BUG: Bad rss-counter state mm:ffff888070d7bc00 type:MM_SHMEMPAGES val:16 page: refcount:3 mapcount:1 mapping:ffff88807bca90b0 index:0x0 pfn:0x5bc53 memcg:ffff888061956000 aops:shmem_aops ino:438 flags: 0xfff6800002002d(locked|referenced|uptodate|lru|swapbacked|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff6800002002d ffffea000173a7c8 ffffea00016f1508 ffff88807bca90b0 raw: 0000000000000000 0000000000000000 0000000300000000 ffff888061956000 page dumped because: VM_BUG_ON_FOLIO(folio_mapped(folio)) page_owner tracks the page as allocated page last allocated via order 0, migratetype Movable, gfp_mask 0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), pid 6352, tgid 6350 (syz.1.127), ts 102446270979, free_ts 102424405337 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1549 prep_new_page mm/page_alloc.c:1557 [inline] get_page_from_freelist+0x365c/0x37a0 mm/page_alloc.c:3475 __alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4752 alloc_pages_mpol+0x30e/0x550 mm/mempolicy.c:2270 folio_alloc_mpol_noprof+0x36/0x70 mm/mempolicy.c:2288 shmem_alloc_folio mm/shmem.c:1858 [inline] shmem_alloc_and_add_folio+0x4a0/0x1090 mm/shmem.c:1897 shmem_get_folio_gfp+0x621/0x1840 mm/shmem.c:2419 shmem_fault+0x220/0x5b0 mm/shmem.c:2620 __do_fault+0x135/0x390 mm/memory.c:4978 do_read_fault mm/memory.c:5393 [inline] do_fault mm/memory.c:5527 [inline] do_pte_missing mm/memory.c:4048 [inline] handle_pte_fault+0x39eb/0x5ee0 mm/memory.c:5872 __handle_mm_fault mm/memory.c:6015 [inline] handle_mm_fault+0x1106/0x1bb0 mm/memory.c:6183 faultin_page mm/gup.c:1200 [inline] __get_user_pages+0x1b31/0x4370 mm/gup.c:1495 populate_vma_page_range+0x264/0x330 mm/gup.c:1933 __mm_populate+0x27a/0x460 mm/gup.c:2036 mm_populate include/linux/mm.h:3389 [inline] vm_mmap_pgoff+0x303/0x430 mm/util.c:585 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 page last free pid 6345 tgid 6338 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1127 [inline] free_unref_folios+0xe40/0x18b0 mm/page_alloc.c:2705 folios_put_refs+0x76c/0x860 mm/swap.c:987 folio_batch_release include/linux/pagevec.h:101 [inline] shmem_undo_range+0x593/0x1820 mm/shmem.c:1108 shmem_truncate_range mm/shmem.c:1220 [inline] shmem_evict_inode+0x29b/0xa80 mm/shmem.c:1348 evict+0x4e8/0x9a0 fs/inode.c:796 __dentry_kill+0x20d/0x630 fs/dcache.c:625 dput+0x19f/0x2b0 fs/dcache.c:867 __fput+0x5ba/0xa50 fs/file_table.c:458 task_work_run+0x24f/0x310 kernel/task_work.c:227 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0xa2f/0x28e0 kernel/exit.c:938 do_group_exit+0x207/0x2c0 kernel/exit.c:1087 get_signal+0x16b2/0x1750 kernel/signal.c:3017 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xce/0x340 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f ------------[ cut here ]------------ kernel BUG at mm/filemap.c:162! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 UID: 0 PID: 6350 Comm: syz.1.127 Not tainted 6.13.0-rc1-next-20241205-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:filemap_unaccount_folio+0x73d/0x7d0 mm/filemap.c:162 Code: 04 c8 ff 48 89 df 48 c7 c6 60 8e 13 8c e8 bb bc 11 00 90 0f 0b e8 13 04 c8 ff 48 89 df 48 c7 c6 40 8d 13 8c e8 a4 bc 11 00 90 <0f> 0b e8 fc 03 c8 ff 48 89 df 48 c7 c6 60 8e 13 8c e8 8d bc 11 00 RSP: 0018:ffffc900023cf2d0 EFLAGS: 00010046 RAX: 1663618449394800 RBX: ffffea00016f14c0 RCX: ffffc900023cee03 RDX: 0000000000000002 RSI: ffffffff8c0aa440 RDI: ffffffff8c5fbe80 RBP: 0000000000000000 R08: ffffffff9019d9b7 R09: 1ffffffff2033b36 R10: dffffc0000000000 R11: fffffbfff2033b37 R12: dffffc0000000000 R13: 1ffffd40002de299 R14: ffff88807bca90b0 R15: ffffea00016f14c8 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6cfa9dbfb8 CR3: 000000000e736000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __filemap_remove_folio+0xc7/0x670 mm/filemap.c:231 filemap_remove_folio+0xe1/0x1f0 mm/filemap.c:264 truncate_inode_folio+0x5d/0x70 mm/truncate.c:162 shmem_undo_range+0x44b/0x1820 mm/shmem.c:1104 shmem_truncate_range mm/shmem.c:1220 [inline] shmem_evict_inode+0x29b/0xa80 mm/shmem.c:1348 evict+0x4e8/0x9a0 fs/inode.c:796 __dentry_kill+0x20d/0x630 fs/dcache.c:625 dput+0x19f/0x2b0 fs/dcache.c:867 __fput+0x5ba/0xa50 fs/file_table.c:458 task_work_run+0x24f/0x310 kernel/task_work.c:227 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0xa2f/0x28e0 kernel/exit.c:938 do_group_exit+0x207/0x2c0 kernel/exit.c:1087 __do_sys_exit_group kernel/exit.c:1098 [inline] __se_sys_exit_group kernel/exit.c:1096 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1096 x64_sys_call+0x26a8/0x26b0 arch/x86/include/generated/asm/syscalls_64.h:232 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: 0033:0x7f729797ff19 Code: Unable to access opcode bytes at 0x7f729797feef. RSP: 002b:00007fffad25c208 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f729797ff19 RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fffad25c25c R08: 00007fffad25c2ef R09: 0000000000018efd R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000032 R13: 0000000000018efd R14: 0000000000018bae R15: 00007fffad25c2b0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:filemap_unaccount_folio+0x73d/0x7d0 mm/filemap.c:162 Code: 04 c8 ff 48 89 df 48 c7 c6 60 8e 13 8c e8 bb bc 11 00 90 0f 0b e8 13 04 c8 ff 48 89 df 48 c7 c6 40 8d 13 8c e8 a4 bc 11 00 90 <0f> 0b e8 fc 03 c8 ff 48 89 df 48 c7 c6 60 8e 13 8c e8 8d bc 11 00 RSP: 0018:ffffc900023cf2d0 EFLAGS: 00010046 RAX: 1663618449394800 RBX: ffffea00016f14c0 RCX: ffffc900023cee03 RDX: 0000000000000002 RSI: ffffffff8c0aa440 RDI: ffffffff8c5fbe80 RBP: 0000000000000000 R08: ffffffff9019d9b7 R09: 1ffffffff2033b36 R10: dffffc0000000000 R11: fffffbfff2033b37 R12: dffffc0000000000 R13: 1ffffd40002de299 R14: ffff88807bca90b0 R15: ffffea00016f14c8 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6cfa9dbfb8 CR3: 000000000e736000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400