On Fri, Feb 15, 2019 at 5:37 AM Kefeng Wang <wangkefeng.w...@huawei.com> wrote: > > With CONFIG_DEBUG_SPINLOCK=y, we find following stack, > > BUG: spinlock wrong CPU on CPU#0, ip/16047 > lock: 0xffff803f5febc998, .magic: dead4ead, .owner: ip/16047, .owner_cpu: 0 > CPU: 1 PID: 16047 Comm: ip Kdump: loaded Tainted: G E > 4.19.12.aarch64 #1 > Hardware name: Huawei TaiShan 2280 V2/BC82AMDA, BIOS TA BIOS TaiShan 2280 V2 > - B900 01/29/2019 > Call trace: > dump_backtrace+0x0/0x1c0 > show_stack+0x24/0x30 > dump_stack+0x90/0xbc > spin_dump+0x84/0xa8 > do_raw_spin_unlock+0xf8/0x100 > _raw_spin_unlock+0x20/0x30 > bond_get_stats+0x110/0x140 [bonding] > rtnl_fill_stats+0x50/0x150 > rtnl_fill_ifinfo+0x4d4/0xd18 > rtnl_dump_ifinfo+0x200/0x3a8 > netlink_dump+0x100/0x2b0 > netlink_recvmsg+0x310/0x3e8 > sock_recvmsg+0x58/0x68 > ___sys_recvmsg+0xd0/0x278 > __sys_recvmsg+0x74/0xd0 > __arm64_sys_recvmsg+0x2c/0x38 > el0_svc_common+0x7c/0x118 > el0_svc_handler+0x30/0x40 > el0_svc+0x8/0xc > > and then lead to softlockup issue, fix this by using mutex lock instead > of spin lock. > > Signed-off-by: Kefeng Wang <wangkefeng.w...@huawei.com> > --- > > Not sure if this is right fix, please correct me if I'm wrong. >
Make sure to also try : cat /proc/net/dev
