[Bug 203332] Fatal trap 12: rctl_enforce() at rctl_enforce

Fri Sep 25 11:28:57 UTC 2015

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=203332

            Bug ID: 203332
           Summary: Fatal trap 12: rctl_enforce() at rctl_enforce
           Product: Base System
           Version: 10.2-STABLE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: olgeni at FreeBSD.org

I got this rctl-related panic, with no rtcl rule loaded at the time.

Userland and kernel at r287568.

Fatal trap 12: page fault while in kernel mode
cpuid = 3; apic id = 03
fault virtual address    = 0xa8
fault code        = supervisor read data, page not present
instruction pointer    = 0x20:0xffffffff8095963c
stack pointer            = 0x28:0xfffffe01af1c17c0
frame pointer            = 0x28:0xfffffe01af1c1860
code segment        = base 0x0, limit 0xfffff, type 0x1b
            = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags    = interrupt enabled, resume, IOPL = 0
current process        = 826 (beam.smp)
trap number        = 12
panic: page fault
cpuid = 3
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe01af1c12a0
kdb_backtrace() at kdb_backtrace+0x39/frame 0xfffffe01af1c1350
vpanic() at vpanic+0x126/frame 0xfffffe01af1c1390
panic() at panic+0x43/frame 0xfffffe01af1c13f0
trap_fatal() at trap_fatal+0x36b/frame 0xfffffe01af1c1450
trap_pfault() at trap_pfault+0x2ed/frame 0xfffffe01af1c14f0
trap() at trap+0x47a/frame 0xfffffe01af1c1700
calltrap() at calltrap+0x8/frame 0xfffffe01af1c1700
--- trap 0xc, rip = 0xffffffff8095963c, rsp = 0xfffffe01af1c17c0, rbp =
0xfffffe01af1c1860 ---
rctl_enforce() at rctl_enforce+0x3c/frame 0xfffffe01af1c1860
racct_proc_fork_done() at racct_proc_fork_done+0xda/frame 0xfffffe01af1c1890
fork1() at fork1+0x1f57/frame 0xfffffe01af1c1970
sys_vfork() at sys_vfork+0x1f/frame 0xfffffe01af1c1990
amd64_syscall() at amd64_syscall+0x357/frame 0xfffffe01af1c1ab0
Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe01af1c1ab0
--- syscall (66, FreeBSD ELF64, sys_vfork), rip = 0x8017f3a2d, rsp =
0x7fffdf32c6c0, rbp = 0x7fffdf32c800 ---
Uptime: 4h0m2s
Dumping 1068 out of 6115 MB:..2%..11%..21%..32%..41%..51%..62%..71%..81%..92%

