ 195.648706]
>>>> [ 195.650243] ---[ end trace 7cc7d7f611932c42 ]---
>>>> [ 195.654857] Kernel panic - not syncing: Fatal exception
>>>> [ 195.660072] Rebooting in 10 seconds..
>>>>
>>>>
>>>> this problem can be triggered stably (by use Microsoft Remote Desktop client
>>>> to login to debian9 running on CU1830-Neo).
>>>>
>>> Could you print out the PTE value at 0x77eb8000 ?
>>
>> Here is the new log:
>>
>>
>> [ 33.681712] CPU 0 Unable to handle kernel paging request at virtual
>> address 77ea4000, epc == 801178ac, ra == 80118250
>> [ 33.692395] Oops[#1]:
>> [ 33.694662] CPU: 0 PID: 1389 Comm: Xsession Not tainted 5.12.0-rc8-dirty
>> #2
>> [ 33.701612] $ 0 : 00000000 00000001 801178a8 77ea5000
>> [ 33.706839] $ 4 : 77ea4000 81bcd220 80118130 856712a0
>> [ 33.712066] $ 8 : 833e4a80 8544b800 000070a8 8544b800
>> [ 33.717293] $12 : 00000002 000005b7 00000001 00000000
>> [ 33.722518] $16 : 81bcd220 77ea4000 80a11ad8 00000004
>> [ 33.727745] $20 : 77ea4000 81bcd220 856712a0 80860000
>> [ 33.732972] $24 : 0000001c 801178a8
>> [ 33.738197] $28 : 82564000 82565d68 00000000 80118250
>> [ 33.743424] Hi : 0000f0cc
>> [ 33.746293] Lo : 00007866
>> [ 33.749162] epc : 801178ac r4k_blast_dcache_page_dc32+0x4/0x9c
>> [ 33.755166] ra : 80118250 local_r4k_flush_cache_page+0x120/0x2c8
>> [ 33.761425] Status: 10001403 KERNEL EXL IE
>> [ 33.765605] Cause : 4080800c (ExcCode 03)
>> [ 33.769603] BadVA : 77ea4000
>> [ 33.772472] PrId : 00d00100 (Ingenic XBurst)
>> [ 33.776816] Modules linked in:
>> [ 33.779861] Process Xsession (pid: 1389, threadinfo=c8bdf64c,
>> task=2372d853, tls=77ea9690)
>> [ 33.788111] Stack : 808a256c 00000000 808a256c bfa6939a 8544b800 80860000
>> 8094d308 80a11ad8
>> [ 33.796474] 856712a0 80117fd8 8094d308 81bcd220 8544b800 801fdb10
>> 80945ce8 801180fc
>> [ 33.804838] 82565e80 80110b8c 80a11ad8 856712a0 856712a0 77ea4000
>> 00007866 bfa6939a
>> [ 33.813201] 82565e80 801cbe38 00000000 bfa6939a 80863494 801fa2c0
>> 856712a0 82562a90
>> [ 33.821564] 80860000 00000000 80a11ad8 bfa6939a 80a11ad8 82565e80
>> 00000000 80a11ad8
>> [ 33.829927] ...
