following is test program:
------------------------------------------------
package main
import (
"fmt"
"os"
"os/exec"
"syscall"
)
func main() {
fmt.Printf("Args: %v\n", os.Args)
for {
f1, _ := os.OpenFile("/tmp/aa", os.O_RDWR|os.O_CREATE, 0755)
f2, _ := os.OpenFile("/tmp/bb", os.O_RDWR|os.O_CREATE, 0755)
f3, _ := os.OpenFile("/tmp/cc", os.O_RDWR|os.O_CREATE, 0755)
syscall.CloseOnExec(int(f1.Fd()))
syscall.CloseOnExec(int(f2.Fd()))
syscall.CloseOnExec(int(f3.Fd()))
go func() {
f1.Close()
f2.Close()
f3.Close()
}()
cmd := exec.Command(os.Args[1], os.Args[2:]...)
err := cmd.Start()
if err == nil {
cmd.Wait()
} else {
fmt.Println(err)
}
}
}
------------------------------------
The program run about 1 hour，will：
10月 26 11:14:03 kylin-2321321 kernel: CPU: 2 PID: 3970 Comm: test Tainted:
G D OE 4.4.58-20180615.kylin.server.YUN+-generic #kylin
10月 26 11:14:03 kylin-2321321 kernel: Hardware name: wewqewqewq 2321321/,
BIOS FT-1.0.000 2017-2-24/17:08:23
10月 26 11:14:03 kylin-2321321 kernel: task: ffffffc1d6a88000 ti:
ffffffc768700000 task.ti: ffffffc768700000
10月 26 11:14:03 kylin-2321321 kernel: PC is at filp_close+0x94/0x118
10月 26 11:14:03 kylin-2321321 kernel: LR is at filp_close+0x78/0x118
10月 26 11:14:03 kylin-2321321 kernel: pc : [<ffffffc00024c324>] lr :
[<ffffffc00024c308>] pstate: 00000145
10月 26 11:14:03 kylin-2321321 kernel: sp : ffffffc768703c00
10月 26 11:14:03 kylin-2321321 kernel: x29: ffffffc768703c00 x28:
ffffffc7b9a1e000
10月 26 11:14:03 kylin-2321321 kernel: x27: 0000000000000000 x26:
0000000000000000
10月 26 11:14:03 kylin-2321321 kernel: x25: ffffffc8da470680 x24:
0000000000000000
10月 26 11:14:03 kylin-2321321 kernel: x23: ffffffc8da470600 x22:
0000000000000000
10月 26 11:14:03 kylin-2321321 kernel: x21: 0000000000000001 x20:
ffffffc8da470600
10月 26 11:14:03 kylin-2321321 kernel: x19: ffffffc1d519dd00 x18:
0000000000000000
10月 26 11:14:03 kylin-2321321 kernel: x17: 69622f3a6e696273 x16:
ffffffc000257598
10月 26 11:14:03 kylin-2321321 kernel: x15: 752f3a6e6962732f x14:
00000000000003f0
10月 26 11:14:03 kylin-2321321 kernel: x13: 00000000000003f0 x12:
000000000002cc10
10月 26 11:14:03 kylin-2321321 kernel: x11: 000000000002cc10 x10:
000000000001cc10
10月 26 11:14:03 kylin-2321321 kernel: x9 : 0000000000000000 x8 :
ffffffc1d6a88bc0
10月 26 11:14:03 kylin-2321321 kernel: x7 : 0000000000000000 x6 :
0000000000000407
10月 26 11:14:03 kylin-2321321 kernel: x5 : ffffffc8da470690 x4 :
ffffffc8da470628
10月 26 11:14:03 kylin-2321321 kernel: x3 : 0000000000000000 x2 :
ffffffc1d519dd38
10月 26 11:14:03 kylin-2321321 kernel: x1 : 0000000000000000 x0 :
0000000000000000
10月 26 11:14:03 kylin-2321321 kernel:
10月 26 11:14:03 kylin-2321321 kernel: Process test (pid: 3970, stack limit
= 0xffffffc768700020)
10月 26 11:14:04 kylin-2321321 kernel: Stack: (0xffffffc768703c00 to
0xffffffc768704000)
10月 26 11:14:04 kylin-2321321 kernel: 3c00: ffffffc768703c30
ffffffc00026f7e4 0000000000000001 000000000000000a
10月 26 11:14:04 kylin-2321321 kernel: 3c20: ffffffc8da470628
ffffffc1d519dd00 ffffffc768703c90 ffffffc00025600c
10月 26 11:14:04 kylin-2321321 kernel: 3c40: ffffffc8d7625b00
ffffffc1d6a88000 ffffffc8d7000680 ffffffc8d7625b00
10月 26 11:14:04 kylin-2321321 kernel: 3c60: ffffffc1d6a88690
ffffffc7bac6da00 ffffffc1d6a88400 ffffffc1b9f17a80
10月 26 11:14:04 kylin-2321321 kernel: 3c80: ffffffc7bac6da00
ffffffc000255fe4 ffffffc768703d00 ffffffc0002b0fb8
10月 26 11:14:05 kylin-2321321 kernel: 3ca0: 00000000ffffffb0
