https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=191882
Bug ID: 191882
Summary: Multiple panics when ctld is running
Product: Base System
Version: 10.0-RELEASE
Hardware: amd64
OS: Any
Status: Needs Triage
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: freebsd-bugs@FreeBSD.org
Reporter: s...@mainstream.net
We are experiencing panics on multiple systems, running the in kernel iscsi
target
Systems all go through a panic loop started with a page fault, then 2 - 3
General Protection Fault Panics before the system returns to normal
Issue seams to be caused by heavy IO on the system not exclusively iscsi.
But ctld must be running for the panic to occur.
Up times very from a few minutes to a few days
I have a set of dumps for this most recent iteration on my home test box (it is
experiencing the same issue as my other boxes)
We have tried reinstalling the system and a build world to no avail.
Here is the text of the inital panic, I can up load the tar ball of the rest of
the data if needed (total size as a tbz2 is 977mb)
plfs.pl.mainstream.net dumped core - see /var/crash/vmcore.1
Tue Jul 15 08:38:40 EDT 2014
FreeBSD plfs.pl.mainstream.net 10.0-RELEASE-p6 FreeBSD 10.0-RELEASE-p6 #0: Tue
Jun 24 07:47:37 UTC 2014
r...@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64
panic: page fault
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This GDB was configured as "amd64-marcel-freebsd"...
Unread portion of the kernel message buffer:
kernel trap 12 with interrupts disabled
Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address = 0x0
fault code = supervisor write data, page not present
instruction pointer = 0x20:0xffffffff808c474e
stack pointer = 0x28:0xfffffe0838f936e0
frame pointer = 0x28:0xfffffe0838f93770
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags = resume, IOPL = 0
current process = 11 (idle: cpu0)
trap number = 12
panic: page fault
cpuid = 0
KDB: stack backtrace:
#0 0xffffffff808e7e90 at kdb_backtrace+0x60
#1 0xffffffff808af975 at panic+0x155
#2 0xffffffff80c8e762 at trap_fatal+0x3a2
#3 0xffffffff80c8ea39 at trap_pfault+0x2c9
#4 0xffffffff80c8e1c6 at trap+0x5e6
#5 0xffffffff80c75462 at calltrap+0x8
#6 0xffffffff80d65770 at handleevents+0x180
#7 0xffffffff80d66098 at timercb+0x308
#8 0xffffffff80d9073c at lapic_handle_timer+0x9c
#9 0xffffffff80c75fbc at Xtimerint+0x8c
#10 0xffffffff80359e77 at acpi_cpu_idle+0x137
#11 0xffffffff80c7972f at cpu_idle_acpi+0x3f
#12 0xffffffff80c797d3 at cpu_idle+0x93
#13 0xffffffff808d8b2e at sched_idletd+0x1ee
#14 0xffffffff80881a4a at fork_exit+0x9a
#15 0xffffffff80c7599e at fork_trampoline+0xe
Uptime: 3m14s
Dumping 1504 out of 32645 MB:..2%..11%..21%..31%..41%..52%..61%..71%..81%..91%
Reading symbols from /boot/kernel/nullfs.ko.symbols...done.
Loaded symbols for /boot/kernel/nullfs.ko.symbols
Reading symbols from /boot/kernel/zfs.ko.symbols...done.
Loaded symbols for /boot/kernel/zfs.ko.symbols
Reading symbols from /boot/kernel/opensolaris.ko.symbols...done.
Loaded symbols for /boot/kernel/opensolaris.ko.symbols
Reading symbols from /boot/kernel/geom_linux_lvm.ko.symbols...done.
Loaded symbols for /boot/kernel/geom_linux_lvm.ko.symbols
Reading symbols from /boot/kernel/uhid.ko.symbols...done.
Loaded symbols for /boot/kernel/uhid.ko.symbols
Reading symbols from /boot/kernel/ctl.ko.symbols...done.
Loaded symbols for /boot/kernel/ctl.ko.symbols
Reading symbols from /boot/kernel/iscsi.ko.symbols...done.
