I think I've run into this pre-UMA, so suspect it's not a UMA panic. I
could be wrong.
Robert N M Watson FreeBSD Core Team, TrustedBSD Project
[EMAIL PROTECTED] NAI Labs, Safeport Network Services
On Sat, 23 Mar 2002, Kris Kennaway wrote:
> I upgraded the bento package building cluster to a more recent
> -current to try and get packages building again (every other snapshot
> I've tried for the last week has either been broken or does not
> build). One of the client machines panicked after about an hour under
> load:
>
> The kernel and coredump are available for further debugging if needed.
>
> Kris
>
> panic messages:
> ---
> Fatal trap 12: page fault while in kernel mode
> fault virtual address = 0x1c
> fault code = supervisor read, page not present
> instruction pointer = 0x8:0xc0204d43
> stack pointer = 0x10:0xcdc39c60
> frame pointer = 0x10:0xcdc39c6c
> code segment = base 0x0, limit 0xfffff, type 0x1b
> = DPL 0, pres 1, def32 1, gran 1
> processor eflags = resume, IOPL = 0
> current process = 12 (swi6: tty:sio clock)
> trap number = 12
> panic: page fault
>
> syncing disks... panic: bdwrite: buffer is not busy
> Uptime: 1h0m1s
>
> 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
> 216 215 214 213 212 211 210 209 208 207 206 205 204 203 202 201 200 199 198 197 196
>195 194 193 192 191 190 189 188 187 186 185 184 183 182 181 180 179
> 178 177 176 175 174 173 172 171 170 169 168 167 166 165 164 163 162 161 160 159 158
>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
> 102 101 100 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 /local0/scratch/usr/src/sys/kern/kern_shutdown.c:505
> 505 /local0/scratch/usr/src/sys/kern/kern_shutdown.c: No such file or directory.
> (kgdb) bt
> #0 dumpsys () at /local0/scratch/usr/src/sys/kern/kern_shutdown.c:505
> #1 0xc020d180 in boot (howto=260) at
>/local0/scratch/usr/src/sys/kern/kern_shutdown.c:337
> #2 0xc020d61f in panic (fmt=0xc0378461 "bdwrite: buffer is not busy") at
>/local0/scratch/usr/src/sys/kern/kern_shutdown.c:647
> #3 0xc0242d88 in bdwrite (bp=0xc7741d18) at
>/local0/scratch/usr/src/sys/kern/vfs_bio.c:928
> #4 0xc02dc1ba in ffs_update (vp=0xcf1761b8, waitfor=0) at
>/local0/scratch/usr/src/sys/ufs/ffs/ffs_inode.c:120
> #5 0xc02e9806 in ffs_fsync (ap=0xcdc39b1c) at
>/local0/scratch/usr/src/sys/ufs/ffs/ffs_vnops.c:284
> #6 0xc02e7d8a in ffs_sync (mp=0xceb73000, waitfor=2, cred=0xc7691980,
>td=0xc03b4820) at vnode_if.h:441
> #7 0xc025030d in sync (td=0xc03b4820, uap=0x0) at
>/local0/scratch/usr/src/sys/kern/vfs_syscalls.c:674
> #8 0xc020cdcc in boot (howto=256) at
>/local0/scratch/usr/src/sys/kern/kern_shutdown.c:246
> #9 0xc020d61f in panic (fmt=0xc039681e "%s") at
>/local0/scratch/usr/src/sys/kern/kern_shutdown.c:647
> #10 0xc0334bd4 in trap_fatal (frame=0xcdc39c20, eva=28) at
>/local0/scratch/usr/src/sys/i386/i386/trap.c:841
> #11 0xc03348fd in trap_pfault (frame=0xcdc39c20, usermode=0, eva=28) at
>/local0/scratch/usr/src/sys/i386/i386/trap.c:755
> #12 0xc0334387 in trap (frame={tf_fs = -841940968, tf_es = 16, tf_ds = -842858480,
>tf_edi = 36, tf_esi = 0, tf_ebp = -842818452, tf_isp = -842818484,
> tf_ebx = -841047808, tf_edx = -841047712, tf_ecx = -841047806, tf_eax =
>-841048064, tf_trapno = 12, tf_err = 0, tf_eip = -1071624893, tf_cs = 8,
> tf_eflags = 65538, tf_esp = -853281024, tf_ss = -949504404}) at
>/local0/scratch/usr/src/sys/i386/i386/trap.c:426
> #13 0xc0204d43 in propagate_priority (td=0xcd23f700) at
>/local0/scratch/usr/src/sys/kern/kern_mutex.c:161
> #14 0xc02050c3 in _mtx_lock_sleep (m=0xc767b66c, opts=0, file=0x0, line=0) at
>/local0/scratch/usr/src/sys/kern/kern_mutex.c:389
> #15 0xc02ff746 in zone_timeout (zone=0xc767b5a0) at
>/local0/scratch/usr/src/sys/vm/uma_core.c:232
> #16 0xc030070f in zone_foreach (zfunc=0xc02ff6c8 <zone_timeout>) at
>/local0/scratch/usr/src/sys/vm/uma_core.c:1021
> #17 0xc02ff6a5 in uma_timeout (unused=0x0) at
>/local0/scratch/usr/src/sys/vm/uma_core.c:193
> #18 0xc02174af in softclock (dummy=0x0) at
>/local0/scratch/usr/src/sys/kern/kern_timeout.c:187
> #19 0xc01fe2b0 in ithread_loop (arg=0xcd261c80) at
>/local0/scratch/usr/src/sys/kern/kern_intr.c:533
> #20 0xc01fd506 in fork_exit (callout=0xc01fe114 <ithread_loop>, arg=0xcd261c80,
>frame=0xcdc39d48) at /local0/scratch/usr/src/sys/kern/kern_fork.c:796
> (kgdb)
>
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