Hi, UML user here. I'm able to reproduce a similar crash 100% of the time with a 3.7 UML kernel if I configure my UML consoles some specific way. I don't remember all the details of it. I think what's going on here is that UML gets a signal it can't handle when you resize. Not attaching to a pts (or anything else that generates those signals, a serial port or a socket should be ok) should fix it. It is still quite annoying, though.
HTH, Pierluigi On Mon, Mar 4, 2013 at 2:18 PM, Toralf Förster <toralf.foers...@gmx.de> wrote: > The following is reproduce able at my system -a ny hints ? : > > $ /home/tfoerste/workspace/bin/start_uml.sh -r > /home/tfoerste/virtual/uml/n22stab4 > Cannot get wake-on-lan settings: Operation not permitted > Locating the bottom of the address space ... 0x1000 > Locating the top of the address space ... 0xc0000000 > Core dump limits : > soft - NONE > 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 for tmpfs mount on /dev/shm...OK > Checking PROT_EXEC mmap in /dev/shm/...OK > Checking for the skas3 patch in the host: > - /proc/mm...not found: No such file or directory > - PTRACE_FAULTINFO...not found > - PTRACE_LDT...not found > UML running in SKAS0 mode > Adding 3014656 bytes to physical memory to account for exec-shield gap > bootconsole [earlycon0] enabled > PID hash table entries: 4096 (order: 2, 16384 bytes) > Dentry cache hash table entries: 131072 (order: 7, 524288 bytes) > Inode-cache hash table entries: 65536 (order: 6, 262144 bytes) > Memory: 768448k available > SLUB: Genslabs=15, HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 > NR_IRQS:15 > Calibrating delay loop... 6447.10 BogoMIPS (lpj=32235520) > pid_max: default: 32768 minimum: 301 > Mount-cache hash table entries: 512 > Checking for host processor cmov support...Yes > 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 > NET: Registered protocol family 16 > bio: create slab <bio-0> at 0 > Switching to clocksource itimer > NET: Registered protocol family 2 > TCP established hash table entries: 8192 (order: 4, 65536 bytes) > TCP bind hash table entries: 8192 (order: 3, 32768 bytes) > TCP: Hash tables configured (established 8192 bind 8192) > TCP: reno registered > UDP hash table entries: 512 (order: 1, 8192 bytes) > UDP-Lite hash table entries: 512 (order: 1, 8192 bytes) > NET: Registered protocol family 1 > RPC: Registered named UNIX socket transport module. > RPC: Registered udp transport module. > RPC: Registered tcp transport module. > RPC: Registered tcp NFSv4.1 backchannel transport module. > mconsole (version 2) initialized on /home/tfoerste/.uml/uml/mconsole > Checking host MADV_REMOVE support...OK > UML Audio Relay (host dsp = /dev/sound/dsp, host mixer = /dev/sound/mixer) > Host TLS support detected > Detected host type: i386 (GDT indexes 6 to 9) > audit: initializing netlink socket (disabled) > type=2000 audit(1362435381.156:1): initialized > NFS: Registering the id_resolver key type > Key type id_resolver registered > Key type id_legacy registered > nfs4filelayout_init: NFSv4 File Layout Driver Registering... > Installing knfsd (copyright (C) 1996 o...@monad.swb.de). > msgmni has been set to 1500 > alg: No test for stdrng (krng) > Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254) > io scheduler noop registered (default) > tun: Universal TUN/TAP device driver, 1.6 > tun: (C) 1999-2004 Max Krasnyansky <m...@qualcomm.com> > device-mapper: uevent: version 1.0.3 > device-mapper: ioctl: 4.23.1-ioctl (2012-12-18) initialised: > dm-de...