syzbot

 task_work_run+0x1ce/0x250 kernel/task_work.c:239
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0xf6/0x180 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5956 at include/linux/memcontrol.h:764 folio_lruvec include/linux/memcontrol.h:764 [inline]
WARNING: CPU: 0 PID: 5956 at include/linux/memcontrol.h:764 folio_lruvec_lock_irqsave+0x212/0x270 mm/memcontrol.c:1369
Modules linked in:
CPU: 0 PID: 5956 Comm: syz.1.19 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:folio_lruvec include/linux/memcontrol.h:764 [inline]
RIP: 0010:folio_lruvec_lock_irqsave+0x212/0x270 mm/memcontrol.c:1369
Code: 4c 89 f7 e8 c0 32 f9 ff 48 8b 04 24 49 89 06 e9 1c ff ff ff 48 89 df 48 c7 c6 80 bc b6 8a e8 05 a9 e1 ff c6 05 2a 92 51 0c 01 <0f> 0b e9 1b fe ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 9d fe
RSP: 0018:ffffc90004df75d8 EFLAGS: 00010246
RAX: 9f7137bd4433e400 RBX: ffffea0000bf3f80 RCX: 9f7137bd4433e400
RDX: 0000000000000002 RSI: ffffffff8aaace20 RDI: ffffffff8afc72c0
RBP: ffffc90004df7680 R08: ffffffff8e4a94ef R09: 1ffffffff1c9529d
R10: dffffc0000000000 R11: fffffbfff1c9529e R12: ffff8880b8e36e68
R13: dffffc0000000000 R14: ffff888023fac000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc70cd997b0 CR3: 000000002e3b1000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 folio_lruvec_relock_irqsave include/linux/memcontrol.h:1654 [inline]
 folio_batch_move_lru+0x2d8/0x6b0 mm/swap.c:208
 lru_add_drain_cpu+0x10e/0x8c0 mm/swap.c:644
 lru_add_drain+0x121/0x3e0 mm/swap.c:744
 exit_mmap+0x1cb/0xb50 mm/mmap.c:3297
 __mmput+0x118/0x3c0 kernel/fork.c:1355
 exit_mm+0x1da/0x2c0 kernel/exit.c:569
 do_exit+0x88e/0x23c0 kernel/exit.c:870
 do_group_exit+0x21b/0x2d0 kernel/exit.c:1024
 get_signal+0x12fc/0x1400 kernel/signal.c:2902
 arch_do_signal_or_restart+0x96/0x780 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xf6/0x180 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fd36578eba9
Code: Unable to access opcode bytes at 0x7fd36578eb7f.
RSP: 002b:00007fd36654a038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: 0000000000010106 RBX: 00007fd3659d6090 RCX: 00007fd36578eba9
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000006
RBP: 00007fd365811e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd3659d6128 R14: 00007fd3659d6090 R15: 00007ffeb9078cc8
 </TASK>