>> [ 33.832367] Call Trace:
>> [ 33.834803] [<801178ac>] r4k_blast_dcache_page_dc32+0x4/0x9c
>> [ 33.840455] [<80118250>] local_r4k_flush_cache_page+0x120/0x2c8
>> [ 33.846367] [<80117fd8>] r4k_on_each_cpu.isra.10+0x24/0x58
>> [ 33.851845] [<801180fc>] r4k_flush_cache_page+0x34/0x58
>> [ 33.857062] [<801cbe38>] wp_page_copy+0x3a8/0x56c
>> [ 33.861763] [<801ceb74>] do_swap_page+0x4cc/0x558
>> [ 33.866458] [<801cf628>] handle_mm_fault+0x790/0x93c
>> [ 33.871414] [<8011026c>] do_page_fault+0x19c/0x540
>> [ 33.876199] [<80114300>] tlb_do_page_fault_1+0x10c/0x11c
>> [ 33.881506]
>> [ 33.882987] Index: 5 pgmask=4kb va=77ea2000 asid=fd
>> [ 33.882987] [pa=02a99000 c=3 d=1 v=1 g=0] [pa=0690d000 c=3 d=0 v=0 g=0]
>> [ 33.894635] Index: 6 pgmask=4kb va=77dc4000 asid=fd
>> [ 33.894635] [pa=01d30000 c=3 d=0 v=1 g=0] [pa=01d31000 c=3 d=0 v=1 g=0]
>> [ 33.906281] Index: 7 pgmask=4kb va=77dc0000 asid=fd
>> [ 33.906281] [pa=01d2c000 c=3 d=0 v=1 g=0] [pa=01d2d000 c=3 d=0 v=1 g=0]
>> [ 33.917928] Index: 8 pgmask=4kb va=77dc2000 asid=fd
>> [ 33.917928] [pa=01d2e000 c=3 d=0 v=1 g=0] [pa=01d2f000 c=3 d=0 v=1 g=0]
>> [ 33.929574] Index: 9 pgmask=4kb va=77dc6000 asid=fd
>> [ 33.929574] [pa=01d32000 c=3 d=0 v=1 g=0] [pa=01d33000 c=3 d=0 v=1 g=0]
>> [ 33.941220] Index: 10 pgmask=4kb va=77dc8000 asid=fd
>> [ 33.941220] [pa=01d34000 c=3 d=0 v=1 g=0] [pa=01d35000 c=3 d=0 v=1 g=0]
>> [ 33.952866] Index: 11 pgmask=4kb va=77dca000 asid=fd
>> [ 33.952866] [pa=01d36000 c=3 d=0 v=1 g=0] [pa=01d37000 c=3 d=0 v=1 g=0]
>> [ 33.964512] Index: 12 pgmask=4kb va=77dcc000 asid=fd
>> [ 33.964512] [pa=01d38000 c=3 d=0 v=1 g=0] [pa=01d39000 c=3 d=0 v=1 g=0]
>> [ 33.976159] Index: 13 pgmask=4kb va=77dce000 asid=fd
>> [ 33.976159] [pa=01d3a000 c=3 d=0 v=1 g=0] [pa=01d3b000 c=3 d=0 v=1 g=0]
>> [ 33.987805] Index: 14 pgmask=4kb va=77d82000 asid=fd
>> [ 33.987805] [pa=01dbd000 c=3 d=0 v=1 g=0] [pa=01dbe000 c=3 d=0 v=1 g=0]
>> [ 33.999451] Index: 15 pgmask=4kb va=77d80000 asid=fd
>> [ 33.999451] [pa=01dbb000 c=3 d=0 v=1 g=0] [pa=01dbc000 c=3 d=0 v=1 g=0]
>> [ 34.011097] Index: 16 pgmask=4kb va=77d84000 asid=fd
>> [ 34.011097] [pa=01dbf000 c=3 d=0 v=1 g=0] [pa=01dc0000 c=3 d=0 v=1 g=0]
>> [ 34.022743] Index: 17 pgmask=4kb va=77d86000 asid=fd
>> [ 34.022743] [pa=01dc1000 c=3 d=0 v=1 g=0] [pa=01dc2000 c=3 d=0 v=1 g=0]
>> [ 34.034389] Index: 18 pgmask=4kb va=77d88000 asid=fd
>> [ 34.034389] [pa=01dc3000 c=3 d=0 v=1 g=0] [pa=01dc4000 c=3 d=0 v=1 g=0]
>> [ 34.046035] Index: 19 pgmask=4kb va=77d8a000 asid=fd
>> [ 34.046035] [pa=01dc5000 c=3 d=0 v=1 g=0] [pa=01dc6000 c=3 d=0 v=1 g=0]
>> [ 34.057682] Index: 20 pgmask=4kb va=77d8c000 asid=fd
>> [ 34.057682] [pa=01dc7000 c=3 d=0 v=1 g=0] [pa=01dc8000 c=3 d=0 v=1 g=0]
>> [ 34.069328] Index: 21 pgmask=4kb va=77d8e000 asid=fd
>> [ 34.069328] [pa=01dc9000 c=3 d=0 v=1 g=0] [pa=01dca000 c=3 d=0 v=1 g=0]
>> [ 34.080975] Index: 22 pgmask=4kb va=7f7b0000 asid=fd
>> [ 34.080975] [pa=078ea000 c=3 d=0 v=1 g=0] [pa=07801000 c=3 d=0 v=0 g=0]
>> [ 34.092621] Index: 23 pgmask=4kb va=77e5a000 asid=fd
>> [ 34.092621] [pa=07ece000 c=3 d=0 v=1 g=0] [pa=077fb000 c=3 d=0 v=1 g=0]
>> [ 34.104267] Index: 24 pgmask=4kb va=77e5c000 asid=fd
>> [ 34.104267] [pa=0775f000 c=3 d=0 v=1 g=0] [pa=07314000 c=3 d=0 v=0 g=0]
>> [ 34.115913] Index: 25 pgmask=4kb va=77ea4000 asid=fd
>> [ 34.115913] [pa=18122000 c=0 d=0 v=0 g=0] [pa=00000000 c=0 d=0 v=0 g=0]
> C = 0, pa = 18122000, it is weird,
>
> +. pa is too high for 32bit SOC here;
>
> +. C=0 is not a valid cache attribute;
>
> I think this is "not" a PTE for memory, maybe a swap entry?
