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netperf: UML vector/tap driver (code: https://github.com/thehajime/linux/tree/9872bf8a936557fdc0f3a6bd7547da28bea6d5ae)
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| +--docker0--+ | |
| | | 10GbEth | |
| netperf +---tap0 eth0 +==========+ eth0 +---+ netserver | |
| (client) (ixgbe) (ixgbe) | |
| <-- Linux box (4.18.5) --> <-- Linux box (4.17.19) --> | |
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| % for file in {lkl-hijack-um-tap.json,./lkl-hijack-vec-tap.json,lkl-hijack-virtio-tap.json}; do \ | |
| echo "==== $file ====" ; \ | |
| LKL_HIJACK_CONFIG_FILE=$file ./obj-x86/tools/lkl/bin/lkl-hijack.sh netperf -H 10.0.39.2 -- \ | |
| -o ELAPSED_TIME,THROUGHPUT,THROUGHPUT_UNITS ; \ | |
| LKL_HIJACK_CONFIG_FILE=$file ./obj-x86/tools/lkl/bin/lkl-hijack.sh netperf -H 10.0.39.2 -t TCP_MAERTS \ | |
| -- -o ELAPSED_TIME,THROUGHPUT,THROUGHPUT_UNITS; \ | |
| done | |
| ==== lkl-hijack-um-tap.json ==== | |
| MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.0.39.2 () port 0 AF_INET : demo | |
| Elapsed Time (sec),Throughput,Throughput Units | |
| 10.01,2290.42,10^6bits/s | |
| MIGRATED TCP MAERTS TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.0.39.2 () port 0 AF_INET : demo | |
| Elapsed Time (sec),Throughput,Throughput Units | |
| 10.03,1.04,10^6bits/s | |
| ==== ./lkl-hijack-vec-tap.json ==== | |
| MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.0.39.2 () port 0 AF_INET : demo | |
| Elapsed Time (sec),Throughput,Throughput Units | |
| 10.01,3699.98,10^6bits/s | |
| MIGRATED TCP MAERTS TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.0.39.2 () port 0 AF_INET : demo | |
| Elapsed Time (sec),Throughput,Throughput Units | |
| 10.00,5682.40,10^6bits/s | |
| ==== lkl-hijack-virtio-tap.json ==== | |
| MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.0.39.2 () port 0 AF_INET : demo | |
| Elapsed Time (sec),Throughput,Throughput Units | |
| 10.01,8029.13,10^6bits/s | |
| MIGRATED TCP MAERTS TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.0.39.2 () port 0 AF_INET : demo | |
| Elapsed Time (sec),Throughput,Throughput Units | |
| 10.00,9384.78,10^6bits/s | |
| ==> lkl-hijack-um-tap.json <== | |
| { | |
| "gateway": "172.17.0.1", | |
| "interfaces": [ | |
| { | |
| "ip": "172.17.0.39", | |
| "masklen": "16", | |
| "param": "tuntap,tap0,01:11:22:33:44:55", | |
| "type": "um" | |
| } | |
| ], | |
| "debug": "0", | |
| "singlecpu": "1", | |
| "boot_cmdline": "mem=1G", | |
| "sysctl": "net.ipv4.tcp_wmem=4096 87380 16777216" | |
| } | |
| ==> lkl-hijack-vec-tap.json <== | |
| { | |
| "gateway": "172.17.0.1", | |
| "interfaces": [ | |
| { | |
| "ip": "172.17.0.39", | |
| "masklen": "16", | |
| "param": "transport=tap,ifname=tap0,gro=1", | |
| "type": "um" | |
| } | |
| ], | |
| "debug": "0", | |
| "singlecpu": "1", | |
| "boot_cmdline": "mem=1G", | |
| "sysctl": "net.ipv4.tcp_wmem=4096 87380 16777216" | |
| } | |
| ==> lkl-hijack-virtio-tap.json <== | |
| { | |
| "gateway": "172.17.0.1", | |
| "interfaces": [ | |
| { | |
| "ip": "172.17.0.39", | |
| "masklen": "16", | |
| "param": "tap0", | |
| "type": "tap", | |
| "offload": "0xc803" | |
| } | |
| ], | |
| "debug": "0", | |
