Looks like this patch has not been applied to the 4.18 kernels yet: kernel BUG at /build/linux-hwe-mCxn_j/linux-hwe-4.18.0/mm/slub.c:296! invalid opcode: 0000 [#1] SMP PTI CPU: 15 PID: 25039 Comm: kworker/15:0 Tainted: G OE 4.18.0-25-generic #26~18.04.1-Ubuntu Workqueue: nfsiod rpc_async_release [sunrpc] RIP: 0010:__slab_free+0x19c/0x340 Code: 00 48 89 c7 fa 66 0f 1f 44 00 00 f0 49 0f ba 2c 24 00 72 64 4d 3b 6c 24 20 74 11 49 0f ba 34 24 00 57 9d 0f 1f 44 00 00 eb a1 <0f> 0b 49 3b 54 24 28 75 e8 49 89 5c 24 20 49 89 4c 24 28 49 0f ba RSP: 0018:ffffae647af3fc90 EFLAGS: 00010246 RAX: ffff93a5d88057c0 RBX: ffff93a5d88057c0 RCX: ffff93a5d88057c0 RDX: 0000000080400028 RSI: ffffd70cdf620140 RDI: ffff93961f407780 RBP: ffffae647af3fd30 R08: 0000000000000001 R09: ffffffffc0d8c536 R10: ffff93a5d88057c0 R11: 0000000000000001 R12: ffffd70cdf620140 R13: ffff93a5d88057c0 R14: ffff93961f407780 R15: 0ffffce643fbff40 FS: 0000000000000000(0000) GS:ffff93ae1f3c0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbc681326c0 CR3: 0000002cde80a002 CR4: 00000000001606e0 Call Trace: ? __slab_free+0x21c/0x340 ? percpu_counter_add_batch+0x4f/0x60 ? filelayout_free_lseg+0x56/0x90 [nfs_layout_nfsv41_files] kfree+0x165/0x180 ? __switch_to_asm+0x40/0x70 ? kfree+0x165/0x180 filelayout_free_lseg+0x56/0x90 [nfs_layout_nfsv41_files] pnfs_put_lseg+0xbc/0x130 [nfsv4] pnfs_writehdr_free+0x16/0x30 [nfsv4] nfs_write_completion+0xc6/0x1d0 [nfs] ? __switch_to_asm+0x34/0x70 ? __switch_to_asm+0x40/0x70 ? refcount_dec_and_lock+0x12/0x50 nfs_pgio_release+0x16/0x20 [nfs] pnfs_generic_rw_release+0x29/0x30 [nfsv4] rpc_free_task+0x33/0x70 [sunrpc] rpc_async_release+0x12/0x20 [sunrpc] process_one_work+0x1fd/0x3f0 worker_thread+0x34/0x410 kthread+0x121/0x140 ? process_one_work+0x3f0/0x3f0 ? kthread_create_worker_on_cpu+0x70/0x70 ret_from_fork+0x35/0x40
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1812086 Title: kernel BUG at /build/linux-vxxS7y/linux-4.15.0/mm/slub.c:296! To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1812086/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs