Hi,
On 03/03/15 03:43, Brett Wynkoop wrote:
So do we think this is an ARM specific thing, or is it a UFS thing?
I am thinking maybe I should format as ext or ntfs and see if we have
the same issue. If we do then we can rule out a UFS bug.
I just caught this issue with amd64 while building a kernel.
Fatal trap 12: page fault while in kernel mode
cpuid = 12; apic id = 20
fault virtual address = 0xffffffffffffffff
fault code = supervisor read data, page not present
instruction pointer = 0x20:0xffffffff80bba91d
stack pointer = 0x28:0xfffffe0466e04120
frame pointer = 0x28:0xfffffe0466e04150
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 = 83323 (objcopy)
(kgdb) bt
#0 doadump (textdump=Unhandled dwarf expression opcode 0x93
) at pcpu.h:219
#1 0xffffffff803530ae in db_dump (dummy=<value optimized out>,
dummy2=Unhandled dwarf expression opcode 0x93
)
at /usr/img/freebsd/sys/ddb/db_command.c:533
#2 0xffffffff80352b2c in db_command (cmd_table=0x0) at
/usr/img/freebsd/sys/ddb/db_command.c:440
#3 0xffffffff80352894 in db_command_loop () at
/usr/img/freebsd/sys/ddb/db_command.c:493
#4 0xffffffff803553f0 in db_trap (type=<value optimized out>, code=Unhandled
dwarf expression opcode 0x93
)
at /usr/img/freebsd/sys/ddb/db_main.c:251
#5 0xffffffff80994e8e in kdb_trap (type=Unhandled dwarf expression opcode 0x93
) at /usr/img/freebsd/sys/kern/subr_kdb.c:654
#6 0xffffffff80d79fe9 in trap_fatal (frame=0xfffffe0466e04070, eva=<value
optimized out>)
at /usr/img/freebsd/sys/amd64/amd64/trap.c:856
#7 0xffffffff80d7a281 in trap_pfault (frame=0xfffffe0466e04070, usermode=<value
optimized out>)
at /usr/img/freebsd/sys/amd64/amd64/trap.c:678
#8 0xffffffff80d79942 in trap (frame=0xfffffe0466e04070) at
/usr/img/freebsd/sys/amd64/amd64/trap.c:426
#9 0xffffffff80d57e72 in calltrap () at
/usr/img/freebsd/sys/amd64/amd64/exception.S:235
#10 0xffffffff80bba91d in add_to_worklist (wk=0xfffff801670d0680,
flags=Unhandled dwarf expression opcode 0x93
)
at /usr/img/freebsd/sys/ufs/ffs/ffs_softdep.c:1513
#11 0xffffffff80bc1813 in free_newblk (newblk=0xfffff8006d6f3700)
at /usr/img/freebsd/sys/ufs/ffs/ffs_softdep.c:7414
#12 0xffffffff80bb1a80 in softdep_setup_allocdirect (ip=0xfffff8024ffbadc8,
off=<value optimized out>,
newblkno=<value optimized out>, oldblkno=<value optimized out>,
newsize=32768, oldsize=32768,
bp=<value optimized out>) at /usr/img/freebsd/sys/ufs/ffs/ffs_softdep.c:5361
#13 0xffffffff80b9a6e4 in ffs_reallocblks (ap=<value optimized out>)
at /usr/img/freebsd/sys/ufs/ffs/ffs_alloc.c:870
#14 0xffffffff80eb0f67 in VOP_REALLOCBLKS_APV (vop=<value optimized out>, a=<value
optimized out>)
at vnode_if.c:2727
#15 0xffffffff809f7574 in cluster_write (vp=0xfffff802a44493b0,
bp=0xfffffe03e1b3a590, filesize=393216,
seqcount=0, gbflags=<value optimized out>) at vnode_if.h:1122
#16 0xffffffff80bca11e in ffs_write (ap=0xfffffe0466e04690) at
/usr/img/freebsd/sys/ufs/ffs/ffs_vnops.c:810
#17 0xffffffff80eaeac3 in VOP_WRITE_APV (vop=<value optimized out>,
a=0xfffffe0466e04690) at vnode_if.c:997
#18 0xffffffff80a1acce in vn_write (fp=0xfffff801675d0280,
uio=0xfffffe0466e04970,
active_cred=<value optimized out>, flags=<value optimized out>,
td=0xfffff8041cb8f980) at vnode_if.h:413
#19 0xffffffff80a18805 in vn_io_fault1 () at
/usr/img/freebsd/sys/kern/vfs_vnops.c:1053
#20 0xffffffff80a16e03 in vn_io_fault (fp=0xfffff801675d0280,
uio=0xfffffe0466e04970,
active_cred=<value optimized out>, flags=0, td=0xfffff8041cb8f980)
at /usr/img/freebsd/sys/kern/vfs_vnops.c:1158
#21 0xffffffff809b654a in dofilewrite (td=0xfffff8041cb8f980, fd=4,
fp=0xfffff801675d0280,
auio=0xfffffe0466e04970, offset=<value optimized out>, flags=Unhandled
dwarf expression opcode 0x93
) at file.h:304
#22 0xffffffff809b6258 in kern_writev (td=0xfffff8041cb8f980, fd=Unhandled
dwarf expression opcode 0x93
)
---Type <return> to continue, or q <return> to quit---
at /usr/img/freebsd/sys/kern/sys_generic.c:481
