Greeting,

FYI, we noticed WARNING:at_kernel/printk/printk.c:#console_flush_all due to commit (built with clang-14):

commit: 8fc5f5fc7f52a733fcc8b3939d172b9248e63871 ("printk: introduce console_list_lock")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master

in testcase: boot

on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):


[    0.000000][    T0] ------------[ cut here ]------------
[ 0.000000][ T0] WARNING: CPU: 0 PID: 0 at kernel/printk/printk.c:116 console_flush_all (printk.c:?) 
[    0.000000][    T0] Modules linked in:
[    0.000000][    T0] CPU: 0 PID: 0 Comm: swapper Not tainted 6.1.0-rc1-00023-g8fc5f5fc7f52 #1 43391cb98b87f9b922921f2d6247215ade105013
[ 0.000000][ T0] RIP: 0010:console_flush_all (printk.c:?) 
[    0.000000][    T0] ================================================================================
[    0.000000][    T0] UBSAN: shift-out-of-bounds in arch/x86/include/asm/page.h:76:21
[    0.000000][    T0] shift exponent 64 is too large for 64-bit type 's64' (aka 'long long')
[    0.000000][    T0] CPU: 0 PID: 0 Comm: swapper Not tainted 6.1.0-rc1-00023-g8fc5f5fc7f52 #1 43391cb98b87f9b922921f2d6247215ade105013
[    0.000000][    T0] Call Trace:
[    0.000000][    T0]  <TASK>
[ 0.000000][ T0] ? dump_stack_lvl (??:?) 
[ 0.000000][ T0] ? netdev_notice (??:?) 
[ 0.000000][ T0] ? vprintk_emit (??:?) 
[ 0.000000][ T0] ? __ubsan_handle_shift_out_of_bounds (??:?) 
[ 0.000000][ T0] ? console_flush_all (printk.c:?) 
[ 0.000000][ T0] ? vprintk_emit (??:?) 
[ 0.000000][ T0] ? console_flush_all (printk.c:?) 
[ 0.000000][ T0] ? copy_from_kernel_nofault_allowed (??:?) 
[ 0.000000][ T0] ? console_flush_all (printk.c:?) 
[ 0.000000][ T0] ? copy_from_kernel_nofault (??:?) 
[ 0.000000][ T0] ? console_flush_all (printk.c:?) 
[ 0.000000][ T0] ? console_flush_all (printk.c:?) 
[ 0.000000][ T0] ? show_opcodes (??:?) 
[ 0.000000][ T0] ? show_iret_regs (??:?) 
[ 0.000000][ T0] ? __show_regs (??:?) 
[ 0.000000][ T0] ? dump_stack_print_info (??:?) 
[ 0.000000][ T0] ? console_flush_all (printk.c:?) 
[ 0.000000][ T0] ? show_regs (??:?) 
[ 0.000000][ T0] ? __warn (??:?) 
[ 0.000000][ T0] ? console_flush_all (printk.c:?) 
[ 0.000000][ T0] ? report_bug (??:?) 
[ 0.000000][ T0] ? early_fixup_exception (??:?) 
[ 0.000000][ T0] ? early_idt_handler_common (??:?) 
[ 0.000000][ T0] ? console_flush_all (printk.c:?) 
[ 0.000000][ T0] ? console_unlock (??:?) 
[ 0.000000][ T0] ? vprintk_emit (printk.c:?) 
[ 0.000000][ T0] ? console_trylock_spinning (??:?) 
[ 0.000000][ T0] ? lockdep_init_map_type (??:?) 
[ 0.000000][ T0] ? cgroup_init_subsys (cgroup.c:?) 
[ 0.000000][ T0] ? lockdep_init_map_type (??:?) 
[ 0.000000][ T0] ? vprintk_emit (??:?) 
[ 0.000000][ T0] ? _printk (??:?) 
[ 0.000000][ T0] ? mutex_unlock (mutex.c:?) 
[ 0.000000][ T0] ? panic (??:?) 
[ 0.000000][ T0] ? boot_cpu_init (??:?) 
[ 0.000000][ T0] ? cgroup_init_early (??:?) 
[ 0.000000][ T0] ? start_kernel (??:?) 
[ 0.000000][ T0] ? secondary_startup_64_no_verify (??:?) 
[    0.000000][    T0]  </TASK>
[    0.000000][    T0] ================================================================================
