Kernel mode fault 2.4.26-um1

uml-devel Bernard Johnson 1 participant 2 messages May 15, 2004 – May 17, 2004 User-mode Linux (UML)

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Bernard Johnson

author

2004-05-15 05:20 UTC #0 lore raw

I'm getting this crash on 2.4.26-um1

Breakpoint 1, panic (
fmt=0xa01d8b00 "Kernel mode fault at addr 0x%lx, ip 0x%lx, ip 0x%lx") at panic.c:60
60 bust_spinlocks(1);
(gdb) bt
#0 panic (fmt=0xa01d8b00 "Kernel mode fault at addr 0x%lx, ip 0x%lx") at panic.c:60
#1 0xa00d1019 in segv (address=8, ip=2685769919, is_write=0, is_user=0, sc=0xa4a44274) at trap_kern.c:149
#2 0xa00d1416 in segv_handler (sig=11, regs=0xa4a44274) at trap_user.c:67 #3 0xa00d4b3c in sig_handler_common_tt (sig=11, sc_ptr=0xa4a47d28) at trap_user.c:43
#4 0xa00d14f3 in sig_handler (sig=0, sc=
{gs = 0, __gsh = 0, fs = 0, __fsh = 0, es = 43, __esh = 0, ds = 43, __dsh = 0, edi = 2762227712, esi = 2762235236, ebp = 2762235212, esp = 2762235188, ebx = 0, edx = 4294901759, ecx = 2685202592, eax = 4, trapno = 14, err = 4, eip = 2685769919, cs = 35, __csh = 0, eflags = 66182, esp_at_signal = 2762235188, ss = 43, __ssh = 0, fpstate = 0x0, oldmask = 134285824, cr2 = 8}) at trap_user.c:101
#5 <signal handler called>
#6 rwsem_down_failed_common (sem=0x0, waiter=0xa4a45d64, adjustment=-65537) at list.h:40
Previous frame inner to this frame (corrupt stack?)

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Bernard Johnson

author

2004-05-17 18:45 UTC #1 lore raw

I was asked in email for more information... Here is additional information...

I'm using ttmode (have been unable to integrate the skas3 patch into a Fedora Core kernel RPM). The host system is a Fedora Core 1 system, fully updated, standard kernel.

The crash is completely reproducible, when I start a particular application (behemoth ColdFusion MX 6.1). The crash happens when the guest OS is either Fedora Core 1 or RedHat 8, so I don't believe it's related to the guest OS.

I have a kernel linux-2.4.22-um6+fedoraseg
(http://toast.debian.net/~may/umlproject/unpackaged/fedoraseg.patch) that will run this application under guest Fedora Core 1, although, it seems to not run under RedHat 8 guest OS.

"Bernard Johnson" <[email protected]> wrote in message news:[email protected]...

Quoted 16 lines

I'm getting this crash on 2.4.26-um1
Breakpoint 1, panic (
fmt=0xa01d8b00 "Kernel mode fault at addr 0x%lx, ip 0x%lx, ip 0x%lx") at panic.c:60
60 bust_spinlocks(1);
(gdb) bt
#0 panic (fmt=0xa01d8b00 "Kernel mode fault at addr 0x%lx, ip 0x%lx") at panic.c:60
#1 0xa00d1019 in segv (address=8, ip=2685769919, is_write=0, is_user=0, sc=0xa4a44274) at trap_kern.c:149
#2 0xa00d1416 in segv_handler (sig=11, regs=0xa4a44274) at trap_user.c:67 #3 0xa00d4b3c in sig_handler_common_tt (sig=11, sc_ptr=0xa4a47d28) at trap_user.c:43
#4 0xa00d14f3 in sig_handler (sig=0, sc=
{gs = 0, __gsh = 0, fs = 0, __fsh = 0, es = 43, __esh = 0, ds = 43, __dsh

Quoted 2 lines

0, edi = 2762227712, esi = 2762235236, ebp = 2762235212, esp = 2762235188, ebx = 0, edx = 4294901759, ecx = 2685202592, eax = 4, trapno = 14, err =

Quoted 5 lines

eip = 2685769919, cs = 35, __csh = 0, eflags = 66182, esp_at_signal = 2762235188, ss = 43, __ssh = 0, fpstate = 0x0, oldmask = 134285824, cr2 = 8}) at trap_user.c:101
#5 <signal handler called>
#6 rwsem_down_failed_common (sem=0x0, waiter=0xa4a45d64,

adjustment=-65537)

Quoted 7 lines

at list.h:40
Previous frame inner to this frame (corrupt stack?)

Quoted 5 lines

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