From: kernel test robot <oliver.sang@intel.com>
To: <linux+lkp@weissschuh.net>
Cc: <oe-lkp@lists.linux.dev>, <lkp@intel.com>, <oliver.sang@intel.com>
Subject: [thomas-weissschuh:b4/sysfs-const-bin_attr-misc-drivers] [misc] 6b727c4363: BUG:kernel_NULL_pointer_dereference,address
Date: Tue, 17 Dec 2024 21:45:42 +0800 [thread overview]
Message-ID: <202412172123.51ce950b-lkp@intel.com> (raw)
Hello,
kernel test robot noticed "BUG:kernel_NULL_pointer_dereference,address" on:
commit: 6b727c4363e9f98ba2473be67b1b369ea3bec764 ("misc: c2port: Calculate bin_attribute size through group callback")
https://git.kernel.org/cgit/linux/kernel/git/thomas.weissschuh/linux.git b4/sysfs-const-bin_attr-misc-drivers
in testcase: boot
config: i386-randconfig-052-20241216
compiler: gcc-11
test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 4G
(please refer to attached dmesg/kmsg for entire log/backtrace)
+------------------------------------------------+------------+------------+
| | c6b7c45fb4 | 6b727c4363 |
+------------------------------------------------+------------+------------+
| BUG:kernel_NULL_pointer_dereference,address | 0 | 18 |
| Oops | 0 | 18 |
| EIP:c2port_bin_attr_size | 0 | 18 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 18 |
+------------------------------------------------+------------+------------+
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/202412172123.51ce950b-lkp@intel.com
[ 8.459997][ T1] BUG: kernel NULL pointer dereference, address: 00000002
[ 8.460915][ T1] #PF: supervisor read access in kernel mode
[ 8.461649][ T1] #PF: error_code(0x0000) - not-present page
[ 8.461772][ T1] *pdpt = 0000000000000000 *pde = f000ff53f000ff53
[ 8.461772][ T1] Oops: Oops: 0000 [#1] SMP
[ 8.461772][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Tainted: G T 6.13.0-rc2-00367-g6b727c4363e9-dirty #1 c98edbedbb6969f633ed5a9f353ab3662886b9bd
[ 8.461772][ T1] Tainted: [T]=RANDSTRUCT
[ 8.461772][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 8.461772][ T1] EIP: c2port_bin_attr_size (drivers/misc/c2port/core.c:883)
[ 8.461772][ T1] Code: 8b 45 f0 e8 b6 43 75 00 89 d8 e8 d9 fd ff ff 8d 65 f4 89 f8 5b 5e 5f 5d c3 55 89 e5 81 fa 00 70 41 83 75 12 8b 40 40 8b 50 28 <0f> b7 42 02 0f b7 12 0f af c2 eb 03 8b 42 14 5d c3 55 89 e5 53 85
All code
========
0: 8b 45 f0 mov -0x10(%rbp),%eax
3: e8 b6 43 75 00 call 0x7543be
8: 89 d8 mov %ebx,%eax
a: e8 d9 fd ff ff call 0xfffffffffffffde8
f: 8d 65 f4 lea -0xc(%rbp),%esp
12: 89 f8 mov %edi,%eax
14: 5b pop %rbx
15: 5e pop %rsi
16: 5f pop %rdi
17: 5d pop %rbp
18: c3 ret
19: 55 push %rbp
1a: 89 e5 mov %esp,%ebp
1c: 81 fa 00 70 41 83 cmp $0x83417000,%edx
22: 75 12 jne 0x36
24: 8b 40 40 mov 0x40(%rax),%eax
27: 8b 50 28 mov 0x28(%rax),%edx
2a:* 0f b7 42 02 movzwl 0x2(%rdx),%eax <-- trapping instruction
2e: 0f b7 12 movzwl (%rdx),%edx