ffffffc768700000 ffffffc1b9f17580 ffffffc7bac6db00
10月 26 11:14:05 kylin-2321321 kernel: 3cc0: 0000000000000001
ffffffc7bac6da00 ffffffc193ea1600 ffffffc768700000
10月 26 11:14:05 kylin-2321321 kernel: 3ce0: ffffffc1b9f17580
ffffffc7bac6db00 0000000000000001 0000000000000040
10月 26 11:14:05 kylin-2321321 kernel: 3d00: ffffffc768703dd0
ffffffc00025642c ffffffc7bac6da00 ffffffc001ce1528
10月 26 11:14:05 kylin-2321321 kernel: 3d20: ffffffc001e46ba0
ffffffc001cd49a8 ffffffc001e46000 ffffffc001cd4000
10月 26 11:14:05 kylin-2321321 kernel: 3d40: 00000000fffffff8
0000000000000000 ffffffc7bac6da00 ffffffc00025599c
10月 26 11:14:06 kylin-2321321 kernel: 3d60: 000000000000085f
0000000000000000 0000000000000000 0000000000000000
10月 26 11:14:06 kylin-2321321 kernel: 3d80: ffffffc768703da0
ffffffc00038ef50 ffffffc001cf0c88 0000000000001000
10月 26 11:14:06 kylin-2321321 kernel: 3da0: ffffffc768703dd0
ffffffc0002563fc ffffffc7bac6da00 ffffffc001ce1528
10月 26 11:14:06 kylin-2321321 kernel: 3dc0: ffffffc7bac6da00
ffffffc193ea3c00 ffffffc768703e20 ffffffc000257138
10月 26 11:14:06 kylin-2321321 kernel: 3de0: ffffffc07b917000
ffffffc1d6a88000 0000000000000000 0000000000000f82
10月 26 11:14:06 kylin-2321321 kernel: 3e00: 0000000000000f82
0000000000000000 00000040005cb6c0 ffffffbdcc8588c0
10月 26 11:14:06 kylin-2321321 kernel: 3e20: ffffffc768703ea0
ffffffc0002575e4 0000004000486468 00000040005cb6c0
10月 26 11:14:07 kylin-2321321 kernel: 3e40: 00000040002a2df0
00000000000903c0 0000000020000000 0000000000000015
10月 26 11:14:07 kylin-2321321 kernel: 3e60: 000000000000011d
00000000000000dd ffffffc000a2a000 ffffffc768700000
10月 26 11:14:07 kylin-2321321 kernel: 3e80: ffffffc768703ea0
ffffffc8d70006e8 0000004000486468 0000000000000000
10月 26 11:14:07 kylin-2321321 kernel: 3ea0: 0000004000104878
ffffffc000085470 0000000000000000 0000004000104ac0
10月 26 11:14:07 kylin-2321321 kernel: 3ec0: ffffffffffffffff
00000000000903c0 00000040002a2df0 0000004000486468
10月 26 11:14:07 kylin-2321321 kernel: 3ee0: 00000040005cb6c0
0000000000000000 0000000000000000 0000000000000000
10月 26 11:14:09 kylin-2321321 kernel: 3fa0: 00000000000d2818
00000000001a8d8a 0000004000000340 0000004000104878
10月 26 11:14:09 kylin-2321321 kernel: 3fc0: 000000000008da60
0000004000104880 00000000000903c0 0000000020000000
10月 26 11:14:09 kylin-2321321 kernel: 3fe0: 00000040002a2df0
00000000000000dd 77732f7665642f22 336963702d6d7363
10月 26 11:14:09 kylin-2321321 kernel: Call trace:
10月 26 11:14:09 kylin-2321321 kernel: [<ffffffc00024c324>]
filp_close+0x94/0x118
10月 26 11:14:09 kylin-2321321 kernel: [<ffffffc00026f7e4>]
do_close_on_exec+0xac/0x110
10月 26 11:14:09 kylin-2321321 kernel: [<ffffffc00025600c>]
flush_old_exec+0x45c/0x640
10月 26 11:14:09 kylin-2321321 kernel: [<ffffffc0002b0fb8>]
load_elf_binary+0x228/0xd10
10月 26 11:14:09 kylin-2321321 kernel: [<ffffffc00025642c>]
search_binary_handler+0xa4/0x2c0
10月 26 11:14:09 kylin-2321321 kernel: [<ffffffc000257138>]
do_execveat_common.isra.15+0x580/0x728
10月 26 11:14:09 kylin-2321321 kernel: [<ffffffc0002575e4>]
SyS_execve+0x4c/0x60
10月 26 11:14:09 kylin-2321321 kernel: [<ffffffc000085470>]
el0_svc_naked+0x24/0x28
10月 26 11:14:09 kylin-2321321 kernel: Code: b9404260 f240041f 540000c0
f9400e60 (b9400001)
10月 26 11:14:09 kylin-2321321 kernel: ---[ end trace 928dde36b78ef3d6 ]---
I am not sure， this is bug of golang or bug of the test program ?
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