panic truss'ing linux ls

[qhwt at myrealbox.com]

Hello.

How to reproduce:

- install linux_base-8-8.0_1 from ports
- mount /proc, because truss needs it
- truss /compat/linux/bin/ls -l

`/compat/linux/bin/ls -l' without truss dies with signal 12, not a panic. Maybe
truss'ing on a linux process is not a good thing?

Traceback:

Script started on Sat Nov  1 01:48:09 2003
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This GDB was configured as "i386-unknown-freebsd"...Deprecated bfd_read called at /home/source/dragonfly/src/gnu/usr.bin/binutils/gdb/../../../../contrib/gdb/gdb/dbxread.c line 2627 in elfstab_build_psymtabs
Deprecated bfd_read called at /home/source/dragonfly/src/gnu/usr.bin/binutils/gdb/../../../../contrib/gdb/gdb/dbxread.c line 933 in fill_symbuf

1 cpu [ff800000,32768]
IdlePTD at phsyical address 0x00452000
PCB EIP=c018a3fe ESP=ce601864 EBP=ce601870
initial pcb at physical address 0x002b8f00
panicstr: page fault
panic messages:
---
dmesg: kvm_read:
---

cannot read proc pointer at c0ed51f0

(kgdb) bt
#0  dumpsys () at /home/source/dragonfly/src/sys/kern/kern_shutdown.c:499
#1  0xc018a1ec in boot (howto=256) at /home/source/dragonfly/src/sys/kern/kern_shutdown.c:332
#2  0xc018a630 in poweroff_wait (junk=0xc02892aa, howto=-1071084402)
    at /home/source/dragonfly/src/sys/kern/kern_shutdown.c:611
#3  0xc0237603 in trap_fatal (frame=0xce601938, eva=120)
    at /home/source/dragonfly/src/sys/i386/i386/trap.c:1116
#4  0xc0237209 in trap_pfault (frame=0xce601938, usermode=0, eva=120)
    at /home/source/dragonfly/src/sys/i386/i386/trap.c:1005
#5  0xc0236ea0 in trap (frame={tf_fs = -841744360, tf_es = -832569328, tf_ds = -841678832,
      tf_edi = -832562668, tf_esi = 3, tf_ebp = -832562808, tf_isp = -832562844,
      tf_ebx = -836177984, tf_edx = 0, tf_ecx = -837513336, tf_eax = 0, tf_trapno = 12,
      tf_err = 0, tf_eip = -1072214485, tf_cs = 8, tf_eflags = 66182, tf_esp = 0,
      tf_ss = -837517312}) at /home/source/dragonfly/src/sys/i386/i386/trap.c:594
#6  0xc0174e2b in elf_putfiles (p=0xcdd5fc40, dst=0xce148000, off=0xce601a14)
    at /home/source/dragonfly/src/sys/kern/imgact_elf.c:1256
#7  0xc0174bb3 in elf_puthdr (p=0xcdd5fc40, dst=0xce148000, off=0xce601a14, status=0xc7c91d10,
    fpregset=0xc7c91d78, psinfo=0xc7c91e28, numsegs=10)
    at /home/source/dragonfly/src/sys/kern/imgact_elf.c:1124
#8  0xc0174aef in elf_corehdr (p=0xcdd5fc40, fp=0xc0ee5910, cred=0xc1087f20, numsegs=10,
    hdr=0xce148000, hdrsize=8192) at /home/source/dragonfly/src/sys/kern/imgact_elf.c:1084
#9  0xc01747b5 in generic_elf_coredump (p=0xcdd5fc40, fp=0xc0ee5910, limit=9223372036854775807)
    at /home/source/dragonfly/src/sys/kern/imgact_elf.c:866
#10 0xc01746a1 in elf_coredump (p=0xcdd5fc40, vp=0xce440e40, limit=9223372036854775807)
    at /home/source/dragonfly/src/sys/kern/imgact_elf.c:817
#11 0xc018c4e7 in coredump (p=0xcdd5fc40) at /home/source/dragonfly/src/sys/kern/kern_sig.c:1475
#12 0xc018bf22 in sigexit (p=0xcdd5fc40, sig=12)
    at /home/source/dragonfly/src/sys/kern/kern_sig.c:1306
#13 0xc018bcc0 in postsig (sig=12) at /home/source/dragonfly/src/sys/kern/kern_sig.c:1222
#14 0xc0236a0b in userret (p=0xcdd5fc40, frame=0xce601d48, oticks=0)
    at /home/source/dragonfly/src/sys/i386/i386/trap.c:278
#15 0xc0237a1a in syscall2 (frame={tf_fs = 47, tf_es = 47, tf_ds = 47, tf_edi = 0, tf_esi = 0,
      tf_ebp = -1077937008, tf_isp = -832561804, tf_ebx = 134567056, tf_edx = 1143, tf_ecx = 11,
      tf_eax = 0, tf_trapno = 7, tf_err = 2, tf_eip = 671798508, tf_cs = 31, tf_eflags = 658,
      tf_esp = -1077937100, tf_ss = 47}) at /home/source/dragonfly/src/sys/i386/i386/trap.c:1370
#16 0xc0229b6a in Xint0x80_syscall ()
cannot read proc at 0
(kgdb) fram 6
#6  0xc0174e2b in elf_putfiles (p=0xcdd5fc40, dst=0xce148000, off=0xce601a14)
    at /home/source/dragonfly/src/sys/kern/imgact_elf.c:1256
1256				cfi->cfi_fh.fh_fsid = vp->v_mount->mnt_stat.f_fsid;
(kgdb) list
1251				cfi = (struct ckpt_fileinfo *)((char *)dst + *off);
1252				cfi->cfi_index = i;
1253				cfi->cfi_flags = fp->f_flag;
1254				cfi->cfi_offset = fp->f_offset;
1255				vp = (struct vnode *)fp->f_data;
1256				cfi->cfi_fh.fh_fsid = vp->v_mount->mnt_stat.f_fsid;
1257				error = VFS_VPTOFH(vp, &cfi->cfi_fh.fh_fid);
1258			}
1259			*off += sizeof(struct ckpt_fileinfo);
1260		}

