divide error: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 314 Comm: syz-executor.5 Not tainted 5.4.147-syzkaller-00040-g2138e7367558 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:get_scan_count+0x42d/0x1490 mm/vmscan.c:2515 Code: 49 be 00 00 00 00 00 fc ff df 4c 89 e7 48 89 de e8 a8 ae e0 ff 49 39 dc 4c 0f 46 e3 48 8b 4c 24 20 48 0f af d9 48 89 d8 31 d2 <49> f7 f4 49 89 cc 49 29 c4 bf 20 00 00 00 4c 89 e6 e8 ad b0 e0 ff RSP: 0000:ffff8881ad3573a0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff8881ad3574b0 R08: ffffffff818022b8 R09: ffffed103d677424 R10: ffffed103d677424 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8881ad357748 R14: dffffc0000000000 R15: 000000000000000f FS: 0000555557221400(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0daba0bd80 CR3: 00000001ad340000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: shrink_node_memcg+0x158/0x1000 mm/vmscan.c:2588 shrink_node+0x37a/0x12c0 mm/vmscan.c:2831 shrink_zones+0x406/0x8b0 mm/vmscan.c:3048 do_try_to_free_pages+0x20b/0x980 mm/vmscan.c:3106 try_to_free_pages+0x548/0xce0 mm/vmscan.c:3320 __perform_reclaim mm/page_alloc.c:4223 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:4244 [inline] __alloc_pages_slowpath+0xfec/0x1b70 mm/page_alloc.c:4661 __alloc_pages_nodemask+0x42a/0x740 mm/page_alloc.c:4875 __alloc_pages include/linux/gfp.h:503 [inline] __alloc_pages_node include/linux/gfp.h:516 [inline] alloc_pages_node include/linux/gfp.h:530 [inline] __page_cache_alloc include/linux/pagemap.h:218 [inline] pagecache_get_page+0x538/0x8c0 mm/filemap.c:1690 filemap_fault+0x1570/0x1930 mm/filemap.c:2529 ext4_filemap_fault+0x7b/0x90 fs/ext4/inode.c:6416 __do_fault mm/memory.c:3237 [inline] do_read_fault mm/memory.c:3637 [inline] do_fault mm/memory.c:3766 [inline] handle_pte_fault mm/memory.c:3997 [inline] __handle_mm_fault mm/memory.c:4121 [inline] handle_mm_fault+0x2721/0x3f30 mm/memory.c:4158 do_user_addr_fault+0x4a0/0xb40 arch/x86/mm/fault.c:1469 page_fault+0x2f/0x40 arch/x86/entry/entry_64.S:1203 RIP: 0033:0x7fb72e9dad1a Code: Bad RIP value. RSP: 002b:00007ffd6df31af0 EFLAGS: 00010206 RAX: 0000000000000005 RBX: 0000000000000000 RCX: 0000000000000440 RDX: 0000000000000020 RSI: 00007ffd6df32008 RDI: 00007ffd6df33440 RBP: 00007ffd6df32040 R08: 00000000ffffffff R09: 0000000000000000 R10: 00007ffd6df33440 R11: 0000000000000000 R12: 00007ffd6df32060 R13: 00007fb72ea750dc R14: 00007ffd6df321e0 R15: 0000000000000073 Modules linked in: ---[ end trace 51c96466c2d3c2a9 ]--- RIP: 0010:get_scan_count+0x42d/0x1490 mm/vmscan.c:2515 Code: 49 be 00 00 00 00 00 fc ff df 4c 89 e7 48 89 de e8 a8 ae e0 ff 49 39 dc 4c 0f 46 e3 48 8b 4c 24 20 48 0f af d9 48 89 d8 31 d2 <49> f7 f4 49 89 cc 49 29 c4 bf 20 00 00 00 4c 89 e6 e8 ad b0 e0 ff RSP: 0000:ffff8881ad3573a0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff8881ad3574b0 R08: ffffffff818022b8 R09: ffffed103d677424 R10: ffffed103d677424 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8881ad357748 R14: dffffc0000000000 R15: 000000000000000f FS: 0000555557221400(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd1c65d7abf CR3: 00000001ad340000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 49 be 00 00 00 00 00 movabs $0xdffffc0000000000,%r14 7: fc ff df a: 4c 89 e7 mov %r12,%rdi d: 48 89 de mov %rbx,%rsi 10: e8 a8 ae e0 ff callq 0xffe0aebd 15: 49 39 dc cmp %rbx,%r12 18: 4c 0f 46 e3 cmovbe %rbx,%r12 1c: 48 8b 4c 24 20 mov 0x20(%rsp),%rcx 21: 48 0f af d9 imul %rcx,%rbx 25: 48 89 d8 mov %rbx,%rax 28: 31 d2 xor %edx,%edx * 2a: 49 f7 f4 div %r12 <-- trapping instruction 2d: 49 89 cc mov %rcx,%r12 30: 49 29 c4 sub %rax,%r12 33: bf 20 00 00 00 mov $0x20,%edi 38: 4c 89 e6 mov %r12,%rsi 3b: e8 ad b0 e0 ff callq 0xffe0b0ed