Hello,

kernel test robot noticed "UBSAN:array-index-out-of-bounds_in_kernel/pid.c" on:

commit: 2b7e57ee8639d525e91bde056303b9adf9f2e067 ("[PATCH] audit: use pid.is_auditd to make auditd_test_task() faster")
url: https://github.com/intel-lab-lkp/linux/commits/Eiichi-Tsukata/audit-use-pid-is_auditd-to-make-auditd_test_task-faster/20230414-111606
base: https://git.kernel.org/cgit/linux/kernel/git/pcmoore/audit.git next
patch link: https://lore.kernel.org/all/20230414031325.82840-1-eiichi.tsukata@nutanix.com/
patch subject: [PATCH] audit: use pid.is_auditd to make auditd_test_task() faster

in testcase: kernel-selftests
version: kernel-selftests-x86_64-60acb023-1_20230329
with following parameters:

	group: pidfd

test-description: The kernel contains a set of "self tests" under the tools/testing/selftests/ directory. These are intended to be small unit tests to exercise individual code paths in the kernel.
test-url: https://www.kernel.org/doc/Documentation/kselftest.txt


compiler: gcc-11
test machine: 4 threads Intel(R) Xeon(R) CPU E3-1225 v5 @ 3.30GHz (Skylake) with 16G memory

(please refer to attached dmesg/kmsg for entire log/backtrace)


If you fix the issue, kindly add following tag
| Reported-by: kernel test robot <oliver.sang@intel.com>
| Link: https://lore.kernel.org/oe-lkp/202304181552.12aae560-oliver.sang@intel.com


[  137.659628][ T1795] UBSAN: array-index-out-of-bounds in kernel/pid.c:247:15
[  137.668563][ T1795] index 1 is out of range for type 'upid [1]'
[  137.674587][ T1795] CPU: 3 PID: 1795 Comm: pidfd_test Not tainted 6.3.0-rc1-00001-g2b7e57ee8639 #1
[  137.683674][ T1795] Hardware name: HP HP Z238 Microtower Workstation/8183, BIOS N51 Ver. 01.63 10/05/2017
[  137.693314][ T1795] Call Trace:
[  137.696482][ T1795]  <TASK>
[ 137.699308][ T1795] dump_stack_lvl (lib/dump_stack.c:107) 
[ 137.703716][ T1795] __ubsan_handle_out_of_bounds (lib/ubsan.c:218 lib/ubsan.c:348) 
[ 137.709339][ T1795] ? alloc_workqueue (kernel/workqueue.c:4490) 
[ 137.714170][ T1795] ? lock_release (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5691) 
[ 137.718661][ T1795] alloc_pid (kernel/pid.c:247) 
[ 137.722817][ T1795] ? copy_namespaces (arch/x86/include/asm/atomic.h:95 include/linux/atomic/atomic-instrumented.h:191 include/linux/nsproxy.h:112 kernel/nsproxy.c:162) 
[ 137.727661][ T1795] copy_process (kernel/fork.c:2287) 
[ 137.732257][ T1795] ? __cleanup_sighand (kernel/fork.c:2018) 
[ 137.737110][ T1795] kernel_clone (include/linux/random.h:26 kernel/fork.c:2685) 
[ 137.741425][ T1795] ? create_io_thread (kernel/fork.c:2644) 
[ 137.746194][ T1795] __do_sys_clone (kernel/fork.c:2814) 
[ 137.750620][ T1795] ? __do_sys_vfork (kernel/fork.c:2814) 
[ 137.755204][ T1795] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4529) 
[ 137.761714][ T1795] ? syscall_enter_from_user_mode (arch/x86/include/asm/irqflags.h:42 arch/x86/include/asm/irqflags.h:77 kernel/entry/common.c:111) 
[ 137.767516][ T1795] do_syscall_64 (arch/x86/entry/common.c:50 arch/x86/entry/common.c:80) 
[ 137.771843][ T1795] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120) 
[  137.777652][ T1795] RIP: 0033:0x7f5ef131b203
[ 137.781965][ T1795] Code: 00 00 00 00 00 66 90 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	00 66 90             	add    %ah,-0x70(%rsi)
   7:	64 48 8b 04 25 10 00 	mov    %fs:0x10,%rax
   e:	00 00 
  10:	45 31 c0             	xor    %r8d,%r8d
  13:	31 d2                	xor    %edx,%edx
  15:	31 f6                	xor    %esi,%esi
  17:	bf 11 00 20 01       	mov    $0x1200011,%edi
  1c:	4c 8d 90 d0 02 00 00 	lea    0x2d0(%rax),%r10
  23:	b8 38 00 00 00       	mov    $0x38,%eax
  28:	0f 05                	syscall 
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 35                	ja     0x67
  32:	89 c2                	mov    %eax,%edx
  34:	85 c0                	test   %eax,%eax
  36:	75 2c                	jne    0x64
  38:	64                   	fs
  39:	48                   	rex.W
  3a:	8b                   	.byte 0x8b
  3b:	04 25                	add    $0x25,%al
  3d:	10 00                	adc    %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 35                	ja     0x3d
   8:	89 c2                	mov    %eax,%edx
   a:	85 c0                	test   %eax,%eax
   c:	75 2c                	jne    0x3a
   e:	64                   	fs
   f:	48                   	rex.W
  10:	8b                   	.byte 0x8b
  11:	04 25                	add    $0x25,%al
  13:	10 00                	adc    %al,(%rax)
	...
