Am Dienstag, 24. Mai 2022, 01:00:39 CEST schrieb Guenter Roeck: > On Tue, May 24, 2022 at 12:40:06AM +0200, Heiko Stübner wrote: > > Hi Guenter, > > > > Am Montag, 23. Mai 2022, 18:18:47 CEST schrieb Guenter Roeck: > > > On 5/23/22 08:18, Guo Ren wrote: > > > > I tested Palmer's branch, it's okay: > > > > 8810d7feee5a (HEAD -> for-next, palmer/for-next) riscv: Don't output a > > > > bogus mmu-type on a no MMU kernel > > > > > > > > I also tested linux-next, it's okay: > > > > > > > > rv64_rootfs: > > > > # uname -a > > > > Linux buildroot 5.18.0-next-20220523 #7 SMP Mon May 23 11:15:17 EDT > > > > 2022 riscv64 GNU/Linux > > > > # > > > > > > That is is ok with one setup doesn't mean it is ok with > > > all setups. It is not ok with my root file system (from > > > https://github.com/groeck/linux-build-test/tree/master/rootfs/riscv64), > > > with qemu v6.2. > > > > That is very true that it shouldn't fail on any existing (qemu-)platform, > > but as I remember also testing Guo's series on both riscv32 and riscv64 > > qemu platforms in the past, I guess it would be really helpful to get more > > information about the failing platform you're experiencing so that we can > > find the source of the issue. > > > > As it looks like you both tested the same kernel source, I guess the only > > differences could be in the qemu-version, kernel config and rootfs. > > Is your rootfs something you can share or that can be rebuilt easily? > > > I provided a link to my root file system above. The link points to two > root file systems, for initrd (cpio archive) and for ext2. > I also mentioned above that I used qemu v6.2. And below I said > > > My root file system uses musl. > > I attached the buildroot configuration below. The buildroot version, > if I remember correctly, was 2021.02. > > Kernel configuration is basically defconfig. However, I do see one > detail that is possibly special in my configuration. > > # The latest kernel assumes SBI version 0.3, but that doesn't match qemu > # at least up to version 6.2 and results in hangup/crashes during reboot > # with sifive_u emulations. > enable_config "${defconfig}" CONFIG_RISCV_SBI_V01 > > Hope that helps, Actually it doesn't seem rootfs-specific at all. Merged was this v9, but the version I last tested was one of the earlier ones, so it looks like something really broke meanwhile. I tested both linux-next-20220524 and palmer's for-next on a very recent qemu - master from april if I remember correctly together with a Debian-based rootfs mounted as nfsroot inside qemu. With CONFIG_COMPAT=y (aka using defconfig directly) I get: [ 12.957612] VFS: Mounted root (nfs filesystem) on device 0:15. [ 12.967260] devtmpfs: mounted [ 13.101186] Freeing unused kernel image (initmem) memory: 2168K [ 13.110914] Run /sbin/init as init process [ 13.343810] Unable to handle kernel paging request at virtual address ff60007265776f78 [ 13.347271] Oops [#1] [ 13.347749] Modules linked in: [ 13.348689] CPU: 0 PID: 1 Comm: init Not tainted 5.18.0-next-20220524 #1 [ 13.349864] Hardware name: riscv-virtio,qemu (DT) [ 13.350706] epc : special_mapping_fault+0x4c/0x8e [ 13.351639] ra : __do_fault+0x28/0x11c [ 13.352311] epc : ffffffff801210e6 ra : ffffffff8011712a sp : ff2000000060bd10 [ 13.353276] gp : ffffffff810df030 tp : ff600000012a8000 t0 : ffffffff80008acc [ 13.354063] t1 : ffffffff80c001d8 t2 : ffffffff80c00258 s0 : ff2000000060bd20 [ 13.354886] s1 : ff2000000060bd68 a0 : ff600000013165f0 a1 : ff60000001ec2450 [ 13.355675] a2 : ff2000000060bd68 a3 : 0000000000000000 a4 : ff6000003f0337c8 [ 13.356822] a5 : ff60007265776f70 a6 : ff60000001ec2450 a7 : 0000000000000007 [ 13.357689] s2 : ff60000001ec2450 s3 : ff60000001ec2450 s4 : ff2000000060bd68 [ 13.358487] s5 : ff60000001ec2450 s6 : 0000000000000254 s7 : 000000000000000c [ 13.359305] s8 : 000000000000000f s9 : 000000000000000d s10: ff60000001e4c080 [ 13.360102] s11: 000000000000000d t3 : 00ffffffbbeab000 t4 : 000000006ffffdff [ 13.361557] t5 : 000000006ffffe35 t6 : 000000000000000a [ 13.362229] status: 0000000200000120 badaddr: ff60007265776f78 cause: 000000000000000d [ 13.363504] [<ffffffff8011712a>] __do_fault+0x28/0x11c [ 13.364464] [<ffffffff8011b346>] __handle_mm_fault+0x71c/0x9ea [ 13.365577] [<ffffffff8011b696>] handle_mm_fault+0x82/0x136 [ 13.366275] [<ffffffff80008bec>] do_page_fault+0x120/0x31c [ 13.366906] [<ffffffff800032f4>] ret_from_exception+0x0/0xc [ 13.368763] ---[ end trace 0000000000000000 ]--- [ 13.368763] ---[ end trace 0000000000000000 ]--- [ 13.369598] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b [ 13.369933] SMP: stopping secondary CPUs Turning CONFIG_COMPAT off, results in the system booting normally again. Heiko > --- > BR2_riscv=y > BR2_TOOLCHAIN_BUILDROOT_MUSL=y > BR2_KERNEL_HEADERS_4_19=y > BR2_BINUTILS_VERSION_2_32_X=y > BR2_TARGET_RUN_TESTSCRIPT=y > BR2_SHUTDOWN_COMMAND_POWEROFF=y > BR2_SYSTEM_DHCP="eth0" > BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y > BR2_PACKAGE_STRACE=y > BR2_PACKAGE_I2C_TOOLS=y > BR2_PACKAGE_PCIUTILS=y > BR2_PACKAGE_DTC=y > BR2_PACKAGE_DTC_PROGRAMS=y > BR2_PACKAGE_IPROUTE2=y > BR2_TARGET_ROOTFS_BTRFS=y > BR2_TARGET_ROOTFS_CPIO=y > BR2_TARGET_ROOTFS_CPIO_GZIP=y > BR2_TARGET_ROOTFS_EXT2=y > BR2_TARGET_ROOTFS_EXT2_SIZE="16M" > BR2_TARGET_ROOTFS_EXT2_GZIP=y > BR2_TARGET_ROOTFS_ISO_GZIP=y > BR2_TARGET_ROOTFS_SQUASHFS=y > # BR2_TARGET_ROOTFS_TAR is not set > >
