Hello,
kernel test robot noticed "WARNING:at_arch/x86/mm/fault.c:#do_user_addr_fault" on:
commit: cf5dec6389f307a43c6c494660e28f16c7e0265a ("mm: fix powerpc build issue")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
[test failed on linux-next/master a053fd3ca5d1b927a8655f239c84b0d790218fda]
in testcase: boot
compiler: clang-17
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
(please refer to attached dmesg/kmsg for entire log/backtrace)
+----------------------------------------------------+------------+------------+
| | d9130022ad | cf5dec6389 |
+----------------------------------------------------+------------+------------+
| WARNING:at_arch/x86/mm/fault.c:#do_user_addr_fault | 0 | 6 |
| EIP:do_user_addr_fault | 0 | 6 |
| EIP:string | 0 | 6 |
| BUG:unable_to_handle_page_fault_for_address | 0 | 6 |
| Oops:#[##] | 0 | 6 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 6 |
+----------------------------------------------------+------------+------------+
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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-lkp/202404121129.c53d5406-oliver.sang@xxxxxxxxx
[ 122.507941][ T251] ------------[ cut here ]------------
[ 122.508786][ T251] ------------[ cut here ]------------
[ 122.509528][ T251] WARNING: CPU: 1 PID: 251 at arch/x86/mm/fault.c:1308 do_user_addr_fault (arch/x86/mm/fault.c:1308)
[ 122.510801][ T251] Modules linked in: crc32_pclmul aesni_intel crypto_simd evdev drm drm_panel_orientation_quirks firmware_class zstd_decompress zstd_common autofs4
[ 122.512743][ T251] CPU: 1 PID: 251 Comm: dpkg-deb Tainted: G W N 6.9.0-rc2-00330-gcf5dec6389f3 #1
[ 122.514132][ T251] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 122.515462][ T251] EIP: do_user_addr_fault (arch/x86/mm/fault.c:1308)
[ 122.516186][ T251] Code: 03 00 00 83 c4 04 e9 ba fd ff ff 0f 0b e9 b3 fd ff ff 89 f9 89 da 56 e8 ff 06 00 00 8b 55 e8 8b 4d e4 83 c4 04 e9 c8 fc ff ff <0f> 0b 89 f9 89 da 56 e8 b5 00 00 00 83 c4 04 e9 87 fd ff ff 8b 45
All code
========
0: 03 00 add (%rax),%eax
2: 00 83 c4 04 e9 ba add %al,-0x4516fb3c(%rbx)
8: fd std
9: ff (bad)
a: ff 0f decl (%rdi)
c: 0b e9 or %ecx,%ebp
e: b3 fd mov $0xfd,%bl
10: ff (bad)
11: ff 89 f9 89 da 56 decl 0x56da89f9(%rcx)
17: e8 ff 06 00 00 call 0x71b
1c: 8b 55 e8 mov -0x18(%rbp),%edx
1f: 8b 4d e4 mov -0x1c(%rbp),%ecx
22: 83 c4 04 add $0x4,%esp
25: e9 c8 fc ff ff jmp 0xfffffffffffffcf2
2a:* 0f 0b ud2 <-- trapping instruction
2c: 89 f9 mov %edi,%ecx
2e: 89 da mov %ebx,%edx
30: 56 push %rsi
31: e8 b5 00 00 00 call 0xeb
36: 83 c4 04 add $0x4,%esp
39: e9 87 fd ff ff jmp 0xfffffffffffffdc5
3e: 8b .byte 0x8b
3f: 45 rex.RB
Code starting with the faulting instruction
===========================================
0: 0f 0b ud2
2: 89 f9 mov %edi,%ecx
4: 89 da mov %ebx,%edx
6: 56 push %rsi
7: e8 b5 00 00 00 call 0xc1
c: 83 c4 04 add $0x4,%esp
f: e9 87 fd ff ff jmp 0xfffffffffffffd9b
14: 8b .byte 0x8b
15: 45 rex.RB
[ 122.518827][ T251] EAX: 80000000 EBX: 00000000 ECX: ecd11e00 EDX: eceaf3c0
[ 122.519822][ T251] ESI: 80000040 EDI: ecf11cdc EBP: ecf11cb8 ESP: ecf11c8c
[ 122.520643][ T251] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 EFLAGS: 00010046
[ 122.521539][ T251] CR0: 80050033 CR2: 80000040 CR3: 2cc98000 CR4: 00040690
[ 122.522448][ T251] Call Trace:
[ 122.522885][ T251] ? show_regs (arch/x86/kernel/dumpstack.c:478)
[ 122.523435][ T251] ? __warn (kernel/panic.c:240 kernel/panic.c:694)
[ 122.523958][ T251] ? do_user_addr_fault (arch/x86/mm/fault.c:1308)
[ 122.524553][ T251] ? report_bug (lib/bug.c:199)
[ 122.525103][ T251] ? exc_overflow (arch/x86/kernel/traps.c:252)
[ 122.525624][ T251] ? handle_bug (arch/x86/kernel/traps.c:239)
[ 122.526180][ T251] ? exc_invalid_op (arch/x86/kernel/traps.c:260)
[ 122.526753][ T251] ? handle_exception (arch/x86/entry/entry_32.S:1054)
[ 122.527347][ T251] ? xas_create_range (lib/xarray.c:729)
[ 122.527986][ T251] ? xas_create_range (lib/xarray.c:729)
[ 122.528578][ T251] ? exc_overflow (arch/x86/kernel/traps.c:252)
[ 122.529134][ T251] ? do_user_addr_fault (arch/x86/mm/fault.c:1308)
[ 122.529801][ T251] ? exc_overflow (arch/x86/kernel/traps.c:252)
[ 122.530345][ T251] ? do_user_addr_fault (arch/x86/mm/fault.c:1308)
[ 122.530992][ T251] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67)
[ 122.531680][ T251] exc_page_fault (arch/x86/include/asm/irqflags.h:19 arch/x86/include/asm/irqflags.h:67 arch/x86/include/asm/irqflags.h:127 arch/x86/mm/fault.c:1519 arch/x86/mm/fault.c:1569)
[ 122.532252][ T251] ? pvclock_clocksource_read_nowd (arch/x86/mm/fault.c:1524)
[ 122.533061][ T251] handle_exception (arch/x86/entry/entry_32.S:1054)
[ 122.533679][ T251] EIP: string (lib/vsprintf.c:646)
[ 122.534266][ T251] Code: 54 24 04 85 f6 75 4b 31 f6 eb 79 89 04 24 89 54 24 04 c1 fa 10 74 78 31 ff eb 0c 90 90 90 90 90 90 90 47 39 fa 74 6e 8d 34 39 <0f> b6 04 3b 84 c0 74 69 3b 74 24 08 73 ea 88 06 eb e6 89 c6 0f b7
All code
========
0: 54 push %rsp
1: 24 04 and $0x4,%al
3: 85 f6 test %esi,%esi
5: 75 4b jne 0x52
7: 31 f6 xor %esi,%esi
9: eb 79 jmp 0x84
b: 89 04 24 mov %eax,(%rsp)
e: 89 54 24 04 mov %edx,0x4(%rsp)
12: c1 fa 10 sar $0x10,%edx
15: 74 78 je 0x8f
17: 31 ff xor %edi,%edi
19: eb 0c jmp 0x27
1b: 90 nop
1c: 90 nop
1d: 90 nop
1e: 90 nop
1f: 90 nop
20: 90 nop
21: 90 nop
22: 47 39 fa rex.RXB cmp %r15d,%r10d
25: 74 6e je 0x95
27: 8d 34 39 lea (%rcx,%rdi,1),%esi
2a:* 0f b6 04 3b movzbl (%rbx,%rdi,1),%eax <-- trapping instruction
2e: 84 c0 test %al,%al
30: 74 69 je 0x9b
32: 3b 74 24 08 cmp 0x8(%rsp),%esi
36: 73 ea jae 0x22
38: 88 06 mov %al,(%rsi)
3a: eb e6 jmp 0x22
3c: 89 c6 mov %eax,%esi
3e: 0f .byte 0xf
3f: b7 .byte 0xb7
Code starting with the faulting instruction
===========================================
0: 0f b6 04 3b movzbl (%rbx,%rdi,1),%eax
4: 84 c0 test %al,%al
6: 74 69 je 0x71
8: 3b 74 24 08 cmp 0x8(%rsp),%esi
c: 73 ea jae 0xfffffffffffffff8
e: 88 06 mov %al,(%rsi)
10: eb e6 jmp 0xfffffffffffffff8
12: 89 c6 mov %eax,%esi
14: 0f .byte 0xf
15: b7 .byte 0xb7
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20240412/202404121129.c53d5406-oliver.sang@xxxxxxxxx
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
