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ARCH_SUPPORTS_NON_LEAF_PTDUMP") url: https://github.com/intel-lab-lkp/linux/commits/Maxwell-Bland/mm-add-ARCH_SUPPORTS_NON_LEAF_PTDUMP/20240626-022827 base: https://git.kernel.org/cgit/linux/kernel/git/arm64/linux.git for-next/core patch link: https://lore.kernel.org/all/yrgrhwfbl7rnmgekiolmojutaqf24x5zphyrwijakzma5pjhre@3yncjv5tqvar/ patch subject: [PATCH v5 1/6] mm: add ARCH_SUPPORTS_NON_LEAF_PTDUMP in testcase: rcutorture version: with following parameters: runtime: 300s test: cpuhotplug torture_type: srcu compiler: clang-18 test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G (please refer to attached dmesg/kmsg for entire log/backtrace) +-----------------------------------------------------+------------+------------+ | | 39b9075172 | 14095f3901 | +-----------------------------------------------------+------------+------------+ | WARNING:at_arch/x86/mm/dump_pagetables.c:#note_page | 0 | 12 | | RIP:note_page | 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 | Closes: https://lore.kernel.org/oe-lkp/202407051002.96bf438-oliver.sang@intel.com [ 12.539216][ T1] ------------[ cut here ]------------ [ 12.539661][ T1] x86/mm: Found insecure W+X mapping at address 0xffff8a0000000000 [ 12.540267][ T1] WARNING: CPU: 0 PID: 1 at arch/x86/mm/dump_pagetables.c:248 note_page (arch/x86/mm/dump_pagetables.c:246) [ 12.540995][ T1] Modules linked in: [ 12.541300][ T1] CPU: 0 PID: 1 Comm: swapper Not tainted 6.10.0-rc3-00027-g14095f3901f4 #1 [ 12.541987][ T1] RIP: 0010:note_page (arch/x86/mm/dump_pagetables.c:246) [ 12.542465][ T1] Code: 0d ba e8 2a 28 0a 01 e9 78 fe ff ff e8 a0 17 1a 00 c6 05 e5 bc 72 02 01 90 48 8b 73 58 48 c7 c7 00 91 16 ba e8 08 d2 08 00 90 <0f> 0b 90 90 e9 5f f7 ff ff e8 79 17 1a 00 89 ee 48 c7 c7 f0 34 46 All code ======== 0: 0d ba e8 2a 28 or $0x282ae8ba,%eax 5: 0a 01 or (%rcx),%al 7: e9 78 fe ff ff jmp 0xfffffffffffffe84 c: e8 a0 17 1a 00 call 0x1a17b1 11: c6 05 e5 bc 72 02 01 movb $0x1,0x272bce5(%rip) # 0x272bcfd 18: 90 nop 19: 48 8b 73 58 mov 0x58(%rbx),%rsi 1d: 48 c7 c7 00 91 16 ba mov $0xffffffffba169100,%rdi 24: e8 08 d2 08 00 call 0x8d231 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: e9 5f f7 ff ff jmp 0xfffffffffffff792 33: e8 79 17 1a 00 call 0x1a17b1 38: 89 ee mov %ebp,%esi 3a: 48 rex.W 3b: c7 .byte 0xc7 3c: c7 (bad) 3d: f0 34 46 lock xor $0x46,%al Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: e9 5f f7 ff ff jmp 0xfffffffffffff768 9: e8 79 17 1a 00 call 0x1a1787 e: 89 ee mov %ebp,%esi 10: 48 rex.W 11: c7 .byte 0xc7 12: c7 (bad) 13: f0 34 46 lock xor $0x46,%al [ 12.544127][ T1] RSP: 0000:ffffab0600013c40 EFLAGS: 00010293 [ 12.548776][ T1] RAX: ffffffffb85090a7 RBX: ffffab0600013e38 RCX: ffff8a1f806b8000 [ 12.549432][ T1] RDX: 0000000000000000 RSI: 00000000ffff7fff RDI: ffffffffba63a550 [ 12.550073][ T1] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001 [ 12.550737][ T1] R10: 0000000000000000 R11: ffffffffb8ca1100 R12: 0000000000000000 [ 12.551383][ T1] R13: ffff8a0000000000 R14: 0000000000000067 R15: 0000000000000067 [ 12.552048][ T1] FS: 0000000000000000(0000) GS:ffffffffba45f000(0000) knlGS:0000000000000000 [ 12.552780][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 12.553335][ T1] CR2: ffff8a22bffff000 CR3: 0000000102c30000 CR4: 00000000000406b0 [ 12.553993][ T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 12.554730][ T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 12.555398][ T1] Call Trace: [ 12.555676][ T1] [ 12.555924][ T1] ? __warn (kernel/panic.c:239) [ 12.556257][ T1] ? note_page (arch/x86/mm/dump_pagetables.c:246) [ 12.556625][ T1] ? report_bug (lib/bug.c:?) [ 12.557009][ T1] ? handle_bug (arch/x86/kernel/traps.c:239) [ 12.557371][ T1] ? exc_invalid_op (arch/x86/kernel/traps.c:260) [ 12.557760][ T1] ? asm_exc_invalid_op (arch/x86/include/asm/idtentry.h:621) [ 12.558171][ T1] ? io_serial_in (arch/x86/kernel/early_printk.c:121) [ 12.558591][ T1] ? __warn_printk (include/linux/context_tracking.h:155) [ 12.559010][ T1] ? note_page (arch/x86/mm/dump_pagetables.c:246) [ 12.559384][ T1] ? note_page (arch/x86/mm/dump_pagetables.c:252) [ 12.559751][ T1] ptdump_p4d_entry (mm/ptdump.c:79) [ 12.560149][ T1] walk_pgd_range (mm/pagewalk.c:250) [ 12.560567][ T1] ? lock_acquire (kernel/locking/lockdep.c:5754) [ 12.560941][ T1] walk_page_range_novma (mm/pagewalk.c:589) [ 12.561367][ T1] ptdump_walk_pgd (mm/ptdump.c:167) [ 12.561761][ T1] ? rest_init (init/main.c:1459) [ 12.562131][ T1] ptdump_walk_pgd_level_checkwx (arch/x86/mm/dump_pagetables.c:395 arch/x86/mm/dump_pagetables.c:444) [ 12.562636][ T1] ? ptdump_walk_pgd_level_core (arch/x86/mm/dump_pagetables.c:276) [ 12.563115][ T1] ? note_page (arch/x86/mm/dump_pagetables.c:252) [ 12.563477][ T1] ? rest_init (init/main.c:1459) [ 12.563839][ T1] kernel_init (init/main.c:1483) [ 12.564187][ T1] ret_from_fork (arch/x86/kernel/process.c:153) [ 12.564550][ T1] ? rest_init (init/main.c:1459) [ 12.564897][ T1] ret_from_fork_asm (arch/x86/entry/entry_64.S:254) [ 12.565276][ T1] [ 12.565526][ T1] irq event stamp: 789373 [ 12.565883][ T1] hardirqs last enabled at (789381): console_unlock (arch/x86/include/asm/irqflags.h:19 arch/x86/include/asm/irqflags.h:67 arch/x86/include/asm/irqflags.h:127 kernel/printk/printk.c:341 kernel/printk/printk.c:2746 kernel/printk/printk.c:3065) [ 12.566712][ T1] hardirqs last disabled at (789390): console_unlock (kernel/printk/printk.c:339) [ 12.567498][ T1] softirqs last enabled at (789142): __irq_exit_rcu (include/linux/sched.h:2189 kernel/softirq.c:620 kernel/softirq.c:639) [ 12.568260][ T1] softirqs last disabled at (789131): __irq_exit_rcu (include/linux/sched.h:2189 kernel/softirq.c:620 kernel/softirq.c:639) [ 12.569027][ T1] ---[ end trace 0000000000000000 ]--- The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20240705/202407051002.96bf438-oliver.sang@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki