divide error: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 12972 Comm: syz-executor.1 Not tainted 5.14.0-rc3-next-20210729-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:wb_update_dirty_ratelimit+0x18d/0x7d0 mm/page-writeback.c:1197 Code: 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 af 05 00 00 4c 2b b5 30 02 00 00 49 8d 7f 58 31 d2 49 6b c6 64 <48> f7 f3 48 89 fa 48 89 04 24 48 b8 00 00 00 00 00 fc ff df 48 c1 RSP: 0018:ffffc9000a3b7750 EFLAGS: 00010206 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc9000abf3000 RDX: 0000000000000000 RSI: 0000000000006378 RDI: ffffc9000a3b79a0 RBP: ffff888034168060 R08: 0000000000000000 R09: ffffffff9023b323 R10: fffffbfff2047664 R11: 0000000000000000 R12: 0000000000006400 R13: 000000000004046b R14: 0000000000000000 R15: ffffc9000a3b7948 FS: 00007f787cb51700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000002269848 CR3: 0000000075bd1000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __wb_update_bandwidth+0x3d7/0x5a0 mm/page-writeback.c:1350 balance_dirty_pages+0x12ab/0x29d0 mm/page-writeback.c:1719 balance_dirty_pages_ratelimited+0xda2/0x1820 mm/page-writeback.c:1920 generic_perform_write+0x320/0x510 mm/filemap.c:3789 __generic_file_write_iter+0x24e/0x610 mm/filemap.c:3882 generic_file_write_iter+0xd7/0x220 mm/filemap.c:3914 fuse_cache_write_iter fs/fuse/file.c:1298 [inline] fuse_file_write_iter+0x56c/0xcd0 fs/fuse/file.c:1601 call_write_iter include/linux/fs.h:2152 [inline] new_sync_write+0x426/0x650 fs/read_write.c:518 vfs_write+0x75a/0xa40 fs/read_write.c:605 ksys_write+0x12d/0x250 fs/read_write.c:658 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665e9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f787cb51188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 00000000fffffdef RSI: 00000000200000c0 RDI: 0000000000000005 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffff13d452f R14: 00007f787cb51300 R15: 0000000000022000 Modules linked in: ---[ end trace 0a9d0aae18f838fd ]--- RIP: 0010:wb_update_dirty_ratelimit+0x18d/0x7d0 mm/page-writeback.c:1197 Code: 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 af 05 00 00 4c 2b b5 30 02 00 00 49 8d 7f 58 31 d2 49 6b c6 64 <48> f7 f3 48 89 fa 48 89 04 24 48 b8 00 00 00 00 00 fc ff df 48 c1 RSP: 0018:ffffc9000a3b7750 EFLAGS: 00010206 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc9000abf3000 RDX: 0000000000000000 RSI: 0000000000006378 RDI: ffffc9000a3b79a0 RBP: ffff888034168060 R08: 0000000000000000 R09: ffffffff9023b323 R10: fffffbfff2047664 R11: 0000000000000000 R12: 0000000000006400 R13: 000000000004046b R14: 0000000000000000 R15: ffffc9000a3b7948 FS: 00007f787cb51700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000002269848 CR3: 0000000075bd1000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400