[Bug 194976] New: [10.1-RELEASE][panic] ZFS TRIM. Kernel dies within seconds after mounting ZFS. vfs.zfs.trim.enabled=0 fixes it

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Wed Nov 12 23:16:44 UTC 2014


            Bug ID: 194976
           Summary: [10.1-RELEASE][panic] ZFS TRIM. Kernel dies within
                    seconds after mounting ZFS. vfs.zfs.trim.enabled=0
                    fixes it
           Product: Base System
           Version: 10.1-RC2
          Hardware: Any
                OS: Any
            Status: Needs Triage
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: girgen at FreeBSD.org


booted in single user mode.
/etc/rc.d/zfs start

two seconds... then... boom:
KDB: stack backtrace:                                                           
#0 0xffffffff8096eec0 at kdb_backtrace+0x60                                     
#1 0xffffffff80933b95 at panic+0x155                                            
#2 0xffffffff80d66c1f at trap_fatal+0x38f                                       
#3 0xffffffff80d66f38 at trap_pfault+0x308                                      
#4 0xffffffff80d6659a at trap+0x47a                                             
#5 0xffffffff80d4c482 at calltrap+0x8                                           
#6 0xffffffff819e8a9c at dmu_write_uio_dnode+0xcc                               
#7 0xffffffff819e89ab at dmu_write_uio_dbuf+0x3b                                
#8 0xffffffff81a7a5b2 at zfs_freebsd_write+0x5e2                                
#9 0xffffffff80e85c35 at VOP_WRITE_APV+0x145                                    
#10 0xffffffff809e37e9 at vn_rdwr+0x299                                         
#11 0xffffffff81a36e55 at vdev_file_io_start+0x165                              
#12 0xffffffff81a54676 at zio_vdev_io_start+0x326                               
#13 0xffffffff81a51382 at zio_execute+0x162                                     
#14 0xffffffff81a84e9e at trim_map_commit+0x2ae                                 
#15 0xffffffff81a84ce7 at trim_map_commit+0xf7                                  
#16 0xffffffff81a84ce7 at trim_map_commit+0xf7                                  
#17 0xffffffff81a84a32 at trim_thread+0xf2                                      
Uptime: 1m28s                                 

I added vfs.zfs.trim.enabled=0 to /boot/loader.conf and it boots nicely.

It is an HP DL360 with ciss0: <HP Smart Array P410i>. Just a single volume
presented to the OS, so it is not JBOD, and there are no SSD disks involved.

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