【openEuler-1.0-LTS】同步 5.10 测试问题：KCSAN: data-race in __seccomp_filter / copy_process · Issue #I5LCBR · openEuler/kernel - Gitee.com

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2022-08-09 09:31

同步自 OLK-5.10，openEuler-22.03-LTS：
#I5LLC6:【OLK-5.10】【openEuler-22.03-LTS】同步 5.10 测试问题：KCSAN: data-race in __seccomp_filter / copy_process

问题的描述、分析和处理，请参照上述 issue。

创建了任务

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同步 OLK-5.10，openEuler-22.03-LTS：
#I5LLC6:【OLK-5.10】【openEuler-22.03-LTS】同步 5.10 测试问题：KCSAN: data-race in __seccomp_filter / copy_process

关联了任务(普通)【OLK-5.10】【openEuler-22.03-LTS】同步 5.10 测试问题：KCSAN: data-race in __seccomp_filter / copy_process

关联了src-openEuler/kernel Pull Request !709

关联了src-openEuler/kernel Pull Request !708

修改了描述

原值

<!-- #请根据issue的类型在标题右侧下拉框中选择对应的选项（需求、缺陷或CVE等）-->

<!-- #请根据issue相关的版本在里程碑中选择对应的节点，若是与版本无关，请选择“不关联里程碑”-->

新值

<!-- #请根据issue的类型在标题右侧下拉框中选择对应的选项（需求、缺陷或CVE等）-->

<!-- #请根据issue相关的版本在里程碑中选择对应的节点，若是与版本无关，请选择“不关联里程碑”-->

## 问题来源

公司内部对 5.10 的 syzkaller KCSAN 测试。报错信息：

```

==================================================================

BUG: KCSAN: data-race in __seccomp_filter / copy_process

read-write to 0xffff9e20d0a3b308 of 4 bytes by task 25128 on cpu 3:

 copy_process+0x18ce/0x1db0 kernel/fork.c:2320

 kernel_clone+0x155/0x600 kernel/fork.c:2495

 __do_sys_clone kernel/fork.c:2612 [inline]

 __se_sys_clone kernel/fork.c:2596 [inline]

 __x64_sys_clone+0xc8/0xf0 kernel/fork.c:2596

 do_syscall_64+0x37/0x50 arch/x86/entry/common.c:46

 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffff9e20d0a3b308 of 4 bytes by task 25131 on cpu 0:

 get_nr_threads include/linux/sched/signal.h:655 [inline]

 __seccomp_filter+0xc9b/0xdc0 kernel/seccomp.c:1263

 __secure_computing+0x8f/0x140 kernel/seccomp.c:1311

 syscall_trace_enter kernel/entry/common.c:58 [inline]

 __syscall_enter_from_user_work kernel/entry/common.c:81 [inline]

 syscall_enter_from_user_mode+0xd6/0x1b0 kernel/entry/common.c:99

 do_syscall_64+0x11/0x50 arch/x86/entry/common.c:41

 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:

CPU: 0 PID: 25131 Comm: syz-executor.3 Not tainted 5.10.0+ #6

Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014

==================================================================

```

修改了描述

原值

<!-- #请根据issue的类型在标题右侧下拉框中选择对应的选项（需求、缺陷或CVE等）-->

<!-- #请根据issue相关的版本在里程碑中选择对应的节点，若是与版本无关，请选择“不关联里程碑”-->

## 问题来源

公司内部对 5.10 的 syzkaller KCSAN 测试。报错信息：

```

==================================================================

BUG: KCSAN: data-race in __seccomp_filter / copy_process

read-write to 0xffff9e20d0a3b308 of 4 bytes by task 25128 on cpu 3:

 copy_process+0x18ce/0x1db0 kernel/fork.c:2320

 kernel_clone+0x155/0x600 kernel/fork.c:2495

 __do_sys_clone kernel/fork.c:2612 [inline]

 __se_sys_clone kernel/fork.c:2596 [inline]

 __x64_sys_clone+0xc8/0xf0 kernel/fork.c:2596

 do_syscall_64+0x37/0x50 arch/x86/entry/common.c:46

 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffff9e20d0a3b308 of 4 bytes by task 25131 on cpu 0:

 get_nr_threads include/linux/sched/signal.h:655 [inline]

 __seccomp_filter+0xc9b/0xdc0 kernel/seccomp.c:1263

 __secure_computing+0x8f/0x140 kernel/seccomp.c:1311

 syscall_trace_enter kernel/entry/common.c:58 [inline]

 __syscall_enter_from_user_work kernel/entry/common.c:81 [inline]

 syscall_enter_from_user_mode+0xd6/0x1b0 kernel/entry/common.c:99

 do_syscall_64+0x11/0x50 arch/x86/entry/common.c:41

 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:

CPU: 0 PID: 25131 Comm: syz-executor.3 Not tainted 5.10.0+ #6

Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014

==================================================================

