Date: Sun, 17 Mar 2002 12:49:58 -0800 From: Kris Kennaway <kris@obsecurity.org> To: current@FreeBSD.org Cc: fs@FreeBSD.org Subject: panic: bwrite: buffer is not busy??? Message-ID: <20020317124958.A34008@xor.obsecurity.org>
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I tried upgrading the bento cluster to 5.x so I can actually get 5.0
packages built (eaccess problems), and 5 of them blew up in about 10
minutes with this (I think this is going to be an .. uh .. interesting
test of the stability of 5.0-CURRENT):
IdlePTD at phsyical address 0x004a6000
initial pcb at physical address 0x003e9040
panicstr: bwrite: buffer is not busy???
panic messages:
---
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x58
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc0204b92
stack pointer = 0x10:0xcf0fac2c
frame pointer = 0x10:0xcf0fac34
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = resume, IOPL = 0
current process = 10095 (umount)
trap number = 12
panic: page fault
syncing disks... panic: bwrite: buffer is not busy???
Uptime: 5m52s
dumping to dev ad0b, offset 1575424
dump ata0: resetting devices .. done
254 253 252 251 250 249 248 247 246 245 244 243 242 241 240 239 238 237 236 235 234 233 232 231 230 229
228 227 226 225 224 223 222 221 220 219 218 217 216 215 214 213 212 211 210 209 208 207 206 205 204 20
3 202 201 200 199 198 197 196 195 194 193 192 191 190 189 188 187 186 185 184 183 182 181 180 179 178 1
77 176 175 174 173 172 171 170 169 168 167 166 165 164 163 162 161 160 159 158 157 156 155 154 153 152
151 150 149 148 147 146 145 144 143 142 141 140 139 138 137 136 135 134 133 132 131 130 129 128 127 126
125 124 123 122 121 120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 105 104 103 102 101 10
0 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66
65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
---
#0 dumpsys () at ../../../kern/kern_shutdown.c:505
505 ../../../kern/kern_shutdown.c: No such file or directory.
(kgdb) bt
#0 dumpsys () at ../../../kern/kern_shutdown.c:505
#1 0xc020cd48 in boot (howto=260) at ../../../kern/kern_shutdown.c:337
#2 0xc020d1e7 in panic (fmt=0xc0375b4b "bwrite: buffer is not busy???")
at ../../../kern/kern_shutdown.c:647
#3 0xc02425e3 in bwrite (bp=0xc7740920) at ../../../kern/vfs_bio.c:747
#4 0xc02438da in vfs_bio_awrite (bp=0xc7740920) at ../../../kern/vfs_bio.c:1604
#5 0xc01e453c in spec_fsync (ap=0xcf0faae8) at ../../../fs/specfs/spec_vnops.c:403
#6 0xc01e40f9 in spec_vnoperate (ap=0xcf0faae8) at ../../../fs/specfs/spec_vnops.c:121
#7 0xc02e7420 in ffs_sync (mp=0xc25ca600, waitfor=2, cred=0xc0e40980, td=0xc03b1de0)
at vnode_if.h:441
#8 0xc024fb95 in sync (td=0xc03b1de0, uap=0x0) at ../../../kern/vfs_syscalls.c:669
#9 0xc020c994 in boot (howto=256) at ../../../kern/kern_shutdown.c:246
#10 0xc020d1e7 in panic (fmt=0xc0393e1e "%s") at ../../../kern/kern_shutdown.c:647
#11 0xc03324a0 in trap_fatal (frame=0xcf0fabec, eva=88) at ../../../i386/i386/trap.c:851
#12 0xc03321c9 in trap_pfault (frame=0xcf0fabec, usermode=0, eva=88) at ../../../i386/i386/trap.c:765
#13 0xc0331c53 in trap (frame={tf_fs = -822542312, tf_es = -821100528, tf_ds = -1071382512,
tf_edi = 4, tf_esi = -1023860940, tf_ebp = -821056460, tf_isp = -821056488,
tf_ebx = -822490624, tf_edx = 0, tf_ecx = 2, tf_eax = 2, tf_trapno = 12, tf_err = 0,
tf_eip = -1071625326, tf_cs = 8, tf_eflags = 65606, tf_esp = -1023860992, tf_ss = -822498560})
at ../../../i386/i386/trap.c:433
#14 0xc0204b92 in _mtx_lock_sleep (m=0xc2f91f34, opts=0, file=0x0, line=0)
at ../../../kern/kern_mutex.c:370
#15 0xc024f55c in checkdirs (olddp=0xcf1814c0, newdp=0xcf1815a0) at ../../../kern/vfs_syscalls.c:457
#16 0xc024f87b in dounmount (mp=0xc2e20c00, flags=524288, td=0xcef9ca00)
at ../../../kern/vfs_syscalls.c:583
#17 0xc024f73e in unmount (td=0xcef9ca00, uap=0xcf0fad20) at ../../../kern/vfs_syscalls.c:543
#18 0xc0332770 in syscall (frame={tf_fs = 47, tf_es = 47, tf_ds = 47, tf_edi = 134809160,
tf_esi = 134914149, tf_ebp = -1077938936, tf_isp = -821056140, tf_ebx = 134914150, tf_edx = 0,
tf_ecx = -1077937306, tf_eax = 22, tf_trapno = 12, tf_err = 2, tf_eip = 134523171, tf_cs = 31,
tf_eflags = 643, tf_esp = -1077939044, tf_ss = 47}) at ../../../i386/i386/trap.c:1049
#19 0xc0323dad in syscall_with_err_pushed ()
Kris
P.S. Yes, I'm only swapping onto a device once this time :-)
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