On 24/08/2013 21:03, Toomas Aas wrote:
Hello!
On Fri, 23 Aug 2013 Andriy Gapon <a...@freebsd.org> wrote:
This change is about to be MFC-ed.
on 26/07/2013 17:39 Andriy Gapon said the following:
I have just committed a significant change to devfs path matching logic
http://svnweb.freebsd.org/changeset/base/253677
I just rebuilt my 8-STABLE i386 system to r254796 and now receive a
kernel panic on boot. If I remove my /etc/devfs.rules file, the panic
does not happen. Can anyone point out what is wrong with my devfs.rules
what the new path matching logic doesn't like?
$ cat /etc/devfs.rules.old
[localrules=10]
add path "da*" mode 0660 group operator
add path "usb/1.2.0" mode 0660 group uucp
add path "usb/4.3.0" mode 0660 group operator
The panic, as transcribed from screen:
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x0
fault code = supervisor read, page not present
instruction pointer = 0x20:0xc06dde21
stack pointer = 0x28:0xe8690a48
frame pointer = 0x28:0xe8690a80
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, iopl = 0
current process = 577 (ln)
trap number = 12
panic: page fault
KDB: stack backtrace:
#0 0xc0670ece at kdb_backtrace+0x50
#1 0xc06449fa at panic+0x132
#2 0xc07eb1d2 at trap_fatal+0x21e
#3 0xc07eb4e0 at trap_pfault+0x1c2
#4 0xc07ec251 at trap+0x3c1
#5 0xc07d95fc at calltrap+0x6
#6 0xc05c7001 at devfs_rule_run+0x13d
#7 0xc05c70c3 at devfs_ruleset_applyde+0x25
#8 0xc05c71b3 at devfs_rules_apply+0x73
#9 0xc05cad51 at devfs_symlink+0x124
#10 0xc080d084 at VOP_SYMLINK_APV+0x4a
#11 0xc06d2985 at kern_symlinkat+0x38b
#12 0xc06d29da at kern_symlink+0x2e
#13 0xc06d2a05 at symlink+0x29
#14 0xc07eb7c7 at syscall+0x1a1
#15 0xc07d9661 at Xint0x80_syscall+0x21
Thanks in advance!
I'm getting a similar panic with r254986 on stable/8 when starting up
jails :
# cat /var/crash/version.txt
FreeBSD 8.4-STABLE #1 r254986M: Wed Aug 28 16:26:23 BST 2013
root@jailhost.localdomain:/usr/obj/usr/src/sys/JAILHOST
# cat /etc/devfs.rules
[devfsrules_jailzfs=5]
add include $devfsrules_jail
add path 'zfs' unhide
[devfsrules_jail_tinderbox=6]
add include $devfsrules_jail
add path 'zfs' unhide
add path 'mem' unhide
add path 'kmem' unhide
# awk '/Fatal trap/,0' /var/crash/msgbuf.txt
Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address = 0x0
fault code = supervisor read data, page not present
instruction pointer = 0x20:0xffffffff806f8e46
stack pointer = 0x28:0xffffff812375b670
frame pointer = 0x28:0xffffff812375b6d0
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 1028 (ln)
trap number = 12
panic: page fault
cpuid = 0
KDB: stack backtrace:
db_trace_self_wrapper() at 0xffffffff8020466a = db_trace_self_wrapper+0x2a
kdb_backtrace() at 0xffffffff80684df7 = kdb_backtrace+0x37
panic() at 0xffffffff806510ce = panic+0x1ce
trap_fatal() at 0xffffffff809e8eb0 = trap_fatal+0x290
trap_pfault() at 0xffffffff809e923e = trap_pfault+0x23e
trap() at 0xffffffff809e970e = trap+0x3ce
calltrap() at 0xffffffff809cf894 = calltrap+0x8
--- trap 0xc, rip = 0xffffffff806f8e46, rsp = 0xffffff812375b670, rbp =
0xffffff812375b6d0 ---
fnmatch() at 0xffffffff806f8e46 = fnmatch+0x66
devfs_rule_run() at 0xffffffff805d255b = devfs_rule_run+0x17b
devfs_ruleset_applyde() at 0xffffffff805d2621 = devfs_ruleset_applyde+0x31
devfs_rules_apply() at 0xffffffff805d274a = devfs_rules_apply+0x6a
devfs_symlink() at 0xffffffff805d624e = devfs_symlink+0x13e
VOP_SYMLINK_APV() at 0xffffffff80a78f58 = VOP_SYMLINK_APV+0x68
kern_symlinkat() at 0xffffffff806edc9e = kern_symlinkat+0x38e
amd64_syscall() at 0xffffffff809e8484 = amd64_syscall+0x1f4
Xfast_syscall() at 0xffffffff809cfb8c = Xfast_syscall+0xfc
--- syscall (57, FreeBSD ELF64, symlink), rip = 0x8006a08bc, rsp =
0x7fffffffd838, rbp = 0x7fffffffed27 ---
Uptime: 2m39s
Regards,
Jase.
--
Jase Thew
j...@freebsd.org
FreeBSD Ports Committer
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