================================================
WARNING: lock held when returning to user space!
6.10.0-next-20240719-syzkaller #0 Not tainted
------------------------------------------------
syz.0.89/5529 is leaving the kernel with locks still held!
1 lock held by syz.0.89/5529:
 #0: ffffffff8e337a60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
 #0: ffffffff8e337a60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #0: ffffffff8e337a60 (rcu_read_lock){....}-{1:2}, at: ns_ioctl+0x3e0/0x740 fs/nsfs.c:184
BUG: sleeping function called from invalid context at include/linux/sched/mm.h:337
in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 5529, name: syz.0.89
preempt_count: 0, expected: 0
RCU nest depth: 1, expected: 0
INFO: lockdep is turned off.
CPU: 0 UID: 0 PID: 5529 Comm: syz.0.89 Not tainted 6.10.0-next-20240719-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 __might_resched+0x5d4/0x780 kernel/sched/core.c:8526
 might_alloc include/linux/sched/mm.h:337 [inline]
 slab_pre_alloc_hook mm/slub.c:3939 [inline]
 slab_alloc_node mm/slub.c:4017 [inline]
 kmem_cache_alloc_noprof+0x5d/0x2a0 mm/slub.c:4044
 getname_flags+0xb7/0x540 fs/namei.c:139
 user_path_at+0x24/0x60 fs/namei.c:3005
 do_sys_truncate+0xa4/0x190 fs/open.c:132
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5d3fb75b59
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:00007f5d408ca048 EFLAGS: 00000246 ORIG_RAX: 000000000000004c
RAX: ffffffffffffffda RBX: 00007f5d3fd05f60 RCX: 00007f5d3fb75b59
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f5d3fbe4e5d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f5d3fd05f60 R15: 00007fff9d5e79f8
 </TASK>
------------[ cut here ]------------
Voluntary context switch within RCU read-side critical section!
WARNING: CPU: 0 PID: 5529 at kernel/rcu/tree_plugin.h:330 rcu_note_context_switch+0xcf4/0xff0 kernel/rcu/tree_plugin.h:330
Modules linked in:
CPU: 0 UID: 0 PID: 5529 Comm: syz.0.89 Tainted: G        W          6.10.0-next-20240719-syzkaller #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:rcu_note_context_switch+0xcf4/0xff0 kernel/rcu/tree_plugin.h:330
Code: 00 ba 02 00 00 00 e8 bb 02 fe ff 4c 8b b4 24 80 00 00 00 eb 91 c6 05 cd 46 1f 0e 01 90 48 c7 c7 00 2f cc 8b e8 8d c4 da ff 90 <0f> 0b 90 90 e9 3b f4 ff ff 90 0f 0b 90 45 84 ed 0f 84 00 f4 ff ff
RSP: 0018:ffffc900096cf6a0 EFLAGS: 00010046
RAX: f1ae198ae88ad900 RBX: ffff8880647d8444 RCX: 0000000000040000
RDX: ffffc900036e9000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc900096cf7f0 R08: ffffffff815592b2 R09: 1ffff1101728519a
R10: dffffc0000000000 R11: ffffed101728519b R12: ffff8880647d8000
R13: 0000000000000000 R14: 1ffff920012d9eec R15: dffffc0000000000
FS:  00007f5d408ca6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000002e3a0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __schedule+0x348/0x4a60 kernel/sched/core.c:6491
 __schedule_loop kernel/sched/core.c:6680 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6695
 futex_wait_queue+0x14e/0x1d0 kernel/futex/waitwake.c:370
 __futex_wait+0x17f/0x320 kernel/futex/waitwake.c:669
 futex_wait+0x101/0x360 kernel/futex/waitwake.c:697
 do_futex+0x33b/0x560 kernel/futex/syscalls.c:102
 __do_sys_futex kernel/futex/syscalls.c:179 [inline]
 __se_sys_futex+0x3f9/0x480 kernel/futex/syscalls.c:160
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5d3fb75b59
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:00007f5d408ca0f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f5d3fd05f68 RCX: 00007f5d3fb75b59
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f5d3fd05f68
RBP: 00007f5d3fd05f60 R08: 00007f5d408ca6c0 R09: 00007f5d408ca6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5d3fd05f6c
R13: 000000000000000b R14: 00007fff9d5e7910 R15: 00007fff9d5e79f8
 </TASK>