[Bug 234906] kernel panic: softdep_setup_inomapdep: dependency 0xfffff80107d15c00 for newinode already exists

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=234906

--- Comment #4 from Conrad Meyer <cem at freebsd.org> ---
>From core.txt, this wasn't the first softdep panic you encountered; the first
was:

panic: handle_allocdirect_partdone: lost dep
cpuid = 2
time = 1547073542
KDB: stack backtrace:
#0 0xffffffff80701677 at kdb_backtrace+0x67
#1 0xffffffff806b6d93 at vpanic+0x1a3
#2 0xffffffff806b6be3 at panic+0x43
#3 0xffffffff80964e98 at handle_allocdirect_partdone+0xd8
#4 0xffffffff8096f503 at handle_written_bmsafemap+0x583
#5 0xffffffff80953962 at softdep_disk_write_complete+0x4e2
#6 0xffffffff80764d14 at bufdone+0x2a4
#7 0xffffffff80603c30 at g_io_deliver+0x230
#8 0xffffffff80603c30 at g_io_deliver+0x230
#9 0xffffffff806012b3 at g_disk_done+0x123
#10 0xffffffff803278e5 at dadone+0x5e5
#11 0xffffffff802cc4a1 at xpt_done_process+0x6a1
#12 0xffffffff802ce726 at xpt_done_td+0x116
#13 0xffffffff80678b23 at fork_exit+0x83
#14 0xffffffff809c944e at fork_trampoline+0xe

So at that time, all of your filesystems were detached in an unclean state. 
After reboot, GEOM reports GPT corruption and background fsck kicks in due to
unclean mount.

...
WARNING: / was not properly dismounted
WARNING: /: mount pending error: blocks 2688 files 2
...
ZFS filesystem version: 5
ZFS storage pool version: features support (5000)
Starting file system checks:
/dev/ada0p2: UNREF FILE I=15168749  OWNER=johan MODE=100644
/dev/ada0p2: SIZE=1584 MTIME=Jan  7 07:53 2019  (CLEARED)
/dev/ada0p2: FREE BLK COUNT(S) WRONG IN SUPERBLK (SALVAGED)
/dev/ada0p2: SUMMARY INFORMATION BAD (SALVAGED)
/dev/ada0p2: BLK(S) MISSING IN BIT MAPS (SALVAGED)
/dev/ada0p2: 705641 files, 13986522 used, 16285630 free (33934 frags, 2031462
blocks, 0.1% fragmentation)
/dev/da0p4: DEFER FOR BACKGROUND CHECKING
Mounting local filesystems:
WARNING: /u was not properly dismounted
WARNING: /u: mount pending error: blocks 12048 files 119
...
GEOM: da1: the secondary GPT table is corrupt or invalid.
GEOM: da1: using the primary only -- recovery suggested.
GEOM: ufsid/5c32f4b585a9f480: the secondary GPT table is corrupt or invalid.
GEOM: ufsid/5c32f4b585a9f480: using the primary only -- recovery suggested.
GEOM: diskid/DISK-4C530002671026104222: the secondary GPT table is corrupt or
invalid.
GEOM: diskid/DISK-4C530002671026104222: using the primary only -- recovery
suggested.
...

The USB device disconnects itself and reconnects for some reason; same error
messages from GEOM again.

ugen1.6: <SanDisk Cruzer Fit> at usbus1 (disconnected)
umass1: at uhub3, port 2, addr 6 (disconnected)
da1 at umass-sim1 bus 1 scbus7 target 0 lun 0
da1: <SanDisk Cruzer Fit 1.26>  s/n 4C530002671026104222 detached
(da1:umass-sim1:1:0:0): Periph destroyed
...
da1 at umass-sim1 bus 1 scbus7 target 0 lun 0
da1: <SanDisk Cruzer Fit 1.26> Fixed Direct Access SPC-4 SCSI device
da1: Serial Number 4C530002671026104222
da1: 40.000MB/s transfers
da1: 30532MB (62530624 512 byte sectors)
...

This bit looks like fsck, then our panic as filed:

free inode /u/37962415 had -128 blocks
free inode /u/37962556 had -4480 blocks
free inode /u/37962623 had -13824 blocks
free inode /u/37962767 had -192 blocks
free inode /u/37962771 had -8000 blocks
free inode /u/37962774 had -6080 blocks
panic: softdep_setup_inomapdep: dependency 0xfffff80107d15c00 for newinode
already exists

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