| "singlecpu": "1", | |
| "boot_cmdline": "mem=1G", | |
| "sysctl": "net.ipv4.tcp_wmem=4096 87380 16777216" | |
| } |
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| #!/bin/sh | |
| ifconfig vec0 up | |
| ip ad add 172.17.0.39/16 dev vec0 | |
| ip route add default via 172.17.0.1 | |
| sleep 2 | |
| /usr/local/bin/ethtool -k vec0 | |
| /usr/local/bin/netperf -H 10.0.39.2 -- -o ELAPSED_TIME,THROUGHPUT,THROUGHPUT_UNITS | |
| /usr/local/bin/netperf -H 10.0.39.2 -t TCP_MAERTS -- -o ELAPSED_TIME,THROUGHPUT,THROUGHPUT_UNITS |
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| Core dump limits : | |
| soft - NONE | |
| hard - NONE | |
| Checking that ptrace can change system call numbers...OK | |
| Checking syscall emulation patch for ptrace...OK | |
| Checking advanced syscall emulation patch for ptrace...OK | |
| Checking environment variables for a tempdir...none found | |
| Checking if /dev/shm is on tmpfs...OK | |
| Checking PROT_EXEC mmap in /dev/shm...OK | |
| Adding 22847488 bytes to physical memory to account for exec-shield gap | |
| Linux version 5.5.0-rc6-00047-ge9396182d667-dirty (tazaki@zakzak3.iijlab.net) (gcc version 8.3.1 20190223 (Red Hat 8.3.1-2) (GCC)) #14 Tue Feb 18 11:48:31 JST 2020 | |
| Built 1 zonelists, mobility grouping on. Total pages: 13581 | |
| Kernel command line: root=/dev/root rootfstype=hostfs rootflags=/home/tazaki/work/um-lkl/obj-x86-um/../../uml-rootfs/ ro init=/bin/netperf.sh eth0=tuntap,tap0, | |
| Dentry cache hash table entries: 8192 (order: 4, 65536 bytes, linear) | |
| Inode-cache hash table entries: 4096 (order: 3, 32768 bytes, linear) | |
| mem auto-init: stack:off, heap alloc:off, heap free:off | |
| Memory: 27448K/55080K available (2399K kernel code, 753K rwdata, 952K rodata, 101K init, 160K bss, 27632K reserved, 0K cma-reserved) | |
| NR_IRQS: 24 | |
| clocksource: timer: mask: 0xffffffffffffffff max_cycles: 0x1cd42e205, max_idle_ns: 881590404426 ns | |
| Calibrating delay loop... 8342.73 BogoMIPS (lpj=41713664) | |
| pid_max: default: 32768 minimum: 301 | |
| Mount-cache hash table entries: 512 (order: 0, 4096 bytes, linear) | |
| Mountpoint-cache hash table entries: 512 (order: 0, 4096 bytes, linear) | |
| Checking that host ptys support output SIGIO...Yes | |
| Checking that host ptys support SIGIO on close...No, enabling workaround | |
| devtmpfs: initialized | |
| random: get_random_u32 called from bucket_table_alloc+0xe6/0x10f with crng_init=0 | |
| umid_file_name : buffer too short | |
| clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns | |
| futex hash table entries: 256 (order: 0, 6144 bytes, linear) | |
| NET: Registered protocol family 16 | |
| clocksource: Switched to clocksource timer | |
| VFS: Disk quotas dquot_6.6.0 | |
| VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes) | |
| NET: Registered protocol family 2 | |
| tcp_listen_portaddr_hash hash table entries: 256 (order: 0, 4096 bytes, linear) | |
| TCP established hash table entries: 512 (order: 0, 4096 bytes, linear) | |
| TCP bind hash table entries: 512 (order: 0, 4096 bytes, linear) | |
| TCP: Hash tables configured (established 512 bind 512) | |
| UDP hash table entries: 256 (order: 1, 8192 bytes, linear) | |
