BUG: unable to handle kernel paging request at ffffeafff8d70020 IP: [<ffffffff814f5937>] __read_once_size include/linux/compiler.h:243 [inline] IP: [<ffffffff814f5937>] compound_head include/linux/page-flags.h:143 [inline] IP: [<ffffffff814f5937>] PageAnon include/linux/page-flags.h:386 [inline] IP: [<ffffffff814f5937>] page_remove_rmap+0x37/0x6d0 mm/rmap.c:1429 PGD 0 [ 56.646526] Oops: 0000 [#1] PREEMPT SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 8684 Comm: syz-executor689 Not tainted 4.9.122-g54068d6 #78 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8801cdf4b000 task.stack: ffff8801cde58000 RIP: 0010:[<ffffffff814f5937>] [<ffffffff814f5937>] __read_once_size include/linux/compiler.h:243 [inline] RIP: 0010:[<ffffffff814f5937>] [<ffffffff814f5937>] compound_head include/linux/page-flags.h:143 [inline] RIP: 0010:[<ffffffff814f5937>] [<ffffffff814f5937>] PageAnon include/linux/page-flags.h:386 [inline] RIP: 0010:[<ffffffff814f5937>] [<ffffffff814f5937>] page_remove_rmap+0x37/0x6d0 mm/rmap.c:1429 RSP: 0018:ffff8801cde5f6c0 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffffeafff8d70000 RCX: 0000000000000000 RDX: 1ffffd5fff1ae004 RSI: ffffffff814f5918 RDI: ffffeafff8d70000 RBP: ffff8801cde5f6e8 R08: 00000000000369e0 R09: 0000000000000001 R10: ffff8801cdf4b000 R11: 0000000000000001 R12: ffff8801cde5f980 R13: ffffeafff8d70020 R14: ffffeafff8d70000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffeafff8d70020 CR3: 00000001cf998000 CR4: 00000000001606f0 Stack: ffffeafff8d70020 ffff8801cde5f980 ffff8801cff2f800 ffffeafff8d70000 ffff8801ce2a68f0 ffff8801cde5f740 ffffffff8154cb8f ffff8801cde5f990 ffff8801cde5f988 ffff8801cde5fa00 00003ffe35c001e0 00000001cff2f000 Call Trace: [<ffffffff8154cb8f>] zap_huge_pmd+0x16f/0x860 mm/huge_memory.c:1428 [<ffffffff814cae6d>] zap_pmd_range mm/memory.c:1245 [inline] [<ffffffff814cae6d>] zap_pud_range mm/memory.c:1279 [inline] [<ffffffff814cae6d>] unmap_page_range+0x12ad/0x1730 mm/memory.c:1300 [<ffffffff814cb3f1>] unmap_single_vma+0x101/0x260 mm/memory.c:1345 [<ffffffff814cbd32>] unmap_vmas+0x102/0x1d0 mm/memory.c:1375 [<ffffffff814e4834>] exit_mmap+0x214/0x3f0 mm/mmap.c:3020 [<ffffffff8112db23>] __mmput kernel/fork.c:884 [inline] [<ffffffff8112db23>] mmput+0xf3/0x2d0 kernel/fork.c:906 [<ffffffff81143056>] exit_mm kernel/exit.c:514 [inline] [<ffffffff81143056>] do_exit+0x906/0x27b0 kernel/exit.c:820 [<ffffffff81149211>] do_group_exit+0x111/0x340 kernel/exit.c:937 [<ffffffff8116c08f>] get_signal+0x4cf/0x1450 kernel/signal.c:2321 [<ffffffff81052637>] do_signal+0x87/0x19f0 arch/x86/kernel/signal.c:807 [<ffffffff81005581>] exit_to_usermode_loop+0xe1/0x120 arch/x86/entry/common.c:157 [<ffffffff810064d4>] prepare_exit_to_usermode arch/x86/entry/common.c:191 [inline] [<ffffffff810064d4>] syscall_return_slowpath arch/x86/entry/common.c:260 [inline] [<ffffffff810064d4>] do_syscall_64+0x364/0x490 arch/x86/entry/common.c:287 [<ffffffff83a00cd3>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Code: 55 41 54 53 48 89 fb e8 58 b4 e6 ff 4c 8d 6b 20 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 b8 05 00 00 <4c> 8b 73 20 49 89 dc 41 f6 c6 01 0f 85 4b 03 00 00 e8 23 b4 e6 RIP [<ffffffff814f5937>] __read_once_size include/linux/compiler.h:243 [inline] RIP [<ffffffff814f5937>] compound_head include/linux/page-flags.h:143 [inline] RIP [<ffffffff814f5937>] PageAnon include/linux/page-flags.h:386 [inline] RIP [<ffffffff814f5937>] page_remove_rmap+0x37/0x6d0 mm/rmap.c:1429 RSP <ffff8801cde5f6c0> CR2: ffffeafff8d70020 ---[ end trace 354a20bf8f9b7c63 ]--- BUG: unable to