svn commit: r285125 - in head/sys: kern sys

[Adrian Chadd]

Bad mjg!

this happend whilst doing 'sysctl -vmstat 1' in one window, 'top' in
another window, and 'kldunload uhci' as root:

Unread portion of the kernel message buffer:
uhci5: detached
panic: sleepq_add: td 0xc75d06a0 to sleep on wchan 0xc0b3e8e4 with
sleeping prohibited
cpuid = 1
KDB: stack backtrace:
db_trace_self_wrapper(c09f8c12,20676e69,686f7270,74696269,a6465,...)
at db_trace_self_wrapper+0x2a/frame 0xeaa61838
kdb_backtrace(c0a3f06b,1,c09fa9f1,eaa61920,1,...) at
kdb_backtrace+0x2d/frame 0xeaa618a0
vpanic(c09fa9f1,eaa61920,c09fa9f1,eaa61920,c75d06a0,...) at
vpanic+0x117/frame 0xeaa618d4
kassert_panic(c09fa9f1,c09faa29,c75d06a0,c0b3e8e4,c06f40cc,...) at
kassert_panic+0x15c/frame 0xeaa61914
sleepq_add(c0b3e8e4,0,c09f2d20,3,0,...) at sleepq_add+0x2eb/frame 0xeaa61940
_sx_xlock_hard(c0b3e8e4,c75d06a0,0,c09f2d35,19b,...) at
_sx_xlock_hard+0x6cb/frame 0xeaa619ec
_sx_xlock(c0b3e8e4,0,c09f2d35,19b,c0b3e8e4,...) at
_sx_xlock+0xe1/frame 0xeaa61a1c
_rm_rlock(c0b3e8cc,eaa61ad0,0,aa,0,...) at _rm_rlock+0x1f0/frame 0xeaa61a4c
_rm_rlock_debug(c0b3e8cc,eaa61ad0,0,c09f4c54,aa,...) at
_rm_rlock_debug+0x11d/frame 0xeaa61a78
sysctl_root_handler_locked(0,eaa61b28,eaa61ad0,0,eaa61b28,...) at
sysctl_root_handler_locked+0x104/frame 0xeaa61aa8
sysctl_root(eaa61b28,28,2,c75f5720,eaa61be8,...) at
sysctl_root+0x1b1/frame 0xeaa61b08
userland_sysctl(c75d06a0,eaa61bac,2,28803040,bfbfecf8,...) at
userland_sysctl+0x172/frame 0xeaa61b70
sys___sysctl(c75d06a0,eaa61ca8,c09ebfdf,4,eaa61c4c,...) at
sys___sysctl+0x98/frame 0xeaa61c18
syscall(eaa61ce8) at syscall+0x33e/frame 0xeaa61cdc
Xint0x80_syscall() at Xint0x80_syscall+0x2c/frame 0xeaa61cdc
--- syscall (202, FreeBSD ELF32, sys___sysctl), eip = 0x281b4547, esp
= 0xbfbfeca0, ebp = 0xbfbfeccc ---
KDB: enter: panic

