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kernel BUG at fs/buffer.c:3111!
loop_set_block_size: loop0 () has still dirty pages (nrpages=1)
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 18893 Comm: syz-executor.0 Not tainted 4.14.134 #30
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88804e3de100 task.stack: ffff888054b90000
RIP: 0010:submit_bh_wbc+0x5a0/0x720 fs/buffer.c:3111
RSP: 0018:ffff888054b97a38 EFLAGS: 00010212
RAX: 0000000000040000 RBX: ffff888095879f18 RCX: ffffc90006a3b000
RDX: 000000000000ef5c RSI: ffffffff81998780 RDI: 0000000000000001
RBP: ffff888054b97a80 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: ffff88804e3de100 R12: ffff888095879f18
R13: 0000000000000800 R14: 0000000000000000 R15: 0000000000000001
FS:  00007fd3cc54f700(0000) GS:ffff8880aee00000(0000) knlGS:0000000000000000
attempt to access beyond end of device
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6bb5266300 CR3: 000000008826a000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 submit_bh fs/buffer.c:3158 [inline]
 __sync_dirty_buffer fs/buffer.c:3244 [inline]
 __sync_dirty_buffer+0xcf/0x260 fs/buffer.c:3235
 sync_dirty_buffer+0x1b/0x20 fs/buffer.c:3257
 fat_set_state+0x1f5/0x2e0 fs/fat/inode.c:695
 fat_fill_super+0x1e90/0x3560 fs/fat/inode.c:1861
 vfat_fill_super+0x32/0x40 fs/fat/namei_vfat.c:1059
 mount_bdev+0x2be/0x370 fs/super.c:1134
 vfat_mount+0x35/0x40 fs/fat/namei_vfat.c:1066
 mount_fs+0x97/0x2a1 fs/super.c:1237
 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046
 vfs_kern_mount fs/namespace.c:1036 [inline]
 do_new_mount fs/namespace.c:2549 [inline]
 do_mount+0x417/0x27d0 fs/namespace.c:2879
 SYSC_mount fs/namespace.c:3095 [inline]
 SyS_mount+0xab/0x120 fs/namespace.c:3072
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c27a
RSP: 002b:00007fd3cc54ea88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fd3cc54eb40 RCX: 000000000045c27a
RDX: 00007fd3cc54eae0 RSI: 00000000200002c0 RDI: 00007fd3cc54eb00
RBP: 0000000000000001 R08: 00007fd3cc54eb40 R09: 00007fd3cc54eae0
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003
loop4: rw=2049, want=78, limit=64
R13: 00000000004c8910 R14: 00000000004df598 R15: 00000000ffffffff
Code: f0 80 63 01 f7 e9 3d fb ff ff 48 8d 43 20 48 89 45 d0 48 8d 43 10 48 89 45 c0 e9 34 fc ff ff e8 87 1f c3 ff 0f 0b e8 80 1f c3 ff <0f> 0b e8 79 1f c3 ff 0f 0b e8 72 1f c3 ff 0f 0b e8 6b 1f c3 ff 
RIP: submit_bh_wbc+0x5a0/0x720 fs/buffer.c:3111 RSP: ffff888054b97a38
---[ end trace 7a649d22ee71504e ]---
Buffer I/O error on dev loop4, logical block 77, lost async page write