BUG: sleeping function called from invalid context at fs/inode.c:1928
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5325, name: syz.0.0
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
1 lock held by syz.0.0/5325:
 #0: ffff88800dcba478 (&sb->s_type->i_lock_key#35){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline]
 #0: ffff88800dcba478 (&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: 5325 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+0x6d9/0xc50 fs/inode.c:1966
 __dentry_kill+0x209/0x660 fs/dcache.c:669
 dput+0x19f/0x2b0 fs/dcache.c:911
 __fput+0x68e/0xa70 fs/file_table.c:476
 task_work_run+0x1d4/0x260 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop+0xe9/0x130 kernel/entry/common.c:43
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x2bd/0xfa0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc3e018eec9
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:00007ffc27a3d908 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 0000000000014bc6 RCX: 00007fc3e018eec9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fc3e03e7da0 R08: 0000000000000001 R09: 0000000a27a3dbff
R10: 00007fc3dffff030 R11: 0000000000000246 R12: 00007fc3e03e5fac
R13: 00007fc3e03e5fa0 R14: ffffffffffffffff R15: 00007ffc27a3da20
 </TASK>
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5325 at fs/inode.c:1933 iput+0x38c/0xc50 fs/inode.c:1933
Modules linked in:
CPU: 0 UID: 0 PID: 5325 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 53 12 49 0d 01 0f 85 b2 00 00 00 e8 0c 73 80 ff 4c 89 f7 be 10 00 00 00 e8 cf 85 06 00 e9 2c fd ff ff e8 f5 72 80 ff 90 <0f> 0b 90 e9 70 fd ff ff e8 e7 72 80 ff 90 0f 0b 90 e9 d7 fe ff ff
RSP: 0018:ffffc9000d1a7bb0 EFLAGS: 00010293
RAX: ffffffff823f30ab RBX: 0000000000000001 RCX: ffff88801f8bc900
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffff88800dcba4b0 R08: ffffffff92983047 R09: 1ffffffff2530608
R10: dffffc0000000000 R11: fffffbfff2530609 R12: ffff88800dcba5e0
R13: dffffc0000000000 R14: ffff88800dcba3e0 R15: 1ffffffff1f3cc92
FS:  000055557bd00500(0000) GS:ffff88808d304000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000001273a000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 f2fs_drop_inode+0x686/0x950 fs/f2fs/super.c:1823
 iput_final fs/inode.c:1884 [inline]
 iput+0x6d9/0xc50 fs/inode.c:1966
 __dentry_kill+0x209/0x660 fs/dcache.c:669
 dput+0x19f/0x2b0 fs/dcache.c:911
 __fput+0x68e/0xa70 fs/file_table.c:476
 task_work_run+0x1d4/0x260 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop+0xe9/0x130 kernel/entry/common.c:43
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x2bd/0xfa0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc3e018eec9
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:00007ffc27a3d908 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 0000000000014bc6 RCX: 00007fc3e018eec9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fc3e03e7da0 R08: 0000000000000001 R09: 0000000a27a3dbff
R10: 00007fc3dffff030 R11: 0000000000000246 R12: 00007fc3e03e5fac
R13: 00007fc3e03e5fa0 R14: ffffffffffffffff R15: 00007ffc27a3da20
 </TASK>