@redhat.com > TCP: cubic registered > NET: Registered protocol family 17 > Key type dns_resolver registered > Initialized stdio console driver > Console initialized on /dev/tty0 > console [tty0] enabled, bootconsole disabled > console [tty0] enabled, bootconsole disabled > Initializing software serial port > version 1 > console [mc-1] enabled > ubda: unknown partition table > ubdb: unknown partition table > Netdevice 0 (72:ef:3d:fd:4a:0b) : > TUN/TAP backend - > EXT3-fs (ubda): error: couldn't mount because of unsupported optional > features (240) > EXT2-fs (ubda): error: couldn't mount because of unsupported optional > features (244) > EXT4-fs (ubda): INFO: recovery required on readonly filesystem > EXT4-fs (ubda): write access will be enabled during recovery > EXT4-fs (ubda): orphan cleanup on readonly fs > EXT4-fs (ubda): 5 orphan inodes deleted > EXT4-fs (ubda): recovery complete > EXT4-fs (ubda): mounted filesystem with ordered data mode. Opts: (null) > VFS: Mounted root (ext4 filesystem) readonly on device 98:0. > devtmpfs: mounted > INIT: version 2.88 booting > > OpenRC 0.11.8 is starting up Gentoo Linux (i686) [UML] > > * Mounting /proc ... > [ ok ] > * Mounting /run ... > * /run/openrc: creating directory > * /run/lock: creating directory > * /run/lock: correcting owner > > EIP: 0073:[<00000000>] CPU: 0 Not tainted ESP: 007b:0840b800 EFLAGS: 00010246 > Not tainted > EAX: 00000000 EBX: 08416788 ECX: 08416788 EDX: 0840d3c0 > ESI: 0840bb0c EDI: 0840bba0 EBP: 0840b80c DS: 007b ES: 007b > 0840af4c: [<0807957f>] show_regs+0x10f/0x120 > 0840af68: [<08062163>] segv+0x293/0x2b0 > 0840b018: [<080621f3>] segv_handler+0x73/0x80 > 0840b040: [<08071ab8>] sig_handler_common+0xb8/0xe0 > 0840b2c4: [<08071bfd>] sig_handler+0x3d/0x50 > 0840b2d4: [<0807174b>] hard_handler+0x6b/0xa0 > 0840b2fc: [<b77b140c>] 0xb77b140c > 0840b810: [<080c8408>] generic_handle_irq+0x28/0x30 > 0840b820: [<0805ee55>] do_IRQ+0x25/0x40 > 0840b830: [<080623c9>] winch+0x19/0x20 > 0840b840: [<08071ab8>] sig_handler_common+0xb8/0xe0 > 0840bac4: [<08071bfd>] sig_handler+0x3d/0x50 > 0840bad4: [<0807174b>] hard_handler+0x6b/0xa0 > 0840bafc: [<b77b140c>] 0xb77b140c > > Kernel panic - not syncing: Kernel mode fault at addr 0x0, ip 0x0 > 0840af28: [<0833ea18>] dump_stack+0x22/0x24 > 0840af40: [<0833ea94>] panic+0x7a/0x18b > 0840af68: [<0806217a>] segv+0x2aa/0x2b0 > 0840b018: [<080621f3>] segv_handler+0x73/0x80 > 0840b040: [<08071ab8>] sig_handler_common+0xb8/0xe0 > 0840b2c4: [<08071bfd>] sig_handler+0x3d/0x50 > 0840b2d4: [<0807174b>] hard_handler+0x6b/0xa0 > 0840b2fc: [<b77b140c>] 0xb77b140c > 0840b810: [<080c8408>] generic_handle_irq+0x28/0x30 > 0840b820: [<0805ee55>] do_IRQ+0x25/0x40 > 0840b830: [<080623c9>] winch+0x19/0x20 > 0840b840: [<08071ab8>] sig_handler_common+0xb8/0xe0 > 0840bac4: [<08071bfd>] sig_handler+0x3d/0x50 > 0840bad4: [<0807174b>] hard_handler+0x6b/0xa0 > 0840bafc: [<b77b140c>] 0xb77b140c > > > EIP: 0073:[<40001282>] CPU: 0 Not tainted ESP: 007b:bfd428fc EFLAGS: 00010206 > Not tainted > EAX: 00000000 EBX: 01200011 ECX: 00000000 EDX: 00000000 > ESI: 00000000 EDI: 40261be8 EBP: bfd42978 DS: 007b ES: 007b > 0840aedc: [<0807957f>] show_regs+0x10f/0x120 > 0840aef8: [<0806255c>] panic_exit+0x2c/0x50 > 0840af08: [<0809e1f8>] notifier_call_chain+0x38/0x60 > 0840af30: [<0809e343>] atomic_notifier_call_chain+0x23/0x30 > 0840af40: [<0833eabc>] panic+0xa2/0x18b > 0840af68: [<0806217a>] segv+0x2aa/0x2b0 > 0840b018: [<080621f3>] segv_handler+0x73/0x80 > 0840b040: [<08071ab8>] sig_handler_common+0xb8/0xe0 > 0840b2c4: [<08071bfd>] sig_handler+0x3d/0x50 > 0840b2d4: [<0807174b>] hard_handler+0x6b/0xa0 > 0840b2fc: [<b77b140c>] 0xb77b140c > 0840b810: [<080c8408>] generic_handle_irq+0x28/0x30 > 0840b820: [<0805ee55>] do_IRQ+0x25/0x40 > 0840b830: [<080623c9>] winch+0x19/0x20 > 0840b840: [<08071ab8>] sig_handler_common+0xb8/0xe0 > 0840bac4: [<08071bfd>] sig_handler+0x3d/0x50 > 0840bad4: [<0807174b>] hard_handler+0x6b/0xa0 > 0840bafc: [<b77b140c>] 0xb77b140c > > Terminated > > -- > MfG/Sincerely > Toralf Förster > pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3 > > ------------------------------------------------------------------------------ > Everyone hates slow websites. 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