On Thu, May 11, 2017 at 08:14:28PM +0800, Honggang LI wrote: > From: Honggang Li <[email protected]> > > ipoib_dev_init accesses the private data for IPoIB net_device with > ipoib_priv. ipoib_get_link_ksettings should do as ipoib_dev_init. > Otherwise kernel panic. > > [ 27.271938] IPv6: ADDRCONF(NETDEV_CHANGE): mlx5_ib0.8006: link becomes > ready > [ 28.156790] BUG: unable to handle kernel NULL pointer dereference at > 000000000000067c > [ 28.166309] IP: ib_query_port+0x30/0x180 [ib_core] > [ 28.172364] PGD 0 > [ 28.172364] P4D 0 > [ 28.175307] > [ 28.180595] Oops: 0000 [#1] SMP > [ 28.184802] Modules linked in: bridge 8021q garp mrp stp llc rpcrdma > ib_isert iscsi_target_mod ib_iser libiscsi scsi_transport_iscsi ib_srpt > target_core_mod ib_srp scsi_transport_srp ib_ipoib rdma_ucm ib_ucm ib_uverbs > ib_umad rdma_cm ib_cm iw_cm mlx5_ib ib_core intel_rapl sb_edac > x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass > crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel ipmi_ssif > crypto_simd glue_helper cryptd iTCO_wdt ipmi_si iTCO_vendor_support wmi > pcspkr ipmi_devintf dcdbas ipmi_msghandler lpc_ich sg mei_me mei shpchp > acpi_power_meter nfsd auth_rpcgss nfs_acl lockd grace sunrpc binfmt_misc > ip_tables xfs libcrc32c sd_mod mgag200 i2c_algo_bit drm_kms_helper > syscopyarea sysfillrect sysimgblt fb_sys_fops ttm mlx5_core drm tg3 devlink > ahci libahci ptp libata > [ 28.270227] crc32c_intel i2c_core pps_core dm_mirror dm_region_hash > dm_log dm_mod > [ 28.279674] CPU: 0 PID: 1766 Comm: libvirtd Not tainted > 4.11.0.56868a4.20170510+ #1 > [ 28.289242] Hardware name: Dell Inc. PowerEdge R430/03XKDV, BIOS 1.6.2 > 01/08/2016 > [ 28.298628] task: ffff8b4777311680 task.stack: ffffb9ab0f7ac000 > [ 28.306282] RIP: 0010:ib_query_port+0x30/0x180 [ib_core] > [ 28.313249] RSP: 0018:ffffb9ab0f7afbb0 EFLAGS: 00010246 > [ 28.320128] RAX: 0000000000000000 RBX: 0000000000000000 RCX: > 0000000000000000 > [ 28.329169] RDX: ffffb9ab0f7afc00 RSI: 0000000000000000 RDI: > 0000000000000000 > [ 28.338202] RBP: ffffb9ab0f7afbf0 R08: 0000000000000000 R09: > 0000000000000000 > [ 28.347246] R10: 0000000000001000 R11: 0000000000000000 R12: > 0000000000000000 > [ 28.356284] R13: ffffb9ab0f7afc00 R14: ffffb9ab0f7afef0 R15: > ffff8b377eae9b80 > [ 28.365316] FS: 00007f9aed612700(0000) GS:ffff8b377f800000(0000) > knlGS:0000000000000000 > [ 28.375431] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 28.383724] CR2: 000000000000067c CR3: 000000202aa7c000 CR4: > 00000000001406f0 > [ 28.393337] Call Trace: > [ 28.397594] ipoib_get_link_ksettings+0x66/0xe0 [ib_ipoib] > [ 28.405274] __ethtool_get_link_ksettings+0xa0/0x1c0 > [ 28.412353] speed_show+0x74/0xa0 > [ 28.417503] dev_attr_show+0x20/0x50 > [ 28.422922] ? mutex_lock+0x12/0x40 > [ 28.428179] sysfs_kf_seq_show+0xbf/0x1a0 > [ 28.434002] kernfs_seq_show+0x21/0x30 > [ 28.439470] seq_read+0x116/0x3b0 > [ 28.444445] ? do_filp_open+0xa5/0x100 > [ 28.449774] kernfs_fop_read+0xff/0x180 > [ 28.455220] __vfs_read+0x37/0x150 > [ 28.460167] ? security_file_permission+0x9d/0xc0 > [ 28.466560] vfs_read+0x8c/0x130 > [ 28.471318] SyS_read+0x55/0xc0 > [ 28.475950] do_syscall_64+0x67/0x150 > [ 28.481163] entry_SYSCALL64_slow_path+0x25/0x25 > [ 28.487425] RIP: 0033:0x7f9b1bf4a70d > [ 28.492522] RSP: 002b:00007f9aed611a40 EFLAGS: 00000293 ORIG_RAX: > 0000000000000000 > [ 28.502097] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: > 00007f9b1bf4a70d > [ 28.511178] RDX: 0000000000000401 RSI: 00007f9ae8183650 RDI: > 0000000000000017 > [ 28.520261] RBP: 0000000000000401 R08: 0000000000000080 R09: > 0000000000002001 > [ 28.529322] R10: 000000000000006b R11: 0000000000000293 R12: > 00007f9ae8183650 > [ 28.538368] R13: 0000000000000000 R14: 0000000000000017 R15: > 0000000000002001 > [ 28.547432] Code: 55 48 89 e5 41 55 49 89 d5 41 54 44 0f b6 e6 53 48 89 fb > 48 83 e4 f0 48 83 ec 20 65 48 8b 04 25 28 00 00 00 48 89 44 24 18 31 c0 <f6> > 87 7c 06 00 00 01 75 2d 45 85 e4 0f 85 ca 00 00 00 b8 ea ff > [ 28.570861] RIP: ib_query_port+0x30/0x180 [ib_core] RSP: ffffb9ab0f7afbb0 > [ 28.579601] CR2: 000000000000067c > [ 28.584493] ---[ end trace 3549968a4bf0aa5d ]--- > > Fixes: 0d7e2d2166f6 ('IB/ipoib: add get_link_ksettings in ethtool') > > Signed-off-by: Honggang Li <[email protected]> > --- > drivers/infiniband/ulp/ipoib/ipoib_ethtool.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c > b/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c > index 874b243..7871379 100644 > --- a/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c > +++ b/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c > @@ -178,7 +178,7 @@ static inline int ib_speed_enum_to_int(int speed) > static int ipoib_get_link_ksettings(struct net_device *netdev, > struct ethtool_link_ksettings *cmd) > { > - struct ipoib_dev_priv *priv = netdev_priv(netdev); > + struct ipoib_dev_priv *priv = ipoib_priv(netdev); > struct ib_port_attr attr; > int ret, speed, width; >
Suggesting to remove kernel oops from commit log message, fix is trivial. Reviewed-by: Yuval Shaia <[email protected]> > -- > 1.8.3.1 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-rdma" in > the body of a message to [email protected] > More majordomo info at http://vger.kernel.org/majordomo-info.html
