================================================
WARNING: lock held when returning to user space!
6.10.0-syzkaller-04472-g51835949dda3 #0 Not tainted
------------------------------------------------
syz.2.3/5266 is leaving the kernel with locks still held!
1 lock held by syz.2.3/5266:
 #0: ffffffff8dbb15e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:327 [inline]
 #0: ffffffff8dbb15e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:839 [inline]
 #0: ffffffff8dbb15e0 (rcu_read_lock){....}-{1:2}, at: ns_ioctl+0x217/0x7b0 fs/nsfs.c:184
------------[ cut here ]------------
Voluntary context switch within RCU read-side critical section!
WARNING: CPU: 0 PID: 5266 at kernel/rcu/tree_plugin.h:330 rcu_note_context_switch+0xc5c/0x1ae0 kernel/rcu/tree_plugin.h:330
Modules linked in:
CPU: 0 PID: 5266 Comm: syz.2.3 Not tainted 6.10.0-syzkaller-04472-g51835949dda3 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:rcu_note_context_switch+0xc5c/0x1ae0 kernel/rcu/tree_plugin.h:330
Code: 74 00 4c 8b 54 24 30 48 8b 44 24 28 8b 4c 24 10 e9 c6 03 00 00 c6 05 d9 91 58 0e 01 90 48 c7 c7 80 83 2e 8b e8 05 35 da ff 90 <0f> 0b 90 90 e9 a8 f4 ff ff 38 d0 7f 08 84 c0 0f 85 2b 08 00 00 80
RSP: 0000:ffffc90003c2fce8 EFLAGS: 00010082
RAX: 0000000000000000 RBX: ffff88806b03fbc0 RCX: ffffc900057ca000
RDX: 0000000000040000 RSI: ffffffff81504576 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 7261746e756c6f56 R12: ffff88802a538000
R13: ffff88802a538000 R14: ffff88802a538000 R15: ffff88806b03ec80
FS:  00007fb9d9bf96c0(0000) GS:ffff88806b000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556f63e808 CR3: 000000002c6c8000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __schedule+0x291/0x5490 kernel/sched/core.c:6417
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6621
 exit_to_user_mode_loop kernel/entry/common.c:102 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 irqentry_exit_to_user_mode+0xe4/0x280 kernel/entry/common.c:231
 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0033:0x7fb9d8d75a19
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:00007fb9d9bf9048 EFLAGS: 00000246
RAX: fffffffffffffffd RBX: 00007fb9d8f03f60 RCX: 00007fb9d8d75a19
RDX: 0000000000000000 RSI: 000000008004b706 RDI: 0000000000000003
RBP: 00007fb9d8de4e49 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fb9d8f03f60 R15: 00007ffd51615bb8
 </TASK>