>
> Could you print the PTE value, not the value in TLB?
The following is the value of PTE.
There are 5 access operations from"pte = mk_pte(page,
vma->vm_page_prot)" to "set_pte_at(vma->vm_mm, vmf->address, vmf->pte,
pte)" in the "mm/memory.c" file.
They are named pte 1/pte 2/pte 3/pte 4/pte 5.
[ 37.433993] --- pte 1 = 07b02685
[ 37.437283] --- pte 3 = 07b02685
[ 37.441005] --- pte 1 = 07c0c685
[ 37.444241] --- pte 3 = 07c0c685
[ 37.453561] --- pte 1 = 07b05685
[ 37.456885] --- pte 3 = 07b05685
[ 37.460915] --- pte 1 = 07b8c685
[ 37.464157] --- pte 2 = 07b8c78f
[ 37.467449] --- pte 3 = 07b8c78f
[ 37.472461] --- pte 1 = 07aff685
[ 37.475694] --- pte 3 = 07aff685
[ 37.479970] --- pte 1 = 07b16685
[ 37.483205] --- pte 3 = 07b16685
[ 37.487443] --- pte 1 = 07c20685
[ 37.490679] --- pte 3 = 07c20685
[ 37.494043] --- pte 1 = 07bd9685
[ 37.497337] --- pte 3 = 07bd9685
[ 37.501678] --- pte 1 = 07c0e685
[ 37.504913] --- pte 3 = 07c0e685
[ 37.510009] --- pte 1 = 07c11685
[ 37.513242] --- pte 3 = 07c11685
[ 37.535431] --- pte 1 = 07afd685
[ 37.538721] --- pte 3 = 07afd685
[ 37.542363] --- pte 1 = 07c92685
[ 37.545599] --- pte 3 = 07c92685
[ 37.737458] --- pte 1 = 06853685
[ 37.740698] --- pte 3 = 06853685
[ 37.760229] --- pte 1 = 06853685
[ 37.763504] --- pte 3 = 06853685
[ 37.786619] --- pte 1 = 06853685
[ 37.789895] --- pte 3 = 06853685
[ 37.822622] --- pte 1 = 06853685
[ 37.825928] --- pte 3 = 06853685
[ 37.984660] --- pte 1 = 06853685
[ 37.987995] --- pte 3 = 06853685
[ 40.917495] --- pte 1 = 07b07685
[ 40.920753] --- pte 3 = 07b07685
[ 40.924017] --- pte 1 = 042c6685
[ 40.927306] --- pte 3 = 042c6685
[ 40.931823] --- pte 1 = 07c0d685
[ 40.935073] --- pte 3 = 07c0d685
[ 40.940130] --- pte 1 = 04976685
[ 40.943364] --- pte 3 = 04976685
[ 41.187955] --- pte 1 = 06cb7685
[ 41.191204] --- pte 3 = 06cb7685
[ 41.194841] --- pte 1 = 06d11685
[ 41.198147] --- pte 3 = 06d11685
[ 41.202959] --- pte 1 = 06c85685
[ 41.206287] --- pte 3 = 06c85685
[ 41.210331] --- pte 1 = 03965685
[ 41.213675] --- pte 3 = 03965685
[ 41.218629] --- pte 1 = 0396f685
[ 41.221886] --- pte 3 = 0396f685
[ 41.242299] --- pte 1 = 03fa9685
[ 41.245561] --- pte 3 = 03fa9685
[ 41.282717] --- pte 1 = 026fa685
[ 41.286029] --- pte 2 = 026fa78f
[ 41.289248] --- pte 3 = 026fa78f
[ 41.308755] --- pte 1 = 0767f685
[ 41.311993] --- pte 3 = 0767f685
[ 41.329631] --- pte 1 = 069c4685
[ 41.332925] --- pte 2 = 069c478f