Reading symbols from /boot/kernel/if_tap.ko.symbols...done.
Loaded symbols for /boot/kernel/if_tap.ko.symbols
Reading symbols from /boot/kernel/if_tun.ko.symbols...done.
Loaded symbols for /boot/kernel/if_tun.ko.symbols
Reading symbols from /boot/kernel/if_em.ko.symbols...done.
Loaded symbols for /boot/kernel/if_em.ko.symbols
Reading symbols from /boot/kernel/sound.ko.symbols...done.
Loaded symbols for /boot/kernel/sound.ko.symbols
Reading symbols from /boot/kernel/snd_hda.ko.symbols...done.
Loaded symbols for /boot/kernel/snd_hda.ko.symbols
Reading symbols from /boot/kernel/usb.ko.symbols...done.
Loaded symbols for /boot/kernel/usb.ko.symbols
Reading symbols from /boot/kernel/ukbd.ko.symbols...done.
Loaded symbols for /boot/kernel/ukbd.ko.symbols
Reading symbols from /boot/kernel/umass.ko.symbols...done.
Loaded symbols for /boot/kernel/umass.ko.symbols
Reading symbols from /boot/kernel/agp.ko.symbols...done.
Loaded symbols for /boot/kernel/agp.ko.symbols
Reading symbols from /boot/kernel/acpi_video.ko.symbols...done.
Loaded symbols for /boot/kernel/acpi_video.ko.symbols
Reading symbols from /boot/kernel/firmware.ko.symbols...done.
Loaded symbols for /boot/kernel/firmware.ko.symbols
Reading symbols from /boot/kernel/acpi_ibm.ko.symbols...done.
Loaded symbols for /boot/kernel/acpi_ibm.ko.symbols
Reading symbols from /boot/kernel/sem.ko.symbols...done.
Loaded symbols for /boot/kernel/sem.ko.symbols
Reading symbols from /boot/kernel/cpufreq.ko.symbols...done.
Loaded symbols for /boot/kernel/cpufreq.ko.symbols
Reading symbols from /boot/kernel/ata.ko.symbols...done.
Loaded symbols for /boot/kernel/ata.ko.symbols
Reading symbols from /boot/kernel/atapci.ko.symbols...done.
Loaded symbols for /boot/kernel/atapci.ko.symbols
Reading symbols from /boot/kernel/ahci.ko.symbols...done.
Loaded symbols for /boot/kernel/ahci.ko.symbols
Reading symbols from /boot/kernel/uhci.ko.symbols...done.
Loaded symbols for /boot/kernel/uhci.ko.symbols
Reading symbols from /boot/kernel/ehci.ko.symbols...done.
Loaded symbols for /boot/kernel/ehci.ko.symbols
Reading symbols from /boot/kernel/pccard.ko.symbols...done.
Loaded symbols for /boot/kernel/pccard.ko.symbols
Reading symbols from /boot/kernel/cbb.ko.symbols...done.
Loaded symbols for /boot/kernel/cbb.ko.symbols
Reading symbols from /boot/kernel/exca.ko.symbols...done.
Loaded symbols for /boot/kernel/exca.ko.symbols
Reading symbols from /boot/kernel/cardbus.ko.symbols...done.
Loaded symbols for /boot/kernel/cardbus.ko.symbols
Reading symbols from /boot/kernel/wlan.ko.symbols...done.
Loaded symbols for /boot/kernel/wlan.ko.symbols
Reading symbols from /boot/kernel/wlan_ccmp.ko.symbols...done.
Loaded symbols for /boot/kernel/wlan_ccmp.ko.symbols
Reading symbols from /boot/kernel/wlan_tkip.ko.symbols...done.
Loaded symbols for /boot/kernel/wlan_tkip.ko.symbols
Reading symbols from /boot/kernel/wlan_wep.ko.symbols...done.
Loaded symbols for /boot/kernel/wlan_wep.ko.symbols
Reading symbols from /boot/kernel/wlan_amrr.ko.symbols...done.
Loaded symbols for /boot/kernel/wlan_amrr.ko.symbols
Reading symbols from /boot/kernel/wlan_xauth.ko.symbols...done.
Loaded symbols for /boot/kernel/wlan_xauth.ko.symbols
Reading symbols from /boot/kernel/cuse.ko.symbols...done.
Loaded symbols for /boot/kernel/cuse.ko.symbols
Reading symbols from /boot/kernel/ng_ubt.ko.symbols...done.
Loaded symbols for /boot/kernel/ng_ubt.ko.symbols
Reading symbols from /boot/kernel/netgraph.ko.symbols...done.
Loaded symbols for /boot/kernel/netgraph.ko.symbols
Reading symbols from /boot/kernel/ng_hci.ko.symbols...done.
Loaded symbols for /boot/kernel/ng_hci.ko.symbols
Reading symbols from /boot/kernel/ng_bluetooth.ko.symbols...done.
Loaded symbols for /boot/kernel/ng_bluetooth.ko.symbols
Reading symbols from /boot/kernel/ng_l2cap.ko.symbols...done.
Loaded symbols for /boot/kernel/ng_l2cap.ko.symbols
Reading symbols from /boot/kernel/ng_btsocket.ko.symbols...done.
Loaded symbols for /boot/kernel/ng_btsocket.ko.symbols
Reading symbols from /boot/kernel/ng_socket.ko.symbols...done.
Loaded symbols for /boot/kernel/ng_socket.ko.symbols
Reading symbols from /boot/kernel/ipfw.ko.symbols...done.
Loaded symbols for /boot/kernel/ipfw.ko.symbols
Reading symbols from /boot/kernel/i915kms.ko.symbols...done.
Loaded symbols for /boot/kernel/i915kms.ko.symbols
Reading symbols from /boot/kernel/drm2.ko.symbols...done.
Loaded symbols for /boot/kernel/drm2.ko.symbols
