------------[ cut here ]------------
!buffer_uptodate(bh)
WARNING: fs/buffer.c:991 at mark_buffer_dirty+0x299/0x410 fs/buffer.c:991, CPU#0: syz.0.0/5323
Modules linked in:
CPU: 0 UID: 0 PID: 5323 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:mark_buffer_dirty+0x299/0x410 fs/buffer.c:991
Code: 4c 89 f7 e8 79 1a d8 ff 49 8b 3e be 40 00 00 00 5b 41 5c 41 5e 41 5f 5d e9 74 52 fb ff e8 ff d1 66 ff eb 8c e8 f8 d1 66 ff 90 <0f> 0b 90 e9 a5 fd ff ff e8 ea d1 66 ff 90 0f 0b 90 e9 cf fd ff ff
RSP: 0018:ffffc9000dfc7810 EFLAGS: 00010287
RAX: ffffffff826062c8 RBX: ffff8880425eae00 RCX: 0000000000100000
RDX: ffffc9000f449000 RSI: 000000000000722d RDI: 000000000000722e
RBP: ffffc9000dfc7901 R08: ffff8880425eae07 R09: 1ffff110084bd5c0
R10: dffffc0000000000 R11: ffffed10084bd5c1 R12: ffff8880425730b0
R13: 1ffff92001bf8f14 R14: ffffffff82ad9f70 R15: 0000000000000001
FS:  00007f6c96c9d6c0(0000) GS:ffff88808c30a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6c929f6990 CR3: 000000000be1e000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 evict+0x624/0xb50 fs/inode.c:822
 add_nondir fs/minix/namei.c:18 [inline]
 minix_mknod fs/minix/namei.c:50 [inline]
 minix_create+0x88/0xb0 fs/minix/namei.c:69
 lookup_open+0xc0d/0x1a40 fs/namei.c:4567
 open_last_lookups fs/namei.c:4767 [inline]
 path_openat+0x677/0x1d60 fs/namei.c:4997
 do_file_open+0x23e/0x4a0 fs/namei.c:5029
 do_sys_openat2+0x115/0x200 fs/open.c:1417
 do_sys_open fs/open.c:1423 [inline]
 __do_sys_openat fs/open.c:1439 [inline]
 __se_sys_openat fs/open.c:1434 [inline]
 __x64_sys_openat+0x138/0x170 fs/open.c:1434
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6c95d9e0d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6c96c9cfe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f6c96026090 RCX: 00007f6c95d9e0d9
RDX: 0000000000143441 RSI: 0000200000000040 RDI: ffffffffffffff9c
RBP: 00007f6c95e35024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000098 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6c96026128 R14: 00007f6c96026090 R15: 00007ffd77f56c78
 </TASK>