Panic in zfs_freebsd_getattr -> zfs_fuid_table_load - avl_find() succeeded inside avl_add() [ACL, 9.1-PRERELEASE]

[Bryan Drewery]

On 9/2/2012 11:19 PM, Freddie Cash wrote:
> (Please forgive the top-post, sent from my phone.)
> 
> There's a pool or zfs property that deals with how acl inheritance
> works, and how to handle failures (panic, continue, ignore, etc). Don't
> recall the exact name but it's along the lines of aclinherit. What's it
> currently set to? And how does the system react if you change it?
> 
> See the zpool and zfs man pages for info.

According to the manpage, those properties (aclinherit, aclmode), only
affect creation and modification (chmod) of files.

I don't think they'll help here as I can't even access them.


> 
> On Sep 2, 2012 8:51 PM, "Bryan Drewery" <bryan at shatow.net
> <mailto:bryan at shatow.net>> wrote:
> 
>     Running 9.1-PRERELEASE currently.
> 
>     Just set this server up, imported the pool from OpenIndiana 151 I
>     believe it was.
> 
>     When I access (simply `ls`) certain files/directories, the system
>     panics. These files have ACL properties set on them from the Solaris
>     system.
> 
>     This system has 32gb of ram and only 8gb swap setup, so I do not
>     currently have a kernel core dump. It's also practically a production
>     machine, so I do not have much leeway in testing on it.
> 
>     backtrace:
> 
>     >From running ls(1):
> 
>         panic: avl_find() succeeded inside avl_add()
>         avl_add+0x4b
>         zfs_fuid_table_load+0x198
>         zfs_fuid_init+0x12c
>         zfs_fuid_find_by_idx+0xc7
>         zfs_fuid_map_id+0x19
>         zfs_groupmember+0x16
>         zfs_zaccess_aces_check+0x196
>         zfs_zaccess+0xc6
>         zfs_freebsd_getattr+0x1c1
>         vn_stat+0x6a
>         kern_statat_vnhook+0xf9
>         kern_statat+0x15
>         sys_lstat+0x2a
>         amd64_syscall+0x540
> 
>     At first I thought this was related to MAC / ugidfw, but I am able to
>     reproduce with those not compiled in. FWIW, here is a backtrace from
>     having that enabled:
> 
>         panic: avl_find() succeeded inside avl_add()
>         avl_add+0x4b
>         zfs_fuid_table_load+0x198
>         zfs_fuid_init+0x12c
>         zfs_fuid_find_by_idx+0xc7
>         zfs_fuid_map_id+0x19
>         zfs_groupmember+0x16
>         zfs_zaccess_aces_check+0x196
>         zfs_zaccess+0xc6
>         zfs_freebsd_getattr+0x1c1
>         ugidfw_check_vp+0x6c
>         mac_vnode_check_stat+0xa7
>         vn_stat+0x39
>         kern_statat_vnhook+0xf9
>         kern_statat+0x15
>         sys_stat+0x2a
>         amd64_syscall+0x540
> 
> 
>     Is there some easy way to clear these ACL properties on the files? I do
>     not need them.
> 
>     Any suggestions on how I might fix this or debug this further?
> 
> 
>     Bryan
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> 


-- 
Regards,
Bryan Drewery
bdrewery at freenode/EFNet