Reading symbols from /boot/kernel/iicbus.ko.symbols...done.
Loaded symbols for /boot/kernel/iicbus.ko.symbols
Reading symbols from /boot/kernel/iic.ko.symbols...done.
Loaded symbols for /boot/kernel/iic.ko.symbols
Reading symbols from /boot/kernel/iicbb.ko.symbols...done.
Loaded symbols for /boot/kernel/iicbb.ko.symbols
Reading symbols from /boot/kernel/wlan_rssadapt.ko.symbols...done.
Loaded symbols for /boot/kernel/wlan_rssadapt.ko.symbols
Reading symbols from /boot/kernel/if_ath.ko.symbols...done.
Loaded symbols for /boot/kernel/if_ath.ko.symbols
Reading symbols from /boot/kernel/if_ath_pci.ko.symbols...done.
Loaded symbols for /boot/kernel/if_ath_pci.ko.symbols
Reading symbols from /boot/kernel/if_iwn.ko.symbols...done.
Loaded symbols for /boot/kernel/if_iwn.ko.symbols
Reading symbols from /boot/kernel/if_wpi.ko.symbols...done.
Loaded symbols for /boot/kernel/if_wpi.ko.symbols
#0  doadump (textdump=-1061434632) at pcpu.h:205
205    pcpu.h: No such file or directory.
    in pcpu.h
(kgdb) bt
#0  doadump (textdump=-1061434632) at pcpu.h:205
#1  0xc050bc1d in db_fncall (dummy1=-358214152, dummy2=false,
dummy3=-960040368, dummy4=0xeaa615e4 "'>S�����") at
/usr/home/adrian/work/freebsd/head/src/sys/ddb/db_command.c:568
#2  0xc050b9f6 in db_command (cmd_table=<value optimized out>) at
/usr/home/adrian/work/freebsd/head/src/sys/ddb/db_command.c:440
#3  0xc050b640 in db_command_loop () at
/usr/home/adrian/work/freebsd/head/src/sys/ddb/db_command.c:493
#4  0xc050e086 in db_trap (code=<value optimized out>) at
/usr/home/adrian/work/freebsd/head/src/sys/ddb/db_main.c:251
#5  0xc06e8387 in kdb_trap (tf=<value optimized out>) at
/usr/home/adrian/work/freebsd/head/src/sys/kern/subr_kdb.c:654
#6  0xc0969de2 in trap (frame=<value optimized out>) at
/usr/home/adrian/work/freebsd/head/src/sys/i386/i386/trap.c:693
#7  0xc0955bb7 in calltrap () at
/usr/home/adrian/work/freebsd/head/src/sys/i386/i386/exception.s:172
#8  0xc06e7c1d in kdb_enter (why=0xc09f3c1c "panic", msg=<value
optimized out>) at cpufunc.h:60
#9  0xc06a8967 in vpanic (fmt=<value optimized out>, ap=<value
optimized out>) at
/usr/home/adrian/work/freebsd/head/src/sys/kern/kern_shutdown.c:737
#10 0xc06a882c in kassert_panic (fmt=<value optimized out>) at
/usr/home/adrian/work/freebsd/head/src/sys/kern/kern_shutdown.c:634
#11 0xc06f449b in sleepq_add (wchan=0xc0b3e8e4, wmesg=<value optimized
out>, flags=<value optimized out>, queue=<value optimized out>) at
/usr/home/adrian/work/freebsd/head/src/sys/kern/subr_sleepqueue.c:308
#12 0xc06b167b in _sx_xlock_hard (sx=0xc0b3e8e4, tid=<value optimized
out>, opts=<value optimized out>, file=0x0, line=18) at
/usr/home/adrian/work/freebsd/head/src/sys/kern/kern_sx.c:697
#13 0xc06b0841 in _sx_xlock (sx=0xc0b3e8e4, opts=<value optimized
out>, file=0xc09f2d35
"/usr/home/adrian/work/freebsd/head/src/sys/kern/kern_rmlock.c",
line=411) at sx.h:154
#14 0xc06a4510 in _rm_rlock (rm=0xc0b3e8cc, tracker=0xeaa61ad0,
trylock=<value optimized out>) at
/usr/home/adrian/work/freebsd/head/src/sys/kern/kern_rmlock.c:411
#15 0xc06a4e2d in _rm_rlock_debug (rm=0xc0b3e8cc, tracker=0xeaa61ad0,
trylock=0) at /usr/home/adrian/work/freebsd/head/src/sys/kern/kern_rmlock.c:665
#16 0xc06b5da4 in sysctl_root_handler_locked (oid=0xc0a6ee20,
arg1=<value optimized out>, arg2=<value optimized out>, req=<value
optimized out>, tracker=0xeaa61ad0) at
/usr/home/adrian/work/freebsd/head/src/sys/kern/kern_sysctl.c:170
#17 0xc06b5531 in sysctl_root (arg1=<value optimized out>, arg2=<value
optimized out>) at
/usr/home/adrian/work/freebsd/head/src/sys/kern/kern_sysctl.c:1692
#18 0xc06b5ac2 in userland_sysctl (td=<value optimized out>,
name=<value optimized out>, namelen=2, old=<value optimized out>,
oldlenp=<value optimized out>, inkernel=<value optimized out>,
new=<value optimized out>, newlen=<value optimized out>, retval=0x12,
    flags=<value optimized out>) at
/usr/home/adrian/work/freebsd/head/src/sys/kern/kern_sysctl.c:1797
#19 0xc06b5908 in sys___sysctl (uap=0xeaa61ca8) at
/usr/home/adrian/work/freebsd/head/src/sys/kern/kern_sysctl.c:1724
#20 0xc096aaee in syscall (frame=<value optimized out>) at subr_syscall.c:133
#21 0xc0955c5c in Xint0x80_syscall () at
/usr/home/adrian/work/freebsd/head/src/sys/i386/i386/exception.s:278
#22 0x00000033 in ?? ()
Previous frame inner to this frame (corrupt stack?)
Current language:  auto; currently minimal