Following kernel warning noticed while running kselftest arm64 sve-ptrace on qemu-arm64 on ampere-altra server. Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx> /usr/bin/qemu-system-aarch64 -cpu max,pauth-impdef=on \ -machine virt-2.10 \ -nographic \ -net nic,model=virtio,macaddr=BA:DD:AD:FC:09:12 \ -net tap -m 4096 -monitor none \ -kernel Image.gz --append "console=ttyAMA0 root=/dev/vda rw" -hda lkft-kselftest-image-juno-20221114150409.rootfs.ext4 -smp 4 -nographic Boot log: --------- [ 0.000000] Linux version 6.0.9-rc1 (tuxmake@tuxmake) (aarch64-linux-gnu-gcc (Debian 11.3.0-6) 11.3.0, GNU ld (GNU Binutils for Debian) 2.39) #1 SMP PREEMPT @1668438377 [ 0.000000] random: crng init done [ 0.000000] Machine model: linux,dummy-virt # selftests: arm64: sve-ptrace # ok 680 # SKIP SVE set FPSIMD get SVE for VL 2704 # ok 681 Set SVE VL 2720 [ 422.607034] ------------[ cut here ]------------ [ 422.615382] WARNING: CPU: 0 PID: 1111 at arch/arm64/kernel/fpsimd.c:464 fpsimd_save+0x170/0x1b0 [ 422.617588] Modules linked in: cfg80211 bluetooth rfkill crct10dif_ce sm3_ce sm3 sha3_ce sha512_ce sha512_arm64 fuse drm [ 422.619758] CPU: 0 PID: 1111 Comm: sve-ptrace Not tainted 6.0.9-rc1 #1 [ 422.620402] Hardware name: linux,dummy-virt (DT) [ 422.620958] pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 422.621614] pc : fpsimd_save+0x170/0x1b0 [ 422.621988] lr : fpsimd_save+0xd8/0x1b0 [ 422.622307] sp : ffff800008f3bb00 [ 422.622612] x29: ffff800008f3bb00 x28: ffffae14dd664bc0 x27: 0000000000000001 [ 422.623519] x26: ffff0000ff773858 x25: 0000000000000000 x24: ffff0000c0994fa8 [ 422.624102] x23: 0000000000000001 x22: 0000000000000100 x21: ffff0000ff75f0b0 [ 422.624706] x20: ffff51ec22a8b000 x19: ffffae14dccd40b0 x18: 0000000000000000 [ 422.625292] x17: ffff51ec22a8b000 x16: 0000000000000000 x15: 0000000000000000 [ 422.626041] x14: 0000000000000003 x13: 0000000000000000 x12: 0000000000000002 [ 422.626647] x11: ffffae14ddbee840 x10: 0000000000000312 x9 : ffffae14da818210 [ 422.627326] x8 : ffff0000c09935c0 x7 : ffffae14de2b8d08 x6 : 0000000000000000 [ 422.627889] x5 : 000000c91075a4a8 x4 : 0000000000000000 x3 : 0000000000000001 [ 422.628487] x2 : ffff51ec22a8b000 x1 : 0000000000000204 x0 : 0000000000000010 [ 422.629203] Call trace: [ 422.629579] fpsimd_save+0x170/0x1b0 [ 422.630014] fpsimd_thread_switch+0x2c/0xc4 [ 422.630431] __switch_to+0x20/0x160 [ 422.630745] __schedule+0x380/0xb90 [ 422.631038] preempt_schedule_irq+0x4c/0x130 [ 422.631386] el1_interrupt+0x4c/0x64 [ 422.631689] el1h_64_irq_handler+0x18/0x24 [ 422.632037] el1h_64_irq+0x64/0x68 [ 422.632335] do_page_fault+0x31c/0x4d0 [ 422.632660] do_translation_fault+0xd8/0x100 [ 422.632993] do_mem_abort+0x58/0xb0 [ 422.633311] el0_ia+0x8c/0x134 [ 422.633685] el0t_64_sync_handler+0x134/0x140 [ 422.634061] el0t_64_sync+0x18c/0x190 [ 422.634580] irq event stamp: 654 [ 422.634923] hardirqs last enabled at (653): [<ffffae14dbeafc94>] exit_to_kernel_mode+0x34/0x130 [ 422.635713] hardirqs last disabled at (654): [<ffffae14dbeb7700>] __schedule+0x3f0/0xb90 [ 422.636309] softirqs last enabled at (650): [<ffffae14da810be4>] __do_softirq+0x514/0x62c [ 422.636877] softirqs last disabled at (637): [<ffffae14da8b4f58>] __irq_exit_rcu+0x164/0x19c [ 422.637446] ---[ end trace 0000000000000000 ]--- Full test log: https://lkft.validation.linaro.org/scheduler/job/5847349#L2206 https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.0.y/build/v6.0.8-191-gf8896c3ebbcf/testrun/13007451/suite/log-parser-test/test/check-kernel-exception/log https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.0.y/build/v6.0.8-191-gf8896c3ebbcf/testrun/13007451/suite/log-parser-test/test/check-kernel-exception/details/ metadata: git_ref: linux-6.0.y git_repo: https://gitlab.com/Linaro/lkft/mirrors/stable/linux-stable-rc git_sha: f8896c3ebbcfcc053d9c27413bea3af94c01fd71 git_describe: v6.0.8-191-gf8896c3ebbcf kernel_version: 6.0.9-rc1 kernel-config: https://builds.tuxbuild.com/2HXisCgbMlQAU85bS1QC4TvzydK/config build-url: https://gitlab.com/Linaro/lkft/mirrors/stable/linux-stable-rc/-/pipelines/694074125 artifact-location: https://builds.tuxbuild.com/2HXisCgbMlQAU85bS1QC4TvzydK toolchain: gcc-11 -- Linaro LKFT https://lkft.linaro.org
