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d893aca973
Kernel test robot reports the following crash on 32-bit system with HIGHMEM and DEBUG_VIRTUAL: [ 0.056128][ T0] kernel BUG at arch/x86/mm/physaddr.c:77! PANIC: early exception 0x06 IP 60:c116539d error 0 cr2 0x0 [ 0.056916][ T0] CPU: 0 UID: 0 PID: 0 Comm: swapper Not tainted 6.14.0-rc4-00010-ga4dbe5c71817 #1 [ 0.057570][ T0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 0.058299][ T0] EIP: __phys_addr (arch/x86/mm/physaddr.c:77) [ 0.058633][ T0] Code: 00 74 33 89 f0 e8 d3 8b 2e 00 89 c3 0f b6 d0 b8 58 bb 4b c5 31 c9 6a 00 e8 70 f5 15 00 83 c4 04 84 db 74 25 ff 05 78 de 5d c5 <0f> 0b b8 c8 91 ea c4 e8 e7 6e ea ff b8 58 bb 4b c5 31 d2 31 c9 6a All code [ 0.060017][ T0] EAX: 00000000 EBX: c61f7001 ECX: 00000000 EDX: 00000000 [ 0.060519][ T0] ESI: c61f7000 EDI: 061f7000 EBP: c4e31f04 ESP: c61f7000 [ 0.061016][ T0] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: cff4 EFLAGS: 00210002 [ 0.061560][ T0] CR0: 80050033 CR2: 00000000 CR3: 059fc000 CR4: 00000090 [ 0.062060][ T0] Call Trace: [ 0.062288][ T0] ? show_regs (arch/x86/kernel/dumpstack.c:478) [ 0.062588][ T0] ? early_fixup_exception (arch/x86/include/asm/nospec-branch.h:595) [ 0.062968][ T0] ? early_idt_handler_common (arch/x86/kernel/head_32.S:352) [ 0.063360][ T0] ? __phys_addr (arch/x86/mm/physaddr.c:77) [ 0.063677][ T0] ? one_page_table_init (arch/x86/mm/init_32.c:100) [ 0.064037][ T0] ? page_table_range_init (arch/x86/mm/init_32.c:227) [ 0.064411][ T0] ? permanent_kmaps_init (include/linux/pgtable.h:191 include/linux/pgtable.h:196 arch/x86/mm/init_32.c:395) [ 0.064814][ T0] ? paging_init (arch/x86/mm/init_32.c:677) [ 0.065118][ T0] ? native_pagetable_init (arch/x86/mm/init_32.c:481) [ 0.065503][ T0] ? setup_arch (arch/x86/kernel/setup.c:1131) [ 0.065819][ T0] ? start_kernel (include/linux/jump_label.h:267 init/main.c:920) [ 0.066143][ T0] ? i386_start_kernel (arch/x86/kernel/head32.c:79) [ 0.066501][ T0] ? startup_32_smp (arch/x86/kernel/head_32.S:292) The crash happens because commit |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.