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feat: add smap blocklist for some oracle linux kernels

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This commit is contained in:
dump_stack() 2023-06-01 06:26:40 +00:00
parent b0b19d87ca
commit 482378abaf
Signed by: dump_stack
GPG Key ID: BE44DA8C062D87DC
1 changed files with 31 additions and 0 deletions
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31
distro/oraclelinux/oraclelinux.go
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@ -79,6 +79,29 @@ func (ol OracleLinux) Kernels() (kernels []distro.KernelInfo, err error) {
return
}
// Some kernels do not work with the smap enabled
//
// BUG: unable to handle kernel paging request at 00007fffc64b2fda
// IP: [<ffffffff8127a9ed>] strnlen+0xd/0x40"
// ...
// Call Trace:
// [<ffffffff81123bf8>] dtrace_psinfo_alloc+0x138/0x390
// [<ffffffff8118b143>] do_execve_common.isra.24+0x3c3/0x460
// [<ffffffff81554d70>] ? rest_init+0x80/0x80
// [<ffffffff8118b1f8>] do_execve+0x18/0x20
// [<ffffffff81554dc2>] kernel_init+0x52/0x180
// [<ffffffff8157cd2c>] ret_from_fork+0x7c/0xb0
//
smapBlocklist := []string{
"3.8.13-16",
"3.8.13-26",
"3.8.13-35",
"3.8.13-44",
"3.8.13-55",
"3.8.13-68",
"3.8.13-98",
}
for i, k := range kernels {
// The latest uek kernels require gcc-11, which is
// only present in el8 with scl load, so not so
@ -88,6 +111,14 @@ func (ol OracleLinux) Kernels() (kernels []distro.KernelInfo, err error) {
cnt := strings.Replace(k.ContainerName, "8", "9", -1)
kernels[i].ContainerName = cnt
}
for _, ver := range smapBlocklist {
if strings.Contains(k.KernelVersion, ver) {
kernels[i].CPU.Flags = append(
kernels[i].CPU.Flags, "smap=off",
)
}
}
}
return