================================================
WARNING: lock held when returning to user space!
syzkaller #0 Not tainted
------------------------------------------------
rm/5927 is leaving the kernel with locks still held!
1 lock held by rm/5927:
 #0: ffffffff8e7e5260 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #0: ffffffff8e7e5260 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #0: ffffffff8e7e5260 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x2f/0x310 mm/pgtable-generic.c:290
BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:323
in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 5927, name: rm
preempt_count: 0, expected: 0
RCU nest depth: 1, expected: 0
INFO: lockdep is turned off.
CPU: 1 UID: 0 PID: 5927 Comm: rm 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
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 __might_resched.cold+0x1ec/0x232 kernel/sched/core.c:9162
 might_alloc include/linux/sched/mm.h:323 [inline]
 prepare_alloc_pages+0x44a/0x5f0 mm/page_alloc.c:4995
 __alloc_frozen_pages_noprof+0x19a/0x2bc0 mm/page_alloc.c:5215
 alloc_pages_mpol+0x1fb/0x540 mm/mempolicy.c:2490
 folio_alloc_mpol_noprof+0x36/0x260 mm/mempolicy.c:2509
 vma_alloc_folio_noprof+0xed/0x1d0 mm/mempolicy.c:2544
 folio_prealloc mm/memory.c:1193 [inline]
 wp_page_copy mm/memory.c:3859 [inline]
 do_wp_page+0x1ee1/0x4350 mm/memory.c:4320
 handle_pte_fault mm/memory.c:6427 [inline]
 __handle_mm_fault+0x1ab6/0x2a00 mm/memory.c:6549
 handle_mm_fault+0x36d/0xa20 mm/memory.c:6718
 do_user_addr_fault+0x5a3/0x12f0 arch/x86/mm/fault.c:1334
 handle_page_fault arch/x86/mm/fault.c:1474 [inline]
 exc_page_fault+0x6f/0xd0 arch/x86/mm/fault.c:1527
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7f414273e418
Code: fe ff ff 0f 1f 80 00 00 00 00 48 85 f6 0f 84 af 00 00 00 41 f6 85 56 03 00 00 20 0f 85 a1 00 00 00 49 8b 45 60 48 85 c0 74 04 <48> 01 70 08 49 8b 45 58 48 85 c0 74 04 48 01 70 08 49 8b 45 68 48
RSP: 002b:00007ffe638c10d0 EFLAGS: 00010202
RAX: 00007f4142489be0 RBX: 0000000000000030 RCX: 00007f414272db60
RDX: 00007f4142489d30 RSI: 00007f414247a000 RDI: 000000006fffffff
RBP: 00007ffe638c1220 R08: 0000000000000006 R09: 00000000effffef5
R10: 0000000070000029 R11: 00007ffe638c1308 R12: 00007ffe638c0f80
R13: 00007f414272db20 R14: 00007ffe638c12c0 R15: 00007f414248a010
 </TASK>