FYI, we noticed the following commit:

commit: 46738b1317e169b281ad74690276916e24d1be6d ("ipv6: sr: add option to control lwtunnel support")
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master

in testcase: boot

on test machine: qemu-system-x86_64 -enable-kvm -cpu host -smp 2 -m 4G

caused below changes:


+--------------------------------------------+------------+------------+
|                                            | 21b23daeba | 46738b1317 |
+--------------------------------------------+------------+------------+
| boot_successes                             | 18         | 15         |
| boot_failures                              | 20         | 23         |
| BUG:unable_to_handle_kernel                | 20         |            |
| Oops                                       | 20         |            |
| RIP:seg6_hmac_init                         | 20         |            |
| calltrace:inet6_init                       | 20         | 23         |
| calltrace:SyS_finit_module                 | 4          | 4          |
| Kernel_panic-not_syncing:Fatal_exception   | 20         |            |
| calltrace:SyS_init_module                  | 16         | 19         |
| BUG:using_smp_processor_id()in_preemptible | 0          | 23         |
+--------------------------------------------+------------+------------+



[   20.408428] Freeing unused kernel memory: 856K (ffff880001b2a000 - ffff880001c00000)
[   20.428980] systemd[1]: RTC configured in localtime, applying delta of 480 minutes to system time.
[   20.437853] NET: Registered protocol family 10
[   20.451460] BUG: using smp_processor_id() in preemptible [00000000] code: systemd/1
[   20.452556] caller is debug_smp_processor_id+0x17/0x19
[   20.453304] CPU: 0 PID: 1 Comm: systemd Not tainted 4.9.0-rc5-00973-g46738b1 #1
[   20.454406]  ffffc9000062fc18 ffffffff813607b2 0000000000000000 ffffffff81a7f782
[   20.455528]  ffffc9000062fc48 ffffffff813778dc 0000000000000000 00000000001dcf98
[   20.456539]  ffffffffa003bd08 ffffffff81af93e0 ffffc9000062fc58 ffffffff81377905
[   20.456539] Call Trace:
[   20.456539]  [<ffffffff813607b2>] dump_stack+0x63/0x7f
[   20.456539]  [<ffffffff813778dc>] check_preemption_disabled+0xd1/0xe3
[   20.456539]  [<ffffffff81377905>] debug_smp_processor_id+0x17/0x19
[   20.460260]  [<ffffffffa0061f3b>] seg6_hmac_init+0xfa/0x192 [ipv6]
[   20.460260]  [<ffffffffa0061ccc>] seg6_init+0x39/0x6f [ipv6]
[   20.460260]  [<ffffffffa006121a>] inet6_init+0x21a/0x321 [ipv6]
[   20.460260]  [<ffffffffa0061000>] ? 0xffffffffa0061000
[   20.460260]  [<ffffffff81000457>] do_one_initcall+0x8b/0x115
[   20.460260]  [<ffffffff811328a3>] do_init_module+0x53/0x1c4
[   20.460260]  [<ffffffff8110650a>] load_module+0x1153/0x14ec
[   20.460260]  [<ffffffff81106a7b>] SYSC_finit_module+0x8c/0xb9
[   20.460260]  [<ffffffff81106a7b>] ? SYSC_finit_module+0x8c/0xb9
[   20.460260]  [<ffffffff81106abc>] SyS_finit_module+0x9/0xb
[   20.460260]  [<ffffffff810014d1>] do_syscall_64+0x62/0x75
[   20.460260]  [<ffffffff816834f0>] entry_SYSCALL64_slow_path+0x25/0x25
[   20.478528] BUG: using smp_processor_id() in preemptible [00000000] code: systemd/1
[   20.480146] caller is debug_smp_processor_id+0x17/0x19
[   20.481247] CPU: 0 PID: 1 Comm: systemd Not tainted 4.9.0-rc5-00973-g46738b1 #1
[   20.482755]  ffffc9000062fc18 ffffffff813607b2 0000000000000000 ffffffff81a7f782
[   20.484131]  ffffc9000062fc48 ffffffff813778dc 0000000000000058 00000000001dcfa0
[   20.484131]  ffffffffa003bd08 ffffffff81af93e0 ffffc9000062fc58 ffffffff81377905
[   20.484131] Call Trace:
[   20.484131]  [<ffffffff813607b2>] dump_stack+0x63/0x7f
[   20.484131]  [<ffffffff813778dc>] check_preemption_disabled+0xd1/0xe3
[   20.484131]  [<ffffffff81377905>] debug_smp_processor_id+0x17/0x19
[   20.484131]  [<ffffffffa0061f3b>] seg6_hmac_init+0xfa/0x192 [ipv6]
[   20.484131]  [<ffffffffa0061ccc>] seg6_init+0x39/0x6f [ipv6]
[   20.484131]  [<ffffffffa006121a>] inet6_init+0x21a/0x321 [ipv6]
[   20.484131]  [<ffffffffa0061000>] ? 0xffffffffa0061000
[   20.484131]  [<ffffffff81000457>] do_one_initcall+0x8b/0x115
[   20.484131]  [<ffffffff811328a3>] do_init_module+0x53/0x1c4
[   20.484131]  [<ffffffff8110650a>] load_module+0x1153/0x14ec
[   20.484131]  [<ffffffff81106a7b>] SYSC_finit_module+0x8c/0xb9
[   20.484131]  [<ffffffff81106a7b>] ? SYSC_finit_module+0x8c/0xb9
[   20.484131]  [<ffffffff81106abc>] SyS_finit_module+0x9/0xb
[   20.484131]  [<ffffffff810014d1>] do_syscall_64+0x62/0x75
[   20.484131]  [<ffffffff816834f0>] entry_SYSCALL64_slow_path+0x25/0x25
[   20.506669] Segment Routing with IPv6
[   20.521279] random: systemd: uninitialized urandom read (16 bytes read)


To reproduce:

        git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
        cd lkp-tests
        bin/lkp qemu -k <bzImage> job-script  # job-script is attached in this email



Thanks,
Xiaolong