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Message-ID: <202212251742.82e3d9cb-oliver.sang@intel.com>
Date:   Sun, 25 Dec 2022 17:59:48 +0800
From:   kernel test robot <oliver.sang@...el.com>
To:     Thomas Gleixner <tglx@...utronix.de>
CC:     <oe-lkp@...ts.linux.dev>, <lkp@...el.com>,
        Peter Zijlstra <peterz@...radead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [linus:master] [x86/calldepth]  f5c1bb2afe:
 BUG:unable_to_handle_page_fault_for_address


Greeting,

FYI, we noticed BUG:unable_to_handle_page_fault_for_address due to commit (built with gcc-11):

commit: f5c1bb2afe93396d41c5cbdcb909b08a75b8dde4 ("x86/calldepth: Add ret/call counting for debug")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

[test failed on linux-next/master e45fb347b630ee76482fe938ba76cf8eab811290]

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):


+---------------------------------------------+------------+------------+
|                                             | bbaceb189a | f5c1bb2afe |
+---------------------------------------------+------------+------------+
| boot_successes                              | 18         | 0          |
| boot_failures                               | 0          | 18         |
| BUG:unable_to_handle_page_fault_for_address | 0          | 18         |
| Oops:#[##]                                  | 0          | 18         |
| RIP:__switch_to_asm                         | 0          | 18         |
| Kernel_panic-not_syncing:Fatal_exception    | 0          | 18         |
+---------------------------------------------+------------+------------+


If you fix the issue, kindly add following tag
| Reported-by: kernel test robot <oliver.sang@...el.com>
| Link: https://lore.kernel.org/oe-lkp/202212251742.82e3d9cb-oliver.sang@intel.com


[    0.550171][    T0] BUG: unable to handle page fault for address: ffffffff06531208
[    0.551211][    T0] #PF: supervisor write access in kernel mode
[    0.551990][    T0] #PF: error_code(0x0002) - not-present page
[    0.552740][    T0] PGD 3228067 P4D 3228067 PUD 0
[    0.553361][    T0] Oops: 0002 [#1]
[    0.553809][    T0] CPU: 0 PID: 0 Comm: swapper Tainted: G                T  6.1.0-rc1-00051-gf5c1bb2afe93 #1 589e92d2cdaf7cef9f58e91ccf48515357fc867a
[ 0.555479][ T0] RIP: 0010:__switch_to_asm (arch/x86/entry/entry_64.S:265) 
[ 0.556144][ T0] Code: c7 c4 10 00 00 00 e8 01 00 00 00 cc e8 01 00 00 00 cc 48 83 c4 10 49 ff cc 75 eb 0f ae e8 48 c7 04 25 10 4e ed 83 ff ff ff ff <65> 48 ff 04 25 08 72 2a 83 41 5f 41 5e 41 5d 41 5c 5b 5d e9 45 ad
All code
========
   0:	c7 c4 10 00 00 00    	mov    $0x10,%esp
   6:	e8 01 00 00 00       	callq  0xc
   b:	cc                   	int3   
   c:	e8 01 00 00 00       	callq  0x12
  11:	cc                   	int3   
  12:	48 83 c4 10          	add    $0x10,%rsp
  16:	49 ff cc             	dec    %r12
  19:	75 eb                	jne    0x6
  1b:	0f ae e8             	lfence 
  1e:	48 c7 04 25 10 4e ed 	movq   $0xffffffffffffffff,0xffffffff83ed4e10
  25:	83 ff ff ff ff 
  2a:*	65 48 ff 04 25 08 72 	incq   %gs:0xffffffff832a7208		<-- trapping instruction
  31:	2a 83 
  33:	41 5f                	pop    %r15
  35:	41 5e                	pop    %r14
  37:	41 5d                	pop    %r13
  39:	41 5c                	pop    %r12
  3b:	5b                   	pop    %rbx
  3c:	5d                   	pop    %rbp
  3d:	e9                   	.byte 0xe9
  3e:	45 ad                	rex.RB lods %ds:(%rsi),%eax

