BUG: Bad page state in process jfsCommit  pfn:7d6dc
page:ffffea0001f5b700 refcount:0 mapcount:0 mapping:0000000000000000 index:0x2c pfn:0x7d6dc
flags: 0xfff0000000820d(locked|referenced|uptodate|workingset|private|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff0000000820d dead000000000100 dead000000000122 0000000000000000
raw: 000000000000002c ffff88805ec4dba0 00000000ffffffff 0000000000000000
page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x140c40(GFP_NOFS|__GFP_COMP|__GFP_HARDWALL), pid 6860, tgid 6859 (syz.1.285), ts 143192872378, free_ts 143032536348
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x1cd/0x210 mm/page_alloc.c:1554
 prep_new_page mm/page_alloc.c:1561 [inline]
 get_page_from_freelist+0x195c/0x19f0 mm/page_alloc.c:3191
 __alloc_pages+0x1e3/0x460 mm/page_alloc.c:4457
 folio_alloc+0x1e/0x30 mm/mempolicy.c:2291
 filemap_alloc_folio+0xdf/0x470 mm/filemap.c:1004
 __filemap_get_folio+0x3ee/0xbc0 mm/filemap.c:1962
 pagecache_get_page+0x2a/0x250 mm/folio-compat.c:99
 find_or_create_page include/linux/pagemap.h:755 [inline]
 grab_cache_page include/linux/pagemap.h:877 [inline]
 __get_metapage+0x2a8/0xfa0 fs/jfs/jfs_metapage.c:613
 dtSplitRoot+0x203/0x16b0 fs/jfs/jfs_dtree.c:1910
 dtSplitUp fs/jfs/jfs_dtree.c:993 [inline]
 dtInsert+0xeec/0x5f40 fs/jfs/jfs_dtree.c:871
 jfs_create+0x6a1/0xa40 fs/jfs/namei.c:137
 lookup_open fs/namei.c:3488 [inline]
 open_last_lookups fs/namei.c:3556 [inline]
 path_openat+0x1277/0x3190 fs/namei.c:3786
 do_filp_open+0x1c5/0x3d0 fs/namei.c:3816
 do_sys_openat2+0x12c/0x1c0 fs/open.c:1419
 do_sys_open fs/open.c:1434 [inline]
 __do_sys_creat fs/open.c:1512 [inline]
 __se_sys_creat fs/open.c:1506 [inline]
 __x64_sys_creat+0x90/0xb0 fs/open.c:1506
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1154 [inline]
 free_unref_page_prepare+0x7ce/0x8e0 mm/page_alloc.c:2336
 free_unref_page+0x32/0x2e0 mm/page_alloc.c:2429
 kvm_mmu_free_memory_cache+0x11a/0x240 virt/kvm/kvm_main.c:462
 mmu_free_memory_caches arch/x86/kvm/mmu/mmu.c:709 [inline]
 kvm_mmu_destroy+0x2a1/0x2e0 arch/x86/kvm/mmu/mmu.c:6949
 kvm_arch_vcpu_destroy+0x16b/0x280 arch/x86/kvm/x86.c:12031
 kvm_vcpu_destroy virt/kvm/kvm_main.c:510 [inline]
 kvm_destroy_vcpus+0xdb/0x250 virt/kvm/kvm_main.c:530
 kvm_arch_destroy_vm+0x338/0x420 arch/x86/kvm/x86.c:12529
 kvm_destroy_vm virt/kvm/kvm_main.c:1339 [inline]
 kvm_put_kvm+0xd52/0x1670 virt/kvm/kvm_main.c:1373
 kvm_vm_release+0x46/0x50 virt/kvm/kvm_main.c:1396
 __fput+0x234/0x970 fs/file_table.c:384
 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+0xb1/0x140 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
Modules linked in:
CPU: 1 PID: 111 Comm: jfsCommit Not tainted 6.6.98-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x16c/0x230 lib/dump_stack.c:106
 bad_page+0x14b/0x170 mm/page_alloc.c:512
 free_page_is_bad mm/page_alloc.c:961 [inline]
 free_pages_prepare mm/page_alloc.c:1146 [inline]
 free_unref_page_prepare+0x887/0x8e0 mm/page_alloc.c:2336
 free_unref_page+0x32/0x2e0 mm/page_alloc.c:2429
 txUnlock+0x27e/0xcb0 fs/jfs/jfs_txnmgr.c:932
 txLazyCommit fs/jfs/jfs_txnmgr.c:2682 [inline]
 jfs_lazycommit+0x570/0xa60 fs/jfs/jfs_txnmgr.c:2732
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>
page:ffffea0001f5b700 refcount:0 mapcount:0 mapping:0000000000000000 index:0x2c pfn:0x7d6dc
flags: 0xfff0000000820d(locked|referenced|uptodate|workingset|private|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff0000000820d dead000000000100 dead000000000122 0000000000000000
raw: 000000000000002c ffff88805ec4dba0 00000000ffffffff 0000000000000000
page dumped because: VM_BUG_ON_FOLIO(((unsigned int) folio_ref_count(folio) + 127u <= 127u))
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x140c40(GFP_NOFS|__GFP_COMP|__GFP_HARDWALL), pid 6860, tgid 6859 (syz.1.285), ts 143192872378, free_ts 143032536348
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x1cd/0x210 mm/page_alloc.c:1554
 prep_new_page mm/page_alloc.c:1561 [inline]
 get_page_from_freelist+0x195c/0x19f0 mm/page_alloc.c:3191
