On Tue, 2017-03-21 at 15:59 -0700, Adam Williamson wrote: > On Tue, 2017-03-21 at 20:48 +0000, Richard W.M. Jones wrote: > > On Tue, Mar 21, 2017 at 12:58:06PM -0700, Adam Williamson wrote: > > > On Tue, 2017-03-21 at 19:40 +0000, Richard W.M. Jones wrote: > > > > https://bugzilla.redhat.com/show_bug.cgi?id=1430297 > > > > > > > > This has been going on for a few weeks with no attention. It prevents > > > > anyone from running libguestfs on Fedora 26. > > > > > > > > It's (IMHO) pretty serious for anyone using virtualization: "kernel > > > > doesn't boot on qemu" should be a blocker for a Fedora release. > > > > > > > > Can anyone see what's going on? > > > > > > The earlier case looks like > > > https://bugzilla.redhat.com/show_bug.cgi?id=1430043 , which was fixed > > > in rc2. I'm not sure about the latter case, though Thorsten Leemhuis > > > reported intermittent crash / hang during boot with rc2 as: > > > > > > https://bugzilla.kernel.org/show_bug.cgi?id=194911 > > > > > > Since rc2 I've seen occasional failures which are probably the same as > > > the ones Thorsten was seeing, but usually it works OK. I run 26-on-26 > > > VMs via virt-manager quite a lot, they certainly don't fail every time. > > > > Does libguestfs-test-tool work for you in F26? > > Hum, interesting results: ... > If I run it as root with LIBGUESTFS_BACKEND=direct , it hits the same > kernel trace you hit. Well, first time it did that. Second time, I got this, and the boot hung: [ 0.937752] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem [ 0.938362] general protection fault: 0000 [#1] SMP [ 0.938719] Modules linked in: kvm_intel kvm snd_pcsp snd_pcm ppdev irqbypass ghash_clmulni_intel snd_timer snd parport_pc ata_generic soundcore joydev pata_acpi parport i2c_piix4 serio_raw qemu_fw_cfg acpi_cpufreq tpm_tis tpm_tis_core tpm libcrc32c crc8 crc7 crc_itu_t virtio_pci virtio_mmio virtio_input virtio_balloon virtio_scsi nd_pmem nd_btt virtio_net virtio_crypto crypto_engine virtio_console virtio_rng virtio_blk virtio_ring virtio nfit crc32_generic crct10dif_pclmul crc32c_intel crc32_pclmul [ 0.939350] CPU: 0 PID: 457 Comm: mount Not tainted 4.11.0-0.rc2.git2.2.fc26.x86_64 #1 [ 0.939350] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1.fc26 04/01/2014 [ 0.939350] task: ffff94981d290000 task.stack: ffffae8780374000 [ 0.939350] RIP: 0010:__kmalloc+0xa4/0x210 [ 0.939350] RSP: 0018:ffffae8780377c30 EFLAGS: 00010246 [ 0.939350] RAX: 2d326f6974726976 RBX: 00000000014000c0 RCX: 000000000000000a [ 0.939350] RDX: 0000000000000015 RSI: 0000000000000000 RDI: 000000000001cae0 [ 0.939350] RBP: ffffae8780377c60 R08: ffff94981f01cae0 R09: ffff94981ec02280 [ 0.939350] R10: 00000000000005ac R11: ffff94981b640400 R12: 2d326f6974726976 [ 0.939350] R13: 00000000014000c0 R14: 0000000000002000 R15: ffff94981ec02280 [ 0.939350] FS: 00007fe249b47480(0000) GS:ffff94981f000000(0000) knlGS:0000000000000000 [ 0.939350] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 0.939350] CR2: 