------------[ cut here ]------------
WARNING: mm/memcontrol-v1.c:642 at memcg1_swapout+0x6c2/0x8d0 mm/memcontrol-v1.c:642, CPU#1: syz.0.2903/30796
Modules linked in:
CPU: 1 UID: 0 PID: 30796 Comm: syz.0.2903 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:memcg1_swapout+0x6c2/0x8d0 mm/memcontrol-v1.c:642
Code: ce 7e 0d 00 0f 85 01 fa ff ff 48 89 df 48 c7 c6 20 c4 98 8b e8 8f 4e f8 fe c6 05 3b ce 7e 0d 01 90 0f 0b 90 e9 e2 f9 ff ff 90 <0f> 0b 90 e9 eb fb ff ff 90 0f 0b 90 41 80 3c 2e 00 0f 85 d5 fe ff
RSP: 0018:ffffc9000c05d0b8 EFLAGS: 00010002
RAX: 0000000000000002 RBX: ffffea00027dae00 RCX: ffff888020348150
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffc90003f38c1c
RBP: dffffc0000000000 R08: ffffc90003f38c1f R09: 1ffff920007e7183
R10: dffffc0000000000 R11: fffff520007e7184 R12: ffffea00027dae08
R13: 1ffffd40004fb5c0 R14: 1ffffd40004fb5c1 R15: ffff88807f814358
FS:  00007f12884586c0(0000) GS:ffff888125aad000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005654d83cf138 CR3: 0000000045066000 CR4: 00000000003526f0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083
DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __remove_mapping+0xac5/0xe30 mm/vmscan.c:764
 shrink_folio_list+0x28d8/0x5320 mm/vmscan.c:1542
 evict_folios+0x473e/0x57f0 mm/vmscan.c:4748
 try_to_shrink_lruvec+0x8be/0xb60 mm/vmscan.c:4911
 lru_gen_shrink_lruvec mm/vmscan.c:5060 [inline]
 shrink_lruvec+0x4a3/0x2a40 mm/vmscan.c:5814
 shrink_node_memcgs mm/vmscan.c:6050 [inline]
 shrink_node+0xa19/0x39c0 mm/vmscan.c:6091
 shrink_zones mm/vmscan.c:6330 [inline]
 do_try_to_free_pages+0x668/0x18a0 mm/vmscan.c:6392
 try_to_free_mem_cgroup_pages+0x2b6/0x730 mm/vmscan.c:6713
 try_charge_memcg+0xa2d/0x1280 mm/memcontrol.c:2414
 try_charge mm/memcontrol.c:2556 [inline]
 charge_memcg+0x9f/0x180 mm/memcontrol.c:4728
 __mem_cgroup_charge+0x25/0x80 mm/memcontrol.c:4745
 mem_cgroup_charge include/linux/memcontrol.h:665 [inline]
 shmem_alloc_and_add_folio+0x790/0xf40 mm/shmem.c:1955
 shmem_get_folio_gfp+0x59d/0x1660 mm/shmem.c:2540
 shmem_get_folio mm/shmem.c:2646 [inline]
 shmem_write_begin+0x16c/0x330 mm/shmem.c:3299
 generic_perform_write+0x2c5/0x900 mm/filemap.c:4314
 shmem_file_write_iter+0xf8/0x120 mm/shmem.c:3474
 __kernel_write_iter+0x428/0x910 fs/read_write.c:621
 dump_emit_page fs/coredump.c:1298 [inline]
 dump_user_range+0x8a0/0xc90 fs/coredump.c:1372
 elf_core_dump+0x3369/0x3960 fs/binfmt_elf.c:2111
 coredump_write+0x1121/0x18b0 fs/coredump.c:1049
 do_coredump fs/coredump.c:1126 [inline]
 vfs_coredump+0x3321/0x3e60 fs/coredump.c:1200
 get_signal+0x1108/0x1340 kernel/signal.c:3019
 arch_do_signal_or_restart+0x9a/0x7a0 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:41 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:75 [inline]
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:270 [inline]
 irqentry_exit_to_user_mode include/linux/irq-entry-common.h:339 [inline]
 irqentry_exit+0x178/0x670 kernel/entry/common.c:196
 exc_general_protection+0x171/0x1f0 arch/x86/kernel/traps.c:913
 asm_exc_general_protection+0x26/0x30 arch/x86/include/asm/idtentry.h:612
RIP: 0033:0x7f128758f751
Code: 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 83 c8 ff c3 66 2e 0f 1f
RSP: 002b:0000200000000190 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f12877e6090 RCX: 00007f128758f749
RDX: 0000200000000040 RSI: 0000200000000190 RDI: 0000000008000000
RBP: 00007f1287613f91 R08: 0000200000000200 R09: 0000200000000200
R10: 00002000000001c0 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f12877e6128 R14: 00007f12877e6090 R15: 00007ffc997d6148
 </TASK>