Code starting with the faulting instruction
===========================================
   0:	65 48 ff 04 25 08 72 	incq   %gs:0xffffffff832a7208
   7:	2a 83 
   9:	41 5f                	pop    %r15
   b:	41 5e                	pop    %r14
   d:	41 5d                	pop    %r13
   f:	41 5c                	pop    %r12
  11:	5b                   	pop    %rbx
  12:	5d                   	pop    %rbp
  13:	e9                   	.byte 0xe9
  14:	45 ad                	rex.RB lods %ds:(%rsi),%eax
[    0.556467][    T0] RSP: 0000:ffff888100277f20 EFLAGS: 00010046
[    0.556467][    T0] RAX: 0000000000000000 RBX: ffffffff83231a00 RCX: 0000000000000000
[    0.556467][    T0] RDX: 0000000000000000 RSI: ffff888100270000 RDI: ffffffff83231500
[    0.556467][    T0] RBP: ffffffff83203e88 R08: 0000000000000000 R09: 0000000000000000
[    0.556467][    T0] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[    0.556467][    T0] R13: ffff888100270000 R14: 0000000000000000 R15: 0000000000000000
[    0.556467][    T0] FS:  0000000000000000(0000) GS:ffffffff8328a000(0000) knlGS:0000000000000000
[    0.556467][    T0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    0.556467][    T0] CR2: ffffffff06531208 CR3: 0000000003227000 CR4: 00000000000406b0
[    0.556467][    T0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    0.556467][    T0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    0.556467][    T0] Call Trace:
[    0.556467][    T0] Modules linked in:
[    0.556467][    T0] CR2: ffffffff06531208
[    0.556467][    T0] ---[ end trace 0000000000000000 ]---
[ 0.556467][ T0] RIP: 0010:__switch_to_asm (arch/x86/entry/entry_64.S:265) 
[ 0.556467][ T0] Code: c7 c4 10 00 00 00 e8 01 00 00 00 cc e8 01 00 00 00 cc 48 83 c4 10 49 ff cc 75 eb 0f ae e8 48 c7 04 25 10 4e ed 83 ff ff ff ff <65> 48 ff 04 25 08 72 2a 83 41 5f 41 5e 41 5d 41 5c 5b 5d e9 45 ad
All code
========
   0:	c7 c4 10 00 00 00    	mov    $0x10,%esp
   6:	e8 01 00 00 00       	callq  0xc
   b:	cc                   	int3   
   c:	e8 01 00 00 00       	callq  0x12
  11:	cc                   	int3   
  12:	48 83 c4 10          	add    $0x10,%rsp
  16:	49 ff cc             	dec    %r12
  19:	75 eb                	jne    0x6
  1b:	0f ae e8             	lfence 
  1e:	48 c7 04 25 10 4e ed 	movq   $0xffffffffffffffff,0xffffffff83ed4e10
  25:	83 ff ff ff ff 
  2a:*	65 48 ff 04 25 08 72 	incq   %gs:0xffffffff832a7208		<-- trapping instruction
  31:	2a 83 
  33:	41 5f                	pop    %r15
  35:	41 5e                	pop    %r14
  37:	41 5d                	pop    %r13
  39:	41 5c                	pop    %r12
  3b:	5b                   	pop    %rbx
  3c:	5d                   	pop    %rbp
  3d:	e9                   	.byte 0xe9
  3e:	45 ad                	rex.RB lods %ds:(%rsi),%eax

Code starting with the faulting instruction
===========================================
   0:	65 48 ff 04 25 08 72 	incq   %gs:0xffffffff832a7208
   7:	2a 83 
   9:	41 5f                	pop    %r15
   b:	41 5e                	pop    %r14
   d:	41 5d                	pop    %r13
   f:	41 5c                	pop    %r12
  11:	5b                   	pop    %rbx
  12:	5d                   	pop    %rbp
  13:	e9                   	.byte 0xe9
  14:	45 ad                	rex.RB lods %ds:(%rsi),%eax


To reproduce:

        # build kernel
	cd linux
	cp config-6.1.0-rc1-00051-gf5c1bb2afe93 .config
	make HOSTCC=gcc-11 CC=gcc-11 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage modules
	make HOSTCC=gcc-11 CC=gcc-11 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://github.com/intel/lkp-tests



View attachment "config-6.1.0-rc1-00051-gf5c1bb2afe93" of type "text/plain" (124120 bytes)

View attachment "job-script" of type "text/plain" (4716 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (5616 bytes)

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