[  137.801576][ T1795] RSP: 002b:00007ffe17f1b248 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
[  137.809918][ T1795] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5ef131b203
[  137.817807][ T1795] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[  137.825701][ T1795] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000073
[  137.833622][ T1795] R10: 00007f5ef1244a10 R11: 0000000000000246 R12: 0000000000000001
[  137.841514][ T1795] R13: 00007ffe17f1b5d8 R14: 0000557f404d4dd8 R15: 00007f5ef1464020
[  137.849424][ T1795]  </TASK>
[  137.852358][ T1795] ================================================================================
[  137.861627][ T1795] ================================================================================
[  137.870883][ T1795] UBSAN: array-index-out-of-bounds in kernel/pid.c:248:15
[  137.879799][ T1795] index 1 is out of range for type 'upid [1]'
[  137.885817][ T1795] CPU: 3 PID: 1795 Comm: pidfd_test Not tainted 6.3.0-rc1-00001-g2b7e57ee8639 #1
[  137.894839][ T1795] Hardware name: HP HP Z238 Microtower Workstation/8183, BIOS N51 Ver. 01.63 10/05/2017
[  137.904480][ T1795] Call Trace:
[  137.907664][ T1795]  <TASK>
[ 137.910489][ T1795] dump_stack_lvl (lib/dump_stack.c:107) 
[ 137.914889][ T1795] __ubsan_handle_out_of_bounds (lib/ubsan.c:218 lib/ubsan.c:348) 
[ 137.920511][ T1795] ? alloc_workqueue (kernel/workqueue.c:4490) 
[ 137.925351][ T1795] ? lock_release (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5691) 
[ 137.929832][ T1795] alloc_pid (kernel/pid.c:248) 
[ 137.933970][ T1795] ? copy_namespaces (arch/x86/include/asm/atomic.h:95 include/linux/atomic/atomic-instrumented.h:191 include/linux/nsproxy.h:112 kernel/nsproxy.c:162) 
[ 137.938806][ T1795] copy_process (kernel/fork.c:2287) 
[ 137.943400][ T1795] ? __cleanup_sighand (kernel/fork.c:2018) 
[ 137.948257][ T1795] kernel_clone (include/linux/random.h:26 kernel/fork.c:2685) 
[ 137.952622][ T1795] ? create_io_thread (kernel/fork.c:2644) 
[ 137.957389][ T1795] __do_sys_clone (kernel/fork.c:2814) 
[ 137.961788][ T1795] ? __do_sys_vfork (kernel/fork.c:2814) 
[ 137.966375][ T1795] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4529) 
[ 137.972865][ T1795] ? syscall_enter_from_user_mode (arch/x86/include/asm/irqflags.h:42 arch/x86/include/asm/irqflags.h:77 kernel/entry/common.c:111) 
[ 137.978667][ T1795] do_syscall_64 (arch/x86/entry/common.c:50 arch/x86/entry/common.c:80) 
[ 137.982993][ T1795] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120) 
[  137.988791][ T1795] RIP: 0033:0x7f5ef131b203
[ 137.993098][ T1795] Code: 00 00 00 00 00 66 90 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	00 66 90             	add    %ah,-0x70(%rsi)
   7:	64 48 8b 04 25 10 00 	mov    %fs:0x10,%rax
   e:	00 00 
  10:	45 31 c0             	xor    %r8d,%r8d
  13:	31 d2                	xor    %edx,%edx
  15:	31 f6                	xor    %esi,%esi
  17:	bf 11 00 20 01       	mov    $0x1200011,%edi
  1c:	4c 8d 90 d0 02 00 00 	lea    0x2d0(%rax),%r10
  23:	b8 38 00 00 00       	mov    $0x38,%eax
  28:	0f 05                	syscall 
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 35                	ja     0x67
  32:	89 c2                	mov    %eax,%edx
  34:	85 c0                	test   %eax,%eax
  36:	75 2c                	jne    0x64
  38:	64                   	fs
  39:	48                   	rex.W
  3a:	8b                   	.byte 0x8b
  3b:	04 25                	add    $0x25,%al
  3d:	10 00                	adc    %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 35                	ja     0x3d
   8:	89 c2                	mov    %eax,%edx
   a:	85 c0                	test   %eax,%eax
   c:	75 2c                	jne    0x3a
   e:	64                   	fs
   f:	48                   	rex.W
  10:	8b                   	.byte 0x8b
  11:	04 25                	add    $0x25,%al
  13:	10 00                	adc    %al,(%rax)
	...
