On Sun, May 31, 2015 at 7:13 PM, Toralf Förster <toralf.foers...@gmx.de> wrote: > I don't get it in moment, at a 64 bit Gentoo Linux (host is Linux t44 > 4.0.4-hardened-r3) I get : > > > $ /home/tfoerste/devel/linux/linux earlyprintk ubda=t44uml > ubdb=/mnt/ramdisk/t44uml_swap > eth0=tuntap,tap0,72:ef:3d:b6:67:0c,192.168.1.254 mem=2000M con0=fd:0,fd:1 > con=pts umid=uml_t44uml softlockup_all_cpu_backtrace=1 > Core dump limits : > soft - 0 > hard - NONE > Checking that ptrace can change system call numbers...OK > Checking syscall emulation patch for ptrace...OK > Checking advanced syscall emulation patch for ptrace...OK > Checking environment variables for a tempdir...none found > Checking if /dev/shm is on tmpfs...OK > Checking PROT_EXEC mmap in /dev/shm...OK > bootconsole [earlycon0] enabled > PID hash table entries: 4096 (order: 3, 32768 bytes) > Dentry cache hash table entries: 262144 (order: 9, 2097152 bytes) > Inode-cache hash table entries: 131072 (order: 8, 1048576 bytes) > Memory: 2009296K/2048000K available (3008K kernel code, 673K rwdata, 892K > rodata, 113K init, 173K bss, 38704K reserved, 0K cma-reserved) > NR_IRQS:15 > clocksource itimer: mask: 0xffffffffffffffff max_cycles: 0x1d854df40, > max_idle_ns: 3526361616960 ns > Calibrating delay loop... 5746.68 BogoMIPS (lpj=28733440) > pid_max: default: 32768 minimum: 301 > Mount-cache hash table entries: 4096 (order: 3, 32768 bytes) > Mountpoint-cache hash table entries: 4096 (order: 3, 32768 bytes) > Initializing cgroup subsys blkio > Initializing cgroup subsys devices > Initializing cgroup subsys freezer > Checking that host ptys support output SIGIO...Yes > Checking that host ptys support SIGIO on close...No, enabling workaround > devtmpfs: initialized > Using 2.6 host AIO > clocksource jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: > 19112604462750000 ns > xor: measuring software checksum speed > 8regs : 20528.400 MB/sec > 8regs_prefetch: 17211.600 MB/sec > 32regs : 19893.600 MB/sec > 32regs_prefetch: 16321.600 MB/sec > xor: using function: 8regs (20528.400 MB/sec) > NET: Registered protocol family 16 > raid6: int64x1 gen() 3012 MB/s > raid6: int64x1 xor() 1664 MB/s > raid6: int64x2 gen() 3137 MB/s > raid6: int64x2 xor() 2110 MB/s > raid6: int64x4 gen() 2882 MB/s > raid6: int64x4 xor() 1801 MB/s > raid6: int64x8 gen() 2464 MB/s > raid6: int64x8 xor() 1423 MB/s > raid6: using algorithm int64x2 gen() 3137 MB/s > raid6: .... xor() 2110 MB/s, rmw enabled > raid6: using intx1 recovery algorithm > Switched to clocksource itimer > NET: Registered protocol family 2 > TCP established hash table entries: 16384 (order: 5, 131072 bytes) > TCP bind hash table entries: 16384 (order: 5, 131072 bytes) > TCP: Hash tables configured (established 16384 bind 16384) > UDP hash table entries: 1024 (order: 3, 32768 bytes) > UDP-Lite hash table entries: 1024 (order: 3, 32768 bytes) > NET: Registered protocol family 1 > console [stderr0] disabled > mconsole (version 2) initialized on /home/tfoerste/.uml/uml_t44uml/mconsole > Checking host MADV_REMOVE support...OK > futex hash table entries: 256 (order: 0, 6144 bytes) > VFS: Disk quotas dquot_6.6.0 > VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes) > io scheduler noop registered > io scheduler deadline registered (default) > NET: Registered protocol family 17 > Initialized stdio console driver > Console initialized on /dev/tty0 > console [tty0] enabled > console [tty0] enabled > bootconsole [earlycon0] disabled > bootconsole [earlycon0] disabled > Initializing software serial port version 1 > console [mc-1] enabled > Failed to initialize ubd device 1 :Couldn't determine size of device's file > Netdevice 0 (72:ef:3d:b6:67:0c) : > TUN/TAP backend - IP = 192.168.1.254 > Btrfs loaded > BTRFS: device fsid 3342a6f8-d944-44df-bffb-f64ac9f0bdc8 devid 1 transid 51 > /dev/root > BTRFS info (device ubda): disk space caching is enabled > BTRFS: has skinny extents > VFS: Mounted root (btrfs filesystem) readonly on device 0:13. > devtmpfs: mounted > > Modules linked in: > Pid: 1, comm: swapper Not tainted 4.1.0-rc5-00161-gaaa20fc > RIP: 0033:[<00000000602a150d>] > RSP: 0000032dff262ef8 EFLAGS: 00010212 > RAX: 00000000602a14f9 RBX: 0000000060706da8 RCX: 0000032dfeb94f19 > RDX: 0000000060286650 RSI: 0000032dff263fe8 RDI: 00000000dcede000 > RBP: 0000032dff263fe8 R08: 0000000000000000 R09: 0000000000000000 > R10: 00000000dc81fbd0 R11: 0000000000000246 R12: 00000000dcede000 > R13: 0000032dff263000 R14: 0000000060286b60 R15: 00000000603277f8 > Kernel panic - not syncing: Segfault with no mm > CPU: 0 PID: 1 Comm: swapper Not tainted 4.1.0-rc5-00161-gaaa20fc #2 > Stack: > > Modules linked in: > Pid: 1, comm: swapper Not tainted 4.1.0-rc5-00161-gaaa20fc > RIP: 0033:[<00000000602898cc>] > RSP: 0000000060665450 EFLAGS: 00010202 > RAX: 0000000000000006 RBX: 000000006057088f RCX: 0000000060706da8 > RDX: 0000000000000000 RSI: 0000000060715af8 RDI: 0000000000000000 > RBP: 0000000060665480 R08: 0000000060665059 R09: 00000000602cf270 > R10: 0000000000000008 R11: 00000000004685dd R12: 0000000000000001 > R13: 0000032dff262eff R14: 00000000606656f0 R15: 0000000000000001 > Kernel panic - not syncing: Segfault with no mm > > > $ addr2line -e ~/devel/linux/linux 00000000602a150d > /home/tfoerste/devel/linux/arch/um/os-Linux/skas/process.c:180 > > $ addr2line -e ~/devel/linux/linux 00000000602898cc > /home/tfoerste/devel/linux/arch/um/kernel/sysrq.c:52 > > > > > The /etc/fstab of the 64 bit Gentoo Linux UML guest is : > > /dev/ubda / btrfs noatime 0 1 > /dev/ubdb none swap sw 0 0 > > shm /dev/shm tmpfs nodev,nosuid,noexec > 0 0 > > > > What do I miss ?
Dunno. :) btrfs works definitely on UML. Does the issue also happen without hardened stuff? -- Thanks, //richard ------------------------------------------------------------------------------ _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
