[ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.53' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 56.348405][ C1] hrtimer: interrupt took 45791 ns executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 56.808676][ T6945] page:000000000a43e4f5 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x9da96 [ 56.844569][ T6951] page:000000008295a4e5 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x8fef6 executing program executing program executing program [ 56.889227][ T6945] flags: 0xfffe0000000000() [ 56.903758][ T6951] flags: 0xfffe0000000000() [ 56.919253][ T6945] raw: 00fffe0000000000 dead000000000100 ffffea000251cf80 0000000000000000 executing program executing program [ 56.940622][ T6951] raw: 00fffe0000000000 dead000000000100 ffffea000299ff40 0000000000000000 [ 56.979879][ T6945] raw: 0000000000000000 ffff888096b02900 00000001ffffffff 0000000000000000 executing program executing program executing program [ 56.986907][ T6951] raw: 0000000000000000 ffff888096b02ae0 00000001ffffffff 0000000000000000 [ 57.012234][ T6951] page dumped because: VM_BUG_ON_PAGE(page->pmd_huge_pte) [ 57.035497][ T6951] ------------[ cut here ]------------ executing program [ 57.043730][ T6945] page dumped because: VM_BUG_ON_PAGE(page->pmd_huge_pte) [ 57.052771][ T6951] kernel BUG at include/linux/mm.h:2260! [ 57.070992][ T6951] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 57.077090][ T6951] CPU: 1 PID: 6951 Comm: syz-executor101 Not tainted 5.9.0-rc6-syzkaller #0 [ 57.082297][ T6945] ------------[ cut here ]------------ [ 57.085747][ T6951] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.085766][ T6951] RIP: 0010:___pmd_free_tlb+0x108/0x140 [ 57.085787][ T6951] Code: ee e8 5c 8e fe ff 66 90 5b 5d 41 5c 41 5d c3 e8 de 95 40 00 0f 0b e8 d7 95 40 00 48 c7 c6 40 20 89 88 48 89 ef e8 a8 90 6f 00 <0f> 0b e8 c1 95 40 00 0f 0b 48 c7 c7 68 6c fc 89 e8 23 69 81 00 e9 [ 57.091286][ T6945] kernel BUG at include/linux/mm.h:2260! [ 57.101250][ T6951] RSP: 0018:ffffc900061678c0 EFLAGS: 00010286 [ 57.101259][ T6951] RAX: 0000000000000000 RBX: 000000000008fef6 RCX: ffffffff81a54935 [ 57.101266][ T6951] RDX: ffff88808e70a1c0 RSI: ffffffff81a54984 RDI: ffffea00023fbdb8 [ 57.101272][ T6951] RBP: ffffea00023fbd80 R08: 0000000000000037 R09: ffff8880ae5318e7 [ 57.101278][ T6951] R10: ffffffffffffffff R11: 0000000000000000 R12: ffffc90006167a20 [ 57.101286][ T6951] R13: ffff88808fef6000 R14: 0000000021000fff R15: 0000000000000000 [ 57.101296][ T6951] FS: 0000000000000000(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000 [ 57.101303][ T6951] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 57.101309][ T6951] CR2: 00000000080fd718 CR3: 000000008e534000 CR4: 00000000001506e0 [ 57.101318][ T6951] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 57.101325][ T6951] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 57.101328][ T6951] Call Trace: [ 57.101345][ T6951] free_pgd_range+0xa3f/0xf90 [ 57.101363][ T6951] free_pgtables+0x230/0x2f0 [ 57.229676][ T6951] exit_mmap+0x2c0/0x530 [ 57.233894][ T6951] ? __ia32_sys_remap_file_pages+0x150/0x150 [ 57.239950][ T6951] ? kmem_cache_free.part.0+0x1b0/0x1e0 [ 57.245471][ T6951] ? __khugepaged_exit+0x2d9/0x3f0 [ 57.250553][ T6951] __mmput+0x122/0x470 [ 57.254594][ T6951] mmput+0x53/0x60 [ 57.258297][ T6951] do_exit+0xa8b/0x29f0 [ 57.262435][ T6951] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 57.268555][ T6951] ? mm_update_next_owner+0x7a0/0x7a0 [ 57.273910][ T6951] ? lockdep_hardirqs_on+0x53/0x100 [ 57.279089][ T6951] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 57.285222][ T6951] do_group_exit+0x125/0x310 [ 57.289871][ T6951] get_signal+0x428/0x1f00 [ 57.294269][ T6951] ? futex_exit_release+0x220/0x220 [ 57.299450][ T6951] ? enqueue_hrtimer+0x152/0x3f0 [ 57.304360][ T6951] ? find_held_lock+0x2d/0x110 [ 57.309105][ T6951] arch_do_signal+0x82/0x2520 [ 57.313754][ T6951] ? read_seqcount_t_begin.constprop.0+0xd2/0x1e0 [ 57.320147][ T6951] ? read_seqcount_t_begin.constprop.0+0x133/0x1e0 [ 57.326630][ T6951] ? ktime_get+0xd8/0x120 [ 57.330948][ T6951] ? native_apic_msr_write+0x54/0x80 [ 57.336227][ T6951] ? copy_siginfo_to_user32+0xa0/0xa0 [ 57.341594][ T6951] ? clockevents_program_event+0x12b/0x350 [ 57.347405][ T6951] ? __ia32_sys_futex_time32+0x302/0x455 [ 57.353147][ T6951] ? __ia32_sys_futex_time32+0x30b/0x455 [ 57.358774][ T6951] ? exit_to_user_mode_prepare+0xb9/0x200 [ 57.364476][ T6951] ? check_preemption_disabled+0x50/0x130 [ 57.370168][ T6951] exit_to_user_mode_prepare+0x1ae/0x200 [ 57.375781][ T6951] syscall_exit_to_user_mode+0x7e/0x2e0 [ 57.381295][ T6951] __do_fast_syscall_32+0x6c/0x90 [ 57.386363][ T6951] do_fast_syscall_32+0x2f/0x70 [ 57.391203][ T6951] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 57.397512][ T6951] RIP: 0023:0xf7f80549 [ 57.401589][ T6951] Code: Bad RIP value. [ 57.405627][ T6951] RSP: 002b:00000000f7f7b1ec EFLAGS: 00000296 ORIG_RAX: 00000000000000f0 [ 57.414009][ T6951] RAX: fffffffffffffe00 RBX: 00000000080fafe8 RCX: 0000000000000080 [ 57.421952][ T6951] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 57.429980][ T6951] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 57.437920][ T6951] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 57.445925][ T6951] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 57.453912][ T6951] Modules linked in: [ 57.457830][ T6945] invalid opcode: 0000 [#2] PREEMPT SMP KASAN [ 57.463907][ T6945] CPU: 0 PID: 6945 Comm: syz-executor101 Tainted: G D 5.9.0-rc6-syzkaller #0 [ 57.473962][ T6945] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.481505][ T6951] ---[ end trace f578be228b447c1d ]--- [ 57.484034][ T6945] RIP: 0010:___pmd_free_tlb+0x108/0x140 [ 57.484056][ T6945] Code: ee e8 5c 8e fe ff 66 90 5b 5d 41 5c 41 5d c3 e8 de 95 40 00 0f 0b e8 d7 95 40 00 48 c7 c6 40 20 89 88 48 89 ef e8 a8 90 6f 00 <0f> 0b e8 c1 95 40 00 0f 0b 48 c7 c7 68 6c fc 89 e8 23 69 81 00 e9 [ 57.489616][ T6951] RIP: 0010:___pmd_free_tlb+0x108/0x140 [ 57.495122][ T6945] RSP: 0018:ffffc900061a78c0 EFLAGS: 00010286 [ 57.495132][ T6945] RAX: 0000000000000000 RBX: 000000000009da96 RCX: ffffffff81a54935 [ 57.495140][ T6945] RDX: ffff88808f27e080 RSI: ffffffff81a54984 RDI: ffffea000276a5b8 [ 57.495146][ T6945] RBP: ffffea000276a580 R08: 0000000000000037 R09: ffff8880ae4318e7 [ 57.495152][ T6945] R10: ffffffffffffffff R11: 0000000000000000 R12: ffffc900061a7a20 [ 57.495159][ T6945] R13: ffff88809da96000 R14: 0000000021000fff R15: 0000000000000000 [ 57.495168][ T6945] FS: 0000000000000000(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000 [ 57.495175][ T6945] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 57.495182][ T6945] CR2: 000000002001d06c CR3: 00000000a95fb000 CR4: 00000000001506f0 executing program executing program executing program executing program [ 57.495197][ T6945] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 57.495204][ T6945] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 57.495207][ T6945] Call Trace: [ 57.495223][ T6945] free_pgd_range+0xa3f/0xf90 [ 57.495243][ T6945] free_pgtables+0x230/0x2f0 [ 57.521697][ T6951] Code: ee e8 5c 8e fe ff 66 90 5b 5d 41 5c 41 5d c3 e8 de 95 40 00 0f 0b e8 d7 95 40 00 48 c7 c6 40 20 89 88 48 89 ef e8 a8 90 6f 00 <0f> 0b e8 c1 95 40 00 0f 0b 48 c7 c7 68 6c fc 89 e8 23 69 81 00 e9 [ 57.526675][ T6945] exit_mmap+0x2c0/0x530 executing program executing program executing program executing program [ 57.526689][ T6945] ? __ia32_sys_remap_file_pages+0x150/0x150 [ 57.526705][ T6945] ? kmem_cache_free.part.0+0x1b0/0x1e0 [ 57.526727][ T6945] ? __khugepaged_exit+0x2d9/0x3f0 [ 57.536571][ T6951] RSP: 0018:ffffc900061678c0 EFLAGS: 00010286 [ 57.542817][ T6945] __mmput+0x122/0x470 [ 57.542830][ T6945] mmput+0x53/0x60 [ 57.542840][ T6945] do_exit+0xa8b/0x29f0 [ 57.542855][ T6945] ? lock_is_held_type+0xbb/0xf0 [ 57.542868][ T6945] ? find_held_lock+0x2d/0x110 [ 57.542888][ T6945] ? mm_update_next_owner+0x7a0/0x7a0 executing program executing program executing program [ 57.553747][ T6951] RAX: 0000000000000000 RBX: 000000000008fef6 RCX: ffffffff81a54935 [ 57.558804][ T6945] ? get_signal+0x34f/0x1f00 [ 57.558819][ T6945] ? lock_downgrade+0x830/0x830 [ 57.558841][ T6945] ? lock_is_held_type+0xbb/0xf0 [ 57.570808][ T6951] RDX: ffff88808e70a1c0 RSI: ffffffff81a54984 RDI: ffffea00023fbdb8 [ 57.575826][ T6945] do_group_exit+0x125/0x310 [ 57.575841][ T6945] get_signal+0x428/0x1f00 [ 57.575853][ T6945] ? futex_exit_release+0x220/0x220 [ 57.575866][ T6945] ? enqueue_hrtimer+0x152/0x3f0 executing program executing program executing program [ 57.575879][ T6945] ? find_held_lock+0x2d/0x110 [ 57.575892][ T6945] arch_do_signal+0x82/0x2520 [ 57.575905][ T6945] ? read_seqcount_t_begin.constprop.0+0xd2/0x1e0 [ 57.575917][ T6945] ? read_seqcount_t_begin.constprop.0+0x133/0x1e0 [ 57.575928][ T6945] ? ktime_get+0xd8/0x120 [ 57.575942][ T6945] ? native_apic_msr_write+0x54/0x80 [ 57.575952][ T6945] ? copy_siginfo_to_user32+0xa0/0xa0 [ 57.575972][ T6945] ? clockevents_program_event+0x12b/0x350 [ 57.586917][ T6951] RBP: ffffea00023fbd80 R08: 0000000000000037 R09: ffff8880ae5318e7 [ 57.590520][ T6945] ? __ia32_sys_futex_time32+0x302/0x455 [ 57.590532][ T6945] ? __ia32_sys_futex_time32+0x30b/0x455 [ 57.590549][ T6945] ? exit_to_user_mode_prepare+0xb9/0x200 [ 57.590569][ T6945] ? check_preemption_disabled+0x50/0x130 [ 57.600560][ T6951] R10: ffffffffffffffff R11: 0000000000000000 R12: ffffc90006167a20 [ 57.606491][ T6945] exit_to_user_mode_prepare+0x1ae/0x200 [ 57.606506][ T6945] syscall_exit_to_user_mode+0x7e/0x2e0 [ 57.606519][ T6945] __do_fast_syscall_32+0x6c/0x90 [ 57.606531][ T6945] do_fast_syscall_32+0x2f/0x70 [ 57.606544][ T6945] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 57.606554][ T6945] RIP: 0023:0xf7f80549 [ 57.606558][ T6945] Code: Bad RIP value. [ 57.606563][ T6945] RSP: 002b:00000000f7f7b1ec EFLAGS: 00000296 ORIG_RAX: 00000000000000f0 [ 57.606575][ T6945] RAX: fffffffffffffe00 RBX: 00000000080fafe8 RCX: 0000000000000080 [ 57.606581][ T6945] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 57.606588][ T6945] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 57.606603][ T6945] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 57.615474][ T6951] R13: ffff88808fef6000 R14: 0000000021000fff R15: 0000000000000000 [ 57.619095][ T6945] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 57.619105][ T6945] Modules linked in: [ 57.646507][ T6945] ---[ end trace f578be228b447c1e ]--- [ 57.653071][ T6951] FS: 0000000000000000(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000 [ 57.660199][ T6945] RIP: 0010:___pmd_free_tlb+0x108/0x140 [ 57.669807][ T6951] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 57.689731][ T6945] Code: ee e8 5c 8e fe ff 66 90 5b 5d 41 5c 41 5d c3 e8 de 95 40 00 0f 0b e8 d7 95 40 00 48 c7 c6 40 20 89 88 48 89 ef e8 a8 90 6f 00 <0f> 0b e8 c1 95 40 00 0f 0b 48 c7 c7 68 6c fc 89 e8 23 69 81 00 e9 [ 57.702571][ T6951] CR2: 00000000f7f5a22c CR3: 0000000088483000 CR4: 00000000001506e0 [ 57.720772][ T6945] RSP: 0018:ffffc900061678c0 EFLAGS: 00010286 [ 57.735545][ T6951] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 57.741832][ T6945] RAX: 0000000000000000 RBX: 000000000008fef6 RCX: ffffffff81a54935 [ 57.751971][ T6951] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 57.763134][ T6945] RDX: ffff88808e70a1c0 RSI: ffffffff81a54984 RDI: ffffea00023fbdb8 [ 57.777708][ T6951] Kernel panic - not syncing: Fatal exception [ 57.784790][ T6945] RBP: ffffea00023fbd80 R08: 0000000000000037 R09: ffff8880ae5318e7 [ 57.789817][ T6951] Kernel Offset: disabled [ 58.033844][ T6951] Rebooting in 86400 seconds..