Hello,
kernel test robot noticed "WARNING:at_mm/sparse.c:#sparse_init" on:
commit: a20f815a6f361e18a0a2a9480b5a5340c5860c7f ("[PATCH v2 07/11] x86: drop SWIOTLB and PHYS_ADDR_T_64BIT for PAE")
url: https://github.com/intel-lab-lkp/linux/commits/Arnd-Bergmann/x86-Kconfig-Geode-CPU-has-cmpxchg8b/20241210-225443
base: https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git f576cfc3d433316990802cd521ddea645eb3971b
patch link: https://lore.kernel.org/all/20241210144945.2325330-8-arnd@xxxxxxxxxx/
patch subject: [PATCH v2 07/11] x86: drop SWIOTLB and PHYS_ADDR_T_64BIT for PAE
in testcase: boot
config: i386-randconfig-001-20241213
compiler: gcc-12
test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 4G
(please refer to attached dmesg/kmsg for entire log/backtrace)
+------------------------------------------------+------------+------------+
| | 620a8e2d2b | a20f815a6f |
+------------------------------------------------+------------+------------+
| WARNING:at_mm/sparse.c:#sparse_init | 0 | 12 |
| EIP:sparse_init | 0 | 12 |
| BUG:kernel_NULL_pointer_dereference,address | 0 | 12 |
| Oops | 0 | 12 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 12 |
+------------------------------------------------+------------+------------+
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/202412201005.77fb063-lkp@xxxxxxxxx
[ 0.068283][ T0] ------------[ cut here ]------------
[ 0.068644][ T0] WARNING: CPU: 0 PID: 0 at mm/sparse.c:149 sparse_init (mm/sparse.c:149 mm/sparse.c:227 mm/sparse.c:268 mm/sparse.c:565)
[ 0.069169][ T0] Modules linked in:
[ 0.069424][ T0] CPU: 0 UID: 0 PID: 0 Comm: swapper Not tainted 6.13.0-rc2-00153-ga20f815a6f36 #1 55e1ad47972e976fedebf027f6853ef569639c5a
[ 0.070285][ T0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 0.070972][ T0] EIP: sparse_init (mm/sparse.c:149 mm/sparse.c:227 mm/sparse.c:268 mm/sparse.c:565)
[ 0.071277][ T0] Code: 85 d2 74 d1 8b 0d 44 5f 72 b2 85 c9 7e 1c 89 54 24 08 31 c0 31 d2 89 44 24 0c 89 54 24 04 c7 04 24 d8 e5 04 b2 e8 55 ea a2 fe <0f> 0b eb a7 90 8b 0d 80 16 e7 b2 31 d2 8d b4 26 00 00 00 00 90 83
All code
========
0: 85 d2 test %edx,%edx
2: 74 d1 je 0xffffffffffffffd5
4: 8b 0d 44 5f 72 b2 mov -0x4d8da0bc(%rip),%ecx # 0xffffffffb2725f4e
a: 85 c9 test %ecx,%ecx
c: 7e 1c jle 0x2a
e: 89 54 24 08 mov %edx,0x8(%rsp)
12: 31 c0 xor %eax,%eax
14: 31 d2 xor %edx,%edx
16: 89 44 24 0c mov %eax,0xc(%rsp)
1a: 89 54 24 04 mov %edx,0x4(%rsp)
1e: c7 04 24 d8 e5 04 b2 movl $0xb204e5d8,(%rsp)
25: e8 55 ea a2 fe call 0xfffffffffea2ea7f
2a:* 0f 0b ud2 <-- trapping instruction
2c: eb a7 jmp 0xffffffffffffffd5
2e: 90 nop
2f: 8b 0d 80 16 e7 b2 mov -0x4d18e980(%rip),%ecx # 0xffffffffb2e716b5
35: 31 d2 xor %edx,%edx
37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi
3e: 90 nop
3f: 83 .byte 0x83
Code starting with the faulting instruction
===========================================
0: 0f 0b ud2
2: eb a7 jmp 0xffffffffffffffab
4: 90 nop
5: 8b 0d 80 16 e7 b2 mov -0x4d18e980(%rip),%ecx # 0xffffffffb2e7168b
b: 31 d2 xor %edx,%edx
d: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi
14: 90 nop
15: 83 .byte 0x83
[ 0.072580][ T0] EAX: 00000000 EBX: b218feb4 ECX: 00000000 EDX: 0000009f
[ 0.073047][ T0] ESI: b218febc EDI: 00000000 EBP: b218fecc ESP: b218feb4
[ 0.073513][ T0] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: febc EFLAGS: 00210046
[ 0.074016][ T0] CR0: 80050033 CR2: 00000000 CR3: 02773000 CR4: 00000090
[ 0.074492][ T0] Call Trace:
[ 0.074709][ T0] ? show_regs (arch/x86/kernel/dumpstack.c:479)
[ 0.074989][ T0] ? sparse_init (mm/sparse.c:149 mm/sparse.c:227 mm/sparse.c:268 mm/sparse.c:565)
[ 0.075283][ T0] ? __warn (kernel/panic.c:748)
[ 0.075550][ T0] ? sparse_init (mm/sparse.c:149 mm/sparse.c:227 mm/sparse.c:268 mm/sparse.c:565)
[ 0.075845][ T0] ? sparse_init (mm/sparse.c:149 mm/sparse.c:227 mm/sparse.c:268 mm/sparse.c:565)
[ 0.076140][ T0] ? report_bug (lib/bug.c:180 lib/bug.c:219)
[ 0.076437][ T0] ? sparse_init (mm/sparse.c:149 mm/sparse.c:227 mm/sparse.c:268 mm/sparse.c:565)
[ 0.076731][ T0] ? early_fixup_exception (arch/x86/mm/extable.c:415)
[ 0.077081][ T0] ? early_idt_handler_common (arch/x86/kernel/head_32.S:352)
[ 0.077450][ T0] ? register_lock_class (kernel/locking/lockdep.c:195 kernel/locking/lockdep.c:1322)
[ 0.077799][ T0] ? sparse_init (mm/sparse.c:149 mm/sparse.c:227 mm/sparse.c:268 mm/sparse.c:565)
[ 0.078113][ T0] ? native_flush_tlb_global (arch/x86/include/asm/irqflags.h:154 arch/x86/mm/tlb.c:1225)
[ 0.078480][ T0] paging_init (arch/x86/mm/init_32.c:685)
[ 0.078759][ T0] native_pagetable_init (arch/x86/mm/init_32.c:481)
[ 0.079101][ T0] ? _printk (kernel/printk/printk.c:2461)
[ 0.079367][ T0] ? dma_contiguous_reserve (kernel/dma/contiguous.c:250)
[ 0.079722][ T0] setup_arch (arch/x86/kernel/setup.c:1130)
[ 0.080011][ T0] start_kernel (init/main.c:924 (discriminator 3))
[ 0.080301][ T0] ? load_ucode_bsp (arch/x86/kernel/cpu/microcode/core.c:135)
[ 0.080622][ T0] i386_start_kernel (??:?)
[ 0.080936][ T0] startup_32_smp (arch/x86/kernel/head_32.S:292)
[ 0.081247][ T0] irq event stamp: 0
[ 0.081500][ T0] hardirqs last enabled at (0): 0x0
[ 0.081922][ T0] hardirqs last disabled at (0): 0x0
[ 0.082349][ T0] softirqs last enabled at (0): 0x0
[ 0.082771][ T0] softirqs last disabled at (0): 0x0
[ 0.083193][ T0] ---[ end trace 0000000000000000 ]---
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20241220/202412201005.77fb063-lkp@xxxxxxxxx
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
