[issue827] kernel panic on HEAD from Oct. 4th sources

[Peter Avalos <sinknull@xxxxxxxxxxxxxxxxxxxxxxx>]

Peter Avalos <pavalos@theshell.com> added the comment:

I just got another one very similar to this with HEAD sources from about 10 days
ago. kernel and vmcore (*.21) are being uploaded to leaf right now.

Unread portion of the kernel message buffer:
panic: vm_fault: unrecoverable fault at 0xdeadc000 in entry 0xc04293a0
mp_lock = 00000000; cpuid = 0
Trace beginning at frame 0xee0764d4
panic(ee0764f8,ee076520,ee076524,ee076544,ee076554) at panic+0x14d
panic(c0377c0c,deadc000,c04293a0,135c7b0,c2a00190) at panic+0x14d
vm_fault(c0426000,deadc000,1,0,deadcade) at vm_fault+0xe2
trap_pfault(a,f1f9b800,da35c7b0,da35c7b0,ed11bd50) at trap_pfault+0xd9
trap(ee0765d0) at trap+0x4ab
calltrap() at calltrap+0xd
--- trap 0, eip = 0, esp = 0xee076614, ebp = 0xdeadcade ---
panic: vm_fault: unrecoverable fault at 0xdeadc000 in entry 0xc04293a0
mp_lock = 00000000; cpuid = 0
boot() called on cpu#0
Uptime: 10d18h51m39s

(kgdb) bt
#0  dumpsys () at ./machine/thread.h:83
#1  0xc01b39b1 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:375
#2  0xc01b3c74 in panic (fmt=0xc0377c0c "vm_fault: unrecoverable fault at %p in
entry %p") at /usr/src/sys/kern/kern_shutdown.c:800
#3  0xc02b7ceb in vm_fault (map=0xc0426000, vaddr=3735928832, fault_type=1
'\001', fault_flags=0) at /usr/src/sys/vm/vm_fault.c:301
#4  0xc032291d in trap_pfault (frame=0xee0763cc, usermode=0, eva=0) at
/usr/src/sys/platform/pc32/i386/trap.c:1029
#5  0xc0322f9c in trap (frame=0xee0763cc) at
/usr/src/sys/platform/pc32/i386/trap.c:721
#6  0xc03101b7 in calltrap () at /usr/src/sys/platform/pc32/i386/exception.s:785
#7  0xc030f25f in db_read_bytes (addr=3735931618, size=4, data=0xee076430
"Åü0À") at /usr/src/sys/platform/pc32/i386/db_interface.c:207
#8  0xc0151554 in db_get_value (addr=3735931618, size=4, is_signed=0) at
/usr/src/sys/ddb/db_access.c:58
#9  0xc030fe07 in db_stack_trace_cmd (addr=-301505324, have_addr=1, count=1018,
modif=0x0) at /usr/src/sys/platform/pc32/i386/db_trace.c:132
#10 0xc031006e in db_print_backtrace () at
/usr/src/sys/platform/pc32/i386/db_trace.c:443
#11 0xc01b3c58 in panic (fmt=0xc0377c0c "vm_fault: unrecoverable fault at %p in
entry %p") at /usr/src/sys/kern/kern_shutdown.c:796
#12 0xc02b7ceb in vm_fault (map=0xc0426000, vaddr=3735928832, fault_type=1
'\001', fault_flags=0) at /usr/src/sys/vm/vm_fault.c:301
#13 0xc032291d in trap_pfault (frame=0xee0765d0, usermode=0, eva=0) at
/usr/src/sys/platform/pc32/i386/trap.c:1029
#14 0xc0322f9c in trap (frame=0xee0765d0) at
/usr/src/sys/platform/pc32/i386/trap.c:721
#15 0xc03101b7 in calltrap () at /usr/src/sys/platform/pc32/i386/exception.s:785
#16 0xc01a5e09 in fill_kinfo_proc (p=0xda308598, kp=0xee07664c) at
/usr/src/sys/kern/kern_kinfo.c:88
#17 0xc01ac836 in sysctl_out_proc (p=0xda308598, req=0xee076c00, flags=0) at
/usr/src/sys/kern/kern_proc.c:651
#18 0xc01ad2a8 in sysctl_kern_proc (oidp=0xc0394620, arg1=0x0, arg2=0,
req=0xee076c00) at /usr/src/sys/kern/kern_proc.c:779
#19 0xc01c2f02 in sysctl_root (oidp=<value optimized out>, arg1=<value optimized
out>, arg2=3, req=0xee076c00) at /usr/src/sys/kern/kern_sysctl.c:1193
#20 0xc01c2ff4 in userland_sysctl (name=0xee076c88, namelen=3, old=0x281b1000,
oldlenp=0xbfbff0c4, inkernel=0, new=0x0, newlen=0, retval=0xee076c84) at
/usr/src/sys/kern/kern_sysctl.c:1268
#21 0xc01c31f5 in sys___sysctl (uap=0xee076cf0) at
/usr/src/sys/kern/kern_sysctl.c:1211
#22 0xc03236b3 in syscall2 (frame=0xee076d40) at
/usr/src/sys/platform/pc32/i386/trap.c:1386
#23 0xc0310266 in Xint0x80_syscall () at
/usr/src/sys/platform/pc32/i386/exception.s:876
#24 0x28123428 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

(kgdb) fr 16      
#16 0xc01a5e09 in fill_kinfo_proc (p=0xda308598, kp=0xee07664c) at
/usr/src/sys/kern/kern_kinfo.c:88
88                      kp->kp_sigignore = p->p_sigignore;      /* p_sigacts-> */
(kgdb) print p->p_sigacts 
$3 = (struct sigacts *) 0xdeadc0de

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