 __alloc_pages+0x1e3/0x460 mm/page_alloc.c:4457
 folio_alloc+0x1e/0x30 mm/mempolicy.c:2291
 filemap_alloc_folio+0xdf/0x470 mm/filemap.c:1004
 __filemap_get_folio+0x3ee/0xbc0 mm/filemap.c:1962
 pagecache_get_page+0x2a/0x250 mm/folio-compat.c:99
 find_or_create_page include/linux/pagemap.h:755 [inline]
 grab_cache_page include/linux/pagemap.h:877 [inline]
 __get_metapage+0x2a8/0xfa0 fs/jfs/jfs_metapage.c:613
 dtSplitRoot+0x203/0x16b0 fs/jfs/jfs_dtree.c:1910
 dtSplitUp fs/jfs/jfs_dtree.c:993 [inline]
 dtInsert+0xeec/0x5f40 fs/jfs/jfs_dtree.c:871
 jfs_create+0x6a1/0xa40 fs/jfs/namei.c:137
 lookup_open fs/namei.c:3488 [inline]
 open_last_lookups fs/namei.c:3556 [inline]
 path_openat+0x1277/0x3190 fs/namei.c:3786
 do_filp_open+0x1c5/0x3d0 fs/namei.c:3816
 do_sys_openat2+0x12c/0x1c0 fs/open.c:1419
 do_sys_open fs/open.c:1434 [inline]
 __do_sys_creat fs/open.c:1512 [inline]
 __se_sys_creat fs/open.c:1506 [inline]
 __x64_sys_creat+0x90/0xb0 fs/open.c:1506
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1154 [inline]
 free_unref_page_prepare+0x7ce/0x8e0 mm/page_alloc.c:2336
 free_unref_page+0x32/0x2e0 mm/page_alloc.c:2429
 kvm_mmu_free_memory_cache+0x11a/0x240 virt/kvm/kvm_main.c:462
 mmu_free_memory_caches arch/x86/kvm/mmu/mmu.c:709 [inline]
 kvm_mmu_destroy+0x2a1/0x2e0 arch/x86/kvm/mmu/mmu.c:6949
 kvm_arch_vcpu_destroy+0x16b/0x280 arch/x86/kvm/x86.c:12031
 kvm_vcpu_destroy virt/kvm/kvm_main.c:510 [inline]
 kvm_destroy_vcpus+0xdb/0x250 virt/kvm/kvm_main.c:530
 kvm_arch_destroy_vm+0x338/0x420 arch/x86/kvm/x86.c:12529
 kvm_destroy_vm virt/kvm/kvm_main.c:1339 [inline]
 kvm_put_kvm+0xd52/0x1670 virt/kvm/kvm_main.c:1373
 kvm_vm_release+0x46/0x50 virt/kvm/kvm_main.c:1396
 __fput+0x234/0x970 fs/file_table.c:384
 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+0xb1/0x140 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
------------[ cut here ]------------
kernel BUG at include/linux/mm.h:1447!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 111 Comm: jfsCommit Tainted: G    B              6.6.98-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:folio_get include/linux/mm.h:1447 [inline]
RIP: 0010:get_page include/linux/mm.h:1453 [inline]
RIP: 0010:put_metapage+0x253/0x340 fs/jfs/jfs_metapage.c:750
Code: 38 c1 0f 8c 32 ff ff ff 4c 89 ef e8 57 b3 dd fe e9 25 ff ff ff e8 8d 04 85 fe 48 8b 3c 24 48 c7 c6 40 06 e4 8a e8 7d 2e c6 fe <0f> 0b f3 0f 1e fa 4c 8b 2c 24 4c 89 ee 48 81 e6 ff 0f 00 00 31 ff
RSP: 0018:ffffc90002cf7cc0 EFLAGS: 00010246
RAX: 4db8259611044a00 RBX: ffff88805ec4dba0 RCX: 4db8259611044a00
RDX: 0000000000000000 RSI: ffffffff8afc7860 RDI: ffffffff8afc7820
RBP: 000000000000007f R08: ffffffff8e4a936f R09: 1ffffffff1c9526d
R10: dffffc0000000000 R11: fffffbfff1c9526e R12: ffff88805ec4dbc8
R13: ffffea0001f5b734 R14: 1ffff1100bd89b79 R15: 1ffff1100bd89b86
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe8b544f68 CR3: 0000000077db7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000004144
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 txUnlock+0x427/0xcb0 fs/jfs/jfs_txnmgr.c:947
 txLazyCommit fs/jfs/jfs_txnmgr.c:2682 [inline]
 jfs_lazycommit+0x570/0xa60 fs/jfs/jfs_txnmgr.c:2732
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:folio_get include/linux/mm.h:1447 [inline]
RIP: 0010:get_page include/linux/mm.h:1453 [inline]
RIP: 0010:put_metapage+0x253/0x340 fs/jfs/jfs_metapage.c:750
Code: 38 c1 0f 8c 32 ff ff ff 4c 89 ef e8 57 b3 dd fe e9 25 ff ff ff e8 8d 04 85 fe 48 8b 3c 24 48 c7 c6 40 06 e4 8a e8 7d 2e c6 fe <0f> 0b f3 0f 1e fa 4c 8b 2c 24 4c 89 ee 48 81 e6 ff 0f 00 00 31 ff
RSP: 0018:ffffc90002cf7cc0 EFLAGS: 00010246
RAX: 4db8259611044a00 RBX: ffff88805ec4dba0 RCX: 4db8259611044a00
RDX: 0000000000000000 RSI: ffffffff8afc7860 RDI: ffffffff8afc7820
RBP: 000000000000007f R08: ffffffff8e4a936f R09: 1ffffffff1c9526d
R10: dffffc0000000000 R11: fffffbfff1c9526e R12: ffff88805ec4dbc8
R13: ffffea0001f5b734 R14: 1ffff1100bd89b79 R15: 1ffff1100bd89b86
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f57f1ee8710 CR3: 0000000025dd3000 CR4: 00000000003506e0