blkno = 8ed2c, nblocks = 1
ERROR: (device loop6): dbUpdatePMap: blocks are outside the map
ERROR: (device loop6): remounting filesystem as read-only
BUG: Bad page state in process jfsCommit  pfn:6735d
page:ffffea00019cd740 refcount:0 mapcount:0 mapping:0000000000000000 index:0x8ed2c pfn:0x6735d
flags: 0xfff00000002007(locked|referenced|uptodate|private|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000002007 dead000000000100 dead000000000122 0000000000000000
raw: 000000000008ed2c ffff88806236f4d8 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 0x100c40(GFP_NOFS|__GFP_HARDWALL), pid 6106, ts 141420219198, free_ts 141400943505
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x1b77/0x1c60 mm/page_alloc.c:4192
 __alloc_pages+0x1e1/0x470 mm/page_alloc.c:5487
 __page_cache_alloc+0xd2/0x3f0 mm/filemap.c:1022
 pagecache_get_page+0x986/0xef0 mm/filemap.c:1940
 find_or_create_page include/linux/pagemap.h:420 [inline]
 grab_cache_page include/linux/pagemap.h:502 [inline]
 __get_metapage+0x282/0x1060 fs/jfs/jfs_metapage.c:614
 dtSplitRoot+0x1e5/0x1510 fs/jfs/jfs_dtree.c:1910
 dtSplitUp fs/jfs/jfs_dtree.c:993 [inline]
 dtInsert+0xe20/0x57a0 fs/jfs/jfs_dtree.c:871
 jfs_rename+0x7b9/0x16a0 fs/jfs/namei.c:1224
 vfs_rename+0xbbf/0x10d0 fs/namei.c:4840
 do_renameat2+0xa83/0xf70 fs/namei.c:4993
 __do_sys_rename fs/namei.c:5039 [inline]
 __se_sys_rename fs/namei.c:5037 [inline]
 __x64_sys_rename+0x82/0x90 fs/namei.c:5037
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1340 [inline]
 free_pcp_prepare mm/page_alloc.c:1391 [inline]
 free_unref_page_prepare+0x637/0x6c0 mm/page_alloc.c:3317
 free_unref_page+0x94/0x280 mm/page_alloc.c:3396
 __vunmap+0x8ab/0xa40 mm/vmalloc.c:2628
 free_compression_buffers+0x1f/0x40 fs/ntfs/compress.c:79
 ntfs_fill_super+0x1d94/0x2c90 fs/ntfs/super.c:3003
 mount_bdev+0x287/0x3c0 fs/super.c:1400
 legacy_get_tree+0xe6/0x180 fs/fs_context.c:611
 vfs_get_tree+0x88/0x270 fs/super.c:1530
 do_new_mount+0x24a/0xa40 fs/namespace.c:3034
 do_mount fs/namespace.c:3377 [inline]
 __do_sys_mount fs/namespace.c:3585 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3562
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
Modules linked in:
CPU: 1 PID: 276 Comm: jfsCommit Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
 bad_page+0x14b/0x170 mm/page_alloc.c:652
 check_free_page mm/page_alloc.c:1209 [inline]
 free_pages_prepare mm/page_alloc.c:1334 [inline]
 free_pcp_prepare mm/page_alloc.c:1391 [inline]
 free_unref_page_prepare+0x383/0x6c0 mm/page_alloc.c:3317
 free_unref_page+0x94/0x280 mm/page_alloc.c:3396
 txUnlock+0x27e/0xcb0 fs/jfs/jfs_txnmgr.c:933
 txLazyCommit fs/jfs/jfs_txnmgr.c:2717 [inline]
 jfs_lazycommit+0x583/0xb20 fs/jfs/jfs_txnmgr.c:2767
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
page:ffffea00019cd740 refcount:0 mapcount:0 mapping:0000000000000000 index:0x8ed2c pfn:0x6735d
flags: 0xfff00000002007(locked|referenced|uptodate|private|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000002007 dead000000000100 dead000000000122 0000000000000000
raw: 000000000008ed2c ffff88806236f4d8 00000000ffffffff 0000000000000000
page dumped because: VM_BUG_ON_PAGE(((unsigned int) page_ref_count(page) + 127u <= 127u))
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x100c40(GFP_NOFS|__GFP_HARDWALL), pid 6106, ts 141420219198, free_ts 141400943505
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x1b77/0x1c60 mm/page_alloc.c:4192
