loop0: p1 < > p2 p3 < p5 p6 > p4
loop0: partition table partially beyond EOD, truncated
------------[ cut here ]------------
loop0: p1 start 1 is beyond EOD, 
kernel BUG at fs/buffer.c:605!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
truncated
Modules linked in:
CPU: 0 PID: 27495 Comm: syz-executor.1 Not tainted 4.14.184-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880a8c90100 task.stack: ffff88805a520000
RIP: 0010:mark_buffer_dirty_inode+0x2d8/0x3a0 fs/buffer.c:605
RSP: 0018:ffff88805a527738 EFLAGS: 00010246
loop0: p2 size 1073741824 extends beyond EOD, 
RAX: 0000000000040000 RBX: ffff888059072690 RCX: ffffc9000ada3000
RDX: 0000000000040000 RSI: ffffffff8196db48 RDI: ffff88804f707f10
truncated
RBP: ffff88804f707db0 R08: 0000000000000001 R09: 0000000000000004
R10: ffff8880a8c90a28 R11: ffff8880a8c90100 R12: ffff8880a6d91468
R13: 0000000000000000 R14: ffff88805bb40240 R15: ffff88805a527810
FS:  00007f4ddc0e3700(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055927d560128 CR3: 00000000a0b33000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 fat_free_clusters+0x2fb/0x830 fs/fat/fatent.c:596
loop0: p3 size 2 extends beyond EOD, 
truncated
 fat_free fs/fat/file.c:351 [inline]
 fat_truncate_blocks+0x670/0xae0 fs/fat/file.c:369
loop0: p4 size 32768 extends beyond EOD, 
 fat_setattr+0x6c2/0xad0 fs/fat/file.c:513
 notify_change+0x56b/0xd10 fs/attr.c:313
truncated
 do_truncate+0xff/0x1a0 fs/open.c:63
loop0: p5 size 1073741824 extends beyond EOD, 
 handle_truncate fs/namei.c:3010 [inline]
 do_last fs/namei.c:3437 [inline]
 path_openat+0x1e4e/0x2aa0 fs/namei.c:3569
truncated
 do_filp_open+0x18e/0x250 fs/namei.c:3603
loop0: p6 size 32768 extends beyond EOD, 
truncated
 do_sys_open+0x292/0x3e0 fs/open.c:1081
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45cba9
RSP: 002b:00007f4ddc0e2c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00000000004dc020 RCX: 000000000045cba9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000240
RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000000a1 R14: 00000000004c3730 R15: 00007f4ddc0e36d4
Code: fa 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 75 4d 48 89 6b 58 4c 89 ef e8 62 78 a7 04 e9 20 fe ff ff e8 98 ca c3 ff <0f> 0b 4c 89 ff e8 2e 04 ed ff e9 05 fe ff ff e8 24 04 ed ff e9 
RIP: mark_buffer_dirty_inode+0x2d8/0x3a0 fs/buffer.c:605 RSP: ffff88805a527738
---[ end trace 4dfd746530d378a1 ]---