[uml-user] arbitrary kernel crash during stratup

[Toralf F. <tor...@gm...>]

Is the following back trace another example of  signal issue of UML :

(gdb) bt
#0  0x469fc920 in ?? ()
#1  0x08071656 in hard_handler (sig=138428456, si=0x840404c <cpu0_irqstack+76>, p=0x84040e0 <cpu0_irqstack+224>) at arch/um/os-Linux/signal.c:162
#2  <signal handler called>
#3  0x469fc920 in ?? ()
#4  0x08071656 in hard_handler (sig=138429736, si=0x840454c <cpu0_irqstack+1356>, p=0x84045e0 <cpu0_irqstack+1504>) at arch/um/os-Linux/signal.c:162   
#5  <signal handler called>
#6  0x469fc920 in ?? ()
#7  0x08071656 in hard_handler (sig=138431016, si=0x8404a4c <cpu0_irqstack+2636>, p=0x8404ae0 <cpu0_irqstack+2784>) at arch/um/os-Linux/signal.c:162
#8  <signal handler called>
#9  0x469fc920 in ?? ()
#10 0x08071656 in hard_handler (sig=138432296, si=0x8404f4c <cpu0_irqstack+3916>, p=0x8404fe0 <cpu0_irqstack+4064>) at arch/um/os-Linux/signal.c:162
#11 <signal handler called>
#12 0x469fc920 in ?? ()
#13 0x08071656 in hard_handler (sig=138433576, si=0x840544c <cpu0_irqstack+5196>, p=0x84054e0 <cpu0_irqstack+5344>) at arch/um/os-Linux/signal.c:162
#14 <signal handler called>
#15 0x469fc920 in ?? ()
#16 0x08071656 in hard_handler (sig=138434856, si=0x840594c <cpu0_irqstack+6476>, p=0x84059e0 <cpu0_irqstack+6624>) at arch/um/os-Linux/signal.c:162
#17 <signal handler called>
#18 0x469fc920 in ?? ()
#19 0x08071656 in hard_handler (sig=138436136, si=0x8405e4c <cpu0_irqstack+7756>, p=0x8405ee0 <cpu0_irqstack+7904>) at arch/um/os-Linux/signal.c:162
#20 <signal handler called>
#21 0x469fc920 in ?? ()
#22 0x08071656 in hard_handler (sig=138437416, si=0x840634c <cpu0_irqstack+9036>, p=0x84063e0 <cpu0_irqstack+9184>) at arch/um/os-Linux/signal.c:162
#23 <signal handler called>
#24 0x469fc920 in ?? ()
#25 0x08071656 in hard_handler (sig=138438696, si=0x840684c <cpu0_irqstack+10316>, p=0x84068e0 <cpu0_irqstack+10464>) at arch/um/os-Linux/signal.c:162
#26 <signal handler called>
#27 0x469fc920 in ?? ()
#28 0x08071656 in hard_handler (sig=138439976, si=0x8406d4c <cpu0_irqstack+11596>, p=0x8406de0 <cpu0_irqstack+11744>) at arch/um/os-Linux/signal.c:162
#29 <signal handler called>
#30 0x469fc920 in ?? ()
#31 0x08071656 in hard_handler (sig=138441256, si=0x840724c <cpu0_irqstack+12876>, p=0x84072e0 <cpu0_irqstack+13024>) at arch/um/os-Linux/signal.c:162
#32 <signal handler called>
#33 0x46a67d56 in ?? ()
#34 0x08070888 in os_unmap_memory (addr=0x0, len=0) at arch/um/os-Linux/process.c:178
#35 0x08060f07 in flush_tlb_kernel_range_common (start=0, end=2229522432) at arch/um/kernel/tlb.c:357
#36 0x08061913 in flush_tlb_kernel_vm () at arch/um/kernel/tlb.c:482
#37 0x08061ed1 in segv (fi=<incomplete type>, ip=1185614429, is_user=0, regs=0x840785c <cpu0_irqstack+14428>) at arch/um/kernel/trap.c:204
#38 0x080621c3 in segv_handler (sig=11, unused_si=0x8407b0c <cpu0_irqstack+15116>, regs=0x840785c <cpu0_irqstack+14428>) at arch/um/kernel/trap.c:185
#39 0x080719b8 in sig_handler_common (sig=11, si=0x8407b0c <cpu0_irqstack+15116>, mc=0x8407ba0 <cpu0_irqstack+15264>) at arch/um/os-Linux/signal.c:44
---Type <return> to continue, or q <return> to quit---
#40 0x08071afd in sig_handler (sig=0, si=0x8407b0c <cpu0_irqstack+15116>, mc=0x8407ba0 <cpu0_irqstack+15264>) at arch/um/os-Linux/signal.c:231
#41 0x0807164b in hard_handler (sig=4096, si=0x8407b0c <cpu0_irqstack+15116>, p=0x8407ba0 <cpu0_irqstack+15264>) at arch/um/os-Linux/signal.c:165
#42 <signal handler called>
#43 0x46ab0a5d in ?? ()
#44 0x0825d130 in is_gpt_valid (state=0x7800, lba=5050309811229425664, gpt=0x4611f400, ptes=0x45c4ac80) at block/partitions/efi.c:388
#45 0x0825bc66 in rescan_partitions (disk=0x4611f400, bdev=0x45c4ac80) at block/partition-generic.c:434
#46 0x08128d2c in __blkdev_get (bdev=0x45c4ac80, mode=1, for_part=0) at fs/block_dev.c:1139
#47 0x081292fc in blkdev_get (bdev=0x45c4ac80, mode=1, holder=0x0) at fs/block_dev.c:1246
#48 0x08259680 in register_disk (disk=<optimized out>) at block/genhd.c:554
#49 add_disk (disk=0x4611f400) at block/genhd.c:616
#50 0x0806a30d in ubd_disk_register (major=138451500, size=7422886281216, unit=0, disk_out=0x0) at arch/um/drivers/ubd_kern.c:835
#51 0x0806aeb2 in ubd_add (n=0, error_out=0x4607ff5c) at arch/um/drivers/ubd_kern.c:871
#52 0x0804b147 in ubd_init () at arch/um/drivers/ubd_kern.c:1072
#53 0x0804977a in do_one_initcall (fn=0x804b0bb <ubd_init>) at init/main.c:690
#54 0x0804993a in do_initcall_level (level=<optimized out>) at init/main.c:761
#55 do_initcalls () at init/main.c:769
#56 do_basic_setup () at init/main.c:788
#57 kernel_init_freeable () at init/main.c:890
#58 0x0833b8cb in kernel_init (unused=0x0) at init/main.c:822
#59 0x0805f83a in new_thread_handler () at arch/um/kernel/process.c:140
#60 0x00000000 in ?? ()



The command line is :

/usr/local/bin/linux-v3.9-rc5 earlyprintk ubda=/home/tfoerste/virtual/uml/trinity ubdb=/mnt/ramdisk/swap_trinity eth0=tuntap,tap0,72:ef:3d:9f:c3:5a mem=970M con=pts con0=fd:0,fd:1 umid=uml

-- 
MfG/Sincerely
Toralf Förster
pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3