FAT-fs (loop5): Filesystem has been set read-only
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kernel BUG at fs/buffer.c:605!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 15720 Comm: syz-executor.2 Not tainted 4.14.114 #4
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880629b8080 task.stack: ffff888047f48000
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:ffff888047f4f678 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffff8880955a1540 RCX: ffffc90006036000
RDX: 0000000000040000 RSI: ffffffff8199673a RDI: ffff8880955b5ef8
RBP: ffff888047f4f6b0 R08: ffff8880629b8080 R09: 0000000000000004
R10: 0000000000000000 R11: ffff8880629b8080 R12: ffff8880955b5d98
R13: 0000000000000000 R14: ffff8880a77d3a60 R15: 000000000000296b
FS:  00007fc228a0a700(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f14d1f7fdb8 CR3: 0000000094ed4000 CR4: 00000000001406e0
Call Trace:
 fat16_ent_put+0xc5/0x100 fs/fat/fatent.c:181
 fat_free_clusters+0x36f/0x810 fs/fat/fatent.c:593
 fat_free fs/fat/file.c:346 [inline]
 fat_truncate_blocks+0x693/0xae0 fs/fat/file.c:364
 fat_setattr+0x6c1/0xae0 fs/fat/file.c:508
 notify_change+0x8d4/0xd10 fs/attr.c:313
 do_truncate+0x124/0x1c0 fs/open.c:63
 handle_truncate fs/namei.c:3009 [inline]
 do_last fs/namei.c:3434 [inline]
 path_openat+0x2788/0x3f70 fs/namei.c:3566
 do_filp_open+0x18e/0x250 fs/namei.c:3600
 do_sys_open+0x2c5/0x430 fs/open.c:1065
 SYSC_open fs/open.c:1083 [inline]
 SyS_open fs/open.c:1078 [inline]
 SYSC_creat fs/open.c:1123 [inline]
 SyS_creat+0x27/0x30 fs/open.c:1121
 do_syscall_64+0x1eb/0x630 arch/x86/entry/common.c:289
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x458da9
RSP: 002b:00007fc228a09c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000458da9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080
RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc228a0a6d4
R13: 00000000004bf304 R14: 00000000004d0488 R15: 00000000ffffffff
Code: fa 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 75 4d 4c 89 63 58 4c 89 ef e8 10 a8 81 04 e9 13 fe ff ff e8 76 81 c3 ff <0f> 0b 4c 89 ff e8 dc 26 ed ff e9 f8 fd ff ff e8 d2 26 ed ff e9 
RIP: mark_buffer_dirty_inode fs/buffer.c:605 [inline] RSP: ffff888047f4f678
RIP: mark_buffer_dirty_inode+0x2ea/0x3e0 fs/buffer.c:596 RSP: ffff888047f4f678
---[ end trace 78a23c2502436bfc ]---
kobject: 'loop4' (ffff8880a4a86ae0): kobject_uevent_env
kobject: 'loop4' (ffff8880a4a86ae0): fill_kobj_path: path = '/devices/virtual/block/loop4'