* [thomas-weissschuh:b4/sysfs-const-bin_attr-misc-drivers] [misc] 6b727c4363: BUG:kernel_NULL_pointer_dereference,address
@ 2024-12-17 13:45 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2024-12-17 13:45 UTC (permalink / raw)
To: linux+lkp; +Cc: oe-lkp, lkp, oliver.sang
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
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2024-12-17 13:45 [thomas-weissschuh:b4/sysfs-const-bin_attr-misc-drivers] [misc] 6b727c4363: BUG:kernel_NULL_pointer_dereference,address kernel test robot
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