| UDP-Lite hash table entries: 256 (order: 1, 8192 bytes, linear) | |
| NET: Registered protocol family 1 | |
| printk: console [stderr0] disabled | |
| mconsole (version 2) initialized on /home/tazaki/.uml/lMl3OJ/mconsole | |
| Checking host MADV_REMOVE support...OK | |
| workingset: timestamp_bits=62 max_order=13 bucket_order=0 | |
| io scheduler mq-deadline registered | |
| io scheduler kyber registered | |
| NET: Registered protocol family 17 | |
| Initialized stdio console driver | |
| Console initialized on /dev/tty0 | |
| printk: console [tty0] enabled | |
| Initializing software serial port version 1 | |
| printk: console [mc-1] enabled | |
| Failed to initialize ubd device 0 :Couldn't determine size of device's file | |
| Choosing a random ethernet address for device eth0 | |
| Netdevice 0 (c2:02:40:af:5a:d2) : | |
| TUN/TAP backend - | |
| VFS: Mounted root (hostfs filesystem) readonly on device 0:12. | |
| devtmpfs: mounted | |
| This architecture does not have kernel memory protection. | |
| Run /bin/netperf.sh as init process | |
| Features for eth0: | |
| Cannot get device udp-fragmentation-offload settings: Not supported | |
| rx-checksumming: off [fixed] | |
| tx-checksumming: off | |
| tx-checksum-ipv4: off [fixed] | |
| tx-checksum-ip-generic: off [fixed] | |
| tx-checksum-ipv6: off [fixed] | |
| tx-checksum-fcoe-crc: off [fixed] | |
| tx-checksum-sctp: off [fixed] | |
| scatter-gather: off | |
| tx-scatter-gather: off [fixed] | |
| tx-scatter-gather-fraglist: off [fixed] | |
| tcp-segmentation-offload: off | |
| tx-tcp-segmentation: off [fixed] | |
| tx-tcp-ecn-segmentation: off [fixed] | |
| tx-tcp-mangleid-segmentation: off [fixed] | |
| tx-tcp6-segmentation: off [fixed] | |
| udp-fragmentation-offload: off | |
| generic-segmentation-offload: off [requested on] | |
| generic-receive-offload: on | |
| large-receive-offload: off [fixed] | |
| rx-vlan-offload: off [fixed] | |
| tx-vlan-offload: off [fixed] | |
| ntuple-filters: off [fixed] | |
| receive-hashing: off [fixed] | |
| highdma: off [fixed] | |
| rx-vlan-filter: off [fixed] | |
| vlan-challenged: off [fixed] | |
| tx-lockless: off [fixed] | |
| netns-local: off [fixed] | |
| tx-gso-robust: off [fixed] | |
| tx-fcoe-segmentation: off [fixed] | |
| tx-gre-segmentation: off [fixed] | |
| tx-gre-csum-segmentation: off [fixed] | |
| tx-ipxip4-segmentation: off [fixed] | |
| tx-ipxip6-segmentation: off [fixed] | |
| tx-udp_tnl-segmentation: off [fixed] | |
| tx-udp_tnl-csum-segmentation: off [fixed] | |
| tx-gso-partial: off [fixed] | |
| tx-sctp-segmentation: off [fixed] | |
| tx-esp-segmentation: off [fixed] | |
| tx-udp-segmentation: off [fixed] | |
| fcoe-mtu: off [fixed] | |
| tx-nocache-copy: off | |
| loopback: off [fixed] | |
| rx-fcs: off [fixed] | |
| rx-all: off [fixed] | |
| tx-vlan-stag-hw-insert: off [fixed] | |
| rx-vlan-stag-hw-parse: off [fixed] | |
| rx-vlan-stag-filter: off [fixed] | |
| l2-fwd-offload: off [fixed] | |
| hw-tc-offload: off [fixed] | |
| esp-hw-offload: off [fixed] | |
| esp-tx-csum-hw-offload: off [fixed] | |
| rx-udp_tunnel-port-offload: off [fixed] | |
| tls-hw-tx-offload: off [fixed] | |
| tls-hw-rx-offload: off [fixed] | |
| rx-gro-hw: off [fixed] | |
| tls-hw-record: off [fixed] | |
