Date: Tue, 26 Nov 2002 20:21:47 +0100 From: Aurelien Nephtali <aurelien.nephtali@wanadoo.fr> To: current@freebsd.org Subject: PANIC: "Most recently used by bus" Message-ID: <20021126192147.GB530@nebula.wanadoo.fr>
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Hi,
I've got a panic by unplugging my NIC then plugging it again and then doing
a dhclient <interface>. I've attached some informations about the panic.
-- Aur=E9lien
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Script started on Tue Nov 26 20:17:13 2002
=0D=1B[m=1B[27m=1B[Jnebula# =1B[K=1B[47C/sys/i386/compile/NEBULA=1B[71Dg=08=
gdb -k=0D=0D
GNU gdb 5.2.1 (FreeBSD)=0D
Copyright 2002 Free Software Foundation, Inc.=0D
GDB is free software, covered by the GNU General Public License, and you ar=
e=0D
welcome to change it and/or distribute copies of it under certain condition=
s.=0D
Type "show copying" to see the conditions.=0D
There is absolutely no warranty for GDB. Type "show warranty" for details.=
=0D
This GDB was configured as "i386-undermydesk-freebsd".=0D
(kgdb) symbol-file kernel.debug =0D
Reading symbols from kernel.debug...done.=0D
(kgdb) exec-file /boot/kernel/kernel=0D
(kgdb) core-file /var/crash/vmcore.0 =0D
panic: from debugger=0D
panic messages:=0D
---=0D
panic: Most recently used by bus=0D
=0D
panic: from debugger=0D
Uptime: 2h0m15s=0D
Dumping 123 MB=0D
ata0: resetting devices ..=0D
done=0D
16 32 48 64 80 96 112=0D
---=0D
#0 doadump () at ../../../kern/kern_shutdown.c:232=0D
232 dumping++;=0D
(kgdb) bt=0D
#0 doadump () at ../../../kern/kern_shutdown.c:232=0D
#1 0xc0216bfe in boot (howto=3D260) at ../../../kern/kern_shutdown.c:364=0D
#2 0xc0216e43 in panic () at ../../../kern/kern_shutdown.c:517=0D
#3 0xc013bed2 in db_panic () at ../../../ddb/db_command.c:450=0D
#4 0xc013be52 in db_command (last_cmdp=3D0xc039cee0, cmd_table=3D0x0, =0D
aux_cmd_tablep=3D0xc0397a0c, aux_cmd_tablep_end=3D0xc0397a10)=0D
at ../../../ddb/db_command.c:346=0D
#5 0xc013bf66 in db_command_loop () at ../../../ddb/db_command.c:472=0D
#6 0xc013ebfa in db_trap (type=3D3, code=3D0) at ../../../ddb/db_trap.c:72=
=0D
#7 0xc032eed2 in kdb_trap (type=3D3, code=3D0, regs=3D0xc9077910)=0D
at ../../../i386/i386/db_interface.c:166=0D
#8 0xc033fabf in trap (frame=3D=0D
{tf_fs =3D -1061945320, tf_es =3D -922288112, tf_ds =3D -1071644656, =
tf_edi =3D -1045057088, tf_esi =3D 256, tf_ebp =3D -922257060, tf_isp =3D -=
922257092, tf_ebx =3D 0, tf_edx =3D 0, tf_ecx =3D 3840, tf_eax =3D 18, tf_t=
rapno =3D 3, tf_err =3D 0, tf_eip =3D -1070403212, tf_cs =3D 8, tf_eflags =
=3D 658, tf_esp =3D -1070001757, tf_ss =3D -1070110374})=0D
at ../../../i386/i386/trap.c:603=0D
#9 0xc03306a8 in calltrap () at {standard input}:98=0D
#10 0xc0216e2b in panic (fmt=3D0x0) at ../../../kern/kern_shutdown.c:503=0D
#11 0xc0311c4d in mtrash_ctor (mem=3D0xc1820800, size=3D0, arg=3D0x0)=0D
at ../../../vm/uma_dbg.c:138=0D
#12 0xc0310667 in uma_zalloc_arg (zone=3D0xc0b4c3c0, udata=3D0x0, flags=3D0=
)=0D
at ../../../vm/uma_core.c:1358=0D
#13 0xc020b626 in malloc (size=3D6, type=3D0xc03c14e0, flags=3D0)=0D
---Type <return> to continue, or q <return> to quit---=0D
at ../../../kern/kern_malloc.c:182=0D
#14 0xc01f1b73 in exec_elf32_imgact (imgp=3D0xc9077b88) at imgact_elf.c:804=
=0D
#15 0xc01feae2 in kern_execve (td=3D0xc1b5b1c0, fname=3D---Can't read users=
pace from dump, or kernel process---=0D
=0D
)=0D
at ../../../kern/kern_exec.c:313=0D
#16 0xc01ff570 in execve (td=3D0x0, uap=3D0x0) at ../../../kern/kern_exec.c=
:694=0D
#17 0xc034039e in syscall (frame=3D=0D
{tf_fs =3D 47, tf_es =3D 47, tf_ds =3D 47, tf_edi =3D 135274340, tf_e=
si =3D 135274500, tf_ebp =3D -1077938104, tf_isp =3D -922256012, tf_ebx =3D=
0, tf_edx =3D 135274500, tf_ecx =3D 135274500, tf_eax =3D 59, tf_trapno =
=3D 12, tf_err =3D 2, tf_eip =3D 134723367, tf_cs =3D 31, tf_eflags =3D 646=
, tf_esp =3D -1077938132, tf_ss =3D 47})=0D
at ../../../i386/i386/trap.c:1033=0D
#18 0xc03306fd in Xint0x80_syscall () at {standard input}:140=0D
---Can't read userspace from dump, or kernel process---=0D
=0D
(kgdb) frame 11=0D
#11 0xc0311c4d in mtrash_ctor (mem=3D0xc1820800, size=3D0, arg=3D0x0)=0D
at ../../../vm/uma_dbg.c:138=0D
138 panic("Most recently used by %s\n", (*ksp =3D=3D NULL)?=0D
(kgdb) list=0D
133 =0D
134 for (p =3D mem; cnt > 0; cnt--, p++)=0D
135 if (*p !=3D uma_junk) {=0D
136 printf("Memory modified after free %p(%d)\n",=0D
137 mem, size);=0D
138 panic("Most recently used by %s\n", (*ksp =3D=3D NULL)?=0D
139 "none" : (*ksp)->ks_shortdesc);=0D
140 }=0D
141 }=0D
142 =0D
(kgdb) p p=0D
$1 =3D (u_int32_t *) 0x0=0D
(kgdb) p uma_junk=0D
$2 =3D 3735929054=0D
(kgdb) quit=0D
=0D=1B[m=1B[27m=1B[Jnebula# =1B[K=1B[47C/sys/i386/compile/NEBULA=1B[71De=08=
exit=0D=0D
Script done on Tue Nov 26 20:18:30 2002
=0D
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