[ 41.336201] --- pte 3 = 069c478f
[ 41.358331] --- pte 1 = 01e3f685
[ 41.361593] --- pte 2 = 01e3f78f
[ 41.364810] --- pte 3 = 01e3f78f
[ 41.371673] --- pte 1 = 03855685
[ 41.374952] --- pte 2 = 0385578f
[ 41.378221] --- pte 3 = 0385578f
[ 41.390334] --- pte 1 = 07781685
[ 41.393596] --- pte 2 = 0778178f
[ 41.396882] --- pte 3 = 0778178f
[ 41.411191] --- pte 1 = 07a41685
[ 41.414462] --- pte 3 = 07a41685
[ 42.328309] --- pte 1 = 06f1a685
[ 42.331544] --- pte 3 = 06f1a685
[ 42.334857] --- pte 1 = 075dc685
[ 42.338157] --- pte 3 = 075dc685
[ 42.343129] --- pte 1 = 076ae685
[ 42.346456] --- pte 3 = 076ae685
[ 42.356107] --- pte 1 = 076bd685
[ 42.359340] --- pte 3 = 076bd685
[ 47.550904] --- pte 1 = 01f15685
[ 47.554140] --- pte 3 = 01f15685
[ 47.559395] --- pte 1 = 07190685
[ 47.562631] --- pte 3 = 07190685
[ 47.567481] --- pte 1 = 07192685
[ 47.570717] --- pte 3 = 07192685
[ 47.578143] --- pte 1 = 0208a685
[ 47.581380] --- pte 3 = 0208a685
[ 47.586849] --- pte 1 = 02aa3685
[ 47.590085] --- pte 3 = 02aa3685
[ 47.594058] --- pte 1 = 02bb4685
[ 47.597358] --- pte 3 = 02bb4685
[ 47.601741] --- pte 1 = 02088685
[ 47.604993] --- pte 3 = 02088685
[ 47.626492] --- pte 1 = 02bb5685
[ 47.629749] --- pte 3 = 02bb5685
[ 47.648313] --- pte 1 = 02aa2685
[ 47.651551] --- pte 3 = 02aa2685
[ 47.683155] --- pte 1 = 01c93685
[ 47.686449] --- pte 3 = 01c93685
[ 48.409395] --- pte 1 = 07f02685
[ 48.412632] --- pte 3 = 07f02685
[ 49.639047] --- pte 1 = 05cd0685
[ 49.642283] --- pte 3 = 05cd0685
[ 49.756173] --- pte 1 = 043e7685
[ 49.759410] --- pte 3 = 043e7685
[ 49.775899] --- pte 1 = 02a22685
[ 49.779158] --- pte 3 = 02a22685
[ 49.801083] --- pte 1 = 018bc685
[ 49.804337] --- pte 3 = 018bc685
[ 49.826453] --- pte 1 = 01db1685
[ 49.829690] --- pte 3 = 01db1685
[ 49.848209] --- pte 1 = 07cb7685
[ 49.851446] --- pte 3 = 07cb7685
[ 49.865907] --- pte 1 = 02592685
[ 49.869172] --- pte 3 = 02592685
[ 49.880463] --- pte 1 = 0256c685
[ 49.883714] --- pte 3 = 0256c685
[ 50.019617] --- pte 1 = 03e30685
[ 50.022854] --- pte 3 = 03e30685
[ 50.027982] --- pte 1 = 07184685
[ 50.031218] --- pte 3 = 07184685
[ 50.034461] --- pte 1 = 07787685
[ 50.037732] --- pte 3 = 07787685
[ 50.056424] --- pte 1 = 01bf4685
[ 50.059660] --- pte 3 = 01bf4685
[ 50.075875] --- pte 1 = 01bf5685
[ 50.079111] --- pte 3 = 01bf5685
[ 50.082879] --- pte 1 = 07e37685
[ 50.086165] --- pte 3 = 07e37685