Reading symbols from /boot/kernel/nullfs.ko.symbols...done.
Loaded symbols for /boot/kernel/nullfs.ko.symbols
Reading symbols from /boot/kernel/unionfs.ko.symbols...done.
Loaded symbols for /boot/kernel/unionfs.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_eli.ko.symbols...done.
Loaded symbols for /boot/kernel/geom_eli.ko.symbols
Reading symbols from /boot/kernel/geom_mirror.ko.symbols...done.
Loaded symbols for /boot/kernel/geom_mirror.ko.symbols
Reading symbols from /boot/kernel/geom_uzip.ko.symbols...done.
Loaded symbols for /boot/kernel/geom_uzip.ko.symbols
Reading symbols from /boot/kernel/if_tap.ko.symbols...done.
Loaded symbols for /boot/kernel/if_tap.ko.symbols
Reading symbols from /boot/kernel/pf.ko.symbols...done.
Loaded symbols for /boot/kernel/pf.ko.symbols
Reading symbols from /boot/kernel/bridgestp.ko.symbols...done.
Loaded symbols for /boot/kernel/bridgestp.ko.symbols
Reading symbols from /boot/kernel/if_bridge.ko.symbols...done.
Loaded symbols for /boot/kernel/if_bridge.ko.symbols
Reading symbols from /boot/kernel/ipmi.ko.symbols...done.
Loaded symbols for /boot/kernel/ipmi.ko.symbols
Reading symbols from /boot/kernel/smbus.ko.symbols...done.
Loaded symbols for /boot/kernel/smbus.ko.symbols
Reading symbols from /boot/kernel/nmdm.ko.symbols...done.
Loaded symbols for /boot/kernel/nmdm.ko.symbols
Reading symbols from /boot/kernel/fdescfs.ko.symbols...done.
Loaded symbols for /boot/kernel/fdescfs.ko.symbols
Reading symbols from /boot/modules/vboxguest.ko...done.
Loaded symbols for /boot/modules/vboxguest.ko
Reading symbols from /boot/kernel/linux.ko.symbols...done.
Loaded symbols for /boot/kernel/linux.ko.symbols
Reading symbols from /boot/kernel/blank_saver.ko.symbols...done.
Loaded symbols for /boot/kernel/blank_saver.ko.symbols
#0  doadump (textdump=1) at pcpu.h:219
219    pcpu.h: No such file or directory.
    in pcpu.h
(kgdb) #0  doadump (textdump=1) at pcpu.h:219
#1  0xffffffff80962487 in kern_reboot (howto=260)
    at /usr/storage/OS/src/10/src/sys/kern/kern_shutdown.c:451
#2  0xffffffff80962885 in vpanic (fmt=<value optimized out>, 
    ap=<value optimized out>)
    at /usr/storage/OS/src/10/src/sys/kern/kern_shutdown.c:758
#3  0xffffffff80962713 in panic (fmt=0x0)
    at /usr/storage/OS/src/10/src/sys/kern/kern_shutdown.c:687
#4  0xffffffff80d973fb in trap_fatal (frame=<value optimized out>, 
    eva=<value optimized out>)
    at /usr/storage/OS/src/10/src/sys/amd64/amd64/trap.c:851
#5  0xffffffff80d976fd in trap_pfault (frame=0xfffffe01af1c1710, 
    usermode=<value optimized out>)
    at /usr/storage/OS/src/10/src/sys/amd64/amd64/trap.c:674
#6  0xffffffff80d96d9a in trap (frame=0xfffffe01af1c1710)
    at /usr/storage/OS/src/10/src/sys/amd64/amd64/trap.c:440
#7  0xffffffff80d7c892 in calltrap ()
    at /usr/storage/OS/src/10/src/sys/amd64/amd64/exception.S:236
#8  0xffffffff8095963c in rctl_enforce (p=0xfffff80059e6d4e8, resource=6, 
    amount=0) at /usr/storage/OS/src/10/src/sys/kern/kern_rctl.c:350
#9  0xffffffff809581da in racct_proc_fork_done (child=0xfffff80059e6d4e8)
    at /usr/storage/OS/src/10/src/sys/kern/kern_racct.c:969
#10 0xffffffff8092ae07 in fork1 (td=<value optimized out>, 
    flags=<value optimized out>, pages=Cannot access memory at address 0x4
)
    at /usr/storage/OS/src/10/src/sys/kern/kern_fork.c:952
#11 0xffffffff8092ae9f in sys_vfork (td=0xfffff8008947b940, 
    uap=<value optimized out>)
    at /usr/storage/OS/src/10/src/sys/kern/kern_fork.c:152
#12 0xffffffff80d97d17 in amd64_syscall (td=0xfffff8008947b940, traced=0)
    at subr_syscall.c:134
#13 0xffffffff80d7cb7b in Xfast_syscall ()
    at /usr/storage/OS/src/10/src/sys/amd64/amd64/exception.S:396
#14 0x00000008017f3a2d in ?? ()
Previous frame inner to this frame (corrupt stack?)
Current language:  auto; currently minimal
(kgdb)

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