[    0.000000][    T0] UBSAN: shift-out-of-bounds in arch/x86/include/asm/page.h:76:43
[    0.000000][    T0] shift exponent 64 is too large for 64-bit type 's64' (aka 'long long')
[    0.000000][    T0] CPU: 0 PID: 0 Comm: swapper Not tainted 6.1.0-rc1-00023-g8fc5f5fc7f52 #1 43391cb98b87f9b922921f2d6247215ade105013
[    0.000000][    T0] Call Trace:
[    0.000000][    T0]  <TASK>
[ 0.000000][ T0] ? dump_stack_lvl (??:?) 
[ 0.000000][ T0] ? netdev_notice (??:?) 
[ 0.000000][ T0] ? vprintk_emit (??:?) 
[ 0.000000][ T0] ? __ubsan_handle_shift_out_of_bounds (??:?) 
[ 0.000000][ T0] ? console_flush_all (printk.c:?) 
[ 0.000000][ T0] ? copy_from_kernel_nofault_allowed (??:?) 
[ 0.000000][ T0] ? console_flush_all (printk.c:?) 
[ 0.000000][ T0] ? copy_from_kernel_nofault (??:?) 
[ 0.000000][ T0] ? console_flush_all (printk.c:?) 
[ 0.000000][ T0] ? console_flush_all (printk.c:?) 
[ 0.000000][ T0] ? show_opcodes (??:?) 
[ 0.000000][ T0] ? show_iret_regs (??:?) 
[ 0.000000][ T0] ? __show_regs (??:?) 
[ 0.000000][ T0] ? dump_stack_print_info (??:?) 
[ 0.000000][ T0] ? console_flush_all (printk.c:?) 
[ 0.000000][ T0] ? show_regs (??:?) 
[ 0.000000][ T0] ? __warn (??:?) 
[ 0.000000][ T0] ? console_flush_all (printk.c:?) 
[ 0.000000][ T0] ? report_bug (??:?) 
[ 0.000000][ T0] ? early_fixup_exception (??:?) 
[ 0.000000][ T0] ? early_idt_handler_common (??:?) 
[ 0.000000][ T0] ? console_flush_all (printk.c:?) 
[ 0.000000][ T0] ? console_unlock (??:?) 
[ 0.000000][ T0] ? vprintk_emit (printk.c:?) 
[ 0.000000][ T0] ? console_trylock_spinning (??:?) 
[ 0.000000][ T0] ? lockdep_init_map_type (??:?) 
[ 0.000000][ T0] ? cgroup_init_subsys (cgroup.c:?) 
[ 0.000000][ T0] ? lockdep_init_map_type (??:?) 
[ 0.000000][ T0] ? vprintk_emit (??:?) 
[ 0.000000][ T0] ? _printk (??:?) 
[ 0.000000][ T0] ? mutex_unlock (mutex.c:?) 
[ 0.000000][ T0] ? panic (??:?) 
[ 0.000000][ T0] ? boot_cpu_init (??:?) 
[ 0.000000][ T0] ? cgroup_init_early (??:?) 
[ 0.000000][ T0] ? start_kernel (??:?) 
[ 0.000000][ T0] ? secondary_startup_64_no_verify (??:?) 
[    0.000000][    T0]  </TASK>
[    0.000000][    T0] ================================================================================
[ 0.000000][ T0] Code: 0d 2e 86 80 e1 07 80 c1 03 38 c1 0f 8c 9c fe ff ff 48 c7 c7 00 0d 2e 86 e8 8e b4 60 00 e9 8b fe ff ff 48 83 05 71 0e 0d 07 01 <0f> 0b e9 74 fc ff ff 48 c7 c1 94 54 e0 86 80 e1 07 80 c1 03 38 c1
All code
========
   0:	0d 2e 86 80 e1       	or     $0xe180862e,%eax
   5:	07                   	(bad)  
   6:	80 c1 03             	add    $0x3,%cl
   9:	38 c1                	cmp    %al,%cl
   b:	0f 8c 9c fe ff ff    	jl     0xfffffffffffffead
  11:	48 c7 c7 00 0d 2e 86 	mov    $0xffffffff862e0d00,%rdi
  18:	e8 8e b4 60 00       	callq  0x60b4ab
  1d:	e9 8b fe ff ff       	jmpq   0xfffffffffffffead
  22:	48 83 05 71 0e 0d 07 	addq   $0x1,0x70d0e71(%rip)        # 0x70d0e9b
  29:	01 
  2a:*	0f 0b                	ud2    		<-- trapping instruction
  2c:	e9 74 fc ff ff       	jmpq   0xfffffffffffffca5
  31:	48 c7 c1 94 54 e0 86 	mov    $0xffffffff86e05494,%rcx
  38:	80 e1 07             	and    $0x7,%cl
  3b:	80 c1 03             	add    $0x3,%cl
  3e:	38 c1                	cmp    %al,%cl

