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Date: Fri, 19 Jan 2024 17:27:28 +0800
From: kernel test robot <oliver.sang@intel.com>
To: Joel Granados <j.granados@samsung.com>
CC: <oe-lkp@lists.linux.dev>, <lkp@intel.com>, <linux-kernel@vger.kernel.org>,
	<linux-fsdevel@vger.kernel.org>, <netdev@vger.kernel.org>,
	<oliver.sang@intel.com>
Subject: [joel-granados:jag/sysctl_remove_empty_elem] [sysctl] 15acdfcefd:
 sysctl_table_check_failed
Message-ID: <202401191627.63051dd8-oliver.sang@intel.com>
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Hello,

kernel test robot noticed "sysctl_table_check_failed" on:

commit: 15acdfcefdf6023d165779105b254cc410297526 ("sysctl: remove the check for the end empty element")
https://git.kernel.org/cgit/linux/kernel/git/joel.granados/linux.git jag/sysctl_remove_empty_elem

in testcase: boot

compiler: gcc-12
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G

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


+------------------------------------------+------------+------------+
|                                          | 19bcf4e935 | 15acdfcefd |
+------------------------------------------+------------+------------+
| boot_successes                           | 19         | 0          |
| boot_failures                            | 0          | 25         |
| sysctl_table_check_failed                | 0          | 25         |
| kernel_BUG_at_kernel/ucount.c            | 0          | 25         |
| invalid_opcode:#[##]                     | 0          | 25         |
| RIP:user_namespace_sysctl_init           | 0          | 25         |
| Kernel_panic-not_syncing:Fatal_exception | 0          | 25         |
+------------------------------------------+------------+------------+


If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202401191627.63051dd8-oliver.sang@intel.com


[    0.403101][    T1] sysctl table check failed: user/(null) No proc_handler
[    0.404663][    T1] ------------[ cut here ]------------
[    0.405346][    T1] kernel BUG at kernel/ucount.c:371!
[    0.406217][    T1] invalid opcode: 0000 [#1] SMP PTI
[    0.406343][    T1] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 6.7.0-rc6-00006-g15acdfcefdf6 #1
[    0.406343][    T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[    0.406343][    T1] RIP: 0010:user_namespace_sysctl_init+0xcb/0xf0
[    0.406343][    T1] Code: 2d 72 64 4c ff c6 07 00 0f 1f 00 fb ba 01 00 00 00 31 f6 48 c7 c7 20 5c a5 90 e8 00 ab 9b fd 31 c0 5b 5d c3 cc cc cc cc 0f 0b <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 66 2e 0f 1f 84 00 00 00 00 00
[    0.406343][    T1] RSP: 0000:ffffb68040013de8 EFLAGS: 00010246
[    0.406343][    T1] RAX: 0000000000000000 RBX: ffffffff9158f710 RCX: 00000000000000b8
[    0.406343][    T1] RDX: 0000000000000000 RSI: 0000000000037160 RDI: ffffffff90a4e020
[    0.406343][    T1] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffb68040013b90
[    0.406343][    T1] R10: 0000000000000003 R11: ffffffff90ddd6e8 R12: ffff99113fc7a000
[    0.406343][    T1] R13: ffffb68040013e00 R14: 000000000000040d R15: 0000000000000000
[    0.406343][    T1] FS:  0000000000000000(0000) GS:ffff99113fd00000(0000) knlGS:0000000000000000
[    0.406343][    T1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    0.406343][    T1] CR2: 0000000000000000 CR3: 0000000433c1c000 CR4: 00000000000406f0
[    0.406343][    T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    0.406343][    T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    0.406343][    T1] Call Trace:
[    0.406343][    T1]  <TASK>
[    0.406343][    T1]  ? die+0x36/0xb0
[    0.406343][    T1]  ? do_trap+0xda/0x130
[    0.406343][    T1]  ? user_namespace_sysctl_init+0xcb/0xf0
[    0.406343][    T1]  ? do_error_trap+0x65/0xb0
[    0.406343][    T1]  ? user_namespace_sysctl_init+0xcb/0xf0
[    0.406343][    T1]  ? exc_invalid_op+0x50/0x70
[    0.406343][    T1]  ? user_namespace_sysctl_init+0xcb/0xf0
[    0.406343][    T1]  ? asm_exc_invalid_op+0x1a/0x20
[    0.406343][    T1]  ? __pfx_user_namespace_sysctl_init+0x10/0x10
[    0.406343][    T1]  ? user_namespace_sysctl_init+0xcb/0xf0
[    0.406343][    T1]  ? user_namespace_sysctl_init+0x35/0xf0
[    0.406343][    T1]  ? __pfx_user_namespace_sysctl_init+0x10/0x10
[    0.406343][    T1]  do_one_initcall+0x5b/0x2f0
[    0.406343][    T1]  do_initcalls+0xc6/0x170
[    0.406343][    T1]  kernel_init_freeable+0x25c/0x330
[    0.406343][    T1]  ? __pfx_kernel_init+0x10/0x10
[    0.406343][    T1]  kernel_init+0x1a/0x1f0
[    0.406343][    T1]  ret_from_fork+0x34/0x70
[    0.406343][    T1]  ? __pfx_kernel_init+0x10/0x10
[    0.406343][    T1]  ret_from_fork_asm+0x1b/0x30
[    0.406343][    T1]  </TASK>
[    0.406343][    T1] Modules linked in:
[    0.436350][    T1] ---[ end trace 0000000000000000 ]---
[    0.436931][    T1] RIP: 0010:user_namespace_sysctl_init+0xcb/0xf0
[    0.437526][    T1] Code: 2d 72 64 4c ff c6 07 00 0f 1f 00 fb ba 01 00 00 00 31 f6 48 c7 c7 20 5c a5 90 e8 00 ab 9b fd 31 c0 5b 5d c3 cc cc cc cc 0f 0b <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 66 2e 0f 1f 84 00 00 00 00 00
[    0.439835][    T1] RSP: 0000:ffffb68040013de8 EFLAGS: 00010246
[    0.440346][    T1] RAX: 0000000000000000 RBX: ffffffff9158f710 RCX: 00000000000000b8
[    0.441190][    T1] RDX: 0000000000000000 RSI: 0000000000037160 RDI: ffffffff90a4e020
[    0.441598][    T1] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffb68040013b90
[    0.442345][    T1] R10: 0000000000000003 R11: ffffffff90ddd6e8 R12: ffff99113fc7a000
[    0.443229][    T1] R13: ffffb68040013e00 R14: 000000000000040d R15: 0000000000000000
[    0.444599][    T1] FS:  0000000000000000(0000) GS:ffff99113fd00000(0000) knlGS:0000000000000000
[    0.445346][    T1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    0.446029][    T1] CR2: 0000000000000000 CR3: 0000000433c1c000 CR4: 00000000000406f0
[    0.446598][    T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    0.447346][    T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    0.448197][    T1] Kernel panic - not syncing: Fatal exception


The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20240119/202401191627.63051dd8-oliver.sang@intel.com


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