BUG: Bad page state in process jfsCommit  pfn:1f374
page:ffffea00007cdd00 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1c pfn:0x1f374
flags: 0xfff08000002047(locked|referenced|uptodate|workingset|private|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff08000002047 dead000000000100 dead000000000122 0000000000000000
raw: 000000000000001c ffff8880249519b0 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 11441, tgid 11439 (syz.1.2363), ts 412648904680, free_ts 409883841786
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x173/0x1a0 mm/page_alloc.c:2559
 prep_new_page mm/page_alloc.c:2566 [inline]
 get_page_from_freelist+0x1a1e/0x1ab0 mm/page_alloc.c:4357
 __alloc_pages+0x1ec/0x4f0 mm/page_alloc.c:5657
 folio_alloc+0x1c/0x60 mm/mempolicy.c:2292
 filemap_alloc_folio+0xdb/0x480 mm/filemap.c:999
 do_read_cache_folio+0x1bb/0x760 mm/filemap.c:3623
 do_read_cache_page+0x32/0x220 mm/filemap.c:3701
 read_mapping_page include/linux/pagemap.h:793 [inline]
 __get_metapage+0x316/0xfa0 fs/jfs/jfs_metapage.c:620
 diRead+0x6f7/0xbb0 fs/jfs/jfs_imap.c:367
 jfs_iget+0x89/0x3f0 fs/jfs/inode.c:35
 jfs_fill_super+0x70e/0xad0 fs/jfs/super.c:580
 mount_bdev+0x287/0x3c0 fs/super.c:1443
 legacy_get_tree+0xe6/0x180 fs/fs_context.c:632
 vfs_get_tree+0x88/0x270 fs/super.c:1573
 do_new_mount+0x24a/0xa40 fs/namespace.c:3078
 do_mount fs/namespace.c:3421 [inline]
 __do_sys_mount fs/namespace.c:3629 [inline]
 __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3606
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1486 [inline]
 free_pcp_prepare mm/page_alloc.c:1536 [inline]
 free_unref_page_prepare+0x8b4/0x9a0 mm/page_alloc.c:3413
 free_unref_page_list+0xbb/0x8e0 mm/page_alloc.c:3554
 release_pages+0x1fa6/0x2220 mm/swap.c:1035
 tlb_batch_pages_flush mm/mmu_gather.c:60 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:255 [inline]
 tlb_flush_mmu+0x105/0x220 mm/mmu_gather.c:262
 tlb_finish_mmu+0xf5/0x220 mm/mmu_gather.c:394
 exit_mmap+0x384/0x960 mm/mmap.c:3262
 __mmput+0x118/0x3c0 kernel/fork.c:1205
 exit_mm+0x1fe/0x2d0 kernel/exit.c:565
 do_exit+0x905/0x2480 kernel/exit.c:867
 do_group_exit+0x217/0x2d0 kernel/exit.c:1022
 __do_sys_exit_group kernel/exit.c:1033 [inline]
 __se_sys_exit_group kernel/exit.c:1031 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1031
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
Modules linked in:
CPU: 0 PID: 107 Comm: jfsCommit Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0x188/0x24e lib/dump_stack.c:106
 bad_page+0x14b/0x170 mm/page_alloc.c:726
 free_page_is_bad mm/page_alloc.c:1318 [inline]
 free_pages_prepare mm/page_alloc.c:1479 [inline]
 free_pcp_prepare mm/page_alloc.c:1536 [inline]
 free_unref_page_prepare+0x42a/0x9a0 mm/page_alloc.c:3413
 free_unref_page+0x2e/0x3f0 mm/page_alloc.c:3508
 txUnlock+0x27e/0xcb0 fs/jfs/jfs_txnmgr.c:933
 txLazyCommit fs/jfs/jfs_txnmgr.c:2683 [inline]
 jfs_lazycommit+0x56a/0xa70 fs/jfs/jfs_txnmgr.c:2733
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
page:ffffea00007cdd00 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1c pfn:0x1f374
flags: 0xfff08000002047(locked|referenced|uptodate|workingset|private|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff08000002047 dead000000000100 dead000000000122 0000000000000000
raw: 000000000000001c ffff8880249519b0 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 11441, tgid 11439 (syz.1.2363), ts 412648904680, free_ts 409883841786
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x173/0x1a0 mm/page_alloc.c:2559
 prep_new_page mm/page_alloc.c:2566 [inline]
 get_page_from_freelist+0x1a1e/0x1ab0 mm/page_alloc.c:4357
 __alloc_pages+0x1ec/0x4f0 mm/page_alloc.c:5657
 folio_alloc+0x1c/0x60 mm/mempolicy.c:2292