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2    
   2:	e9 74 fc ff ff       	jmpq   0xfffffffffffffc7b
   7:	48 c7 c1 94 54 e0 86 	mov    $0xffffffff86e05494,%rcx
   e:	80 e1 07             	and    $0x7,%cl
  11:	80 c1 03             	add    $0x3,%cl
  14:	38 c1                	cmp    %al,%cl
[    0.000000][    T0] RSP: 0000:ffffffff86207c90 EFLAGS: 00010002 ORIG_RAX: 0000000000000000
[    0.000000][    T0] RAX: 0000000000000000 RBX: ffffffff86207d40 RCX: 0000000086207d00
[    0.000000][    T0] RDX: ffffffff86207d40 RSI: ffffffff8631a300 RDI: ffffffff86244220
[    0.000000][    T0] RBP: ffffffff86207dd0 R08: dffffc0000000000 R09: 000000000000010a
[    0.000000][    T0] R10: dffff7fff0f5daf6 R11: 205453432030343a R12: 0000000000000000
[    0.000000][    T0] R13: ffffffff86207d50 R14: dffffc0000000000 R15: 1ffffffff0c40fa8
[    0.000000][    T0] FS:  0000000000000000(0000) GS:ffffffff862ab000(0000) knlGS:0000000000000000
[    0.000000][    T0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    0.000000][    T0] CR2: ffff888000015508 CR3: 0000000007679000 CR4: 00000000000000a0
[    0.000000][    T0] Call Trace:
[    0.000000][    T0]  <TASK>
[ 0.000000][ T0] ? console_unlock (??:?) 
[ 0.000000][ T0] ? vprintk_emit (printk.c:?) 
[ 0.000000][ T0] ? console_trylock_spinning (??:?) 
[ 0.000000][ T0] ? lockdep_init_map_type (??:?) 
[ 0.000000][ T0] ? cgroup_init_subsys (cgroup.c:?) 
[ 0.000000][ T0] ? lockdep_init_map_type (??:?) 
[ 0.000000][ T0] ? vprintk_emit (??:?) 
[ 0.000000][ T0] ? _printk (??:?) 
[ 0.000000][ T0] ? mutex_unlock (mutex.c:?) 
[ 0.000000][ T0] ? panic (??:?) 
[ 0.000000][ T0] ? boot_cpu_init (??:?) 
[ 0.000000][ T0] ? cgroup_init_early (??:?) 
[ 0.000000][ T0] ? start_kernel (??:?) 
[ 0.000000][ T0] ? secondary_startup_64_no_verify (??:?) 
[    0.000000][    T0]  </TASK>
[    0.000000][    T0] irq event stamp: 0
[ 0.000000][ T0] hardirqs last enabled at (0): 0x0 
[ 0.000000][ T0] hardirqs last disabled at (0): 0x0 
[ 0.000000][ T0] softirqs last enabled at (0): 0x0 
[ 0.000000][ T0] softirqs last disabled at (0): 0x0 
[    0.000000][    T0] ---[ end trace 0000000000000000 ]---


If you fix the issue, kindly add following tag
| Reported-by: kernel test robot <yujie.liu@intel.com>
| Link: https://lore.kernel.org/oe-lkp/202211302326.2915f85f-yujie.liu@intel.com


To reproduce:

        # build kernel
	cd linux
	cp config-6.1.0-rc1-00023-g8fc5f5fc7f52 .config
	make HOSTCC=clang-14 CC=clang-14 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage modules
	make HOSTCC=clang-14 CC=clang-14 ARCH=x86_64 INSTALL_MOD_PATH=<mod-install-dir> modules_install
	cd <mod-install-dir>
	find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz


        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        bin/lkp qemu -k <bzImage> -m modules.cgz job-script # job-script is attached in this email

        # 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://01.org/lkp