BUG: sleeping function called from invalid context at fs/inode.c:1928
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5318, name: syz.0.0
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz.0.0/5318:
 #0: ffff888035e3c420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:508
 #1: ffff88804c431b80 (&sb->s_type->i_lock_key#35){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline]
 #1: ffff88804c431b80 (&sb->s_type->i_lock_key#35){+.+.}-{3:3}, at: f2fs_drop_inode+0x67e/0x950 fs/f2fs/super.c:1822
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 0 UID: 0 PID: 5318 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~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 __might_resched+0x495/0x610 kernel/sched/core.c:8925
 iput+0x2b/0xc50 fs/inode.c:1928
 f2fs_drop_inode+0x686/0x950 fs/f2fs/super.c:1823
 iput_final fs/inode.c:1884 [inline]
 iput+0x6dc/0xc50 fs/inode.c:1966
 do_unlinkat+0x39f/0x560 fs/namei.c:4744
 __do_sys_unlinkat fs/namei.c:4778 [inline]
 __se_sys_unlinkat fs/namei.c:4771 [inline]
 __x64_sys_unlinkat+0xd3/0xf0 fs/namei.c:4771
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6f2db8eec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6f2ea65038 EFLAGS: 00000246 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 00007f6f2dde6090 RCX: 00007f6f2db8eec9
RDX: 0000000000000000 RSI: 0000200000000c40 RDI: ffffffffffffff9c
RBP: 00007f6f2dc11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6f2dde6128 R14: 00007f6f2dde6090 R15: 00007fffd7fae368
 </TASK>
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5318 at fs/inode.c:1933 iput+0x38c/0xc50 fs/inode.c:1933
Modules linked in:
CPU: 0 UID: 0 PID: 5318 Comm: syz.0.0 Tainted: G        W           syzkaller #0 PREEMPT(full) 
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:iput+0x38c/0xc50 fs/inode.c:1933
Code: 80 3d 72 5d 48 0d 01 0f 85 b2 00 00 00 e8 5c 71 80 ff 4c 89 f7 be 10 00 00 00 e8 cf 85 06 00 e9 2c fd ff ff e8 45 71 80 ff 90 <0f> 0b 90 e9 70 fd ff ff e8 37 71 80 ff 90 0f 0b 90 e9 d7 fe ff ff
RSP: 0018:ffffc9000fc5fc48 EFLAGS: 00010287
RAX: ffffffff823fe24b RBX: 0000000000000001 RCX: 0000000000100000
RDX: ffffc9000e433000 RSI: 00000000000e3221 RDI: 00000000000e3222
RBP: ffff88804c431bb8 R08: ffffffff92986047 R09: 1ffffffff2530c08
R10: dffffc0000000000 R11: fffffbfff2530c09 R12: ffff88804c431ce8
R13: dffffc0000000000 R14: ffff88804c431ae8 R15: 1ffffffff1f3cc32
FS:  00007f6f2ea656c0(0000) GS:ffff88808d301000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6f2ea449a0 CR3: 000000003fa93000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 f2fs_drop_inode+0x686/0x950 fs/f2fs/super.c:1823
 iput_final fs/inode.c:1884 [inline]
 iput+0x6dc/0xc50 fs/inode.c:1966
 do_unlinkat+0x39f/0x560 fs/namei.c:4744
 __do_sys_unlinkat fs/namei.c:4778 [inline]
 __se_sys_unlinkat fs/namei.c:4771 [inline]
 __x64_sys_unlinkat+0xd3/0xf0 fs/namei.c:4771
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6f2db8eec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6f2ea65038 EFLAGS: 00000246 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 00007f6f2dde6090 RCX: 00007f6f2db8eec9
RDX: 0000000000000000 RSI: 0000200000000c40 RDI: ffffffffffffff9c
RBP: 00007f6f2dc11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6f2dde6128 R14: 00007f6f2dde6090 R15: 00007fffd7fae368
 </TASK>