Date: Sat, 23 Apr 2005 12:28:03 -0500 From: Dan Nelson <dnelson@allantgroup.com> To: stable@freebsd.org Subject: panic: mutex tty owned at ../../../kern/kern_event.c:1487 Message-ID: <20050423172802.GB67026@dan.emsphone.com>
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Got the following on a 2004-04-21 -stable kernel:
panic messages:
---
panic: mutex tty owned at ../../../kern/kern_event.c:1487
cpuid = 0
KDB: stack backtrace:
kdb_backtrace(c07c93fb,0,c07aed2c,e97b799c,c3d05780) at kdb_backtrace+0x2e
panic(c07aed2c,c07a955e,c07acb39,5cf,c383c800) at panic+0x139
_mtx_assert(c383c910,2,c07acb39,5cf,c383c800) at _mtx_assert+0xf3
knote(c383c880,0,0) at knote+0x3d
ttwakeup(c383c800,c383c800,c4cc3e8c,1,c07aeb7a) at ttwakeup+0x89
ttyinput(d,c383c800,0,0,4d) at ttyinput+0x8d4
ttypend(c383c800,c383c800,e97b7a80,c05e9b80,c383c800) at ttypend+0x6c
ttnread(c383c800,c2803374,c327d700,e97b7aa4,c0596b3c) at ttnread+0x1b
filt_ttyread(c2803374,0,c07acb39,5dd,c383c800) at filt_ttyread+0x20
knote(c383c880,0,0) at knote+0xcc
ttwakeup(c383c800,c07b377e,32e,32d,c05aa530) at ttwakeup+0x89
ttioctl(c383c800,802c7415,c39864c0,3,c3d05780) at ttioctl+0xc6b
ttyioctl(c2bce300,802c7415,c39864c0,3,c3d05780) at ttyioctl+0x65
ptyioctl(c2bce300,802c7415,c39864c0,3,c3d05780) at ptyioctl+0x2a8
spec_ioctl(e97b7c00,e97b7cac,c06233e4,e97b7c00,0) at spec_ioctl+0x17c
spec_vnoperate(e97b7c00,0,c07b6fe6,30d,c080d640) at spec_vnoperate+0x18
vn_ioctl(c3968198,802c7415,c39864c0,c3a00a00,c3d05780) at vn_ioctl+0x204
ioctl(c3d05780,e97b7d14,c,431,3) at ioctl+0x448
syscall(2f,2f,2f,1,1) at syscall+0x2a0
Xint0x80_syscall() at Xint0x80_syscall+0x1f
--- syscall (54, FreeBSD ELF32, ioctl), eip = 0x2828533f, esp = 0xbfaed66c, ebp = 0xbfaed6c8 ---
boot() called on cpu#0
Uptime: 2d1h39m7s
Dumping 1023 MB
Compressing
64>22 128>46 192>71 256>95 320>119 384>143 448>167 512>191 576>215 640>233 704>249 768>264 832>273 896>296 960>320
Compressed to 346 MB
Dumpsize = 363098112
Dump starting at 442239488
64 128 192 256 320 384 448 512 576 640 704 768 832 896 960
---
#0 doadump () at pcpu.h:159
159 pcpu.h: No such file or directory.
in pcpu.h
doadump () at pcpu.h:159
159 in pcpu.h
#0 doadump () at pcpu.h:159
#1 0xc05b44aa in boot (howto=260) at ../../../kern/kern_shutdown.c:410
#2 0xc05b4884 in panic (fmt=0xc07aed2c "mutex %s owned at %s:%d") at ../../../kern/kern_shutdown.c:566
#3 0xc05aac23 in _mtx_assert (m=0xc383c910, what=0, file=0xc07acb39 "../../../kern/kern_event.c", line=1487) at ../../../kern/kern_mutex.c:753
#4 0xc0596aad in knote (list=0xc383c880, hint=0, islocked=0) at ../../../kern/kern_event.c:1487
#5 0xc05eb699 in ttwakeup (tp=0xc383c800) at ../../../kern/tty.c:2374
#6 0xc05e83b4 in ttyinput (c=13, tp=0xc383c800) at ../../../kern/tty.c:601
#7 0xc05ea23c in ttypend (tp=0xc383c800) at ../../../kern/tty.c:1658
#8 0xc05e9c5b in ttnread (tp=0xc383c800) at ../../../kern/tty.c:1352
#9 0xc05e9b80 in filt_ttyread (kn=0xc2803374, hint=0) at ../../../kern/tty.c:1313
#10 0xc0596b3c in knote (list=0xc383c880, hint=0, islocked=0) at ../../../kern/kern_event.c:1504
#11 0xc05eb699 in ttwakeup (tp=0xc383c800) at ../../../kern/tty.c:2374
#12 0xc05e937b in ttioctl (tp=0xc383c800, cmd=2150396949, data=0xc39864c0, flag=3) at ../../../kern/tty.c:1064
#13 0xc05ec6f5 in ttyioctl (dev=0x0, cmd=2150396949, data=0xc39864c0 "\006\t", flag=3, td=0x0) at ../../../kern/tty.c:2917
#14 0xc05ef0f8 in ptyioctl (dev=0xc2bce300, cmd=2150396949, data=0xc39864c0 "\006\t", flag=0, td=0x0) at ../../../kern/tty_pty.c:623
#15 0xc056da0c in spec_ioctl (ap=0xe97b7c00) at ../../../fs/specfs/spec_vnops.c:357
#16 0xc056d038 in spec_vnoperate (ap=0x0) at ../../../fs/specfs/spec_vnops.c:118
#17 0xc06233e4 in vn_ioctl (fp=0xc3968198, com=2150396949, data=0xc39864c0, active_cred=0xc3a00a00, td=0xc3d05780) at vnode_if.h:503
#18 0xc05dbae8 in ioctl (td=0xc3d05780, uap=0xe97b7d14) at file.h:257
#19 0xc07535e0 in syscall (frame={tf_fs = 47, tf_es = 47, tf_ds = 47, tf_edi = 1, tf_esi = 1, tf_ebp = -1079060792, tf_isp = -377782924, tf_ebx = 674260420, tf_edx = 140677888, tf_ecx = -2144570347, tf_eax = 54, tf_trapno = 12, tf_err = 2, tf_eip = 673731391, tf_cs = 31, tf_eflags = 582, tf_esp = -1079060884, tf_ss = 47}) at ../../../i386/i386/trap.c:1001
#20 0xc073e38f in Xint0x80_syscall () at ../../../i386/i386/exception.s:201
#21 0x0000002f in ?? ()
[garbage]
#48 0xc3585900 in ?? ()
#49 0xc05c6f90 in sched_switch (td=0x1, newtd=0x283065c4, flags=---Can't read userspace from dump, or kernel process---
) at ../../../kern/sched_4bsd.c:881
gdbcom:2: Error in sourced command file:
Previous frame inner to this frame (corrupt stack?)
(kgdb)
--
Dan Nelson
dnelson@allantgroup.com
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