Hello ppl! I'm using sucessfully several uml's for 2 years now.
I recently upgraded kernels from linux.2.6.11.10-bs5 to linux-2.6.17.7 and 2.6.17.7-hmd1.smp.p4_skas3_v9_pre9 for the host machine (hmd = homemade). I have randomly the problem, that the uml machines hangs on boot at "VFS: Mounted root (ext3 filesystem) readonly." TLS probs? No. I removed /lib/tls I double checked if /dev is complete. If I kill the uml and simply retry 2 or 3 times, it boots fine. But they usually do not survive a reboot (sometimes they do). They segfault or hang at "mount root". While hanging I tried also a 'sysrq b' via console but this gives me a "BUG: warning at kernel/irq/manage.c:276/free_irq()". As the host is a smp machine, this smells like a race condition? I tried the same image and kernel combos on another machine, and there is no problem ... I attach console output and strace hoping that helps to narrow down the cause. tia chris -- Christoph Rudorff MKI - Institut für Medien, Kommunikation und Informationstechnologie Fachhochschule Düsseldorf Josef Gockeln Str. 9 Raum H 13 40474 Düsseldorf (+49) 211-4351-884 [EMAIL PROTECTED] http://mki.fh-duesseldorf.de I straced the pids: #2 ENOACCESS #3 Process 14182 attached - interrupt to quit io_getevents(0xb7f4a000, 0x1, 0x1, 0xa105cfb4, 0 #4 Process 14183 attached - interrupt to quit read(6, #5 Process 14184 attached - interrupt to quit poll( They are waiting. Here is pid #1 while eating 100% cpu in an endless loop: #1 munmap(0xbfefb000, 4096) = 0 munmap(0xbfefc000, 4096) = 0 munmap(0xbfefd000, 4096) = 0 munmap(0xbfefe000, 4096) = 0 munmap(0xbfeff000, 4096) = 0 sigreturn() = ? (mask now []) --- SIGSEGV (Segmentation fault) @ 0 (0) --- rt_sigprocmask(SIG_UNBLOCK, [SEGV], [USR1 SEGV ALRM VTALRM WINCH IO], 8) = 0 rt_sigprocmask(SIG_UNBLOCK, [USR1], [USR1 ALRM VTALRM WINCH IO], 8) = 0 munmap(0xb0800000, 4096) = 0 mmap2(0xb0800000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x1146) = 0xb0800000 munmap(0xb0801000, 4096) = 0 mmap2(0xb0801000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x1147) = 0xb0801000 munmap(0xb0802000, 4096) = 0 mmap2(0xb0802000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x1148) = 0xb0802000 munmap(0xb0803000, 4096) = 0 mmap2(0xb0803000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x1149) = 0xb0803000 munmap(0xb0804000, 4096) = 0 mmap2(0xb0804000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x114a) = 0xb0804000 munmap(0xb0805000, 4096) = 0 mmap2(0xb0805000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x114b) = 0xb0805000 munmap(0xb0806000, 4096) = 0 mmap2(0xb0806000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x114c) = 0xb0806000 munmap(0xb0807000, 4096) = 0 mmap2(0xb0807000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x114d) = 0xb0807000 munmap(0xb0808000, 4096) = 0 mmap2(0xb0808000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x114e) = 0xb0808000 munmap(0xb0809000, 4096) = 0 mmap2(0xb0809000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x114f) = 0xb0809000 munmap(0xb080a000, 4096) = 0 mmap2(0xb080a000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x1150) = 0xb080a000 munmap(0xb080b000, 4096) = 0 mmap2(0xb080b000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x1151) = 0xb080b000 munmap(0xb080c000, 4096) = 0 munmap(0xb080d000, 4096) = 0 mmap2(0xb080d000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x1153) = 0xb080d000 munmap(0xb080e000, 4096) = 0 mmap2(0xb080e000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x1154) = 0xb080e000 munmap(0xb080f000, 4096) = 0 mmap2(0xb080f000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x1155) = 0xb080f000 munmap(0xb0810000, 4096) = 0 mmap2(0xb0810000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x1156) = 0xb0810000 munmap(0xb0811000, 4096) = 0 mmap2(0xb0811000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x1157) = 0xb0811000 munmap(0xb0812000, 4096) = 0 mmap2(0xb0812000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x1158) = 0xb0812000 munmap(0xb0813000, 4096) = 0 mmap2(0xb0813000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x1159) = 0xb0813000 munmap(0xb0814000, 4096) = 0 mmap2(0xb0814000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x115a) = 0xb0814000 munmap(0xb0815000, 4096) = 0 mmap2(0xb0815000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x115b) = 0xb0815000 munmap(0xb0816000, 4096) = 0 mmap2(0xb0816000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x115c) = 0xb0816000 munmap(0xb0817000, 4096) = 0 mmap2(0xb0817000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x115d) = 0xb0817000 munmap(0xb0818000, 4096) = 0 mmap2(0xb0818000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x115e) = 0xb0818000 munmap(0xb0819000, 4096) = 0 munmap(0xb081a000, 4096) = 0 mmap2(0xb081a000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x582) = 0xb081a000 munmap(0xb081b000, 4096) = 0 mmap2(0xb081b000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x583) = 0xb081b000 munmap(0xb081c000, 4096) = 0 mmap2(0xb081c000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x584) = 0xb081c000 munmap(0xb081d000, 4096) = 0 mmap2(0xb081d000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 4, 0x585) = 0xb081d000 munmap(0xb081e000, 4096) = 0 munmap(0xb081f000, 4096) = 0 munmap(0xb0820000, 4096) = 0 munmap(0xb0821000, 4096) = 0 munmap(0xb0822000, 4096) = 0 munmap(0xb0823000, 4096) = 0 munmap(0xb0824000, 4096) = 0 munmap(0xb0825000, 4096) = 0 munmap(0xb0826000, 4096) = 0 [...] munmap(0xbfefc000, 4096) = 0 munmap(0xbfefd000, 4096) = 0 munmap(0xbfefe000, 4096) = 0 munmap(0xbfeff000, 4096) = 0 sigreturn() = ? (mask now []) --- SIGVTALRM (Virtual timer expired) @ 0 (0) --- Process 14172 detached ... and it starts over ... Here I tried to reboot the uml: [42949415.600000] Restarting system. 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 /home/users/chris/tmp/...OK Checking for the skas3 patch in the host: - /proc/mm...found but disabled on command line - PTRACE_FAULTINFO...found - PTRACE_LDT...found UML running in SKAS0 mode Kernel virtual memory size shrunk to 258998272 bytes Checking that ptrace can change system call numbers...OK Checking syscall emulation patch for ptrace...OK Checking advanced syscall emulation patch for ptrace...OK Segmentation fault Mh, e2fsck -f root.img, and start over: 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 /home/users/chris/tmp/...OK Checking for the skas3 patch in the host: - /proc/mm...found - PTRACE_FAULTINFO...found - PTRACE_LDT...found UML running in SKAS3 mode Kernel virtual memory size shrunk to 254803968 bytes Checking that ptrace can change system call numbers...OK Checking syscall emulation patch for ptrace...OK Checking advanced syscall emulation patch for ptrace...OK [42949372.960000] Linux version 2.6.17.7 ([EMAIL PROTECTED]) (gcc version 3.4.3 (Mandrakelinux 10.2 3.4.3-7mdk)) #2 Mon Jul 31 16:50:59 CEST 2006 [42949372.960000] Built 1 zonelists [42949372.960000] Kernel command line: con0=fd:0,fd:1 con=pts mem=256M ubd0=c.root.img eth0=tuntap,,,<my IP> root=98:0 [42949372.960000] PID hash table entries: 2048 (order: 11, 8192 bytes) [42949372.960000] Dentry cache hash table entries: 32768 (order: 5, 131072 bytes) [42949372.960000] Inode-cache hash table entries: 16384 (order: 4, 65536 bytes) [42949372.960000] Memory: 252672k available [42949373.200000] Mount-cache hash table entries: 512 [42949373.210000] Checking for host processor cmov support...Yes [42949373.210000] Checking for host processor xmm support...No [42949373.210000] Checking that host ptys support output SIGIO...Yes [42949373.210000] Checking that host ptys support SIGIO on close...No, enabling workaround [42949373.210000] Using 2.6 host AIO [42949373.210000] NET: Registered protocol family 16 [42949373.210000] NET: Registered protocol family 2 [42949373.330000] IP route cache hash table entries: 2048 (order: 1, 8192 bytes) [42949373.330000] TCP established hash table entries: 8192 (order: 3, 32768 bytes) [42949373.330000] TCP bind hash table entries: 4096 (order: 2, 16384 bytes) [42949373.330000] TCP: Hash tables configured (established 8192 bind 4096) [42949373.330000] TCP reno registered [42949373.330000] Checking host MADV_REMOVE support...MADV_REMOVE failed, err = -38 [42949373.330000] Can't release memory to the host - memory hotplug won't be supported [42949373.330000] mconsole (version 2) initialized on /home/users/chris/.uml/gucki/mconsole [42949373.330000] UML Watchdog Timer [42949373.330000] Netdevice 0 : TUN/TAP backend - IP = <my IP> [42949373.330000] Host TLS support detected [42949373.330000] Detected host type: i386 [42949373.330000] VFS: Disk quotas dquot_6.5.1 [42949373.330000] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) [42949373.330000] Installing knfsd (copyright (C) 1996 [EMAIL PROTECTED]). [42949373.330000] fuse init (API version 7.6) [42949373.330000] Initializing Cryptographic API [42949373.330000] io scheduler noop registered [42949373.330000] io scheduler anticipatory registered (default) [42949373.330000] io scheduler deadline registered [42949373.330000] io scheduler cfq registered [42949373.330000] SoftDog: cannot register miscdev on minor=130 (err=-16) [42949373.330000] RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize [42949373.330000] loop: loaded (max 8 devices) [42949373.330000] nbd: registered device at major 43 [42949373.330000] PPP generic driver version 2.4.2 [42949373.330000] PPP Deflate Compression module registered [42949373.330000] PPP BSD Compression module registered [42949373.330000] NET: Registered protocol family 24 [42949373.330000] SLIP: version 0.8.4-NET3.019-NEWTTY (dynamic channels, max=256). [42949373.330000] CSLIP: code copyright 1989 Regents of the University of California. [42949373.330000] SLIP linefill/keepalive option. [42949373.330000] tun: Universal TUN/TAP device driver, 1.6 [42949373.330000] tun: (C) 1999-2004 Max Krasnyansky <[EMAIL PROTECTED]> [42949373.330000] ip_conntrack version 2.4 (1975 buckets, 15800 max) - 224 bytes per conntrack [42949373.740000] ip_tables: (C) 2000-2006 Netfilter Core Team [42949374.500000] ipt_recent v0.3.1: Stephen Frost <[EMAIL PROTECTED]>. http://snowman.net/projects/ipt_recent/ [42949374.500000] TCP bic registered [42949374.500000] Initializing IPsec netlink socket [42949374.500000] NET: Registered protocol family 1 [42949374.500000] NET: Registered protocol family 17 [42949374.500000] NET: Registered protocol family 15 [42949374.500000] Initialized stdio console driver [42949374.500000] Console initialized on /dev/tty0 [42949374.500000] Initializing software serial port version 1 [42949374.500000] ubda: unknown partition table [42949374.500000] kjournald starting. Commit interval 5 seconds [42949374.500000] EXT3-fs: mounted filesystem with ordered data mode. [42949374.500000] VFS: Mounted root (ext3 filesystem) readonly. HANG. Here i did a "sysrq b" [42949408.060000] SysRq : Resetting [42949408.060000] BUG: warning at kernel/irq/manage.c:276/free_irq() [42949408.060000] a1046fdc: [<a0068bd0>] free_irq+0x120/0x160 [42949408.060000] a1047008: [<a0023e78>] free_winch+0x58/0x70 [42949408.060000] a1047018: [<a0023ed8>] winch_cleanup+0x18/0x30 [42949408.060000] a1047024: [<a0018212>] do_uml_exitcalls+0x12/0x20 [42949408.060000] a104702c: [<a0018dfd>] uml_cleanup+0xd/0x10 [42949408.060000] a1047030: [<a0018e05>] machine_restart+0x5/0x20 [42949408.060000] a1047034: [<a005919f>] emergency_restart+0xf/0x20 [42949408.060000] a104703c: [<a0216437>] __handle_sysrq+0x97/0x140 [42949408.060000] a1047068: [<a0216515>] handle_sysrq+0x35/0x40 [42949408.060000] a104707c: [<a0028550>] sysrq_proc+0x30/0x40 [42949408.060000] a1047090: [<a00284d4>] with_console+0x64/0xb0 [42949408.060000] a10470b4: [<a00888f9>] kmem_cache_alloc+0x39/0x60 [42949408.060000] a1047130: [<a006da53>] mempool_alloc+0x33/0xf0 [42949408.060000] a1047358: [<a0028520>] sysrq_proc+0x0/0x40 [42949408.060000] a1047360: [<a00285e8>] mconsole_sysrq+0x88/0x90 [42949408.060000] a1047368: [<a0028520>] sysrq_proc+0x0/0x40 [42949408.060000] a1047380: [<a0027794>] mconsole_interrupt+0x44/0x120 [42949408.060000] a1047390: [<a0031ef8>] set_signals+0x18/0x30 [42949408.060000] a1047398: [<a00888f9>] kmem_cache_alloc+0x39/0x60 [42949408.060000] a1047414: [<a006da53>] mempool_alloc+0x33/0xf0 [42949408.060000] a1047640: [<a0068689>] handle_IRQ_event+0x39/0x90 [42949408.060000] a1047664: [<a006873e>] __do_IRQ+0x5e/0xc0 [42949408.060000] a1047680: [<a0015f20>] sigio_handler+0x0/0x80 [42949408.060000] a1047688: [<a0016560>] do_IRQ+0x30/0x40 [42949408.060000] a1047694: [<a0015f83>] sigio_handler+0x63/0x80 [42949408.060000] a10476a8: [<a0036d49>] sig_handler_common_skas+0xd9/0x130 [42949408.060000] a10476c8: [<a0032066>] sig_handler+0x76/0x80 [42949408.060000] a104771c: [<a00c1374>] create_elf_tables+0x64/0x730 [42949408.060000] a1047760: [<a0020280>] do_ops+0x0/0x190 [42949408.060000] a1047774: [<a00797f6>] do_no_page+0x136/0x2a0 [42949408.060000] a10477b0: [<a0020460>] fix_range+0x50/0x60 [42949408.060000] a10477c4: [<a0020280>] do_ops+0x0/0x190 [42949408.060000] a10477c8: [<a00204cd>] flush_tlb_range_skas+0x3d/0x50 [42949408.060000] a10477dc: [<a001b266>] flush_tlb_page+0x26/0x30 [42949408.060000] a1047814: [<a02eaf23>] tcgetattr+0x93/0xa0 [42949408.060000] a104783c: [<a0092ee7>] bio_phys_segments+0x27/0x30 [42949408.060000] a1047850: [<a002ecde>] file_io+0x3e/0xf0 [42949408.060000] a104787c: [<a002a8a4>] do_ubd_request+0xa4/0xd0 [42949408.060000] a1047884: [<a02ea420>] __libc_write+0x0/0x60 [42949408.060000] a1047888: [<a0018240>] copy_to_user_proc+0x0/0x50 [42949408.060000] a10478d8: [<a0029719>] ubd_handler+0xa9/0xb0 [42949408.060000] a10478e4: [<a0018290>] copy_from_user_proc+0x0/0x50 [42949408.060000] a1047930: [<a0029725>] ubd_intr+0x5/0x10 [42949408.060000] a1047934: [<a00686af>] handle_IRQ_event+0x5f/0x90 [42949408.060000] a1047958: [<a006875d>] __do_IRQ+0x7d/0xc0 [42949408.060000] a1047970: [<a002fb71>] os_waiting_for_events+0x21/0xb0 [42949408.060000] a1047988: [<a0015f4d>] sigio_handler+0x2d/0x80 [42949408.060000] a104799c: [<a0036d4e>] sig_handler_common_skas+0xde/0x130 [42949408.060000] a10479cc: [<a0031ef8>] set_signals+0x18/0x30 [42949408.060000] a10479fc: [<a0099de3>] compute_creds+0x83/0x90 [42949408.060000] a1047a24: [<a00c2bf7>] load_elf_binary+0xb37/0x10a0 [42949408.060000] a1047a4c: [<a008cd7d>] do_sync_read+0xdd/0x140 [42949408.060000] a1047ab4: [<a006f1b2>] get_page_from_freelist+0xc2/0xf0 [42949408.060000] a1047adc: [<a006f23d>] __alloc_pages+0x5d/0x330 [42949408.060000] a1047b44: [<a009880c>] copy_strings+0xfc/0x3b0 [42949408.060000] a1047b5c: [<a0099f14>] search_binary_handler+0x64/0x100 [42949408.060000] a1047b8c: [<a009a139>] do_execve+0x189/0x240 [42949408.060000] a1047ba8: [<a00151c0>] init+0x0/0x180 [42949408.060000] a1047bb4: [<a0015b08>] execve1+0x38/0x90 [42949408.060000] a1047bdc: [<a0015b80>] um_execve+0x20/0x60 [42949408.060000] a1047bf4: [<a001518c>] run_init_process+0x4c/0x80 [42949408.060000] a1047c04: [<a00a1a44>] sys_dup+0x24/0x30 [42949408.060000] a1047c14: [<a001529c>] init+0xdc/0x180 [42949408.060000] a1047c30: [<a0031402>] run_kernel_thread+0x52/0x60 [42949408.060000] a1047c40: [<a00151c0>] init+0x0/0x180 [42949408.060000] a1047c50: [<a00313d5>] run_kernel_thread+0x25/0x60 [42949408.060000] a1047cac: [<a0040b28>] schedule_tail+0x28/0x190 [42949408.060000] a1047cd4: [<a00151c0>] init+0x0/0x180 [42949408.060000] a1047ce0: [<a001fc95>] new_thread_handler+0xc5/0x120 [42949408.060000] a1047ce4: [<a00151c0>] init+0x0/0x180 [42949408.060000] a1047d5c: [<a02d1ac1>] kill+0x11/0x20 [42949408.060000] [42949408.060000] BUG: warning at kernel/irq/manage.c:276/free_irq() [42949408.060000] a1046fb0: [<a0068bd0>] free_irq+0x120/0x160 [42949408.060000] a1046fc4: [<a0088b23>] kfree+0x23/0x90 [42949408.060000] a1046fdc: [<a0021c8e>] close_one_chan+0x8e/0xb0 [42949408.060000] a1046fec: [<a0021ccf>] close_chan+0x1f/0x30 [42949408.060000] a1047004: [<a00235d1>] close_lines+0x31/0x40 [42949408.060000] a1047018: [<a0021395>] console_exit+0x25/0x30 [42949408.060000] a1047024: [<a0018212>] do_uml_exitcalls+0x12/0x20 [42949408.060000] a104702c: [<a0018dfd>] uml_cleanup+0xd/0x10 [42949408.060000] a1047030: [<a0018e05>] machine_restart+0x5/0x20 [42949408.060000] a1047034: [<a005919f>] emergency_restart+0xf/0x20 [42949408.060000] a104703c: [<a0216437>] __handle_sysrq+0x97/0x140 [42949408.060000] a1047068: [<a0216515>] handle_sysrq+0x35/0x40 [42949408.060000] a104707c: [<a0028550>] sysrq_proc+0x30/0x40 [42949408.060000] a1047090: [<a00284d4>] with_console+0x64/0xb0 [42949408.060000] a10470b4: [<a00888f9>] kmem_cache_alloc+0x39/0x60 [42949408.060000] a1047130: [<a006da53>] mempool_alloc+0x33/0xf0 [42949408.060000] a1047358: [<a0028520>] sysrq_proc+0x0/0x40 [42949408.060000] a1047360: [<a00285e8>] mconsole_sysrq+0x88/0x90 [42949408.060000] a1047368: [<a0028520>] sysrq_proc+0x0/0x40 [42949408.060000] a1047380: [<a0027794>] mconsole_interrupt+0x44/0x120 [42949408.060000] a1047390: [<a0031ef8>] set_signals+0x18/0x30 [42949408.060000] a1047398: [<a00888f9>] kmem_cache_alloc+0x39/0x60 [42949408.060000] a1047414: [<a006da53>] mempool_alloc+0x33/0xf0 [42949408.060000] a1047640: [<a0068689>] handle_IRQ_event+0x39/0x90 [42949408.060000] a1047664: [<a006873e>] __do_IRQ+0x5e/0xc0 [42949408.060000] a1047680: [<a0015f20>] sigio_handler+0x0/0x80 [42949408.060000] a1047688: [<a0016560>] do_IRQ+0x30/0x40 [42949408.060000] a1047694: [<a0015f83>] sigio_handler+0x63/0x80 [42949408.060000] a10476a8: [<a0036d49>] sig_handler_common_skas+0xd9/0x130 [42949408.060000] a10476c8: [<a0032066>] sig_handler+0x76/0x80 [42949408.060000] a104771c: [<a00c1374>] create_elf_tables+0x64/0x730 [42949408.060000] a1047760: [<a0020280>] do_ops+0x0/0x190 [42949408.060000] a1047774: [<a00797f6>] do_no_page+0x136/0x2a0 [42949408.060000] a10477b0: [<a0020460>] fix_range+0x50/0x60 [42949408.060000] a10477c4: [<a0020280>] do_ops+0x0/0x190 [42949408.060000] a10477c8: [<a00204cd>] flush_tlb_range_skas+0x3d/0x50 [42949408.060000] a10477dc: [<a001b266>] flush_tlb_page+0x26/0x30 [42949408.060000] a1047814: [<a02eaf23>] tcgetattr+0x93/0xa0 [42949408.060000] a104783c: [<a0092ee7>] bio_phys_segments+0x27/0x30 [42949408.060000] a1047850: [<a002ecde>] file_io+0x3e/0xf0 [42949408.060000] a104787c: [<a002a8a4>] do_ubd_request+0xa4/0xd0 [42949408.060000] a1047884: [<a02ea420>] __libc_write+0x0/0x60 [42949408.060000] a1047888: [<a0018240>] copy_to_user_proc+0x0/0x50 [42949408.060000] a10478d8: [<a0029719>] ubd_handler+0xa9/0xb0 [42949408.060000] a10478e4: [<a0018290>] copy_from_user_proc+0x0/0x50 [42949408.060000] a1047930: [<a0029725>] ubd_intr+0x5/0x10 [42949408.060000] a1047934: [<a00686af>] handle_IRQ_event+0x5f/0x90 [42949408.060000] a1047958: [<a006875d>] __do_IRQ+0x7d/0xc0 [42949408.060000] a1047970: [<a002fb71>] os_waiting_for_events+0x21/0xb0 [42949408.060000] a1047988: [<a0015f4d>] sigio_handler+0x2d/0x80 [42949408.060000] a104799c: [<a0036d4e>] sig_handler_common_skas+0xde/0x130 [42949408.060000] a10479cc: [<a0031ef8>] set_signals+0x18/0x30 [42949408.060000] a10479fc: [<a0099de3>] compute_creds+0x83/0x90 [42949408.060000] a1047a24: [<a00c2bf7>] load_elf_binary+0xb37/0x10a0 [42949408.060000] a1047a4c: [<a008cd7d>] do_sync_read+0xdd/0x140 [42949408.060000] a1047ab4: [<a006f1b2>] get_page_from_freelist+0xc2/0xf0 [42949408.060000] a1047adc: [<a006f23d>] __alloc_pages+0x5d/0x330 [42949408.060000] a1047b44: [<a009880c>] copy_strings+0xfc/0x3b0 [42949408.060000] a1047b5c: [<a0099f14>] search_binary_handler+0x64/0x100 [42949408.060000] a1047b8c: [<a009a139>] do_execve+0x189/0x240 [42949408.060000] a1047ba8: [<a00151c0>] init+0x0/0x180 [42949408.060000] a1047bb4: [<a0015b08>] execve1+0x38/0x90 [42949408.060000] a1047bdc: [<a0015b80>] um_execve+0x20/0x60 [42949408.060000] a1047bf4: [<a001518c>] run_init_process+0x4c/0x80 [42949408.060000] a1047c04: [<a00a1a44>] sys_dup+0x24/0x30 [42949408.060000] a1047c14: [<a001529c>] init+0xdc/0x180 [42949408.060000] a1047c30: [<a0031402>] run_kernel_thread+0x52/0x60 [42949408.060000] a1047c40: [<a00151c0>] init+0x0/0x180 [42949408.060000] a1047c50: [<a00313d5>] run_kernel_thread+0x25/0x60 [42949408.060000] a1047cac: [<a0040b28>] schedule_tail+0x28/0x190 [42949408.060000] a1047cd4: [<a00151c0>] init+0x0/0x180 [42949408.060000] a1047ce0: [<a001fc95>] new_thread_handler+0xc5/0x120 [42949408.060000] a1047ce4: [<a00151c0>] init+0x0/0x180 [42949408.060000] a1047d5c: [<a02d1ac1>] kill+0x11/0x20 [42949408.060000] [42949408.060000] BUG: warning at kernel/irq/manage.c:276/free_irq() [42949408.060000] a1046fb0: [<a0068bd0>] free_irq+0x120/0x160 [42949408.060000] a1046fdc: [<a0021ca9>] close_one_chan+0xa9/0xb0 [42949408.060000] a1046fec: [<a0021ccf>] close_chan+0x1f/0x30 [42949408.060000] a1047004: [<a00235d1>] close_lines+0x31/0x40 [42949408.060000] a1047018: [<a0021395>] console_exit+0x25/0x30 [42949408.060000] a1047024: [<a0018212>] do_uml_exitcalls+0x12/0x20 [42949408.060000] a104702c: [<a0018dfd>] uml_cleanup+0xd/0x10 [42949408.060000] a1047030: [<a0018e05>] machine_restart+0x5/0x20 [42949408.060000] a1047034: [<a005919f>] emergency_restart+0xf/0x20 [42949408.060000] a104703c: [<a0216437>] __handle_sysrq+0x97/0x140 [42949408.060000] a1047068: [<a0216515>] handle_sysrq+0x35/0x40 [42949408.060000] a104707c: [<a0028550>] sysrq_proc+0x30/0x40 [42949408.060000] a1047090: [<a00284d4>] with_console+0x64/0xb0 [42949408.060000] a10470b4: [<a00888f9>] kmem_cache_alloc+0x39/0x60 [42949408.060000] a1047130: [<a006da53>] mempool_alloc+0x33/0xf0 [42949408.060000] a1047358: [<a0028520>] sysrq_proc+0x0/0x40 [42949408.060000] a1047360: [<a00285e8>] mconsole_sysrq+0x88/0x90 [42949408.060000] a1047368: [<a0028520>] sysrq_proc+0x0/0x40 [42949408.060000] a1047380: [<a0027794>] mconsole_interrupt+0x44/0x120 [42949408.060000] a1047390: [<a0031ef8>] set_signals+0x18/0x30 [42949408.060000] a1047398: [<a00888f9>] kmem_cache_alloc+0x39/0x60 [42949408.060000] a1047414: [<a006da53>] mempool_alloc+0x33/0xf0 [42949408.060000] a1047640: [<a0068689>] handle_IRQ_event+0x39/0x90 [42949408.060000] a1047664: [<a006873e>] __do_IRQ+0x5e/0xc0 [42949408.060000] a1047680: [<a0015f20>] sigio_handler+0x0/0x80 [42949408.060000] a1047688: [<a0016560>] do_IRQ+0x30/0x40 [42949408.060000] a1047694: [<a0015f83>] sigio_handler+0x63/0x80 [42949408.060000] a10476a8: [<a0036d49>] sig_handler_common_skas+0xd9/0x130 [42949408.060000] a10476c8: [<a0032066>] sig_handler+0x76/0x80 [42949408.060000] a104771c: [<a00c1374>] create_elf_tables+0x64/0x730 [42949408.060000] a1047760: [<a0020280>] do_ops+0x0/0x190 [42949408.060000] a1047774: [<a00797f6>] do_no_page+0x136/0x2a0 [42949408.060000] a10477b0: [<a0020460>] fix_range+0x50/0x60 [42949408.060000] a10477c4: [<a0020280>] do_ops+0x0/0x190 [42949408.060000] a10477c8: [<a00204cd>] flush_tlb_range_skas+0x3d/0x50 [42949408.060000] a10477dc: [<a001b266>] flush_tlb_page+0x26/0x30 [42949408.060000] a1047814: [<a02eaf23>] tcgetattr+0x93/0xa0 [42949408.060000] a104783c: [<a0092ee7>] bio_phys_segments+0x27/0x30 [42949408.060000] a1047850: [<a002ecde>] file_io+0x3e/0xf0 [42949408.060000] a104787c: [<a002a8a4>] do_ubd_request+0xa4/0xd0 [42949408.060000] a1047884: [<a02ea420>] __libc_write+0x0/0x60 [42949408.060000] a1047888: [<a0018240>] copy_to_user_proc+0x0/0x50 [42949408.060000] a10478d8: [<a0029719>] ubd_handler+0xa9/0xb0 [42949408.060000] a10478e4: [<a0018290>] copy_from_user_proc+0x0/0x50 [42949408.060000] a1047930: [<a0029725>] ubd_intr+0x5/0x10 [42949408.060000] a1047934: [<a00686af>] handle_IRQ_event+0x5f/0x90 [42949408.060000] a1047958: [<a006875d>] __do_IRQ+0x7d/0xc0 [42949408.060000] a1047970: [<a002fb71>] os_waiting_for_events+0x21/0xb0 [42949408.060000] a1047988: [<a0015f4d>] sigio_handler+0x2d/0x80 [42949408.060000] a104799c: [<a0036d4e>] sig_handler_common_skas+0xde/0x130 [42949408.060000] a10479cc: [<a0031ef8>] set_signals+0x18/0x30 [42949408.060000] a10479fc: [<a0099de3>] compute_creds+0x83/0x90 [42949408.060000] a1047a24: [<a00c2bf7>] load_elf_binary+0xb37/0x10a0 [42949408.060000] a1047a4c: [<a008cd7d>] do_sync_read+0xdd/0x140 [42949408.060000] a1047ab4: [<a006f1b2>] get_page_from_freelist+0xc2/0xf0 [42949408.060000] a1047adc: [<a006f23d>] __alloc_pages+0x5d/0x330 [42949408.060000] a1047b44: [<a009880c>] copy_strings+0xfc/0x3b0 [42949408.060000] a1047b5c: [<a0099f14>] search_binary_handler+0x64/0x100 [42949408.060000] a1047b8c: [<a009a139>] do_execve+0x189/0x240 [42949408.060000] a1047ba8: [<a00151c0>] init+0x0/0x180 [42949408.060000] a1047bb4: [<a0015b08>] execve1+0x38/0x90 [42949408.060000] a1047bdc: [<a0015b80>] um_execve+0x20/0x60 [42949408.060000] a1047bf4: [<a001518c>] run_init_process+0x4c/0x80 [42949408.060000] a1047c04: [<a00a1a44>] sys_dup+0x24/0x30 [42949408.060000] a1047c14: [<a001529c>] init+0xdc/0x180 [42949408.060000] a1047c30: [<a0031402>] run_kernel_thread+0x52/0x60 [42949408.060000] a1047c40: [<a00151c0>] init+0x0/0x180 [42949408.060000] a1047c50: [<a00313d5>] run_kernel_thread+0x25/0x60 [42949408.060000] a1047cac: [<a0040b28>] schedule_tail+0x28/0x190 [42949408.060000] a1047cd4: [<a00151c0>] init+0x0/0x180 [42949408.060000] a1047ce0: [<a001fc95>] new_thread_handler+0xc5/0x120 [42949408.060000] a1047ce4: [<a00151c0>] init+0x0/0x180 [42949408.060000] a1047d5c: [<a02d1ac1>] kill+0x11/0x20 [42949408.060000] Segmentation fault :( ------------------------------------------------------------------------- Take Surveys. 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