000055ac86a6ac08 CR3: 000000001d329000 CR4: 00000000000406f0 [ 0.939350] Call Trace: [ 0.939350] ? mb_cache_create+0x75/0x110 [ 0.939350] mb_cache_create+0x75/0x110 [ 0.939350] ext4_xattr_create_cache+0x13/0x20 [ 0.939350] ext4_fill_super+0x1cad/0x3600 [ 0.939350] ? __kmalloc+0x1d1/0x210 [ 0.939350] ? snprintf+0x49/0x60 [ 0.939350] mount_bdev+0x17c/0x1b0 [ 0.939350] ? ext4_calculate_overhead+0x490/0x490 [ 0.939350] ext4_mount+0x15/0x20 [ 0.939350] mount_fs+0x32/0x160 [ 0.939350] ? __alloc_percpu+0x15/0x20 [ 0.939350] vfs_kern_mount.part.19+0x5d/0x120 [ 0.939350] do_mount+0x520/0xc30 [ 0.939350] ? _copy_from_user+0x4e/0x80 [ 0.939350] ? memdup_user+0x4f/0x80 [ 0.939350] SyS_mount+0x98/0xe0 [ 0.939350] entry_SYSCALL_64_fastpath+0x1a/0xa9 [ 0.939350] RIP: 0033:0x7fe248bcc4fa [ 0.939350] RSP: 002b:00007ffef410b938 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 0.939350] RAX: ffffffffffffffda RBX: 00007fe249741522 RCX: 00007fe248bcc4fa [ 0.939350] RDX: 000055ac86a69c80 RSI: 000055ac86a62f50 RDI: 000055ac86a60240 [ 0.939350] RBP: 00007fe249951184 R08: 0000000000000000 R09: 00007ffef410a838 [ 0.939350] R10: 00000000c0ed0000 R11: 0000000000000246 R12: 000055ac86a60120 [ 0.939350] R13: 00007ffef410bc48 R14: 0000000000000000 R15: 00000000ffffffff [ 0.939350] Code: 49 83 78 10 00 4d 8b 20 0f 84 03 01 00 00 4d 85 e4 0f 84 fa 00 00 00 49 63 41 20 49 8b 39 4c 01 e0 40 f6 c7 0f 0f 85 5f 01 00 00 <48> 8b 18 48 8d 4a 01 4c 89 e0 65 48 0f c7 0f 0f 94 c0 84 c0 74 [ 0.939350] RIP: __kmalloc+0xa4/0x210 RSP: ffffae8780377c30 [ 0.958773] ---[ end trace 900f41ab5fa73f40 ]--- guestfsd: error: /dev/sda1 on / (options: ''): guestfsd: main_loop: proc 1 (mount) took 0.02 seconds libguestfs: error: mount: /dev/sda1 on / (options: ''): libguestfs: closing guestfs handle 0x5653569ae490 (state 2) guestfsd: main_loop: new request, len 0x28 umount-all: /proc/mounts: fsname=/dev/root dir=/ type=ext2 opts=rw,noatime,block_validity,barrier,user_xattr,acl freq=0 passno=0 umount-all: /proc/mounts: fsname=/proc dir=/proc type=proc opts=rw,relatime freq=0 passno=0 umount-all: /proc/mounts: fsname=/sys dir=/sys type=sysfs opts=rw,relatime freq=0 passno=0 umount-all: /proc/mounts: fsname=tmpfs dir=/run type=tmpfs opts=rw,nosuid,relatime,size=97320k,mode=755 freq=0 passno=0 umount-all: /proc/mounts: fsname=/dev dir=/dev type=devtmpfs opts=rw,relatime,size=240912k,nr_inodes=60228,mode=755 freq=0 passno=0 umount-all: /proc/mounts: fsname=/dev/pts dir=/dev/pts type=devpts opts=rw,relatime,mode=600,ptmxmode=000 freq=0 passno=0 [ 1.120063] tsc: Refined TSC clocksource calibration: 3502.622 MHz [ 1.120580] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x327cfdbd6b4, max_idle_ns: 440795243113 ns Third, fourth and fifth tries I got the virtcons_probe trace again. -- Adam Williamson Fedora QA Community Monkey IRC: adamw | Twitter: AdamW_Fedora | XMPP: adamw AT happyassassin . net http://www.happyassassin.net _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx
