Hi, Thomas, On Wed, Dec 8, 2021 at 8:59 AM Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx> wrote: > > Hi, > > [ 11.647401] CPU 3 Unable to handle kernel paging request at virtual address 0000000558005801, epc == ffffffff80232838, ra == ffffffff802327ac > [ 11.660049] Oops[#1]: > [ 11.662303] CPU: 3 PID: 348 Comm: libvirtd Not tainted 5.16.0-rc3+ #140 > [ 11.668877] Hardware name: Lemote LEMOTE-LS3A4000-7A1000-1w-V0.1-pc/LEMOTE-LS3A4000-7A1000-1w-V01-pc, BIOS Kunlun-A1901-V4.1.4 04/20/2020 > [ 11.681153] $ 0 : 0000000000000000 000000007400cce0 000000000000033f 0000000558001811 > [ 11.689119] $ 4 : 0000000000800000 0000000558005801 0000000000000000 980000013507c000 > [ 11.697081] $ 8 : 0000000000000078 0000000000800000 ffffffffffffffff 9800000004714210 > [ 11.705043] $12 : 9800000134fe7cb8 ffffffffffffff7f 9800000004714200 0000000000000040 > [ 11.713005] $16 : 980000014ebbcfc0 000000007400cce1 000000ffabffc000 ffffffff81258700 > [ 11.720966] $20 : 980000012137f464 980000012137f400 980000013507fea8 980000047cc60000 > [ 11.728928] $24 : 0000000000000003 000000ffa3c08fa0 > [ 11.736890] $28 : 9800000134fe4000 9800000134fe7c90 980000012137f468 ffffffff802327ac > [ 11.744853] Hi : 00000000000001c8 > [ 11.748399] Lo : ffffffffc6da0e44 > [ 11.751947] epc : ffffffff80232838 __update_tlb+0xf0/0x258 > [ 11.757578] ra : ffffffff802327ac __update_tlb+0x64/0x258 > [ 11.763202] Status: 7400cce2 KX SX UX KERNEL EXL > [ 11.767883] Cause : 10000008 (ExcCode 02) > [ 11.771862] BadVA : 0000000558005801 > [ 11.775408] PrId : 0014c001 (ICT Loongson-3) > [ 11.779733] Modules linked in: > [ 11.782764] Process libvirtd (pid: 348, threadinfo=00000000a73c3d49, task=00000000728cbb42, tls=000000fff0ced7d0) > [ 11.792968] Stack : 980000047cbed700 980000014ebbcfc0 000000ffaa000000 9800000134fe7d40 > [ 11.800933] 0000000558001811 ffffffff804a26f8 0000000000000000 584fe00ab628d7e1 > [ 11.808894] 0000000000000207 980000013507fea8 ffffffff814f4000 980000014ebbcfc0 > [ 11.816856] ffffffff81260000 0000000000000254 000000007400cce1 0000000000000001 > [ 11.824818] ffffffff813f6860 ffffffff8044e260 000000aaadae8000 980000012137f400 > [ 11.832779] 000000000000000b 0000000000100077 980000014ebbcfc0 0000000000000cc0 > [ 11.840742] 0000000003feafff 000000ffabffc000 0000000000000254 980000013507fea8 > [ 11.848704] 98000001350f0078 0000000000000000 0000000000000000 0000000000000000 > [ 11.856667] 0000000000000000 980000012137f464 0000000000000000 584fe00ab628d7e1 > [ 11.864629] 9800000134fe7e08 980000014ebbcfc0 0000000000000254 000000ffabffc030 > [ 11.872590] ... > [ 11.875017] Call Trace: > [ 11.877440] [<ffffffff80232838>] __update_tlb+0xf0/0x258 > [ 11.882722] [<ffffffff804a26f8>] do_huge_pmd_anonymous_page+0x3c8/0x808 > [ 11.889300] [<ffffffff8044e260>] __handle_mm_fault+0xbc0/0xf38 > [ 11.895099] [<ffffffff8044e7ec>] handle_mm_fault+0x214/0x2c8 > [ 11.900722] [<ffffffff80f24638>] do_page_fault+0x218/0x6a0 > [ 11.906176] [<ffffffff8022ae64>] tlb_do_page_fault_0+0x114/0x11c > [ 11.912149] > [ 11.913622] Code: 0067182d dc630000 00a3282d <dca30000> 10800006 00033a3a 2408ffff 00031e3c 000847bc > [ 11.923325] > [ 11.924837] ---[ end trace bc99cfb1af49f825 ]--- > [ 11.929428] note: libvirtd[348] exited with preempt_count 1 > > is this a known issue ? If I disabled TRANSPARENT_HUGE_PAGE system > works. Have you tried some older kernels, such as 5.10/5.15? I have seen that some MM-related patches be merged in MIPS tree in recent releases, and maybe this bug is caused by them. Huacai > > Thomas. > > -- > Crap can work. Given enough thrust pigs will fly, but it's not necessarily a > good idea. [ RFC1925, 2.3 ]