 __alloc_pages+0x1e1/0x470 mm/page_alloc.c:5487
 __page_cache_alloc+0xd2/0x3f0 mm/filemap.c:1022
 pagecache_get_page+0x986/0xef0 mm/filemap.c:1940
 find_or_create_page include/linux/pagemap.h:420 [inline]
 grab_cache_page include/linux/pagemap.h:502 [inline]
 __get_metapage+0x282/0x1060 fs/jfs/jfs_metapage.c:614
 dtSplitRoot+0x1e5/0x1510 fs/jfs/jfs_dtree.c:1910
 dtSplitUp fs/jfs/jfs_dtree.c:993 [inline]
 dtInsert+0xe20/0x57a0 fs/jfs/jfs_dtree.c:871
 jfs_rename+0x7b9/0x16a0 fs/jfs/namei.c:1224
 vfs_rename+0xbbf/0x10d0 fs/namei.c:4840
 do_renameat2+0xa83/0xf70 fs/namei.c:4993
 __do_sys_rename fs/namei.c:5039 [inline]
 __se_sys_rename fs/namei.c:5037 [inline]
 __x64_sys_rename+0x82/0x90 fs/namei.c:5037
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1340 [inline]
 free_pcp_prepare mm/page_alloc.c:1391 [inline]
 free_unref_page_prepare+0x637/0x6c0 mm/page_alloc.c:3317
 free_unref_page+0x94/0x280 mm/page_alloc.c:3396
 __vunmap+0x8ab/0xa40 mm/vmalloc.c:2628
 free_compression_buffers+0x1f/0x40 fs/ntfs/compress.c:79
 ntfs_fill_super+0x1d94/0x2c90 fs/ntfs/super.c:3003
 mount_bdev+0x287/0x3c0 fs/super.c:1400
 legacy_get_tree+0xe6/0x180 fs/fs_context.c:611
 vfs_get_tree+0x88/0x270 fs/super.c:1530
 do_new_mount+0x24a/0xa40 fs/namespace.c:3034
 do_mount fs/namespace.c:3377 [inline]
 __do_sys_mount fs/namespace.c:3585 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3562
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
------------[ cut here ]------------
kernel BUG at include/linux/mm.h:1224!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 276 Comm: jfsCommit Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:get_page include/linux/mm.h:1224 [inline]
RIP: 0010:put_metapage+0x278/0x280 fs/jfs/jfs_metapage.c:722
Code: 38 c1 0f 8c 00 ff ff ff 4c 89 ef e8 72 eb ef fe e9 f3 fe ff ff e8 d8 82 ab fe 48 8b 3c 24 48 c7 c6 60 48 42 8a e8 48 ee dd fe <0f> 0b 66 0f 1f 44 00 00 55 41 57 41 56 41 55 41 54 53 48 83 ec 70
RSP: 0018:ffffc9000268fce0 EFLAGS: 00010246
RAX: b7e0109ab9129d00 RBX: ffff88806236f4d8 RCX: ffff88801d9e0000
RDX: 0000000000000000 RSI: 000000000000ffff RDI: 000000000000ffff
RBP: 000000000000007f R08: dffffc0000000000 R09: fffff520004d1e81
R10: fffff520004d1e81 R11: 1ffff920004d1e80 R12: ffff88806236f500
R13: ffffea00019cd774 R14: 1ffff1100c46dea0 R15: 1ffff1100c46dead
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f04315ce358 CR3: 000000006af75000 CR4: 00000000003506e0
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:2717 [inline]
 jfs_lazycommit+0x583/0xb20 fs/jfs/jfs_txnmgr.c:2767
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
Modules linked in:
---[ end trace d81b24d907a0f506 ]---
RIP: 0010:get_page include/linux/mm.h:1224 [inline]
RIP: 0010:put_metapage+0x278/0x280 fs/jfs/jfs_metapage.c:722
Code: 38 c1 0f 8c 00 ff ff ff 4c 89 ef e8 72 eb ef fe e9 f3 fe ff ff e8 d8 82 ab fe 48 8b 3c 24 48 c7 c6 60 48 42 8a e8 48 ee dd fe <0f> 0b 66 0f 1f 44 00 00 55 41 57 41 56 41 55 41 54 53 48 83 ec 70
RSP: 0018:ffffc9000268fce0 EFLAGS: 00010246
RAX: b7e0109ab9129d00 RBX: ffff88806236f4d8 RCX: ffff88801d9e0000
RDX: 0000000000000000 RSI: 000000000000ffff RDI: 000000000000ffff
RBP: 000000000000007f R08: dffffc0000000000 R09: fffff520004d1e81
R10: fffff520004d1e81 R11: 1ffff920004d1e80 R12: ffff88806236f500
R13: ffffea00019cd774 R14: 1ffff1100c46dea0 R15: 1ffff1100c46dead
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f04315ce358 CR3: 000000006af75000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400