 filemap_alloc_folio+0xdb/0x480 mm/filemap.c:999
 do_read_cache_folio+0x1bb/0x760 mm/filemap.c:3623
 do_read_cache_page+0x32/0x220 mm/filemap.c:3701
 read_mapping_page include/linux/pagemap.h:793 [inline]
 __get_metapage+0x316/0xfa0 fs/jfs/jfs_metapage.c:620
 diRead+0x6f7/0xbb0 fs/jfs/jfs_imap.c:367
 jfs_iget+0x89/0x3f0 fs/jfs/inode.c:35
 jfs_fill_super+0x70e/0xad0 fs/jfs/super.c:580
 mount_bdev+0x287/0x3c0 fs/super.c:1443
 legacy_get_tree+0xe6/0x180 fs/fs_context.c:632
 vfs_get_tree+0x88/0x270 fs/super.c:1573
 do_new_mount+0x24a/0xa40 fs/namespace.c:3078
 do_mount fs/namespace.c:3421 [inline]
 __do_sys_mount fs/namespace.c:3629 [inline]
 __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3606
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1486 [inline]
 free_pcp_prepare mm/page_alloc.c:1536 [inline]
 free_unref_page_prepare+0x8b4/0x9a0 mm/page_alloc.c:3413
 free_unref_page_list+0xbb/0x8e0 mm/page_alloc.c:3554
 release_pages+0x1fa6/0x2220 mm/swap.c:1035
 tlb_batch_pages_flush mm/mmu_gather.c:60 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:255 [inline]
 tlb_flush_mmu+0x105/0x220 mm/mmu_gather.c:262
 tlb_finish_mmu+0xf5/0x220 mm/mmu_gather.c:394
 exit_mmap+0x384/0x960 mm/mmap.c:3262
 __mmput+0x118/0x3c0 kernel/fork.c:1205
 exit_mm+0x1fe/0x2d0 kernel/exit.c:565
 do_exit+0x905/0x2480 kernel/exit.c:867
 do_group_exit+0x217/0x2d0 kernel/exit.c:1022
 __do_sys_exit_group kernel/exit.c:1033 [inline]
 __se_sys_exit_group kernel/exit.c:1031 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1031
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
------------[ cut here ]------------
kernel BUG at include/linux/mm.h:1146!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 107 Comm: jfsCommit Tainted: G    B              syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:folio_get include/linux/mm.h:1146 [inline]
RIP: 0010:get_page include/linux/mm.h:1152 [inline]
RIP: 0010:put_metapage+0x24f/0x340 fs/jfs/jfs_metapage.c:721
Code: 38 c1 0f 8c 32 ff ff ff 4c 89 ef e8 1b b7 e0 fe e9 25 ff ff ff e8 e1 aa 8f fe 48 8b 3c 24 48 c7 c6 40 32 c6 8a e8 41 ca ca fe <0f> 0b 4c 8b 2c 24 4c 89 ee 48 81 e6 ff 0f 00 00 31 ff e8 9a ae 8f
RSP: 0018:ffffc90002d27ce0 EFLAGS: 00010246
RAX: 9f1e05530c0cdf00 RBX: ffff8880249519b0 RCX: 9f1e05530c0cdf00
RDX: 0000000000000000 RSI: ffffffff8adf1380 RDI: ffffffff8adf1340
RBP: 000000000000007f R08: ffffffff8e1ff42f R09: 1ffffffff1c3fe85
R10: dffffc0000000000 R11: fffffbfff1c3fe86 R12: ffff8880249519d8
R13: ffffea00007cdd34 R14: 1ffff1100492a33b R15: 1ffff1100492a348
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd5f6b41000 CR3: 0000000078edc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 txUnlock+0x427/0xcb0 fs/jfs/jfs_txnmgr.c:948
 txLazyCommit fs/jfs/jfs_txnmgr.c:2683 [inline]
 jfs_lazycommit+0x56a/0xa70 fs/jfs/jfs_txnmgr.c:2733
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:folio_get include/linux/mm.h:1146 [inline]
RIP: 0010:get_page include/linux/mm.h:1152 [inline]
RIP: 0010:put_metapage+0x24f/0x340 fs/jfs/jfs_metapage.c:721
Code: 38 c1 0f 8c 32 ff ff ff 4c 89 ef e8 1b b7 e0 fe e9 25 ff ff ff e8 e1 aa 8f fe 48 8b 3c 24 48 c7 c6 40 32 c6 8a e8 41 ca ca fe <0f> 0b 4c 8b 2c 24 4c 89 ee 48 81 e6 ff 0f 00 00 31 ff e8 9a ae 8f
RSP: 0018:ffffc90002d27ce0 EFLAGS: 00010246
RAX: 9f1e05530c0cdf00 RBX: ffff8880249519b0 RCX: 9f1e05530c0cdf00
RDX: 0000000000000000 RSI: ffffffff8adf1380 RDI: ffffffff8adf1340
RBP: 000000000000007f R08: ffffffff8e1ff42f R09: 1ffffffff1c3fe85
R10: dffffc0000000000 R11: fffffbfff1c3fe86 R12: ffff8880249519d8
R13: ffffea00007cdd34 R14: 1ffff1100492a33b R15: 1ffff1100492a348
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd5f6b40000 CR3: 000000007c301000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400