(kgdb) info locals
off = (int *) 0xce601a14
i = 3
cfh = (struct ckpt_filehdr *) 0xce148f60
cfi = (struct ckpt_fileinfo *) 0x0
fp = (struct file *) 0x0
vp = (struct vnode *) 0x0
(kgdb) up
#7  0xc0174bb3 in elf_puthdr (p=0xcdd5fc40, dst=0xce148000, off=0xce601a14, status=0xc7c91d10,
    fpregset=0xc7c91d78, psinfo=0xc7c91e28, numsegs=10)
    at /home/source/dragonfly/src/sys/kern/imgact_elf.c:1124
1124		elf_putfiles(p, dst, off);
(kgdb) fram 5
#5  0xc0236ea0 in trap (frame={tf_fs = -841744360, tf_es = -832569328, tf_ds = -841678832,
      tf_edi = -832562668, tf_esi = 3, tf_ebp = -832562808, tf_isp = -832562844,
      tf_ebx = -836177984, tf_edx = 0, tf_ecx = -837513336, tf_eax = 0, tf_trapno = 12,
      tf_err = 0, tf_eip = -1072214485, tf_cs = 8, tf_eflags = 66182, tf_esp = 0,
      tf_ss = -837517312}) at /home/source/dragonfly/src/sys/i386/i386/trap.c:594
594				(void) trap_pfault(&frame, FALSE, eva);
(kgdb)
Script done on Sat Nov	1 01:49:10 2003

$ uname -a
FreeBSD gzl.local 4.8-STABLE FreeBSD 4.8-STABLE #0: Tue Oct 28 11:11:25 JST 2003     dragonfly at xxxxxxxxx:/usr/obj/home/source/dragonfly/src/sys/GZL  i386

Regards.