While running libhugetlbfs fallocate_stress.sh on stable-rc 5.4 branch kernel on arm64 hikey device. The following kernel Internal error: Oops: crash dump noticed. fallocate_stress.sh (2M: 64): [ 129.706506] Unable to handle kernel paging request at virtual address ffff00006772f000 [ 129.714638] Mem abort info: [ 129.717553] ESR = 0x96000047 [ 129.720726] EC = 0x25: DABT (current EL), IL = 32 bits [ 129.726188] SET = 0, FnV = 0 [ 129.729338] EA = 0, S1PTW = 0 [ 129.732573] Data abort info: [ 129.735546] ISV = 0, ISS = 0x00000047 [ 129.739493] CM = 0, WnR = 1 [ 129.742534] swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000000013ad000 [ 129.749409] [ffff00006772f000] pgd=0000000077ff7003, pud=0000000077e0d003, pmd=0000000077cd1003, pte=006800006772f713 [ 129.760294] Internal error: Oops: 96000047 [#1] PREEMPT SMP [ 129.765988] Modules linked in: wl18xx wlcore mac80211 cfg80211 hci_uart snd_soc_audio_graph_card adv7511 crct10dif_ce wlcore_sdio btbcm snd_soc_simple_card_utils cec kirin_drm bluetooth drm_kms_helper dw_drm_dsi rfkill drm fuse [ 129.786626] CPU: 1 PID: 1263 Comm: fallocate_stres Not tainted 5.4.41-rc1-00091-g132220af41e6 #1 [ 129.795601] Hardware name: HiKey Development Board (DT) [ 129.800940] pstate: 80000005 (Nzcv daif -PAN -UAO) [ 129.805847] pc : clear_page+0x10/0x24 [ 129.809594] lr : __cpu_clear_user_page+0xc/0x18 [ 129.814225] sp : ffff800012a1bbe0 [ 129.817609] x29: ffff800012a1bbe0 x28: fffffe00017d8000 [ 129.823039] x27: ffff000073070268 x26: ffff800011adf000 [ 129.828466] x25: ffff800011ae06c8 x24: 0000000000001000 [ 129.833893] x23: 0000000000000000 x22: fffffe00017d8000 [ 129.839320] x21: 0000000000000000 x20: 0000000006a00000 [ 129.844747] x19: ffff000037945400 x18: 0000000000000000 [ 129.850174] x17: 0000000000000000 x16: 0000000000000000 [ 129.855602] x15: 0000000000000000 x14: 0000000000000000 [ 129.861031] x13: 0000000000000000 x12: 0000000000000000 [ 129.866458] x11: 0000000000000000 x10: ffff800012a1bbd0 [ 129.871886] x9 : 0000000000000200 x8 : 0ffff00000010000 [ 129.877314] x7 : 0000000000000000 x6 : 0000000000000080 [ 129.882741] x5 : 0000000000000036 x4 : 0000020000200000 [ 129.888170] x3 : 0000000000004bc0 x2 : 0000000000000004 [ 129.893597] x1 : 0000000000000040 x0 : ffff00006772f000 [ 129.899025] Call trace: [ 129.901530] clear_page+0x10/0x24 [ 129.904926] clear_subpage+0x54/0x90 [ 129.908580] clear_huge_page+0x6c/0x208 [ 129.912503] hugetlbfs_fallocate+0x2e0/0x4a0 [ 129.916869] vfs_fallocate+0x1b8/0x2e0 [ 129.920699] ksys_fallocate+0x44/0x90 [ 129.924446] __arm64_sys_fallocate+0x1c/0x28 [ 129.928811] el0_svc_common.constprop.0+0x68/0x160 [ 129.933708] el0_svc_handler+0x20/0x80 [ 129.937539] el0_svc+0x8/0xc [ 129.940488] Code: d53b00e1 12000c21 d2800082 9ac12041 (d50b7420) [ 129.946719] ---[ end trace df98e92a449be749 ]--- [ 129.959274] note: fallocate_stres[1263] exited with preempt_count 1 ref: https://qa-reports.linaro.org/lkft/linux-stable-rc-5.4-oe/build/v5.4.40-91-g132220af41e6/testrun/1428986/log https://qa-reports.linaro.org/lkft/linux-stable-rc-5.4-oe/build/v5.4.40-91-g132220af41e6/testrun/1428986/ kernel config: https://builds.tuxbuild.com/SqvcoklXmvQsC70j6rfcgA/kernel.config -- Linaro LKFT https://lkft.linaro.org