[  138.012706][ T1795] RSP: 002b:00007ffe17f1b248 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
[  138.021030][ T1795] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5ef131b203
[  138.028923][ T1795] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[  138.036817][ T1795] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000073
[  138.044702][ T1795] R10: 00007f5ef1244a10 R11: 0000000000000246 R12: 0000000000000001
[  138.052633][ T1795] R13: 00007ffe17f1b5d8 R14: 0000557f404d4dd8 R15: 00007f5ef1464020
[  138.060571][ T1795]  </TASK>
[  138.063545][ T1795] ================================================================================
[  138.072792][ T1795] ================================================================================
[  138.082064][ T1795] UBSAN: array-index-out-of-bounds in include/linux/pid.h:159:20
[  138.091532][ T1795] index 1 is out of range for type 'upid [1]'
[  138.097526][ T1795] CPU: 3 PID: 1795 Comm: pidfd_test Not tainted 6.3.0-rc1-00001-g2b7e57ee8639 #1
[  138.106572][ T1795] Hardware name: HP HP Z238 Microtower Workstation/8183, BIOS N51 Ver. 01.63 10/05/2017
[  138.116218][ T1795] Call Trace:
[  138.119390][ T1795]  <TASK>
[ 138.122213][ T1795] dump_stack_lvl (lib/dump_stack.c:108) 
[ 138.126620][ T1795] __ubsan_handle_out_of_bounds (lib/ubsan.c:218 lib/ubsan.c:348) 
[ 138.132253][ T1795] copy_process (include/linux/pid.h:159 kernel/fork.c:2430) 
[ 138.136852][ T1795] ? __cleanup_sighand (kernel/fork.c:2018) 
[ 138.141715][ T1795] kernel_clone (include/linux/random.h:26 kernel/fork.c:2685) 
[ 138.146036][ T1795] ? create_io_thread (kernel/fork.c:2644) 
[ 138.150813][ T1795] __do_sys_clone (kernel/fork.c:2814) 
[ 138.155218][ T1795] ? __do_sys_vfork (kernel/fork.c:2814) 
[ 138.159820][ T1795] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4529) 
[ 138.166321][ T1795] ? syscall_enter_from_user_mode (arch/x86/include/asm/irqflags.h:42 arch/x86/include/asm/irqflags.h:77 kernel/entry/common.c:111) 
[ 138.172121][ T1795] do_syscall_64 (arch/x86/entry/common.c:50 arch/x86/entry/common.c:80) 
[ 138.176452][ T1795] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120) 
[  138.182250][ T1795] RIP: 0033:0x7f5ef131b203
[ 138.186598][ T1795] Code: 00 00 00 00 00 66 90 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	00 66 90             	add    %ah,-0x70(%rsi)
   7:	64 48 8b 04 25 10 00 	mov    %fs:0x10,%rax
   e:	00 00 
  10:	45 31 c0             	xor    %r8d,%r8d
  13:	31 d2                	xor    %edx,%edx
  15:	31 f6                	xor    %esi,%esi
  17:	bf 11 00 20 01       	mov    $0x1200011,%edi
  1c:	4c 8d 90 d0 02 00 00 	lea    0x2d0(%rax),%r10
  23:	b8 38 00 00 00       	mov    $0x38,%eax
  28:	0f 05                	syscall 
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 35                	ja     0x67
  32:	89 c2                	mov    %eax,%edx
  34:	85 c0                	test   %eax,%eax
  36:	75 2c                	jne    0x64
  38:	64                   	fs
  39:	48                   	rex.W
  3a:	8b                   	.byte 0x8b
  3b:	04 25                	add    $0x25,%al
  3d:	10 00                	adc    %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 35                	ja     0x3d
   8:	89 c2                	mov    %eax,%edx
   a:	85 c0                	test   %eax,%eax
   c:	75 2c                	jne    0x3a
   e:	64                   	fs
   f:	48                   	rex.W
  10:	8b                   	.byte 0x8b
  11:	04 25                	add    $0x25,%al
  13:	10 00                	adc    %al,(%rax)
	...
[  138.206212][ T1795] RSP: 002b:00007ffe17f1b248 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
[  138.214567][ T1795] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5ef131b203
[  138.222459][ T1795] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[  138.230347][ T1795] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000073
[  138.238238][ T1795] R10: 00007f5ef1244a10 R11: 0000000000000246 R12: 0000000000000001
[  138.246129][ T1795] R13: 00007ffe17f1b5d8 R14: 0000557f404d4dd8 R15: 00007f5ef1464020
[  138.254039][ T1795]  </TASK>
[  138.256954][ T1795] ================================================================================
[  138.266154][ T1795] ================================================================================
[  138.275354][ T1795] UBSAN: array-index-out-of-bounds in include/linux/pid.h:171:21
[  138.284818][ T1795] index 1 is out of range for type 'upid [1]'
[  138.290789][ T1795] CPU: 3 PID: 1795 Comm: pidfd_test Not tainted 6.3.0-rc1-00001-g2b7e57ee8639 #1
[  138.299816][ T1795] Hardware name: HP HP Z238 Microtower Workstation/8183, BIOS N51 Ver. 01.63 10/05/2017
[  138.309456][ T1795] Call Trace:
[  138.312630][ T1795]  <TASK>
[ 138.315459][ T1795] dump_stack_lvl (lib/dump_stack.c:108) 
[ 138.319856][ T1795] __ubsan_handle_out_of_bounds (lib/ubsan.c:218 lib/ubsan.c:348) 
[ 138.325483][ T1795] copy_process (include/linux/pid.h:171 kernel/fork.c:2459) 
[ 138.330080][ T1795] ? __cleanup_sighand (kernel/fork.c:2018) 
[ 138.334937][ T1795] kernel_clone (include/linux/random.h:26 kernel/fork.c:2685) 
[ 138.339255][ T1795] ? create_io_thread (kernel/fork.c:2644) 
[ 138.344034][ T1795] __do_sys_clone (kernel/fork.c:2814) 
[ 138.348439][ T1795] ? __do_sys_vfork (kernel/fork.c:2814) 
[ 138.353039][ T1795] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4529) 
[ 138.359541][ T1795] ? syscall_enter_from_user_mode (arch/x86/include/asm/irqflags.h:42 arch/x86/include/asm/irqflags.h:77 kernel/entry/common.c:111) 
[ 138.365358][ T1795] do_syscall_64 (arch/x86/entry/common.c:50 arch/x86/entry/common.c:80) 
[ 138.369688][ T1795] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120) 
[  138.375481][ T1795] RIP: 0033:0x7f5ef131b203
[ 138.379791][ T1795] Code: 00 00 00 00 00 66 90 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	00 66 90             	add    %ah,-0x70(%rsi)
   7:	64 48 8b 04 25 10 00 	mov    %fs:0x10,%rax
   e:	00 00 
  10:	45 31 c0             	xor    %r8d,%r8d
  13:	31 d2                	xor    %edx,%edx
  15:	31 f6                	xor    %esi,%esi
  17:	bf 11 00 20 01       	mov    $0x1200011,%edi
  1c:	4c 8d 90 d0 02 00 00 	lea    0x2d0(%rax),%r10
  23:	b8 38 00 00 00       	mov    $0x38,%eax
  28:	0f 05                	syscall 
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 35                	ja     0x67
  32:	89 c2                	mov    %eax,%edx
  34:	85 c0                	test   %eax,%eax
  36:	75 2c                	jne    0x64
  38:	64                   	fs
  39:	48                   	rex.W
  3a:	8b                   	.byte 0x8b
  3b:	04 25                	add    $0x25,%al
  3d:	10 00                	adc    %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 35                	ja     0x3d
   8:	89 c2                	mov    %eax,%edx
   a:	85 c0                	test   %eax,%eax
   c:	75 2c                	jne    0x3a
   e:	64                   	fs
   f:	48                   	rex.W
  10:	8b                   	.byte 0x8b
  11:	04 25                	add    $0x25,%al
  13:	10 00                	adc    %al,(%rax)
	...
[  138.399395][ T1795] RSP: 002b:00007ffe17f1b248 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
[  138.407729][ T1795] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5ef131b203
[  138.415646][ T1795] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[  138.423560][ T1795] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000073
[  138.431470][ T1795] R10: 00007f5ef1244a10 R11: 0000000000000246 R12: 0000000000000001
[  138.439357][ T1795] R13: 00007ffe17f1b5d8 R14: 0000557f404d4dd8 R15: 00007f5ef1464020
[  138.447274][ T1795]  </TASK>
[  138.450183][ T1795] ================================================================================
[  138.459384][ T1795] ================================================================================
[  138.468632][ T1795] UBSAN: array-index-out-of-bounds in include/linux/pid.h:159:20
[  138.478102][ T1795] index 1 is out of range for type 'upid [1]'
[  138.484072][ T1795] CPU: 3 PID: 1795 Comm: pidfd_test Not tainted 6.3.0-rc1-00001-g2b7e57ee8639 #1
[  138.493105][ T1795] Hardware name: HP HP Z238 Microtower Workstation/8183, BIOS N51 Ver. 01.63 10/05/2017
[  138.502740][ T1795] Call Trace:
[  138.505920][ T1795]  <TASK>
[ 138.508748][ T1795] dump_stack_lvl (lib/dump_stack.c:108) 
[ 138.513155][ T1795] __ubsan_handle_out_of_bounds (lib/ubsan.c:218 lib/ubsan.c:348) 
[ 138.518787][ T1795] copy_process (include/linux/pid.h:159 kernel/fork.c:2460) 
[ 138.523386][ T1795] ? __cleanup_sighand (kernel/fork.c:2018) 
[ 138.528249][ T1795] kernel_clone (include/linux/random.h:26 kernel/fork.c:2685) 
[ 138.532615][ T1795] ? create_io_thread (kernel/fork.c:2644) 
[ 138.537396][ T1795] __do_sys_clone (kernel/fork.c:2814) 
[ 138.541797][ T1795] ? __do_sys_vfork (kernel/fork.c:2814) 
[ 138.546398][ T1795] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4529) 
[ 138.552907][ T1795] ? syscall_enter_from_user_mode (arch/x86/include/asm/irqflags.h:42 arch/x86/include/asm/irqflags.h:77 kernel/entry/common.c:111) 
[ 138.558708][ T1795] do_syscall_64 (arch/x86/entry/common.c:50 arch/x86/entry/common.c:80) 
[ 138.563039][ T1795] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120) 
[  138.568841][ T1795] RIP: 0033:0x7f5ef131b203
[ 138.573153][ T1795] Code: 00 00 00 00 00 66 90 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	00 66 90             	add    %ah,-0x70(%rsi)
   7:	64 48 8b 04 25 10 00 	mov    %fs:0x10,%rax
   e:	00 00 
  10:	45 31 c0             	xor    %r8d,%r8d
  13:	31 d2                	xor    %edx,%edx
  15:	31 f6                	xor    %esi,%esi
  17:	bf 11 00 20 01       	mov    $0x1200011,%edi
  1c:	4c 8d 90 d0 02 00 00 	lea    0x2d0(%rax),%r10
  23:	b8 38 00 00 00       	mov    $0x38,%eax
  28:	0f 05                	syscall 
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 35                	ja     0x67
  32:	89 c2                	mov    %eax,%edx
  34:	85 c0                	test   %eax,%eax
  36:	75 2c                	jne    0x64
  38:	64                   	fs
  39:	48                   	rex.W
  3a:	8b                   	.byte 0x8b
  3b:	04 25                	add    $0x25,%al
  3d:	10 00                	adc    %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 35                	ja     0x3d
   8:	89 c2                	mov    %eax,%edx
   a:	85 c0                	test   %eax,%eax
   c:	75 2c                	jne    0x3a
   e:	64                   	fs
   f:	48                   	rex.W
  10:	8b                   	.byte 0x8b
  11:	04 25                	add    $0x25,%al
  13:	10 00                	adc    %al,(%rax)
	...