Loaded symbols for /boot/kernel/iscsi.ko.symbols
Reading symbols from /boot/kernel/kgssapi_krb5.ko.symbols...done.
Loaded symbols for /boot/kernel/kgssapi_krb5.ko.symbols
Reading symbols from /boot/kernel/kgssapi.ko.symbols...done.
Loaded symbols for /boot/kernel/kgssapi.ko.symbols
Reading symbols from /boot/kernel/crypto.ko.symbols...done.
Loaded symbols for /boot/kernel/crypto.ko.symbols
Reading symbols from /boot/kernel/rc4.ko.symbols...done.
Loaded symbols for /boot/kernel/rc4.ko.symbols
Reading symbols from /boot/kernel/nfsserver.ko.symbols...done.
Loaded symbols for /boot/kernel/nfsserver.ko.symbols
Reading symbols from /boot/kernel/nfs_common.ko.symbols...done.
Loaded symbols for /boot/kernel/nfs_common.ko.symbols
#0 doadump (textdump=<value optimized out>) at pcpu.h:219
219 pcpu.h: No such file or directory.
in pcpu.h
(kgdb) #0 doadump (textdump=<value optimized out>) at pcpu.h:219
#1 0xffffffff808af5f0 in kern_reboot (howto=260)
at /usr/src/sys/kern/kern_shutdown.c:447
#2 0xffffffff808af9b4 in panic (fmt=<value optimized out>)
at /usr/src/sys/kern/kern_shutdown.c:754
#3 0xffffffff80c8e762 in trap_fatal (frame=<value optimized out>,
eva=<value optimized out>) at /usr/src/sys/amd64/amd64/trap.c:882
#4 0xffffffff80c8ea39 in trap_pfault (frame=0xfffffe0838f93630, usermode=0)
at /usr/src/sys/amd64/amd64/trap.c:699
#5 0xffffffff80c8e1c6 in trap (frame=0xfffffe0838f93630)
at /usr/src/sys/amd64/amd64/trap.c:463
#6 0xffffffff80c75462 in calltrap ()
at /usr/src/sys/amd64/amd64/exception.S:232
#7 0xffffffff808c474e in callout_process (now=835132764813)
at /usr/src/sys/kern/kern_timeout.c:458
#8 0xffffffff80d65770 in handleevents (now=835132764813, fake=0)
at /usr/src/sys/kern/kern_clocksource.c:222
#9 0xffffffff80d66098 in timercb (et=<value optimized out>,
arg=<value optimized out>) at /usr/src/sys/kern/kern_clocksource.c:365
#10 0xffffffff80d9073c in lapic_handle_timer (frame=0xfffffe0838f93870)
at /usr/src/sys/x86/x86/local_apic.c:816
#11 0xffffffff80c75fbc in Xtimerint () at apic_vector.S:109
#12 0xffffffff80c72ae6 in acpi_cpu_c1 ()
at /usr/src/sys/amd64/acpica/acpi_machdep.c:95
#13 0xffffffff80359e77 in acpi_cpu_idle (sbt=<value optimized out>)
at /usr/src/sys/dev/acpica/acpi_cpu.c:1026
#14 0xffffffff80c7972f in cpu_idle_acpi (sbt=79351405)
at /usr/src/sys/amd64/amd64/machdep.c:680
#15 0xffffffff80c797d3 in cpu_idle (busy=0)
at /usr/src/sys/amd64/amd64/machdep.c:835
#16 0xffffffff808d8b2e in sched_idletd (dummy=<value optimized out>)
at /usr/src/sys/kern/sched_ule.c:2673
#17 0xffffffff80881a4a in fork_exit (
callout=0xffffffff808d8940 <sched_idletd>, arg=0x0,
frame=0xfffffe0838f93ac0) at /usr/src/sys/kern/kern_fork.c:995
#18 0xffffffff80c7599e in fork_trampoline ()
at /usr/src/sys/amd64/amd64/exception.S:606
#19 0x0000000000000000 in ?? ()
Current language: auto; currently minimal
(kgdb)
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