[ 50.096771] --- pte 1 = 0644c685
[ 50.100007] --- pte 3 = 0644c685
[ 50.103231] --- pte 1 = 07fa3685
[ 50.106523] --- pte 3 = 07fa3685
[ 50.126426] --- pte 1 = 04ca0685
[ 50.129672] --- pte 2 = 04ca078f
[ 50.132889] --- pte 3 = 04ca078f
[ 50.150463] --- pte 1 = 019cf685
[ 50.153699] --- pte 3 = 019cf685
[ 50.176439] --- pte 1 = 07a4e685
[ 50.179675] --- pte 3 = 07a4e685
[ 50.187700] --- pte 1 = 02b44685
[ 50.190966] --- pte 3 = 02b44685
[ 50.206031] --- pte 1 = 03620685
[ 50.209267] --- pte 3 = 03620685
[ 50.213061] --- pte 1 = 02275685
[ 50.216356] --- pte 3 = 02275685
[ 50.239359] --- pte 1 = 07765685
[ 50.242596] --- pte 3 = 07765685
[ 50.263367] --- pte 1 = 04221685
[ 50.266648] --- pte 3 = 04221685
[ 50.292287] irq/37-13450000: page allocation failure: order:0,
mode:0x40800(GFP_NOWAIT|__GFP_COMP), nodemask=(null)
[ 50.302738] CPU: 0 PID: 517 Comm: irq/37-13450000 Not tainted
5.12.0-rc8-dirty #6
[ 50.310207] Stack : 00040800 00000000 00000001 801565b8 00000000
00000007 00000000 635e192b
[ 50.318570] 80ea5bf4 80860000 807e9c80 80860000 80865923
00000001 80ea5b98 635e192b
[ 50.326933] 00000000 00000000 807e9c80 00000003 00000001
80ea5a6c 00000000 00000bd3
[ 50.335294] bff4ffd7 120b6cde 80ea5a64 302e3231 80860000
00000000 807e8508 00040800
[ 50.343657] 00000000 00000850 00040800 00000000 00000000
8042a10c 00000000 808e0000
[ 50.352018] ...
[ 50.354459] Call Trace:
[ 50.356895] [<80107db8>] show_stack+0x6c/0x12c
[ 50.361341] [<801e2f4c>] warn_alloc+0xa8/0x148
[ 50.365780] [<801e38e0>] __alloc_pages_nodemask+0x8d4/0x908
[ 50.371346] [<801f24ac>] ____cache_alloc+0x2dc/0x6a4
[ 50.376305] [<801f2a10>] kmem_cache_alloc+0x6c/0x104
[ 50.381263] [<803feac0>] jz4780_dma_desc_alloc.isra.9+0x40/0xa0
[ 50.387177] [<803fee90>] jz4780_dma_prep_slave_sg+0x54/0x184
[ 50.392828] [<804f72a8>] jz_mmc_irq_worker+0x2a8/0x760
[ 50.397958] [<80159e88>] irq_thread_fn+0x2c/0x6c
[ 50.402567] [<8015a4a0>] irq_thread+0x128/0x200
[ 50.407089] [<8013c0c8>] kthread+0x148/0x150
[ 50.411351] [<8010224c>] ret_from_kernel_thread+0x14/0x1c
[ 50.416742]
[ 50.418225] Index: 0 pgmask=4kb va=7709a000 asid=1a
[ 50.418225] [pa=02155000 c=3 d=0 v=0 g=0] [pa=02156000 c=3 d=0 v=1 g=0]
[ 50.429873] Index: 1 pgmask=4kb va=77072000 asid=1a
[ 50.429873] [pa=038d7000 c=3 d=0 v=0 g=0] [pa=07810000 c=3 d=0 v=1 g=0]
[ 50.441520] Index: 2 pgmask=4kb va=76e1a000 asid=1a
[ 50.441520] [pa=01f53000 c=3 d=0 v=0 g=0] [pa=01f54000 c=3 d=0 v=1 g=0]