[  138.592766][ T1795] RSP: 002b:00007ffe17f1b248 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
[  138.601104][ T1795] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5ef131b203
[  138.609006][ T1795] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[  138.616897][ T1795] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000073
[  138.624799][ T1795] R10: 00007f5ef1244a10 R11: 0000000000000246 R12: 0000000000000001
[  138.632696][ T1795] R13: 00007ffe17f1b5d8 R14: 0000557f404d4dd8 R15: 00007f5ef1464020
[  138.640652][ T1795]  </TASK>
[  138.643595][ T1795] ================================================================================
[  138.652865][ T1795] ================================================================================
[  138.652904][ T1846] ================================================================================
[  138.662138][ T1795] UBSAN: array-index-out-of-bounds in kernel/pid.c:112:19
[  138.671282][ T1846] UBSAN: array-index-out-of-bounds in include/linux/pid.h:159:20
[  138.671287][ T1846] index 1 is out of range for type 'upid [1]'
[  138.680120][ T1795] index 1 is out of range for type 'upid [1]'
[  138.680123][ T1795] CPU: 3 PID: 1795 Comm: pidfd_test Not tainted 6.3.0-rc1-00001-g2b7e57ee8639 #1
[  138.680126][ T1795] Hardware name: HP HP Z238 Microtower Workstation/8183, BIOS N51 Ver. 01.63 10/05/2017
[  138.720369][ T1795] Call Trace:
[  138.723537][ T1795]  <TASK>
[ 138.726375][ T1795] dump_stack_lvl (lib/dump_stack.c:107) 
[ 138.730773][ T1795] __ubsan_handle_out_of_bounds (lib/ubsan.c:218 lib/ubsan.c:348) 
[ 138.736393][ T1795] ? alloc_workqueue (kernel/workqueue.c:4490) 
[ 138.741233][ T1795] ? lock_release (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5691) 
[ 138.745718][ T1795] put_pid (include/linux/rcupdate.h:332 include/linux/rcupdate.h:806 kernel/pid.c:446) 
[ 138.750291][ T1795] kernel_clone (kernel/fork.c:2644) 
[ 138.754693][ T1795] ? create_io_thread (kernel/fork.c:2644) 
[ 138.759469][ T1795] __do_sys_clone (kernel/fork.c:2814) 
[ 138.763866][ T1795] ? __do_sys_vfork (kernel/fork.c:2814) 
[ 138.768453][ T1795] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4529) 
[ 138.774949][ T1795] ? syscall_enter_from_user_mode (arch/x86/include/asm/irqflags.h:42 arch/x86/include/asm/irqflags.h:77 kernel/entry/common.c:111) 
[ 138.780743][ T1795] do_syscall_64 (arch/x86/entry/common.c:50 arch/x86/entry/common.c:80) 
[ 138.785069][ T1795] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120) 
[  138.790868][ T1795] RIP: 0033:0x7f5ef131b203
[ 138.795179][ T1795] Code: 00 00 00 00 00 66 90 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	00 66 90             	add    %ah,-0x70(%rsi)
   7:	64 48 8b 04 25 10 00 	mov    %fs:0x10,%rax
   e:	00 00 
  10:	45 31 c0             	xor    %r8d,%r8d
  13:	31 d2                	xor    %edx,%edx
  15:	31 f6                	xor    %esi,%esi
  17:	bf 11 00 20 01       	mov    $0x1200011,%edi
  1c:	4c 8d 90 d0 02 00 00 	lea    0x2d0(%rax),%r10
  23:	b8 38 00 00 00       	mov    $0x38,%eax
  28:	0f 05                	syscall 
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 35                	ja     0x67
  32:	89 c2                	mov    %eax,%edx
  34:	85 c0                	test   %eax,%eax
  36:	75 2c                	jne    0x64
  38:	64                   	fs
  39:	48                   	rex.W
  3a:	8b                   	.byte 0x8b
  3b:	04 25                	add    $0x25,%al
  3d:	10 00                	adc    %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 35                	ja     0x3d
   8:	89 c2                	mov    %eax,%edx
   a:	85 c0                	test   %eax,%eax
   c:	75 2c                	jne    0x3a
   e:	64                   	fs
   f:	48                   	rex.W
  10:	8b                   	.byte 0x8b
  11:	04 25                	add    $0x25,%al
  13:	10 00                	adc    %al,(%rax)
	...
[  138.814778][ T1795] RSP: 002b:00007ffe17f1b248 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
[  138.823112][ T1795] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5ef131b203
[  138.830999][ T1795] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[  138.838889][ T1795] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000073
[  138.846783][ T1795] R10: 00007f5ef1244a10 R11: 0000000000000246 R12: 0000000000000001
[  138.854673][ T1795] R13: 00007ffe17f1b5d8 R14: 0000557f404d4dd8 R15: 00007f5ef1464020
[  138.862634][ T1795]  </TASK>
[  138.865561][ T1846] CPU: 1 PID: 1846 Comm: pidfd_test Not tainted 6.3.0-rc1-00001-g2b7e57ee8639 #1
[  138.865587][ T1795] ================================================================================
[  138.874538][ T1846] Hardware name: HP HP Z238 Microtower Workstation/8183, BIOS N51 Ver. 01.63 10/05/2017
[  138.874557][ T1846] Call Trace:
[  138.874560][ T1846]  <TASK>
[ 138.874563][ T1846] dump_stack_lvl (lib/dump_stack.c:107) 
[ 138.903834][ T1846] __ubsan_handle_out_of_bounds (lib/ubsan.c:218 lib/ubsan.c:348) 
[ 138.909459][ T1846] __task_pid_nr_ns (include/linux/pid.h:159 kernel/pid.c:512 kernel/pid.c:502) 
[ 138.914215][ T1846] schedule_tail (kernel/sched/core.c:5243) 
[ 138.918529][ T1846] ret_from_fork (arch/x86/entry/entry_64.S:295) 
[  138.922794][ T1846]  </TASK>
[  138.925863][ T1846] ================================================================================
[  138.935843][ T1846] ================================================================================
[  138.945156][ T1846] UBSAN: array-index-out-of-bounds in include/linux/pid.h:159:20
[  138.954728][ T1846] index 1 is out of range for type 'upid [1]'
[  138.960755][ T1846] CPU: 2 PID: 1846 Comm: pidfd_test Not tainted 6.3.0-rc1-00001-g2b7e57ee8639 #1
[  138.969791][ T1846] Hardware name: HP HP Z238 Microtower Workstation/8183, BIOS N51 Ver. 01.63 10/05/2017