31: 0f af c2 imul %edx,%eax
34: eb 03 jmp 0x39
36: 8b 42 14 mov 0x14(%rdx),%eax
39: 5d pop %rbp
3a: c3 ret
3b: 55 push %rbp
3c: 89 e5 mov %esp,%ebp
3e: 53 push %rbx
3f: 85 .byte 0x85
Code starting with the faulting instruction
===========================================
0: 0f b7 42 02 movzwl 0x2(%rdx),%eax
4: 0f b7 12 movzwl (%rdx),%edx
7: 0f af c2 imul %edx,%eax
a: eb 03 jmp 0xf
c: 8b 42 14 mov 0x14(%rdx),%eax
f: 5d pop %rbp
10: c3 ret
11: 55 push %rbp
12: 89 e5 mov %esp,%ebp
14: 53 push %rbx
15: 85 .byte 0x85
[ 8.461772][ T1] EAX: 854ecd80 EBX: 00000000 ECX: 00000000 EDX: 00000000
[ 8.461772][ T1] ESI: 83416fa8 EDI: 8197699b EBP: 801ffdb4 ESP: 801ffdb4
[ 8.461772][ T1] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 00010246
[ 8.461772][ T1] CR0: 80050033 CR2: 00000002 CR3: 037fa000 CR4: 000406b0
[ 8.461772][ T1] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[ 8.461772][ T1] DR6: fffe0ff0 DR7: 00000400
[ 8.461772][ T1] Call Trace:
[ 8.461772][ T1] ? show_regs (arch/x86/kernel/dumpstack.c:478)
[ 8.461772][ T1] ? __die_body (arch/x86/kernel/dumpstack.c:421)
[ 8.461772][ T1] ? __die (arch/x86/kernel/dumpstack.c:435)
[ 8.461772][ T1] ? page_fault_oops (arch/x86/mm/fault.c:712)
[ 8.461772][ T1] ? kernelmode_fixup_or_oops+0x46/0x4e
[ 8.461772][ T1] ? __bad_area_nosemaphore+0x2b/0x1c6
[ 8.461772][ T1] ? __lock_release+0xb8/0x165
[ 8.461772][ T1] ? kernfs_activate (fs/kernfs/dir.c:1410)
[ 8.461772][ T1] ? bad_area_nosemaphore (arch/x86/mm/fault.c:835)
[ 8.461772][ T1] ? do_user_addr_fault (arch/x86/mm/fault.c:1280 (discriminator 1))
[ 8.461772][ T1] ? exc_page_fault (arch/x86/include/asm/irqflags.h:26 arch/x86/include/asm/irqflags.h:87 arch/x86/include/asm/irqflags.h:147 arch/x86/mm/fault.c:1489 arch/x86/mm/fault.c:1539)
[ 8.461772][ T1] ? pvclock_clocksource_read_nowd (arch/x86/mm/fault.c:1494)
[ 8.461772][ T1] ? handle_exception (arch/x86/entry/entry_32.S:1055)
[ 8.461772][ T1] ? als_lux0_input_data_show (drivers/misc/c2port/core.c:879)
[ 8.461772][ T1] ? kernfs_path_from_node_locked (fs/kernfs/dir.c:178)
[ 8.461772][ T1] ? pvclock_clocksource_read_nowd (arch/x86/mm/fault.c:1494)
[ 8.461772][ T1] ? c2port_bin_attr_size (drivers/misc/c2port/core.c:883)
[ 8.461772][ T1] ? pvclock_clocksource_read_nowd (arch/x86/mm/fault.c:1494)
[ 8.461772][ T1] ? c2port_bin_attr_size (drivers/misc/c2port/core.c:883)
[ 8.461772][ T1] create_files (fs/sysfs/group.c:102)
[ 8.461772][ T1] internal_create_group (fs/sysfs/group.c:183)
[ 8.461772][ T1] internal_create_groups (fs/sysfs/group.c:224)
[ 8.461772][ T1] sysfs_create_groups (fs/sysfs/group.c:250)
[ 8.461772][ T1] device_add_attrs (drivers/base/core.c:2812 drivers/base/core.c:2876)
[ 8.461772][ T1] ? sysfs_do_create_link (fs/sysfs/symlink.c:80)
[ 8.461772][ T1] device_add (drivers/base/core.c:3619)
[ 8.461772][ T1] ? kfree_const (mm/util.c:44)