| random: netperf: uninitialized urandom read (16 bytes read) | |
| MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.0.39.2 (10.0.39) port 0 AF_INET | |
| random: fast init done | |
| random: crng init done | |
| Elapsed Time (sec),Throughput,Throughput Units | |
| 10.00,2233.17,10^6bits/s | |
| MIGRATED TCP MAERTS TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.0.39.2 (10.0.39) port 0 AF_INET | |
| Elapsed Time (sec),Throughput,Throughput Units | |
| 10.00,7.85,10^6bits/s | |
| Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000000 | |
| CPU: 0 PID: 1 Comm: netperf.sh Not tainted 5.5.0-rc6-00047-ge9396182d667-dirty #14 | |
| Stack: | |
| 6302bce0 6025baaa 00000001 63026000 | |
| 602ea818 00000001 6302bcf0 6025bad5 | |
| 6302bdf0 6002f977 631b2aa0 3000000010 | |
| Call Trace: | |
| [<60016877>] show_stack+0xff/0x116 | |
| [<6025baaa>] ? dump_stack_print_info+0xa8/0xb1 | |
| [<6025bad5>] dump_stack+0x17/0x19 | |
| [<6002f977>] panic+0x12c/0x2a7 | |
| [<60051c9f>] ? __percpu_up_read+0x13/0x15 | |
| [<60036eb4>] ? percpu_up_read.constprop.57+0x23/0x25 | |
| [<600392d5>] ? exit_signals+0x7c/0xcf | |
| [<60030c10>] do_exit+0x1ab/0x75e | |
| [<600c6e0b>] ? __fdget+0xe/0x10 | |
| [<600af92c>] ? fdput_pos.isra.26+0x25/0x2c | |
| [<60031dec>] sys_exit_group+0x0/0xf | |
| [<60031dfb>] __wake_up_parent+0x0/0x1e | |
| [<600182c3>] handle_syscall+0x6b/0x8b | |
| [<6002a3e5>] userspace+0x391/0x3f1 | |
| [<60015958>] new_thread_handler+0xa2/0xa4 |
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| zakzak3:~/work/um-lkl/obj-x86-um% ./linux root=/dev/root rootfstype=hostfs rootflags=`pwd`/../../uml-rootfs/ mem=512M ro init='/bin/netperf.sh' vec0:transport=tap,ifname=tap0,gro=1 | |
| Core dump limits : | |
| soft - NONE | |
| hard - NONE | |
| Checking that ptrace can change system call numbers...OK | |
| Checking syscall emulation patch for ptrace...OK | |
| Checking advanced syscall emulation patch for ptrace...OK | |
| Checking environment variables for a tempdir...none found | |
| Checking if /dev/shm is on tmpfs...OK | |
| Checking PROT_EXEC mmap in /dev/shm...OK | |
| Adding 19533824 bytes to physical memory to account for exec-shield gap | |
| Linux version 5.5.0-rc6-00047-ge9396182d667-dirty (tazaki@zakzak3.iijlab.net) (gcc version 8.3.1 20190223 (Red Hat 8.3.1-2) (GCC)) #14 Tue Feb 18 11:48:31 JST 2020 | |
| Built 1 zonelists, mobility grouping on. Total pages: 133983 | |
| Kernel command line: root=/dev/root rootfstype=hostfs rootflags=/home/tazaki/work/um-lkl/obj-x86-um/../../uml-rootfs/ mem=512M ro init=/bin/netperf.sh vec0:transport=tap,ifname=tap0,gro=1 | |
| Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes, linear) | |
| Inode-cache hash table entries: 65536 (order: 7, 524288 bytes, linear) | |
| mem auto-init: stack:off, heap alloc:off, heap free:off | |
| Memory: 510864K/543364K available (2399K kernel code, 753K rwdata, 952K rodata, 101K init, 160K bss, 32500K reserved, 0K cma-reserved) | |
| NR_IRQS: 24 | |
| clocksource: timer: mask: 0xffffffffffffffff max_cycles: 0x1cd42e205, max_idle_ns: 881590404426 ns | |
| Calibrating delay loop... 8350.92 BogoMIPS (lpj=41754624) | |
| pid_max: default: 32768 minimum: 301 | |