```

新值

<!-- #请根据issue的类型在标题右侧下拉框中选择对应的选项（需求、缺陷或CVE等）-->

<!-- #请根据issue相关的版本在里程碑中选择对应的节点，若是与版本无关，请选择“不关联里程碑”-->

公司内部对 5.10 的 syzkaller KCSAN 测试。报错信息：

```

==================================================================

BUG: KCSAN: data-race in __seccomp_filter / copy_process

read-write to 0xffff9e20d0a3b308 of 4 bytes by task 25128 on cpu 3:

 copy_process+0x18ce/0x1db0 kernel/fork.c:2320

 kernel_clone+0x155/0x600 kernel/fork.c:2495

 __do_sys_clone kernel/fork.c:2612 [inline]

 __se_sys_clone kernel/fork.c:2596 [inline]

 __x64_sys_clone+0xc8/0xf0 kernel/fork.c:2596

 do_syscall_64+0x37/0x50 arch/x86/entry/common.c:46

 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffff9e20d0a3b308 of 4 bytes by task 25131 on cpu 0:

 get_nr_threads include/linux/sched/signal.h:655 [inline]

 __seccomp_filter+0xc9b/0xdc0 kernel/seccomp.c:1263

 __secure_computing+0x8f/0x140 kernel/seccomp.c:1311

 syscall_trace_enter kernel/entry/common.c:58 [inline]

 __syscall_enter_from_user_work kernel/entry/common.c:81 [inline]

 syscall_enter_from_user_mode+0xd6/0x1b0 kernel/entry/common.c:99

 do_syscall_64+0x11/0x50 arch/x86/entry/common.c:41

 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:

CPU: 0 PID: 25131 Comm: syz-executor.3 Not tainted 5.10.0+ #6

Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014

==================================================================

```

修改了描述

原值

<!-- #请根据issue的类型在标题右侧下拉框中选择对应的选项（需求、缺陷或CVE等）-->

<!-- #请根据issue相关的版本在里程碑中选择对应的节点，若是与版本无关，请选择“不关联里程碑”-->

公司内部对 5.10 的 syzkaller KCSAN 测试。报错信息：

```

==================================================================

BUG: KCSAN: data-race in __seccomp_filter / copy_process

read-write to 0xffff9e20d0a3b308 of 4 bytes by task 25128 on cpu 3:

 copy_process+0x18ce/0x1db0 kernel/fork.c:2320

 kernel_clone+0x155/0x600 kernel/fork.c:2495

 __do_sys_clone kernel/fork.c:2612 [inline]

 __se_sys_clone kernel/fork.c:2596 [inline]

 __x64_sys_clone+0xc8/0xf0 kernel/fork.c:2596

 do_syscall_64+0x37/0x50 arch/x86/entry/common.c:46

 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffff9e20d0a3b308 of 4 bytes by task 25131 on cpu 0:

 get_nr_threads include/linux/sched/signal.h:655 [inline]

 __seccomp_filter+0xc9b/0xdc0 kernel/seccomp.c:1263

 __secure_computing+0x8f/0x140 kernel/seccomp.c:1311

 syscall_trace_enter kernel/entry/common.c:58 [inline]

 __syscall_enter_from_user_work kernel/entry/common.c:81 [inline]

 syscall_enter_from_user_mode+0xd6/0x1b0 kernel/entry/common.c:99

 do_syscall_64+0x11/0x50 arch/x86/entry/common.c:41

 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:

CPU: 0 PID: 25131 Comm: syz-executor.3 Not tainted 5.10.0+ #6

Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014

==================================================================

```

新值

<!-- #请根据issue的类型在标题右侧下拉框中选择对应的选项（需求、缺陷或CVE等）-->

<!-- #请根据issue相关的版本在里程碑中选择对应的节点，若是与版本无关，请选择“不关联里程碑”-->

公司内部对 5.10 的 syzkaller KCSAN 测试发现如下问题：

```

==================================================================

BUG: KCSAN: data-race in __seccomp_filter / copy_process

read-write to 0xffff9e20d0a3b308 of 4 bytes by task 25128 on cpu 3:

 copy_process+0x18ce/0x1db0 kernel/fork.c:2320

 kernel_clone+0x155/0x600 kernel/fork.c:2495

 __do_sys_clone kernel/fork.c:2612 [inline]

 __se_sys_clone kernel/fork.c:2596 [inline]

 __x64_sys_clone+0xc8/0xf0 kernel/fork.c:2596

 do_syscall_64+0x37/0x50 arch/x86/entry/common.c:46

 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffff9e20d0a3b308 of 4 bytes by task 25131 on cpu 0:

 get_nr_threads include/linux/sched/signal.h:655 [inline]

 __seccomp_filter+0xc9b/0xdc0 kernel/seccomp.c:1263

 __secure_computing+0x8f/0x140 kernel/seccomp.c:1311

 syscall_trace_enter kernel/entry/common.c:58 [inline]

 __syscall_enter_from_user_work kernel/entry/common.c:81 [inline]

 syscall_enter_from_user_mode+0xd6/0x1b0 kernel/entry/common.c:99

 do_syscall_64+0x11/0x50 arch/x86/entry/common.c:41

 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:

CPU: 0 PID: 25131 Comm: syz-executor.3 Not tainted 5.10.0+ #6

Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014

==================================================================

```

修改了描述

原值

<!-- #请根据issue的类型在标题右侧下拉框中选择对应的选项（需求、缺陷或CVE等）-->

<!-- #请根据issue相关的版本在里程碑中选择对应的节点，若是与版本无关，请选择“不关联里程碑”-->

公司内部对 5.10 的 syzkaller KCSAN 测试发现如下问题：

```

==================================================================

BUG: KCSAN: data-race in __seccomp_filter / copy_process

read-write to 0xffff9e20d0a3b308 of 4 bytes by task 25128 on cpu 3:

 copy_process+0x18ce/0x1db0 kernel/fork.c:2320

 kernel_clone+0x155/0x600 kernel/fork.c:2495

 __do_sys_clone kernel/fork.c:2612 [inline]

 __se_sys_clone kernel/fork.c:2596 [inline]

 __x64_sys_clone+0xc8/0xf0 kernel/fork.c:2596

 do_syscall_64+0x37/0x50 arch/x86/entry/common.c:46

 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffff9e20d0a3b308 of 4 bytes by task 25131 on cpu 0:

 get_nr_threads include/linux/sched/signal.h:655 [inline]

 __seccomp_filter+0xc9b/0xdc0 kernel/seccomp.c:1263

 __secure_computing+0x8f/0x140 kernel/seccomp.c:1311

 syscall_trace_enter kernel/entry/common.c:58 [inline]

 __syscall_enter_from_user_work kernel/entry/common.c:81 [inline]

 syscall_enter_from_user_mode+0xd6/0x1b0 kernel/entry/common.c:99

 do_syscall_64+0x11/0x50 arch/x86/entry/common.c:41

 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:

CPU: 0 PID: 25131 Comm: syz-executor.3 Not tainted 5.10.0+ #6

Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014

==================================================================

```

新值

<!-- #请根据issue的类型在标题右侧下拉框中选择对应的选项（需求、缺陷或CVE等）-->

<!-- #请根据issue相关的版本在里程碑中选择对应的节点，若是与版本无关，请选择“不关联里程碑”-->

同步自 OLK-5.10，openEuler-22.03-LTS：

#I5LLC6 

问题的描述、分析和处理，请参照上述 issue。

通过src-openeuler/kernel Pull Request !708 将任务状态从 待办的 修改为已完成

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