[ 8.461772][ T1] device_create_groups_vargs (drivers/base/core.c:4392)
[ 8.461772][ T1] device_create (drivers/base/core.c:4435)
[ 8.461772][ T1] c2port_device_register (drivers/misc/c2port/core.c:928)
[ 8.461772][ T1] duramar2150_c2port_init (drivers/misc/c2port/c2port-duramar2150.c:127)
[ 8.461772][ T1] ? c2port_init (drivers/misc/c2port/c2port-duramar2150.c:119)
[ 8.461772][ T1] do_one_initcall (init/main.c:1266)
[ 8.461772][ T1] do_initcalls (init/main.c:1327 init/main.c:1344)
[ 8.461772][ T1] ? irq_to_desc (kernel/irq/irqdesc.c:452)
[ 8.461772][ T1] kernel_init_freeable (init/main.c:1579)
[ 8.461772][ T1] ? rest_init (init/main.c:1458)
[ 8.461772][ T1] kernel_init (init/main.c:1468)
[ 8.461772][ T1] ret_from_fork (arch/x86/kernel/process.c:153)
[ 8.461772][ T1] ? rest_init (init/main.c:1458)
[ 8.461772][ T1] ret_from_fork_asm (arch/x86/entry/entry_32.S:737)
[ 8.461772][ T1] entry_INT80_32 (arch/x86/entry/entry_32.S:942)
[ 8.461772][ T1] Modules linked in:
[ 8.461772][ T1] CR2: 0000000000000002
[ 8.461772][ T1] ---[ end trace 0000000000000000 ]---
[ 8.461772][ T1] EIP: c2port_bin_attr_size (drivers/misc/c2port/core.c:883)
[ 8.461772][ T1] Code: 8b 45 f0 e8 b6 43 75 00 89 d8 e8 d9 fd ff ff 8d 65 f4 89 f8 5b 5e 5f 5d c3 55 89 e5 81 fa 00 70 41 83 75 12 8b 40 40 8b 50 28 <0f> b7 42 02 0f b7 12 0f af c2 eb 03 8b 42 14 5d c3 55 89 e5 53 85
All code
========
0: 8b 45 f0 mov -0x10(%rbp),%eax
3: e8 b6 43 75 00 call 0x7543be
8: 89 d8 mov %ebx,%eax
a: e8 d9 fd ff ff call 0xfffffffffffffde8
f: 8d 65 f4 lea -0xc(%rbp),%esp
12: 89 f8 mov %edi,%eax
14: 5b pop %rbx
15: 5e pop %rsi
16: 5f pop %rdi
17: 5d pop %rbp
18: c3 ret
19: 55 push %rbp
1a: 89 e5 mov %esp,%ebp
1c: 81 fa 00 70 41 83 cmp $0x83417000,%edx
22: 75 12 jne 0x36
24: 8b 40 40 mov 0x40(%rax),%eax
27: 8b 50 28 mov 0x28(%rax),%edx
2a:* 0f b7 42 02 movzwl 0x2(%rdx),%eax <-- trapping instruction
2e: 0f b7 12 movzwl (%rdx),%edx
31: 0f af c2 imul %edx,%eax
34: eb 03 jmp 0x39
36: 8b 42 14 mov 0x14(%rdx),%eax
39: 5d pop %rbp
3a: c3 ret
3b: 55 push %rbp
3c: 89 e5 mov %esp,%ebp
3e: 53 push %rbx
3f: 85 .byte 0x85
Code starting with the faulting instruction
===========================================
0: 0f b7 42 02 movzwl 0x2(%rdx),%eax
4: 0f b7 12 movzwl (%rdx),%edx
7: 0f af c2 imul %edx,%eax
a: eb 03 jmp 0xf
c: 8b 42 14 mov 0x14(%rdx),%eax
f: 5d pop %rbp
10: c3 ret
11: 55 push %rbp
12: 89 e5 mov %esp,%ebp
14: 53 push %rbx
15: 85 .byte 0x85
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20241217/202412172123.51ce950b-lkp@intel.com
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2024-12-17 13:46 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=202412172123.51ce950b-lkp@intel.com \
--to=oliver.sang@intel.com \
--cc=linux+lkp@weissschuh.net \
--cc=lkp@intel.com \
--cc=oe-lkp@lists.linux.dev \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.