| Mount-cache hash table entries: 2048 (order: 2, 16384 bytes, linear) | |
| Mountpoint-cache hash table entries: 2048 (order: 2, 16384 bytes, linear) | |
| Checking that host ptys support output SIGIO...Yes | |
| Checking that host ptys support SIGIO on close...No, enabling workaround | |
| devtmpfs: initialized | |
| random: get_random_u32 called from bucket_table_alloc+0xe6/0x10f with crng_init=0 | |
| umid_file_name : buffer too short | |
| clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns | |
| futex hash table entries: 256 (order: 0, 6144 bytes, linear) | |
| NET: Registered protocol family 16 | |
| clocksource: Switched to clocksource timer | |
| VFS: Disk quotas dquot_6.6.0 | |
| VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes) | |
| NET: Registered protocol family 2 | |
| tcp_listen_portaddr_hash hash table entries: 512 (order: 1, 8192 bytes, linear) | |
| TCP established hash table entries: 8192 (order: 4, 65536 bytes, linear) | |
| TCP bind hash table entries: 8192 (order: 4, 65536 bytes, linear) | |
| TCP: Hash tables configured (established 8192 bind 8192) | |
| UDP hash table entries: 512 (order: 2, 16384 bytes, linear) | |
| UDP-Lite hash table entries: 512 (order: 2, 16384 bytes, linear) | |
| NET: Registered protocol family 1 | |
| printk: console [stderr0] disabled | |
| mconsole (version 2) initialized on /home/tazaki/.uml/Yphfcl/mconsole | |
| Checking host MADV_REMOVE support...OK | |
| workingset: timestamp_bits=62 max_order=17 bucket_order=0 | |
| io scheduler mq-deadline registered | |
| io scheduler kyber registered | |
| NET: Registered protocol family 17 | |
| Initialized stdio console driver | |
| Console initialized on /dev/tty0 | |
| printk: console [tty0] enabled | |
| Initializing software serial port version 1 | |
| Choosing a random ethernet address for device vec0 | |
| printk: console [mc-1] enabled | |
| Failed to initialize ubd device 0 :Couldn't determine size of device's file | |
| VFS: Mounted root (hostfs filesystem) readonly on device 0:12. | |
| devtmpfs: mounted | |
| This architecture does not have kernel memory protection. | |
| Run /bin/netperf.sh as init process | |
| sysctl: can't change directory to '/proc/sys': No such file or directory | |
| uml-vector uml-vector.0 vec0: tap: using vnet headers for tso and tx/rx checksum | |
| Features for vec0: | |
| Cannot get device udp-fragmentation-offload settings: Not supported | |
| rx-checksumming: on [fixed] | |
| tx-checksumming: on | |
| tx-checksum-ipv4: off [fixed] | |
| tx-checksum-ip-generic: on [fixed] | |
| tx-checksum-ipv6: off [fixed] | |
| tx-checksum-fcoe-crc: off [fixed] | |
| tx-checksum-sctp: off [fixed] | |
| scatter-gather: on | |
| tx-scatter-gather: on | |
| tx-scatter-gather-fraglist: on | |
| tcp-segmentation-offload: on | |
| tx-tcp-segmentation: on [requested off] | |
| tx-tcp-ecn-segmentation: off [fixed] | |
| tx-tcp-mangleid-segmentation: off [fixed] | |
| tx-tcp6-segmentation: off [fixed] | |
| udp-fragmentation-offload: off | |
| generic-segmentation-offload: on | |
| generic-receive-offload: on | |
| large-receive-offload: off [fixed] | |
| rx-vlan-offload: off [fixed] | |
| tx-vlan-offload: off [fixed] | |
| ntuple-filters: off [fixed] | |
