> > > > - UML doesn't boot: guest is 2.6.24-mm1 also, haven't tried any > > > > other. Same guest boots fine on 2.6.24 host. > > > > > > What does it do? > > > > See below. > > This bug seems to have made it to mainline as well, starting with > -rc1. Any ideas? Should I start bisecting?
Bisected it down to good e7b5e11eaaa8ef93a34e68016de51152d0d62911 bad bde6f5f59c2b2b48a7a849c129d5b48838fe77ee I strongly suspect it's one of the ptrace cleanup patches. Roland, could you please have a look? I'm running 32bit UML on 64bit host, this may have to do with triggering this, otherwise perhaps more people would have complained. Thanks, Miklos > > GNU gdb 6.6.50.20070726-cvs > > Copyright (C) 2007 Free Software Foundation, Inc. > > GDB is free software, covered by the GNU General Public License, and you are > > welcome to change it and/or distribute copies of it under certain > > conditions. > > Type "show copying" to see the conditions. > > There is absolutely no warranty for GDB. Type "show warranty" for details. > > This GDB was configured as "x86_64-suse-linux"... > > Using host libthread_db library "/lib64/libthread_db.so.1". > > (gdb) r umid=uml > > Starting program: /store/quilt/linux/linux umid=uml > > Core dump limits : > > soft - 0 > > hard - NONE > > Checking that ptrace can change system call numbers...OK > > Checking syscall emulation patch for ptrace...missing > > Checking for tmpfs mount on /dev/shm...nothing mounted on /dev/shm > > Checking PROT_EXEC mmap in /tmp/...OK > > Checking for the skas3 patch in the host: > > - /proc/mm...not found: No such file or directory > > - PTRACE_FAULTINFO...not found: Invalid argument > > - PTRACE_LDT...not found: Invalid argument > > UML running in SKAS0 mode > > Adding 24977408 bytes to physical memory to account for exec-shield gap > > [ 0.000000] Linux version 2.6.24-mm1 ([EMAIL PROTECTED]) (gcc version > > 4.2.1 (SUSE Linux)) #26 Fri Feb 15 11:05:54 CET 2008 > > [ 0.010000] Built 1 zonelists in Zone order, mobility grouping on. > > Total pages: 14179 > > [ 0.010000] Kernel command line: root=98:0 > > [ 0.010000] PID hash table entries: 256 (order: 8, 1024 bytes) > > [ 0.010000] Dentry cache hash table entries: 8192 (order: 3, 32768 bytes) > > [ 0.010000] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes) > > [ 0.010000] Memory: 29504k available > > [ 0.270000] Mount-cache hash table entries: 512 > > [ 0.270000] Checking for host processor cmov support...Yes > > [ 0.270000] Checking that host ptys support output SIGIO...Yes > > [ 0.270000] Checking that host ptys support SIGIO on close...No, > > enabling workaround > > [ 0.270000] net_namespace: 184 bytes > > [ 0.270000] Using 2.6 host AIO > > [ 0.270000] NET: Registered protocol family 16 > > [ 0.300000] NET: Registered protocol family 2 > > [ 0.310000] Time: itimer clocksource has been installed. > > [ 0.390000] IP route cache hash table entries: 1024 (order: 0, 4096 > > bytes) > > [ 0.390000] TCP established hash table entries: 2048 (order: 2, 16384 > > bytes) > > [ 0.390000] TCP bind hash table entries: 2048 (order: 3, 40960 bytes) > > [ 0.390000] TCP: Hash tables configured (established 2048 bind 2048) > > [ 0.390000] TCP reno registered > > [ 0.420000] Checking host MADV_REMOVE support...