[ 50.453167] Index: 3 pgmask=4kb va=770fe000 asid=1a
[ 50.453167] [pa=0208d000 c=3 d=0 v=0 g=0] [pa=0208e000 c=3 d=0 v=1 g=0]
[ 50.464814] Index: 4 pgmask=4kb va=566f8000 asid=1a
[ 50.464814] [pa=03a52000 c=3 d=0 v=0 g=0] [pa=03a53000 c=3 d=0 v=1 g=0]
[ 50.476461] Index: 5 pgmask=4kb va=7fece000 asid=1a
[ 50.476461] [pa=07ac3000 c=3 d=0 v=1 g=0] [pa=00000000 c=0 d=0 v=0 g=0]
[ 50.488108] Index: 6 pgmask=4kb va=566fe000 asid=1a
[ 50.488108] [pa=01bcf000 c=3 d=1 v=1 g=0] [pa=05eb1000 c=3 d=1 v=1 g=0]
[ 50.499755] Index: 7 pgmask=4kb va=77098000 asid=1a
[ 50.499755] [pa=05417000 c=3 d=0 v=1 g=0] [pa=02154000 c=3 d=0 v=1 g=0]
[ 50.511402] Index: 8 pgmask=4kb va=77e64000 asid=1a
[ 50.511402] [pa=05333000 c=3 d=0 v=1 g=0] [pa=04c85000 c=3 d=0 v=0 g=0]
[ 50.523049] Index: 9 pgmask=4kb va=76e6a000 asid=1a
[ 50.523049] [pa=021fe000 c=3 d=0 v=1 g=0] [pa=021ff000 c=3 d=0 v=1 g=0]
[ 50.534696] Index: 10 pgmask=4kb va=76f76000 asid=1a
[ 50.534696] [pa=0698f000 c=3 d=1 v=1 g=0] [pa=0697a000 c=3 d=1 v=1 g=0]
[ 50.546343] Index: 11 pgmask=4kb va=762d6000 asid=1a
[ 50.546343] [pa=06988000 c=3 d=1 v=1 g=0] [pa=00000000 c=0 d=0 v=0 g=0]
[ 50.557989] Index: 12 pgmask=4kb va=76f74000 asid=1a
[ 50.557989] [pa=0103d000 c=3 d=1 v=1 g=0] [pa=02b40000 c=3 d=0 v=1 g=0]
[ 50.569636] Index: 13 pgmask=4kb va=566e8000 asid=1a
[ 50.569636] [pa=05dd0000 c=3 d=1 v=1 g=0] [pa=053e6000 c=3 d=1 v=1 g=0]
[ 50.581283] Index: 14 pgmask=4kb va=566ac000 asid=1a
[ 50.581283] [pa=00000000 c=0 d=0 v=0 g=0] [pa=04b26000 c=3 d=1 v=1 g=0]
[ 50.592930] Index: 17 pgmask=4kb va=76eca000 asid=1a
[ 50.592930] [pa=02184000 c=3 d=0 v=1 g=0] [pa=02185000 c=3 d=0 v=0 g=0]
[ 50.604577] Index: 18 pgmask=4kb va=76f8c000 asid=1a
[ 50.604577] [pa=01da3000 c=3 d=0 v=1 g=0] [pa=01da4000 c=3 d=0 v=1 g=0]
[ 50.616224] Index: 19 pgmask=4kb va=76e9c000 asid=1a
[ 50.616224] [pa=02225000 c=3 d=0 v=0 g=0] [pa=02226000 c=3 d=0 v=1 g=0]
[ 50.627871] Index: 20 pgmask=4kb va=7fecc000 asid=1a
[ 50.627871] [pa=05b01000 c=3 d=1 v=1 g=0] [pa=05abe000 c=3 d=1 v=1 g=0]
[ 50.639518] Index: 21 pgmask=4kb va=76ef0000 asid=1a
[ 50.639518] [pa=021aa000 c=3 d=0 v=1 g=0] [pa=021ab000 c=3 d=0 v=1 g=0]
[ 50.651165] Index: 22 pgmask=4kb va=76e62000 asid=1a
[ 50.651165] [pa=021f6000 c=3 d=0 v=1 g=0] [pa=021f7000 c=3 d=0 v=1 g=0]
[ 50.662812] Index: 23 pgmask=4kb va=74a00000 asid=1a
[ 50.662812] [pa=03395000 c=3 d=1 v=1 g=0] [pa=028a0000 c=3 d=1 v=1 g=0]