handle kernel paging request at ffffeafff8ea0020 IP: [<ffffffff814f5937>] __read_once_size include/linux/compiler.h:243 [inline] IP: [<ffffffff814f5937>] compound_head include/linux/page-flags.h:143 [inline] IP: [<ffffffff814f5937>] PageAnon include/linux/page-flags.h:386 [inline] IP: [<ffffffff814f5937>] page_remove_rmap+0x37/0x6d0 mm/rmap.c:1429 PGD 0 Oops: 0000 [#2] PREEMPT SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 1 PID: 8760 Comm: syz-executor689 Tainted: G D 4.9.122-g54068d6 #78 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8801d4886000 task.stack: ffff8801cda08000 RIP: 0010:[<ffffffff814f5937>] [<ffffffff814f5937>] __read_once_size include/linux/compiler.h:243 [inline] RIP: 0010:[<ffffffff814f5937>] [<ffffffff814f5937>] compound_head include/linux/page-flags.h:143 [inline] RIP: 0010:[<ffffffff814f5937>] [<ffffffff814f5937>] PageAnon include/linux/page-flags.h:386 [inline] RIP: 0010:[<ffffffff814f5937>] [<ffffffff814f5937>] page_remove_rmap+0x37/0x6d0 mm/rmap.c:1429 RSP: 0018:ffff8801cda0f6c0 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffffeafff8ea0000 RCX: 0000000000000000 RDX: 1ffffd5fff1d4004 RSI: ffffffff814f5918 RDI: ffffeafff8ea0000 RBP: ffff8801cda0f6e8 R08: 0000000000000001 R09: 0000000000000000 R10: ffff8801d4886000 R11: 0000000000000000 R12: ffff8801cda0f980 R13: ffffeafff8ea0020 R14: ffffeafff8ea0000 R15: 0000000000000001 FS: 00007f9aad630700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffeafff8ea0020 CR3: 00000001c31a2000 CR4: 00000000001606f0 Stack: ffffeafff8ea0020 ffff8801cda0f980 ffff8801cfefa800 ffffeafff8ea0000 ffff8801cef75318 ffff8801cda0f740 ffffffff8154cb8f ffff8801cda0f990 ffff8801cda0f988 ffff8801cda0fa00 00003ffe3a8001e0 00000001cfefa000 Call Trace: [<ffffffff8154cb8f>] zap_huge_pmd+0x16f/0x860 mm/huge_memory.c:1428 [<ffffffff814cae6d>] zap_pmd_range mm/memory.c:1245 [inline] [<ffffffff814cae6d>] zap_pud_range mm/memory.c:1279 [inline] [<ffffffff814cae6d>] unmap_page_range+0x12ad/0x1730 mm/memory.c:1300 [<ffffffff814cb3f1>] unmap_single_vma+0x101/0x260 mm/memory.c:1345 [<ffffffff814cbd32>] unmap_vmas+0x102/0x1d0 mm/memory.c:1375 [<ffffffff814e4834>] exit_mmap+0x214/0x3f0 mm/mmap.c:3020 [<ffffffff8112db23>] __mmput kernel/fork.c:884 [inline] [<ffffffff8112db23>] mmput+0xf3/0x2d0 kernel/fork.c:906 [<ffffffff81143056>] exit_mm kernel/exit.c:514 [inline] [<ffffffff81143056>] do_exit+0x906/0x27b0 kernel/exit.c:820 [<ffffffff81149211>] do_group_exit+0x111/0x340 kernel/exit.c:937 [<ffffffff8116c08f>] get_signal+0x4cf/0x1450 kernel/signal.c:2321 [<ffffffff81052637>] do_signal+0x87/0x19f0 arch/x86/kernel/signal.c:807 [<ffffffff81005581>] exit_to_usermode_loop+0xe1/0x120 arch/x86/entry/common.c:157 [<ffffffff810064d4>] prepare_exit_to_usermode arch/x86/entry/common.c:191 [inline] [<ffffffff810064d4>] syscall_return_slowpath arch/x86/entry/common.c:260 [inline] [<ffffffff810064d4>] do_syscall_64+0x364/0x490 arch/x86/entry/common.c:287 [<ffffffff83a00cd3>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Code: 55 41 54 53 48 89 fb e8 58 b4 e6 ff 4c 8d 6b 20 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 b8 05 00 00 <4c> 8b 73 20 49 89 dc 41 f6 c6 01 0f 85 4b 03 00 00 e8 23 b4 e6 RIP [<ffffffff814f5937>] __read_once_size include/linux/compiler.h:243 [inline] RIP [<ffffffff814f5937>] compound_head include/linux/page-flags.h:143 [inline] RIP [<ffffffff814f5937>] PageAnon include/linux/page-flags.h:386 [inline] RIP [<ffffffff814f5937>] page_remove_rmap+0x37/0x6d0 mm/rmap.c:1429 RSP <ffff8801cda0f6c0> CR2: ffffeafff8ea0020 ---[ end trace 354a20bf8f9b7c64 ]---