<3>MADV_REMOVE failed, > > err = -38 > > [ 0.420000] Can't release memory to the host - memory hotplug won't be > > supported > > [ 0.420000] mconsole (version 2) initialized on > > /home/mszeredi/.uml/uml/mconsole > > [ 0.420000] Host TLS support detected > > [ 0.420000] Detected host type: x86_64 (GDT indexes 12 to 15) > > [ 0.420000] fuse init (API version 7.9) > > [ 0.420000] io scheduler noop registered (default) > > [ 0.420000] loop: module loaded > > [ 0.420000] TCP cubic registered > > [ 0.420000] NET: Registered protocol family 1 > > [ 0.420000] Initialized stdio console driver > > [ 0.420000] Console initialized on /dev/tty0 > > [ 0.420000] console [tty0] enabled > > [ 0.420000] console [mc-1] enabled > > [ 0.420000] ubda: unknown partition table > > [ 0.420000] kjournald starting. Commit interval 5 seconds > > [ 0.420000] EXT3-fs: mounted filesystem with ordered data mode. > > [ 0.420000] VFS: Mounted root (ext3 filesystem) readonly. > > [ 0.420000] Failed to get registers from stub, errno = 3 > > [ 0.420000] wait_stub_done : failed to wait for SIGTRAP, pid = 30073, n > > = 30073, errno = 0, status = 0x0 > > [New LWP 30070] > > [New LWP 30071] > > [New LWP 30072] > > > > Program received signal SIGTERM, Terminated. > > 0xffffe430 in __kernel_vsyscall () > > (gdb) bt > > #0 0xffffe430 in __kernel_vsyscall () > > #1 0xf7eabc26 in kill () from /lib/libc.so.6 > > #2 0x0806cf82 in os_dump_core () at arch/um/os-Linux/util.c:105 > > #3 0x0805d64d in fatal_sigsegv () at arch/um/kernel/trap.c:141 > > #4 0x0806e32b in wait_stub_done (pid=30073) > > at arch/um/os-Linux/skas/process.c:94 > > #5 0x0806d94b in run_syscall_stub (mm_idp=0xb26ff18, syscall=123, > > args=0xb067e08, expected=0, addr=0xb067ea4, done=1) > > at arch/um/os-Linux/skas/mem.c:86 > > #6 0x0806f997 in write_ldt_entry (mm_idp=0xb26ff18, func=1, desc=0xb067e94, > > addr=0xb067ea4, done=1) at arch/um/sys-i386/ldt.c:72 > > #7 0x08070434 in init_new_ldt (new_mm=0xb26ff18, from_mm=0x0) > > at arch/um/sys-i386/ldt.c:425 > > #8 0x0805de43 in init_new_context (task=0xb05bc00, mm=0xb26fdc0) > > at arch/um/kernel/skas/mmu.c:87 > > #9 0x080ce3c1 in bprm_mm_init (bprm=0xb1a6980) at fs/exec.c:337 > > #10 0x080cfa2d in do_execve (filename=0x820d61f "/sbin/init", > > argv=0x8250020, > > envp=0x8250240, regs=0xb05be04) at fs/exec.c:1296 > > #11 0x080599e8 in execve1 (file=0x820d61f "/sbin/init", argv=0x8250020, > > env=0x8250240) at arch/um/kernel/exec.c:62 > > #12 0x08059a4f in um_execve (file=0x820d61f "/sbin/init", argv=0x8250020, > > env=0x8250240) at arch/um/kernel/exec.c:78 > > #13 0x0805c4fb in kernel_execve (filename=0x820d61f "/sbin/init", > > ---Type <return> to continue, or q <return> to quit--- > > argv=0x8250020, envp=0x8250240) at arch/um/kernel/syscall.c:146 > > #14 0x08059616 in run_init_process (init_filename=0x820d61f "/sbin/init") > > at init/main.c:763 > > #15 0x080596d3 in init_post () at init/main.c:809 > > #16 0x08049a74 in kernel_init (unused=0x0) at init/main.c:865 > > #17 0x0806ac31 in run_kernel_thread (fn=0x8049a00 <kernel_init>, arg=0x0, > > jmp_ptr=0xb05be70) at arch/um/os-Linux/process.c:267 > > #18 0x0805ad62 in new_thread_handler () at arch/um/kernel/process.c:153 > > #19 0x00000000 in ?? () > > (gdb) > > > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