[ 50.674459] Index: 24 pgmask=4kb va=75400000 asid=1a
[ 50.674459] [pa=05ec6000 c=3 d=1 v=1 g=0] [pa=00000000 c=0 d=0 v=0 g=0]
[ 50.686105] Index: 25 pgmask=4kb va=76ede000 asid=1a
[ 50.686105] [pa=02198000 c=3 d=0 v=0 g=0] [pa=02199000 c=3 d=0 v=1 g=0]
[ 50.697753] Index: 26 pgmask=4kb va=c009a000 asid=1a
[ 50.697753] [pa=00000000 c=0 d=0 v=0 g=1] [pa=02f90000 c=3 d=1 v=1 g=1]
[ 50.709399] Index: 27 pgmask=4kb va=c0086000 asid=1a
[ 50.709399] [pa=02f69000 c=3 d=1 v=1 g=1] [pa=02f6a000 c=3 d=1 v=1 g=1]
[ 50.721046] Index: 28 pgmask=4kb va=770f2000 asid=1a
[ 50.721046] [pa=06915000 c=3 d=0 v=1 g=0] [pa=06916000 c=3 d=0 v=1 g=0]
[ 50.732693] Index: 29 pgmask=4kb va=56700000 asid=1a
[ 50.732693] [pa=0357b000 c=3 d=1 v=1 g=0] [pa=07f9c000 c=3 d=1 v=1 g=0]
[ 50.744340] Index: 30 pgmask=4kb va=76f88000 asid=1a
[ 50.744340] [pa=01d9f000 c=3 d=0 v=1 g=0] [pa=01da0000 c=3 d=0 v=1 g=0]
[ 50.755987] Index: 31 pgmask=4kb va=76fa4000 asid=1a
[ 50.755987] [pa=03c3d000 c=3 d=0 v=1 g=0] [pa=00000000 c=0 d=0 v=0 g=0]
Thanks and best regards!
>
> tTLB value lost software PTE bits
>
>> [ 34.127559] Index: 26 pgmask=4kb va=c0096000 asid=fd
>> [ 34.127559] [pa=0302f000 c=3 d=1 v=1 g=1] [pa=03008000 c=3 d=1 v=1 g=1]
>> [ 34.139205]
>> [ 34.140686] Code: 03e00008 00000000 24831000 <bc950000> bc950020
>> bc950040 bc950060 bc950080 bc9500a0
>> [ 34.150445]
>> [ 34.151987] ---[ end trace 30089d2c358ff363 ]---
>> [ 34.156614] Kernel panic - not syncing: Fatal exception
>> [ 34.161831] Rebooting in 10 seconds..
>>
>>> I really have no idea of how the page_prot setting affecting the swap
>>> handling.
>>>
>>>> Thanks and best regards!
>>>>
>>>>
>>>>> Original Message
>>>>> From: 周琰杰 (Zhou Yanjie)
>>>>> Sent: 2021年4月16日星期五 16:48
>>>>> To: tsbogend@...ha.franken.de
>>>>> Cc: linux-mips@...r.kernel.org; linux-kernel@...r.kernel.org; akpm@...ux-foundation.org; paul.burton@...s.com; paul@...pouillou.net; siyanteng@...ngson.cn; huangpei@...ngson.cn; ira.weiny@...el.com; yangtiezhu@...ngson.cn; zhouyanjie@...yeetech.com; jun.jiang@...enic.com; dongsheng.qiu@...enic.com; aric.pzqi@...enic.com; rick.tyliu@...enic.com; sernia.zhou@...mail.com
>>>>> Subject: [PATCH] Revert "MIPS: make userspace mapping young by default".
>>>>>
>>>>> This reverts commit f685a533a7fab35c5d069dcd663f59c8e4171a75.
>>>>>
>>>>> It cause kernel panic on Ingenic X1830, so let's revert it.
>>>>>
>>>>> Signed-off-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@...yeetech.com>
>>>>> ---
>>>>> arch/mips/mm/cache.c | 31 ++++++++++++++-----------------
>>>>> 1 file changed, 14 insertions(+), 17 deletions(-)
>>>>>
>>>>> diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c
>>>>> index 7719d63..9cfd432 100644
>>>>> --- a/arch/mips/mm/cache.c
>>>>> +++ b/arch/mips/mm/cache.c
>>>>> @@ -21,7 +21,6 @@
>>>>> #include <asm/cpu.h>
>>>>> #include <asm/cpu-features.h>
>>>>> #include <asm/setup.h>
>>>>> -#include <asm/pgtable.h>
>>>>>
>>>>> /* Cache operations. */
>>>>> void (*flush_cache_all)(void);
>>>>> @@ -157,31 +156,29 @@ unsigned long _page_cachable_default;
>>>>> EXPORT_SYMBOL(_page_cachable_default);
>>>>>
>>>>> #define PM(p) __pgprot(_page_cachable_default | (p))
>>>>> -#define PVA(p) PM(_PAGE_VALID | _PAGE_ACCESSED | (p))
>>>>>
>>>>> static inline void setup_protection_map(void)
>>>>> {
>>>>> protection_map[0] = PM(_PAGE_PRESENT | _PAGE_NO_EXEC | _PAGE_NO_READ);
>>>>> - protection_map[1] = PVA(_PAGE_PRESENT | _PAGE_NO_EXEC);
>>>>> - protection_map[2] = PVA(_PAGE_PRESENT | _PAGE_NO_EXEC | _PAGE_NO_READ);
>>>>> - protection_map[3] = PVA(_PAGE_PRESENT | _PAGE_NO_EXEC);
>>>>> - protection_map[4] = PVA(_PAGE_PRESENT);
>>>>> - protection_map[5] = PVA(_PAGE_PRESENT);
>>>>> - protection_map[6] = PVA(_PAGE_PRESENT);
>>>>> - protection_map[7] = PVA(_PAGE_PRESENT);
>>>>> + protection_map[1] = PM(_PAGE_PRESENT | _PAGE_NO_EXEC);
>>>>> + protection_map[2] = PM(_PAGE_PRESENT | _PAGE_NO_EXEC | _PAGE_NO_READ);
>>>>> + protection_map[3] = PM(_PAGE_PRESENT | _PAGE_NO_EXEC);
>>>>> + protection_map[4] = PM(_PAGE_PRESENT);
>>>>> + protection_map[5] = PM(_PAGE_PRESENT);
>>>>> + protection_map[6] = PM(_PAGE_PRESENT);
>>>>> + protection_map[7] = PM(_PAGE_PRESENT);
>>>>>
>>>>> protection_map[8] = PM(_PAGE_PRESENT | _PAGE_NO_EXEC | _PAGE_NO_READ);
>>>>> - protection_map[9] = PVA(_PAGE_PRESENT | _PAGE_NO_EXEC);
>>>>> - protection_map[10] = PVA(_PAGE_PRESENT | _PAGE_NO_EXEC | _PAGE_WRITE |
>>>>> + protection_map[9] = PM(_PAGE_PRESENT | _PAGE_NO_EXEC);
>>>>> + protection_map[10] = PM(_PAGE_PRESENT | _PAGE_NO_EXEC | _PAGE_WRITE |
>>>>> _PAGE_NO_READ);
>>>>> - protection_map[11] = PVA(_PAGE_PRESENT | _PAGE_NO_EXEC | _PAGE_WRITE);
>>>>> - protection_map[12] = PVA(_PAGE_PRESENT);
>>>>> - protection_map[13] = PVA(_PAGE_PRESENT);
>>>>> - protection_map[14] = PVA(_PAGE_PRESENT);
>>>>> - protection_map[15] = PVA(_PAGE_PRESENT);
>>>>> + protection_map[11] = PM(_PAGE_PRESENT | _PAGE_NO_EXEC | _PAGE_WRITE);
>>>>> + protection_map[12] = PM(_PAGE_PRESENT);
>>>>> + protection_map[13] = PM(_PAGE_PRESENT);
>>>>> + protection_map[14] = PM(_PAGE_PRESENT | _PAGE_WRITE);
>>>>> + protection_map[15] = PM(_PAGE_PRESENT | _PAGE_WRITE);
>>>>> }
>>>>>
>>>>> -#undef _PVA
>>>>> #undef PM
>>>>>
>>>>> void cpu_cache_init(void)
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