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kern/52380: [NetBSD 8.0] Another panic in ffs_newvnode()

>Number:         52380
>Category:       kern
>Synopsis:       [NetBSD 8.0] Another panic in ffs_newvnode()
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Jul 09 09:20:00 +0000 2017
>Originator:     BERTRAND Joël
>Release:        8.0 BETA
NetBSD 8.0_BETA NetBSD 8.0_BETA (CUSTOM) #4: Fri Jul  7 22:39:32 CEST 2017 amd64

    Yesterfay, my server running NetBSD 8.0 (built from sources this morning) has paniced :

legendre# crash -M netbsd.4.core -N netbsd.4
Crash version 8.0_BETA, image version 8.0_BETA.
System panicked: ffs_newvnode: dup alloc ino=1109312 on /usr: mode 2f20/2f20 gen 65642f6a/65642f6a size 726964747365642f blocks 752f3436646d612e
Backtrace from time of crash is available.
crash> bt
?() at fffffe84075c4000
vpanic() at vpanic+0x149
snprintf() at snprintf
ffs_newvnode() at ffs_newvnode+0x530
vcache_new() at vcache_new+0x7c
ufs_makeinode() at ufs_makeinode+0x38
ufs_create() at ufs_create+0x31
vn_open() at vn_open+0x351
do_open() at do_open+0x112
do_sys_openat() at do_sys_openat+0x68
sys_open() at sys_open+0x24
syscall() at syscall+0x1bc
--- syscall (number 5) ---

gdb gives following backtrace :
#0  0xffffffff802292e5 in cpu_reboot (howto=howto@entry=260,
    at /usr/src/netbsd-8/src/sys/arch/amd64/amd64/machdep.c:674
#1  0xffffffff8094b121 in vpanic (
    fmt=fmt@entry=0xffffffff8115d870 "%s: dup alloc ino=%ld on %s: mode %x/%x gen %x/%x size %lx blocks %lx", ap=ap@entry=0xfffffe811e5b29c8)
    at /usr/src/netbsd-8/src/sys/kern/subr_prf.c:342
#2  0xffffffff8094b1d5 in panic (
    fmt=fmt@entry=0xffffffff8115d870 "%s: dup alloc ino=%ld on %s: mode %x/%x gen %x/%x size %lx blocks %lx") at /usr/src/netbsd-8/src/sys/kern/subr_prf.c:258
#3  0xffffffff808a773b in ffs_newvnode (mp=0xfffffe841b078000,
    dvp=0xfffffe81687fbbd0, vp=0xfffffe81fe181698, vap=0xfffffe811e5b2c30,
    cred=0xfffffe84075c4000, key_len=<optimized out>,
    at /usr/src/netbsd-8/src/sys/ufs/ffs/ffs_vfsops.c:2135
#4  0xffffffff809965b6 in vcache_new (mp=0xfffffe841b078000,
    dvp=dvp@entry=0xfffffe81687fbbd0, vap=vap@entry=0xfffffe811e5b2c30,
    cred=0xfffffe84075c4000, vpp=vpp@entry=0xfffffe811e5b2b48)
    at /usr/src/netbsd-8/src/sys/kern/vfs_vnode.c:1375
#5  0xffffffff808d8518 in ufs_makeinode (vap=0xfffffe811e5b2c30,
    dvp=dvp@entry=0xfffffe81687fbbd0, ulr=0xfffffe815aa29088,
    vpp=0xfffffe811e5b2d80, cnp=0xfffffe811e5b2da8)
    at /usr/src/netbsd-8/src/sys/ufs/ufs/ufs_vnops.c:1739
#6  0xffffffff808d87fa in ufs_create (v=0xfffffe811e5b2bc8)
    at /usr/src/netbsd-8/src/sys/ufs/ufs/ufs_vnops.c:156
#7  0xffffffff8099d5d2 in VOP_CREATE (dvp=0xfffffe81687fbbd0,
    vpp=vpp@entry=0xfffffe811e5b2d80, cnp=cnp@entry=0xfffffe811e5b2da8,
    at /usr/src/netbsd-8/src/sys/kern/vnode_if.c:216
#8  0xffffffff80997f1c in vn_open (ndp=ndp@entry=0xfffffe811e5b2d58,
    fmode=fmode@entry=4196866, cmode=cmode@entry=420)
    at /usr/src/netbsd-8/src/sys/kern/vfs_vnops.c:211
#9  0xffffffff80990254 in do_open (l=l@entry=0xfffffe83df1594e0, dvp=0x0,
    pb=<optimized out>, open_flags=open_flags@entry=4196865,
    open_mode=open_mode@entry=420, fd=fd@entry=0xfffffe811e5b2e7c)
    at /usr/src/netbsd-8/src/sys/kern/vfs_syscalls.c:1576
#10 0xffffffff809903a5 in do_sys_openat (l=0xfffffe83df1594e0,
    fdat=fdat@entry=-100, path=<optimized out>, flags=4196865, mode=420,
    at /usr/src/netbsd-8/src/sys/kern/vfs_syscalls.c:1656
#11 0xffffffff80990463 in sys_open (l=<optimized out>, uap=<optimized out>,
    at /usr/src/netbsd-8/src/sys/kern/vfs_syscalls.c:1676
#12 0xffffffff8024aaec in sy_call (rval=0xfffffe811e5b2eb0,
    uap=0xfffffe811e5b2f00, l=0xfffffe83df1594e0,
    sy=0xffffffff8147dad8 <sysent+120>)

ffs_newvnode() seems to panic on /usr

My /etc/fstab is :
/dev/raid0a             /       ffs     rw,log,async    1 1
/dev/raid0b             none    swap    sw,dp           0 0
/dev/raid0e             /usr    ffs     rw,log,async    1 2
/dev/raid0f             /var    ffs     rw,log,async    1 2
/dev/raid0g             /usr/src        ffs     rw,log,async    1 2
/dev/raid0h             /srv    ffs     rw,log,async    1 2
/dev/dk0                /home   ffs     rw,log,async    1 3
kernfs          /kern   kernfs  rw
ptyfs           /dev/pts        ptyfs   rw
procfs          /proc   procfs  rw
/dev/cd0a               /cdrom  cd9660  ro,noauto
tmpfs           /var/shm        tmpfs   rw,-m1777,-sram%25

raid0 : /dev/wd[01] (raid level 1) -> raid0[abefgh]
raid1 : /dev/wd[234] (raid level 5) -> dk0

    Of course, I have checked that my disks were not faulty (no error logged in disk firmware). fsck doesn't return error also.

    Best regards,

I don't know, panic occurs when I build packages from pkgsrc, but kernel seems to complain about another filesystem (/usr/pkgsrc and /usr are on different slices).

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