On 1/26/11 2:28 PM, Maciej Rutecki wrote: > I created a Bugzilla entry at > https://bugzilla.kernel.org/show_bug.cgi?id=27652 > for your bug report, please add your address to the CC list in there, thanks! I believe patches have been sent that should fix this; there were 2 module unloading regressions in .37, both fixed. If you can test with: http://marc.info/?l=linux-ext4&m=129546975702198&w=2 and http://marc.info/?l=linux-ext4&m=129527644524410&w=2 that'd be great. Thanks, -Eric > On Åroda, 19 stycznia 2011 o 07:53:36 Tao Ma wrote: >> Hi Nick and Ted, >> I ran some very basic test with 38-rc1 and my box run into error with >> the message like: >> >> slab error in kmem_cache_destroy(): cache `ext4_inode_cache': Can't free >> all objects >> Pid: 4395, comm: rmmod Not tainted 2.6.38-rc1 #1 >> Call Trace: >> [<ffffffff820d61dc>] ? kmem_cache_destroy+0x83/0xc7 >> [<ffffffffa0574025>] ? destroy_inodecache+0x15/0x17 [ext4] >> [<ffffffffa05923d1>] ? ext4_exit_fs+0x109/0x143 [ext4] >> [<ffffffff8203d194>] ? put_online_cpus+0x56/0x58 >> [<ffffffff8206735a>] ? module_refcount+0x85/0x9d >> [<ffffffff82067b22>] ? sys_delete_module+0x1b5/0x218 >> [<ffffffff82074fc3>] ? audit_syscall_entry+0x187/0x1ba >> [<ffffffff82002a6b>] ? system_call_fastpath+0x16/0x1b >> SLAB: cache with size 888 has lost its name >> SLAB: cache with size 888 has lost its name >> SLAB: cache with size 888 has lost its name >> SLAB: cache with size 888 has lost its name >> >> The reproduce process is simple:just rmmod ext4 immediately after umount >> an ext4 volume. >> >> I have done some very simple investigation and it seems that with Nick's >> new ext4_i_callback, even after we do ext4_destroy_inode, it isn't >> freed. So after we destroy the ext_inode_cache, and when freeing the >> inode, it errors. Hope it helps. If you have any fixes, I can test it. >> >> Regards, >> Tao >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> Please read the FAQ at http://www.tux.org/lkml/ > -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
