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kernel BUG at fs/buffer.c:605!
loop_reread_partitions: partition scan of loop0 (p
àõ|Œö'$äé`Bªå‡TÁÕœÈt) failed (rc=-16)
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 11994 Comm: syz-executor.0 Not tainted 4.14.160-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff888097268580 task.stack: ffff88805bee0000
RIP: 0010:mark_buffer_dirty_inode fs/buffer.c:605 [inline]
RIP: 0010:mark_buffer_dirty_inode+0x2ea/0x3e0 fs/buffer.c:596
RSP: 0018:ffff88805bee73f0 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffff88804ae91540 RCX: ffffc90008628000
RDX: 0000000000040000 RSI: ffffffff819bab3a RDI: ffff88803d9b99b8
RBP: ffff88805bee7428 R08: ffff888097268580 R09: 0000000000000004
print_req_error: I/O error, dev loop0, sector 0
R10: 0000000000000000 R11: ffff888097268580 R12: ffff88803d9b9858
R13: 0000000000000000 R14: ffff888099e18ae0 R15: ffff88805bee76a8
FS:  00007fa97b1b3700(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ff21000 CR3: 0000000059ac3000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 fat16_ent_put+0xc5/0x100 fs/fat/fatent.c:181
print_req_error: I/O error, dev loop0, sector 0
 fat_alloc_clusters+0x5a4/0xdb0 fs/fat/fatent.c:502
Buffer I/O error on dev loop0, logical block 0, async page read
print_req_error: I/O error, dev loop0, sector 0
 fat_add_cluster+0x60/0xc0 fs/fat/inode.c:100
 __fat_get_block fs/fat/inode.c:147 [inline]
 fat_get_block+0x2d4/0x7e0 fs/fat/inode.c:176
Buffer I/O error on dev loop0, logical block 0, async page read
print_req_error: I/O error, dev loop0, sector 0
 __block_write_begin_int+0x396/0x1100 fs/buffer.c:2027
Buffer I/O error on dev loop0, logical block 0, async page read
print_req_error: I/O error, dev loop0, sector 0
 __block_write_begin fs/buffer.c:2077 [inline]
 block_write_begin+0x5f/0x280 fs/buffer.c:2136
 cont_write_begin+0x430/0x770 fs/buffer.c:2486
Buffer I/O error on dev loop0, logical block 0, async page read
print_req_error: I/O error, dev loop0, sector 0
 fat_write_begin+0x8d/0x120 fs/fat/inode.c:222
 generic_perform_write+0x1f8/0x480 mm/filemap.c:3047
Buffer I/O error on dev loop0, logical block 0, async page read
 __generic_file_write_iter+0x239/0x5b0 mm/filemap.c:3172
 generic_file_write_iter+0x303/0x660 mm/filemap.c:3200
print_req_error: I/O error, dev loop0, sector 0
 call_write_iter include/linux/fs.h:1777 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x4a7/0x6b0 fs/read_write.c:482
Buffer I/O error on dev loop0, logical block 0, async page read
print_req_error: I/O error, dev loop0, sector 0
Buffer I/O error on dev loop0, logical block 0, async page read
 vfs_write+0x198/0x500 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xfd/0x230 fs/read_write.c:582
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
print_req_error: I/O error, dev loop0, sector 0
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45a919
RSP: 002b:00007fa97b1b2c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a919
RDX: 000000010000005c RSI: 00000000200015c0 RDI: 0000000000000004
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa97b1b36d4
R13: 00000000004cbd0a R14: 00000000004e5aa0 R15: 00000000ffffffff
Code: 
Buffer I/O error on dev loop0, logical block 0, async page read
fa 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 
print_req_error: I/O error, dev loop0, sector 0
02 00 75 4d 4c 89 63 58 4c 89 ef e8 00 65 c9 04 e9 13 fe ff ff e8 36 a4 c1 ff <0f> 0b 4c 89 ff e8 ac 31 ec ff e9 f8 fd ff ff e8 a2 31 ec ff e9 
RIP: mark_buffer_dirty_inode fs/buffer.c:605 [inline] RSP: ffff88805bee73f0
RIP: mark_buffer_dirty_inode+0x2ea/0x3e0 fs/buffer.c:596 RSP: ffff88805bee73f0
kobject: 'loop1' (ffff8880a403f520): kobject_uevent_env
Buffer I/O error on dev loop0, logical block 0, async page read
kobject: 'loop1' (ffff8880a403f520): fill_kobj_path: path = '/devices/virtual/block/loop1'
SELinux:  unknown common 
---[ end trace 0acc2b7a6781f403 ]---
Buffer I/O error on dev loop0, logical block 0, async page read
kobject: 'loop2' (ffff8880a40c6460): kobject_uevent_env