hello wonderful umlers,
here's a wonderfully infrequent but nagging startup
failure that usually has a useless (no stack depth,
or just corrupt) backtrace...
Here's all the user sees:
Checking for the skas3 patch in the host...found
Checking for /proc/mm...found
Enterasys Node Driver v0.1 (4, 15, 0)
Kernel panic: Segfault with no mm
In idle task - not syncing
and then it dumps core - that, this once, had a
(possibly informative) backtrace (attached).
host is 2.4.20-31 redhat9 + skas - nptl
guest is 2.4.26-3um + core_on_panic and other
local mods that are *not* in this trace.
thank you for any insight.
(please, no suggestions to update :-)
--
db
(gdb) bt
#0 0x0815dfc1 in kill ()
#1 0x0817a2d2 in raise ()
#2 0x0815e2ad in abort ()
#3 0x080dac3e in panic_coreonpanic (self=0x81f6c3c, unused1=0,
unused2=0x820ed60) at um_arch.c:425
#4 0x0805e46a in notifier_call_chain (n=0x0, val=0, v=0x820ed60) at sys.c:148
#5 0x080533d9 in panic (fmt=0x81ba50f "Segfault with no mm") at panic.c:77
#6 0x080da339 in segv (address=3221194032, ip=0, is_write=0, is_user=0,
sc=0xbfff8270) at trap_kern.c:149
#7 0x080da67d in segv_handler (sig=11, regs=0xbfff8270) at trap_user.c:74
#8 0x080dcad1 in sig_handler_common_skas (sig=11, sc_ptr=0x58) at
trap_user.c:35
#9 0x080da69e in sig_handler (sig=11, sc={gs = 0, __gsh = 0, fs = 0, __fsh =
0, es = 43, __esh = 0, ds = 43, __dsh = 0, edi = 136676108, esi = 3221193328,
ebp = 3221197508, esp = 3221197484, ebx = 3221197552, edx = 1, ecx =
2147767344, eax = 3221192704, trapno = 14, err = 4, eip = 135121527, cs = 35,
__csh = 0, eflags = 66182, esp_at_signal = 3221197484, ss = 43, __ssh = 0,
fpstate = 0x0, oldmask = 436216320, cr2 = 3221194032}) at trap_user.c:109
#10
#11 sig_handler_common_skas (sig=11, sc_ptr=0xbfff92f0) at trap_user.c:25
#12 0x080da69e in sig_handler (sig=11, sc={gs = 0, __gsh = 0, fs = 0, __fsh =
0, es = 43, __esh = 0, ds = 43, __dsh = 0, edi = 136676108, esi = 3221193328,
ebp = 3221198300, esp = 3221198276, ebx = 3221198344, edx = 1, ecx =
2147767344, eax = 3221192704, trapno = 14, err = 4, eip = 135121527, cs = 35,
__csh = 0, eflags = 66182, esp_at_signal = 3221198276, ss = 43, __ssh = 0,
fpstate = 0x0, oldmask = 436216320, cr2 = 3221194032}) at trap_user.c:109
#13
#14 sig_handler_common_skas (sig=11, sc_ptr=0xbfff9608) at trap_user.c:25
#15 0x080da69e in sig_handler (sig=11, sc={gs = 0, __gsh = 0, fs = 0, __fsh =
0, es = 43, __esh = 0, ds = 43, __dsh = 0, edi = 136676108, esi = 3221193328,
ebp = 3221199092, esp = 3221199068, ebx = 3221199136, edx = 1, ecx =
2147767344, eax = 3221192704, trapno = 14, err = 4, eip = 135121527, cs = 35,
__csh = 0, eflags = 66182, esp_at_signal = 3221199068, ss = 43, __ssh = 0,
fpstate = 0x0, oldmask = 436216320, cr2 = 3221194032}) at trap_user.c:109
#16
#17 sig_handler_common_skas (sig=11, sc_ptr=0xbfff9920) at trap_user.c:25
#18 0x080da69e in sig_handler (sig=11, sc={gs = 0, __gsh = 0, fs = 0, __fsh =
0, es = 43, __esh = 0, ds = 43, __dsh = 0, edi = 136676108, esi = 3221193328,
ebp = 3221199884, esp = 3221199860, ebx = 3221199928, edx = 1, ecx =
2147767344, eax = 3221192704, trapno = 14, err = 4, eip = 135121527, cs = 35,
__csh = 0, eflags = 66182, esp_at_signal = 3221199860, ss = 43, __ssh = 0,
fpstate = 0x0, oldmask = 436216320, cr2 = 3221194032}) at trap_user.c:109
#19
#20 sig_handler_common_skas (sig=11, sc_ptr=0xbfff9c38) at trap_user.c:25
#21 0x080da69e in sig_handler (sig=11, sc={gs = 0, __gsh = 0, fs = 0, __fsh =
0, es = 43, __esh = 0, ds = 43, __dsh = 0, edi = 136676108, esi = 3221193328,
ebp = 3221200676, esp = 3221200652, ebx = 3221200720, edx = 1, ecx =
2147767344, eax = 3221192704, trapno = 14, err = 4, eip = 135121527, cs = 35,
__csh = 0, eflags = 66182, esp_at_signal = 3221200652, ss = 43, __ssh = 0,
fpstate = 0x0, oldmask = 436216320, cr2 = 3221194032}) at trap_user.c:109
#22
#23 sig_handler_common_skas (sig=11, sc_ptr=0xbfff9f50) at trap_user.c:25
#24 0x080da69e in sig_handler (sig=11, sc={gs = 0, __gsh = 0, fs = 0, __fsh =
0, es = 43, __esh = 0, ds = 43, __dsh = 0, edi = 136676108, esi = 3221193328,
ebp = 3221201468, esp = 3221201444, ebx = 3221201512, edx = 1, ecx =
2147767344, eax = 3221192704, trapno = 14, err = 4, eip = 135121527, cs = 35,
__csh = 0, eflags = 66182, esp_at_signal = 3221201444, ss = 43, __ssh = 0,
fpstate = 0x0, oldmask = 436216320, cr2 = 3221194032}) at trap_user.c:109
#25
#26 sig_handler_common_skas (sig=11, sc_ptr=0xbfffa268) at trap_user.c:25
#27 0x080da69e in sig_handler (sig=11, sc={gs = 0, __gsh = 0, fs = 0, __fsh =
0, es = 43, __esh = 0, ds = 43, __dsh = 0, edi = 136676108, esi = 3221193328,
ebp = 3221202260, esp = 3221202236, ebx = 3221202304, edx = 1, ecx =
2147767344, eax = 3221192704, trapno = 14, err = 4, eip = 135121527, cs = 35,
__csh = 0, eflags = 66182, esp_at_signal = 3221202236, ss = 43, __ssh = 0,
fpstate = 0x0, oldmask = 436216320, cr2 = 3221194032}) at trap_user.c:109
#28
#29 sig_handler_common_skas (sig=11, sc_ptr=0xbfffa580) a