#23 0xffffffff809b61e3 in sys_write (td=0xfffff80167997000, uap=<value optimized
out>)
at /usr/img/freebsd/sys/kern/sys_generic.c:396
#24 0xffffffff80d7a84f in amd64_syscall (td=0xfffff8041cb8f980, traced=0) at
subr_syscall.c:133
#25 0xffffffff80d5815b in Xfast_syscall () at
/usr/img/freebsd/sys/amd64/amd64/exception.S:395
#26 0x00000000004cae5a in ?? ()
(kgdb) print wk
$1 = (struct worklist *) 0xfffff801670d0680
(kgdb) print /x *((struct ufsmount *)wk->wk_mp->mnt_data)
$5 = {
um_mountp = 0xfffff80167201000,
um_dev = 0xfffff80167107600,
um_cp = 0xfffff80167214100,
um_bo = 0xfffff801671e4830,
um_devvp = 0xfffff801671e4760,
um_fstype = 0x2,
um_fs = 0xfffff8016722a000,
um_extattr = {
uepm_lock = {
lock_object = {
lo_name = 0x0,
lo_flags = 0x0,
lo_data = 0x0,
lo_witness = 0x0
},
sx_lock = 0x0
},
uepm_list = {
lh_first = 0x0
},
uepm_ucred = 0x0,
uepm_flags = 0x0
},
um_nindir = 0x1000,
um_bptrtodb = 0x3,
um_seqinc = 0x8,
um_lock = {
lock_object = {
lo_name = 0xffffffff81053eb2,
lo_flags = 0x1030000,
lo_data = 0x0,
lo_witness = 0xfffffe0000b1c900
},
mtx_lock = 0x4
},
um_fsckpid = 0x0,
um_softdep = 0xfffff80167997000,
---Type <return> to continue, or q <return> to quit---
um_quotas = {0x0, 0x0},
um_cred = {0x0, 0x0},
um_btime = {0x0, 0x0},
um_itime = {0x0, 0x0},
um_qflags = {0x0, 0x0},
um_savedmaxfilesize = 0x0,
um_candelete = 0x0,
um_writesuspended = 0x0,
um_balloc = 0xffffffff80b9ff30,
um_blkatoff = 0xffffffff80bc4950,
um_truncate = 0xffffffff80ba1fd0,
um_update = 0xffffffff80ba1c60,
um_valloc = 0xffffffff80b9ac70,
um_vfree = 0xffffffff80b9ba70,
um_ifree = 0xffffffff80bc9210,
um_rdonly = 0xffffffff80ba3bc0,
um_snapgone = 0xffffffff80ba7580
}
(kgdb) print /x ((struct ufsmount *)wk->wk_mp->mnt_data)[0].um_softdep[0]
$6 = {
sd_fslock = {
lock_object = {
lo_name = 0xffffffff810502ea,
lo_flags = 0x5230000,
lo_data = 0x0,
lo_witness = 0xfffffe0000b1ca80
},
rw_lock = 0xfffff8041cb8f980
},
sd_workitem_pending = {
lh_first = 0xfffff801670f6a00
},
sd_worklist_tail = 0xffffffffffffffff,
sd_journal_pending = {
lh_first = 0x0
},
sd_journal_tail = 0x0,
sd_jblocks = 0x0,
sd_unlinked = {
tqh_first = 0x0,
tqh_last = 0xfffff80167997048
},
sd_dirtycg = {
lh_first = 0xfffff801672de900
},
sd_mkdirlisthd = {
lh_first = 0x0
},
sd_pdhash = 0xfffffe0002467000,
sd_pdhashsize = 0xffff,
sd_pdnextclean = 0x0,
sd_idhash = 0xfffffe00024e7000,
sd_idhashsize = 0x3ffff,
sd_idnextclean = 0x0,
sd_newblkhash = 0xfffffe00026e7000,
sd_newblkhashsize = 0x7ffff,
sd_bmhash = 0xfffffe0002207000,
---Type <return> to continue, or q <return> to quit---
sd_bmhashsize = 0x3ff,
sd_indirhash = 0xfffff801679a5070,
sd_indirhashsize = 0x0,
sd_on_journal = 0x0,
sd_on_worklist = 0x2,
sd_deps = 0x76e7,
sd_accdeps = 0xa1d66,
sd_req = 0x0,
sd_flags = 0x0,
sd_cleanups = 0x0,
sd_flushtd = 0xfffff801679264c0,
sd_next = {
tqe_next = 0x0,
tqe_prev = 0xffffffff817d8798
},
sd_ump = 0xfffff80167229200,
sd_curdeps = {0x1a3, 0x105f, 0x5, 0x1, 0x30e4, 0x172, 0x22c4, 0x1, 0x2f,
0x32, 0xf21, 0x0, 0x8, 0x0,
0x3a, 0x0 <repeats 13 times>}
}
(kgdb) frame 11
#11 0xffffffff80bc1813 in free_newblk (newblk=0xfffff8006d6f3700)
at /usr/img/freebsd/sys/ufs/ffs/ffs_softdep.c:7414
7414 add_to_worklist(&freefrag->ff_list, 0);
(kgdb) print *newblk
$7 = {
nb_list = {
wk_list = {
le_next = 0xffffffffffffffff,
le_prev = 0xffffffffffffffff
},
wk_mp = 0xfffff80167201000,
wk_type = 4,
wk_state = 257
},
nb_hash = {
le_next = 0x0,
le_prev = 0xfffffe00029963c0
},
nb_deps = {
le_next = 0xffffffffffffffff,
le_prev = 0xffffffffffffffff
},
nb_jnewblk = 0x0,
nb_bmsafemap = 0xfffff801672de900,
nb_freefrag = 0x0,
nb_indirdeps = {
lh_first = 0x0
},
nb_newdirblk = {
lh_first = 0x0
},
nb_jwork = {
lh_first = 0x0
},
nb_newblkno = 66412152
}
--HPS
_______________________________________________
freebsd-current@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-current
To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