| receive-hashing: off [fixed] | |
| highdma: off [fixed] | |
| rx-vlan-filter: off [fixed] | |
| vlan-challenged: off [fixed] | |
| tx-lockless: off [fixed] | |
| netns-local: off [fixed] | |
| tx-gso-robust: off [fixed] | |
| tx-fcoe-segmentation: off [fixed] | |
| tx-gre-segmentation: off [fixed] | |
| tx-gre-csum-segmentation: off [fixed] | |
| tx-ipxip4-segmentation: off [fixed] | |
| tx-ipxip6-segmentation: off [fixed] | |
| tx-udp_tnl-segmentation: off [fixed] | |
| tx-udp_tnl-csum-segmentation: off [fixed] | |
| tx-gso-partial: off [fixed] | |
| tx-sctp-segmentation: off [fixed] | |
| tx-esp-segmentation: off [fixed] | |
| tx-udp-segmentation: off [fixed] | |
| fcoe-mtu: off [fixed] | |
| tx-nocache-copy: off | |
| loopback: off [fixed] | |
| rx-fcs: off [fixed] | |
| rx-all: off [fixed] | |
| tx-vlan-stag-hw-insert: off [fixed] | |
| rx-vlan-stag-hw-parse: off [fixed] | |
| rx-vlan-stag-filter: off [fixed] | |
| l2-fwd-offload: off [fixed] | |
| hw-tc-offload: off [fixed] | |
| esp-hw-offload: off [fixed] | |
| esp-tx-csum-hw-offload: off [fixed] | |
| rx-udp_tunnel-port-offload: off [fixed] | |
| tls-hw-tx-offload: off [fixed] | |
| tls-hw-rx-offload: off [fixed] | |
| rx-gro-hw: off [fixed] | |
| tls-hw-record: off [fixed] | |
| random: netperf: uninitialized urandom read (16 bytes read) | |
| MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.0.39.2 (10.0.39) port 0 AF_INET | |
| random: fast init done | |
| random: crng init done | |
| Elapsed Time (sec),Throughput,Throughput Units | |
| 10.00,5527.37,10^6bits/s | |
| MIGRATED TCP MAERTS TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.0.39.2 (10.0.39) port 0 AF_INET | |
| uml-vector uml-vector.0 vec0: vector_rx: error(1524) | |
| uml-vector uml-vector.0 vec0: vector_rx: device stuck, remote end may have closed the connection | |
| uml-vector uml-vector.0 vec0: vector_rx: error(1524) | |
| uml-vector uml-vector.0 vec0: vector_rx: device stuck, remote end may have closed the connection | |
| Elapsed Time (sec),Throughput,Throughput Units | |
| 10.00,9414.00,10^6bits/s | |
| Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000000 | |
| CPU: 0 PID: 1 Comm: netperf.sh Not tainted 5.5.0-rc6-00047-ge9396182d667-dirty #14 | |
| Stack: | |
| 80437ce0 6025baaa 00000001 8042a000 | |
| 602ea818 00000001 80437cf0 6025bad5 | |
| 80437df0 6002f977 805d1aa0 3000000010 | |
| Call Trace: | |
| [<60016877>] show_stack+0xff/0x116 | |
| [<6025baaa>] ? dump_stack_print_info+0xa8/0xb1 | |
| [<6025bad5>] dump_stack+0x17/0x19 | |
| [<6002f977>] panic+0x12c/0x2a7 | |
| [<60051c9f>] ? __percpu_up_read+0x13/0x15 | |
| [<60036eb4>] ? percpu_up_read.constprop.57+0x23/0x25 | |
| [<600392d5>] ? exit_signals+0x7c/0xcf | |
| [<60030c10>] do_exit+0x1ab/0x75e | |
| [<600c6e0b>] ? __fdget+0xe/0x10 | |
| [<600af92c>] ? fdput_pos.isra.26+0x25/0x2c | |
| [<60031dec>] sys_exit_group+0x0/0xf | |
| [<60031dfb>] __wake_up_parent+0x0/0x1e | |
| [<600182c3>] handle_syscall+0x6b/0x8b | |
| [<6002a3e5>] userspace+0x391/0x3f1 | |
| [<60015958>] new_thread_handler+0xa2/0xa4 | |
| zsh: abort (core dumped) ./linux root=/dev/root rootfstype=hostfs rootflags=`pwd`/../../uml-rootfs/ r | |
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