function q1
alias sq1="ssh -p 8000 127.0.0.1"# vncviewer :1輸入
# gdbserver tcp::1234$ gdb vmlinux
gnu gdb (gdb) 8.0.50.20171229-git
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this gdb was configured as "x86_64-pc-linux-gnu".
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type "apropos word" to search for commands related to "word"...
reading symbols from vmlinux...done.
(gdb) target remote :1234
remote debugging using :1234
0xffffffff8175db46 in cpu_idle_poll () at kernel/sched/idle.c:71
71 trace_cpu_idle_rcuidle(pwr_event_exit, smp_processor_id());
(gdb) lx-symbols
loading vmlinux
scanning for modules in /home1/chrism/linux
loading @0xffffffffa057e000: /home1/chrism/linux/fs/nfs/nfsv3.ko
loading @0xffffffffa03de000: /home1/chrism/linux/fs/nfs_common/nfs_acl.ko
loading @0xffffffffa041f000: /home1/chrism/linux/net/sunrpc/auth_gss/rpcsec_gss_krb5.ko
loading @0xffffffffa03f7000: /home1/chrism/linux/net/sunrpc/auth_gss/auth_rpcgss.ko
loading @0xffffffffa0716000: /home1/chrism/linux/fs/nfs/nfsv4.ko
loading @0xffffffffa026a000: /home1/chrism/linux/net/dns_resolver/dns_resolver.ko
loading @0xffffffffa06d9000: /home1/chrism/linux/fs/nfs/nfs.ko
loading @0xffffffffa0567000: /home1/chrism/linux/fs/lockd/lockd.ko
loading @0xffffffffa025a000: /home1/chrism/linux/fs/nfs_common/grace.ko
loading @0xffffffffa046f000: /home1/chrism/linux/fs/fscache/fscache.ko
loading @0xffffffffa0642000: /home1/chrism/linux/net/wireless/cfg80211.ko
loading @0xffffffffa01c2000: /home1/chrism/linux/net/rfkill/rfkill.ko
loading @0xffffffffa058d000: /home1/chrism/linux/net/sunrpc/sunrpc.ko
loading @0xffffffffa0497000: /home1/chrism/linux/fs/ext4/ext4.ko
loading @0xffffffffa0255000: /home1/chrism/linux/fs/mbcache.ko
loading @0xffffffffa0455000: /home1/chrism/linux/fs/jbd2/jbd2.ko
loading @0xffffffffa0484000: /home1/chrism/linux/sound/pci/hda/snd-hda-codec-generic.ko
loading @0xffffffffa01ab000: /home1/chrism/linux/arch/x86/crypto/crct10dif-pclmul.ko
loading @0xffffffffa041a000: /home1/chrism/linux/arch/x86/crypto/crc32-pclmul.ko
loading @0xffffffffa025f000: /home1/chrism/linux/sound/pci/hda/snd-hda-intel.ko
loading @0xffffffffa01db000: /home1/chrism/linux/arch/x86/crypto/ghash-clmulni-intel.ko
...
(gdb) b mlx5e_xmit
breakpoint 2 at 0xffffffffa0215f50: file drivers/net/ethernet/mellanox/mlx5/core/en_tx.c, line 371.
(gdb) c
continuing.
thread 7 hit breakpoint 2, mlx5e_xmit (skb=0xffff8801277e0200, dev=0xffff8801225c0000) at drivers/net/ethernet/mellanox/mlx5/core/en_tx.c:371
371 ,
# virsh edit vm1需要說明的是，虛擬機器需要重新編譯核心，加上如下選項：
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