[  138.979424][ T1846] Call Trace:
[  138.982611][ T1846]  <TASK>
[ 138.985440][ T1846] dump_stack_lvl (lib/dump_stack.c:107) 
[ 138.989831][ T1846] __ubsan_handle_out_of_bounds (lib/ubsan.c:218 lib/ubsan.c:348) 
[ 138.995452][ T1846] ? kasan_set_track (mm/kasan/common.c:52) 
[ 139.000112][ T1846] task_active_pid_ns (include/linux/pid.h:159 kernel/pid.c:512) 
[ 139.004857][ T1846] proc_init_fs_context (fs/proc/root.c:252) 
[ 139.009868][ T1846] alloc_fs_context (fs/fs_context.c:291) 
[ 139.014626][ T1846] do_new_mount (fs/namespace.c:3028) 
[ 139.019026][ T1846] ? do_add_mount (fs/namespace.c:3003) 
[ 139.023612][ T1846] ? security_capable (security/security.c:837 (discriminator 13)) 
[ 139.028368][ T1846] path_mount (fs/namespace.c:3372) 
[ 139.032681][ T1846] ? finish_automount (fs/namespace.c:3299) 
[ 139.037624][ T1846] __x64_sys_mount (fs/namespace.c:3386 fs/namespace.c:3594 fs/namespace.c:3571 fs/namespace.c:3571) 
[ 139.042285][ T1846] ? path_mount (fs/namespace.c:3571) 
[ 139.046871][ T1846] do_syscall_64 (arch/x86/entry/common.c:50 arch/x86/entry/common.c:80) 
[ 139.051186][ T1846] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120) 
[  139.056977][ T1846] RIP: 0033:0x7f5ef1350bca
[ 139.061281][ T1846] Code: 48 8b 0d 39 82 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 06 82 0c 00 f7 d8 64 89 01 48
All code
========
   0:	48 8b 0d 39 82 0c 00 	mov    0xc8239(%rip),%rcx        # 0xc8240
   7:	f7 d8                	neg    %eax
   9:	64 89 01             	mov    %eax,%fs:(%rcx)
   c:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  10:	c3                   	retq   
  11:	66 2e 0f 1f 84 00 00 	nopw   %cs:0x0(%rax,%rax,1)
  18:	00 00 00 
  1b:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  20:	49 89 ca             	mov    %rcx,%r10
  23:	b8 a5 00 00 00       	mov    $0xa5,%eax
  28:	0f 05                	syscall 
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	retq   
  33:	48 8b 0d 06 82 0c 00 	mov    0xc8206(%rip),%rcx        # 0xc8240
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	retq   
   9:	48 8b 0d 06 82 0c 00 	mov    0xc8206(%rip),%rcx        # 0xc8216
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  139.080873][ T1846] RSP: 002b:00007ffe17f1b348 EFLAGS: 00000207 ORIG_RAX: 00000000000000a5
[  139.089197][ T1846] RAX: ffffffffffffffda RBX: 00007ffe17f1b5c8 RCX: 00007f5ef1350bca
[  139.097088][ T1846] RDX: 0000557f404d3474 RSI: 0000557f404d346e RDI: 0000557f404d3474
[  139.104981][ T1846] RBP: 00007ffe17f1b490 R08: 0000000000000000 R09: 00007f5ef1244740
[  139.112870][ T1846] R10: 0000000000000000 R11: 0000000000000207 R12: 0000000000000000
[  139.120756][ T1846] R13: 00007ffe17f1b5d8 R14: 0000557f404d4dd8 R15: 00007f5ef1464020
[  139.128675][ T1846]  </TASK>
[  139.131614][ T1846] ================================================================================
[  139.142885][ T1846] ================================================================================
[  139.152124][ T1846] UBSAN: array-index-out-of-bounds in include/linux/pid.h:159:20
[  139.161641][ T1846] index 1 is out of range for type 'upid [1]'
[  139.167688][ T1846] CPU: 2 PID: 1846 Comm: pidfd_test Not tainted 6.3.0-rc1-00001-g2b7e57ee8639 #1
[  139.176727][ T1846] Hardware name: HP HP Z238 Microtower Workstation/8183, BIOS N51 Ver. 01.63 10/05/2017
[  139.186357][ T1846] Call Trace:
[  139.189524][ T1846]  <TASK>
[ 139.192348][ T1846] dump_stack_lvl (lib/dump_stack.c:107) 
[ 139.196745][ T1846] __ubsan_handle_out_of_bounds (lib/ubsan.c:218 lib/ubsan.c:348) 
[ 139.202368][ T1846] ? get_task_pid (include/linux/rcupdate.h:332 include/linux/rcupdate.h:806 kernel/pid.c:446) 
[ 139.206848][ T1846] pid_vnr (include/linux/pid.h:159 kernel/pid.c:512 kernel/pid.c:491) 
[ 139.210807][ T1846] kernel_clone (kernel/fork.c:2697) 
[ 139.215207][ T1846] ? create_io_thread (kernel/fork.c:2644) 
[ 139.219973][ T1846] __do_sys_clone (kernel/fork.c:2814) 
[ 139.224373][ T1846] ? __do_sys_vfork (kernel/fork.c:2814) 
[ 139.228960][ T1846] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4529) 
[ 139.235455][ T1846] ? syscall_enter_from_user_mode (arch/x86/include/asm/irqflags.h:42 arch/x86/include/asm/irqflags.h:77 kernel/entry/common.c:111) 
[ 139.241245][ T1846] do_syscall_64 (arch/x86/entry/common.c:50 arch/x86/entry/common.c:80) 
[ 139.245623][ T1846] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120) 
[  139.251427][ T1846] RIP: 0033:0x7f5ef131b203
[ 139.255733][ T1846] Code: 00 00 00 00 00 66 90 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	00 66 90             	add    %ah,-0x70(%rsi)
   7:	64 48 8b 04 25 10 00 	mov    %fs:0x10,%rax
   e:	00 00 
  10:	45 31 c0             	xor    %r8d,%r8d
  13:	31 d2                	xor    %edx,%edx
  15:	31 f6                	xor    %esi,%esi
  17:	bf 11 00 20 01       	mov    $0x1200011,%edi
  1c:	4c 8d 90 d0 02 00 00 	lea    0x2d0(%rax),%r10
  23:	b8 38 00 00 00       	mov    $0x38,%eax
  28:	0f 05                	syscall 
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 35                	ja     0x67
  32:	89 c2                	mov    %eax,%edx
  34:	85 c0                	test   %eax,%eax
  36:	75 2c                	jne    0x64
  38:	64                   	fs
  39:	48                   	rex.W
  3a:	8b                   	.byte 0x8b
  3b:	04 25                	add    $0x25,%al
  3d:	10 00                	adc    %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 35                	ja     0x3d
   8:	89 c2                	mov    %eax,%edx
   a:	85 c0                	test   %eax,%eax
   c:	75 2c                	jne    0x3a
   e:	64                   	fs
   f:	48                   	rex.W
  10:	8b                   	.byte 0x8b
  11:	04 25                	add    $0x25,%al
  13:	10 00                	adc    %al,(%rax)
	...
