From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sagi Grimberg Subject: Seeing WARN_ON in ib_dealloc_pd from ipoib in kernel 4.3-rc1-debug Date: Wed, 7 Oct 2015 18:51:13 +0300 Message-ID: <56153F71.2010801@dev.mellanox.co.il> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: "linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" Cc: Jason Gunthorpe , Erez Shitrit , Doug Ledford List-Id: linux-rdma@vger.kernel.org This started popping up (not sure if it's new to 4.3-rc1). Happens when unloading the provider driver (mlx4/mlx5 in my case). Has anyone seen this? kernel: ------------[ cut here ]------------ kernel: WARNING: CPU: 2 PID: 6012 at drivers/infiniband/core/verbs.c:283 ib_dealloc_pd+0x5b/0xa0 [ib_core]() kernel: Modules linked in: rpcrdma ib_srp scsi_transport_srp ib_iser rdma_cm iw_cm libiscsi scsi_transport_iscsi ib_umad ib_uverbs ib_ipoib ib_cm mlx4_ib ib_sa ib_mad mlx4_core mlx5_ib(-) mlx5_core ib_core ib_addr mst_pciconf(O) mst_pci(O) nfsv3 nfs af_packet coretemp x86_pkg_temp_thermal crct10dif_pclmul crc32c_intel aesni_intel aes_x86_64 glue_helper lrw gf128mul ablk_helper cryptd microcode ipmi_ssif pcspkr lpc_ich i2c_i801 mfd_core ioatdma wmi ipmi_si ipmi_msghandler processor button nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc ip_tables x_tables ext4 crc16 mbcache jbd2 sd_mod hid_generic usbhid hid ahci libahci libata igb ehci_pci hwmon ehci_hcd ptp usbcore pps_core scsi_mod i2c_algo_bit usb_common i2c_core dca autofs4 [last unloaded: mlx4_core] kernel: CPU: 2 PID: 6012 Comm: modprobe Tainted: G O L 4.3.0-rc3-debug+ #67 kernel: Hardware name: Supermicro SYS-1027R-WRF/X9DRW, BIOS 3.0a 08/08/2013 kernel: 000000000000011b ffff8807a99afbe8 ffffffff8129915b 0000000000000009 kernel: 0000000000000000 ffff8807a99afc28 ffffffff810752b5 ffff880827d7c2a0 kernel: ffff8807b0d03260 ffff880827d7c2a0 ffff880827d7cc60 0000000000000000 kernel: Call Trace: kernel: [] dump_stack+0x4f/0x74 kernel: [] warn_slowpath_common+0x95/0xe0 kernel: [] warn_slowpath_null+0x1a/0x20 kernel: [] ib_dealloc_pd+0x5b/0xa0 [ib_core] kernel: [] ipoib_transport_dev_cleanup+0x9e/0xf0 [ib_ipoib] kernel: [] ipoib_ib_dev_cleanup+0x5e/0x80 [ib_ipoib] kernel: [] ipoib_dev_cleanup+0x2a4/0x3b0 [ib_ipoib] kernel: [] ? __local_bh_enable_ip+0x6d/0xd0 kernel: [] ipoib_uninit+0xe/0x10 [ib_ipoib] kernel: [] rollback_registered_many+0x1a7/0x2c0 kernel: [] rollback_registered+0x31/0x40 kernel: [] unregister_netdevice_queue+0x58/0xb0 kernel: [] unregister_netdev+0x20/0x30 kernel: [] ipoib_remove_one+0xa1/0xe0 [ib_ipoib] kernel: [] ib_unregister_device+0xc1/0x160 [ib_core] kernel: [] mlx5_ib_remove+0x19/0x50 [mlx5_ib] kernel: [] mlx5_remove_device+0x68/0x80 [mlx5_core] kernel: [] mlx5_unregister_interface+0x3e/0x70 [mlx5_core] kernel: [] mlx5_ib_cleanup+0x10/0x694 [mlx5_ib] kernel: [] SyS_delete_module+0x17a/0x1c0 kernel: [] ? trace_hardirqs_on_thunk+0x17/0x19 kernel: [] ? generic_show_options+0x180/0x180 kernel: [] entry_SYSCALL_64_fastpath+0x12/0x76 kernel: ---[ end trace 31339c7283574ccb ]--- -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html