[  139.275314][ T1846] RSP: 002b:00007ffe17f1b248 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
[  139.283653][ T1846] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5ef131b203
[  139.291558][ T1846] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[  139.299448][ T1846] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007f5ef1244740
[  139.307335][ T1846] R10: 00007f5ef1244a10 R11: 0000000000000246 R12: 0000000000000001
[  139.315224][ T1846] R13: 00007ffe17f1b5d8 R14: 0000557f404d4dd8 R15: 00007f5ef1464020
[  139.323135][ T1846]  </TASK>
[  139.326087][ T1846] ================================================================================
[  139.335382][ T1846] ================================================================================
[  139.344662][ T1846] UBSAN: array-index-out-of-bounds in include/linux/pid.h:159:20
[  139.354318][ T1846] index 1 is out of range for type 'upid [1]'
[  139.360350][ T1846] CPU: 2 PID: 1846 Comm: pidfd_test Not tainted 6.3.0-rc1-00001-g2b7e57ee8639 #1
[  139.369388][ T1846] Hardware name: HP HP Z238 Microtower Workstation/8183, BIOS N51 Ver. 01.63 10/05/2017
[  139.379013][ T1846] Call Trace:
[  139.382191][ T1846]  <TASK>
[ 139.385014][ T1846] dump_stack_lvl (lib/dump_stack.c:107) 
[ 139.389411][ T1846] __ubsan_handle_out_of_bounds (lib/ubsan.c:218 lib/ubsan.c:348) 
[ 139.395033][ T1846] find_get_pid (include/linux/pid.h:159 kernel/pid.c:512 kernel/pid.c:320 kernel/pid.c:468) 
[ 139.399430][ T1846] kernel_wait4 (kernel/exit.c:1766) 
[ 139.403828][ T1846] ? __wake_up_parent (kernel/exit.c:1742) 
[ 139.408627][ T1846] __do_sys_wait4 (kernel/exit.c:1803) 
[ 139.413109][ T1846] ? kernel_wait4 (kernel/exit.c:1801) 
[ 139.417725][ T1846] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4529) 
[ 139.424220][ T1846] do_syscall_64 (arch/x86/entry/common.c:50 arch/x86/entry/common.c:80) 
[ 139.428608][ T1846] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120) 
[  139.434418][ T1846] RIP: 0033:0x7f5ef131aa83
[ 139.438727][ T1846] Code: ff ff ff ff e9 0e 00 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 80 3d 61 6b 10 00 00 49 89 ca 74 14 b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 5d c3 0f 1f 40 00 48 83 ec 28 89 54 24 14 48
All code
========
   0:	ff                   	(bad)  
   1:	ff                   	(bad)  
   2:	ff                   	(bad)  
   3:	ff                   	(bad)  
   4:	e9 0e 00 00 00       	jmpq   0x17
   9:	66 2e 0f 1f 84 00 00 	nopw   %cs:0x0(%rax,%rax,1)
  10:	00 00 00 
  13:	0f 1f 40 00          	nopl   0x0(%rax)
  17:	80 3d 61 6b 10 00 00 	cmpb   $0x0,0x106b61(%rip)        # 0x106b7f
  1e:	49 89 ca             	mov    %rcx,%r10
  21:	74 14                	je     0x37
  23:	b8 3d 00 00 00       	mov    $0x3d,%eax
  28:	0f 05                	syscall 
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 5d                	ja     0x8f
  32:	c3                   	retq   
  33:	0f 1f 40 00          	nopl   0x0(%rax)
  37:	48 83 ec 28          	sub    $0x28,%rsp
  3b:	89 54 24 14          	mov    %edx,0x14(%rsp)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 5d                	ja     0x65
   8:	c3                   	retq   
   9:	0f 1f 40 00          	nopl   0x0(%rax)
   d:	48 83 ec 28          	sub    $0x28,%rsp
  11:	89 54 24 14          	mov    %edx,0x14(%rsp)
  15:	48                   	rex.W
[  139.458318][ T1846] RSP: 002b:00007ffe17f1b318 EFLAGS: 00000202 ORIG_RAX: 000000000000003d
[  139.466659][ T1846] RAX: ffffffffffffffda RBX: 00007ffe17f1b5c8 RCX: 00007f5ef131aa83
[  139.474569][ T1846] RDX: 0000000000000000 RSI: 00007ffe17f1b338 RDI: 0000000000000002
[  139.482458][ T1846] RBP: 00007ffe17f1b340 R08: 0000000000000000 R09: 00007f5ef1244740
[  139.490352][ T1846] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
[  139.498244][ T1846] R13: 00007ffe17f1b5d8 R14: 0000557f404d4dd8 R15: 00007f5ef1464020
[  139.506155][ T1846]  </TASK>
[  139.509131][ T1846] ================================================================================
[  139.884334][  T291] # TAP version 13
[  139.884357][  T291]
[  139.890614][  T291] # 1..8
[  139.890632][  T291]
[  139.896187][  T291] # # Parent: pid: 1795
[  139.896205][  T291]
[  139.903747][  T291] # # Parent: Waiting for Child (1796) to complete.
[  139.903766][  T291]
[  139.913180][  T291] # # Time waited for child: 3
[  139.913197][  T291]
[  139.922068][  T291] # ok 1 pidfd_poll check for premature notification on child thread exec test: Passed
[  139.922085][  T291]
[  139.934390][  T291] # # Parent: pid: 1795
[  139.934406][  T291]
[  139.941907][  T291] # # Parent: Waiting for Child (1807) to complete.
[  139.941924][  T291]
[  139.951508][  T291] # # Parent: Child process waited for.
[  139.951572][  T291]
[  139.959959][  T291] # # Time waited for child: 3
[  139.959976][  T291]
[  139.968849][  T291] # ok 2 pidfd_poll check for premature notification on child thread exec test: Passed
[  139.968866][  T291]
[  139.981153][  T291] # # Parent: pid: 1795
[  139.981169][  T291]
[  139.988656][  T291] # # Parent: Waiting for Child (1821) to complete.
[  139.988673][  T291]
[  139.998085][  T291] # # Time since child exit: 3
[  139.998101][  T291]
[  140.007120][  T291] # ok 3 pidfd_poll check for premature notification on non-emptygroup leader exit test: Passed
[  140.007138][  T291]
[  140.020226][  T291] # # Parent: pid: 1795
[  140.020243][  T291]
[  140.027673][  T291] # # Parent: Waiting for Child (1833) to complete.
[  140.027704][  T291]
[  140.037347][  T291] # # Parent: Child process waited for.
[  140.037363][  T291]
[  140.045731][  T291] # # Time since child exit: 3
[  140.045748][  T291]
[  140.054800][  T291] # ok 4 pidfd_poll check for premature notification on non-emptygroup leader exit test: Passed
[  140.054818][  T291]
[  140.070044][  T291] # ok 5 pidfd_send_signal check for support test: pidfd_send_signal() syscall is supported. Tests can be executed
[  140.070061][  T291]
[  140.085654][  T291] # ok 6 pidfd_send_signal send SIGUSR1 test: Sent signal
[  140.085673][  T291]
[  140.095623][  T291] # # waitpid WEXITSTATUS=0
[  140.095640][  T291]
[  140.104242][  T291] # ok 7 pidfd_send_signal signal exited process test: Failed to send signal as expected
[  140.104259][  T291]
[  140.116908][  T291] # # waitpid WEXITSTATUS=0
[  140.116925][  T291]
[  140.124132][  T291] # # waitpid WEXITSTATUS=0
[  140.124148][  T291]
[  140.131332][  T291] # # waitpid WEXITSTATUS=0
[  140.131348][  T291]
[  140.138567][  T291] # # waitpid WEXITSTATUS=0
[  140.138584][  T291]
[  140.145863][  T291] # # waitpid WEXITSTATUS=0
[  140.145880][  T291]
[  140.153115][  T291] # # waitpid WEXITSTATUS=0
[  140.153131][  T291]
[  140.160338][  T291] # # waitpid WEXITSTATUS=0
[  140.160354][  T291]
[  140.167622][  T291] # # waitpid WEXITSTATUS=0
[  140.167640][  T291]
[  140.174903][  T291] # # waitpid WEXITSTATUS=0
[  140.174920][  T291]
[  140.182129][  T291] # # waitpid WEXITSTATUS=0
[  140.182145][  T291]
[  140.189318][  T291] # # waitpid WEXITSTATUS=0
[  140.189335][  T291]
[  140.196532][  T291] # # waitpid WEXITSTATUS=0
[  140.196566][  T291]
[  140.203843][  T291] # # waitpid WEXITSTATUS=0
[  140.203860][  T291]
[  140.211111][  T291] # # waitpid WEXITSTATUS=0
[  140.211127][  T291]
[  140.218301][  T291] # # waitpid WEXITSTATUS=0
[  140.218317][  T291]
[  140.225571][  T291] # # waitpid WEXITSTATUS=0
[  140.225588][  T291]
[  140.232871][  T291] # # waitpid WEXITSTATUS=0
[  140.232888][  T291]
[  140.240123][  T291] # # waitpid WEXITSTATUS=0
[  140.240139][  T291]
[  140.247331][  T291] # # waitpid WEXITSTATUS=0
[  140.247347][  T291]
[  140.254619][  T291] # # waitpid WEXITSTATUS=0
[  140.254636][  T291]
[  140.261901][  T291] # # waitpid WEXITSTATUS=0
[  140.261917][  T291]
[  140.269145][  T291] # # waitpid WEXITSTATUS=0
[  140.269162][  T291]
[  140.276343][  T291] # # waitpid WEXITSTATUS=0


To reproduce:

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        sudo bin/lkp install job.yaml           # job file is attached in this email
        bin/lkp split-job --compatible job.yaml # generate the yaml file for lkp run
        sudo bin/lkp run generated-yaml-file

        # if come across any failure that blocks the test,
        # please remove ~/.lkp and /lkp dir to run from a clean state.



-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests