BUG: Bad page state in process jfsCommit  pfn:2a995
page:ffffea0000aa6540 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1c pfn:0x2a995
flags: 0xfff08000002047(locked|referenced|uptodate|workingset|private|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff08000002047 dead000000000100 dead000000000122 0000000000000000
raw: 000000000000001c ffff88803129f4d8 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 18333, tgid 18331 (syz.4.4376), ts 611981475755, free_ts 608360818910
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x173/0x1a0 mm/page_alloc.c:2560
 prep_new_page mm/page_alloc.c:2567 [inline]
 get_page_from_freelist+0x206b/0x2180 mm/page_alloc.c:4358
 __alloc_pages+0x1ec/0x4f0 mm/page_alloc.c:5658
 folio_alloc+0x1c/0x60 mm/mempolicy.c:2292
 filemap_alloc_folio+0xdb/0x480 mm/filemap.c:999
 do_read_cache_folio+0x1b9/0x790 mm/filemap.c:3623
 do_read_cache_page+0x32/0x230 mm/filemap.c:3701
 read_mapping_page include/linux/pagemap.h:793 [inline]
 __get_metapage+0x319/0xfb0 fs/jfs/jfs_metapage.c:620
 diRead+0x6e6/0xbb0 fs/jfs/jfs_imap.c:367
 jfs_iget+0x89/0x3f0 fs/jfs/inode.c:35
 jfs_fill_super+0x6f8/0xab0 fs/jfs/super.c:580
 mount_bdev+0x28a/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+0x247/0xa40 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:1487 [inline]
 free_pcp_prepare mm/page_alloc.c:1537 [inline]
 free_unref_page_prepare+0x8e5/0x9e0 mm/page_alloc.c:3414
 free_unref_page+0x2e/0x3f0 mm/page_alloc.c:3509
 genradix_free_recurse+0x5d/0xa0 lib/generic-radix-tree.c:224
 sctp_stream_free+0xcb/0x100 net/sctp/stream.c:191
 sctp_association_free+0x269/0x7e0 net/sctp/associola.c:353
 __sctp_connect+0xa77/0xd80 net/sctp/socket.c:1251
 __sctp_setsockopt_connectx net/sctp/socket.c:1335 [inline]
 sctp_getsockopt_connectx3+0x2ee/0x470 net/sctp/socket.c:1420
 sctp_getsockopt+0x3ab/0x8a0 net/sctp/socket.c:8136
 __sys_getsockopt+0x1b0/0x230 net/socket.c:2332
 __do_sys_getsockopt net/socket.c:2347 [inline]
 __se_sys_getsockopt net/socket.c:2344 [inline]
 __x64_sys_getsockopt+0xb1/0xc0 net/socket.c:2344
 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: 1 PID: 107 Comm: jfsCommit Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
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:1537 [inline]
 free_unref_page_prepare+0x447/0x9e0 mm/page_alloc.c:3414
 free_unref_page+0x2e/0x3f0 mm/page_alloc.c:3509
 txUnlock+0x275/0xcb0 fs/jfs/jfs_txnmgr.c:933
 txLazyCommit fs/jfs/jfs_txnmgr.c:2683 [inline]
 jfs_lazycommit+0x588/0xa90 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:ffffea0000aa6540 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1c pfn:0x2a995
flags: 0xfff08000002047(locked|referenced|uptodate|workingset|private|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff08000002047 dead000000000100 dead000000000122 0000000000000000
raw: 000000000000001c ffff88803129f4d8 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 18333, tgid 18331 (syz.4.4376), ts 611981475755, free_ts 608360818910
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x173/0x1a0 mm/page_alloc.c:2560
 prep_new_page mm/page_alloc.c:2567 [inline]
 get_page_from_freelist+0x206b/0x2180 mm/page_alloc.c:4358
 __alloc_pages+0x1ec/0x4f0 mm/page_alloc.c:5658
 folio_alloc+0x1c/0x60 mm/mempolicy.c:2292
 filemap_alloc_folio+0xdb/0x480 mm/filemap.c:999
 do_read_cache_folio+0x1b9/0x790 mm/filemap.c:3623
 do_read_cache_page+0x32/0x230 mm/filemap.c:3701
 read_mapping_page include/linux/pagemap.h:793 [inline]
 __get_metapage+0x319/0xfb0 fs/jfs/jfs_metapage.c:620
 diRead+0x6e6/0xbb0 fs/jfs/jfs_imap.c:367
 jfs_iget+0x89/0x3f0 fs/jfs/inode.c:35
 jfs_fill_super+0x6f8/0xab0 fs/jfs/super.c:580
 mount_bdev+0x28a/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+0x247/0xa40 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:1487 [inline]
 free_pcp_prepare mm/page_alloc.c:1537 [inline]
 free_unref_page_prepare+0x8e5/0x9e0 mm/page_alloc.c:3414
 free_unref_page+0x2e/0x3f0 mm/page_alloc.c:3509
 genradix_free_recurse+0x5d/0xa0 lib/generic-radix-tree.c:224
 sctp_stream_free+0xcb/0x100 net/sctp/stream.c:191
 sctp_association_free+0x269/0x7e0 net/sctp/associola.c:353
 __sctp_connect+0xa77/0xd80 net/sctp/socket.c:1251
 __sctp_setsockopt_connectx net/sctp/socket.c:1335 [inline]
 sctp_getsockopt_connectx3+0x2ee/0x470 net/sctp/socket.c:1420
 sctp_getsockopt+0x3ab/0x8a0 net/sctp/socket.c:8136
 __sys_getsockopt+0x1b0/0x230 net/socket.c:2332
 __do_sys_getsockopt net/socket.c:2347 [inline]
 __se_sys_getsockopt net/socket.c:2344 [inline]
 __x64_sys_getsockopt+0xb1/0xc0 net/socket.c:2344
 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 05/09/2026
RIP: 0010:folio_get include/linux/mm.h:1146 [inline]
RIP: 0010:get_page include/linux/mm.h:1152 [inline]
RIP: 0010:put_metapage+0x244/0x330 fs/jfs/jfs_metapage.c:721
Code: 38 c1 0f 8c 31 ff ff ff 4c 89 ef e8 86 27 e1 fe e9 24 ff ff ff e8 cc ff 8f fe 48 8b 3c 24 48 c7 c6 80 02 c6 8a e8 fc 1d cb fe <0f> 0b 48 89 ee 48 81 e6 ff 0f 00 00 31 ff e8 89 03 90 fe 48 89 2c
RSP: 0018:ffffc900026c7cf0 EFLAGS: 00010246
RAX: 064dd99151e5da00 RBX: ffff88803129f4d8 RCX: 064dd99151e5da00
RDX: 0000000000000000 RSI: ffffffff8adee180 RDI: ffffffff8adee140
RBP: 000000000000007f R08: ffffffff8e200f6f R09: 1ffffffff1c401ed
R10: dffffc0000000000 R11: fffffbfff1c401ee R12: ffff88803129f500
R13: ffffea0000aa6574 R14: 1ffff11006253ea0 R15: 1ffff11006253ead
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd23f916c8 CR3: 000000007f556000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 txUnlock+0x426/0xcb0 fs/jfs/jfs_txnmgr.c:948
 txLazyCommit fs/jfs/jfs_txnmgr.c:2683 [inline]
 jfs_lazycommit+0x588/0xa90 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+0x244/0x330 fs/jfs/jfs_metapage.c:721
Code: 38 c1 0f 8c 31 ff ff ff 4c 89 ef e8 86 27 e1 fe e9 24 ff ff ff e8 cc ff 8f fe 48 8b 3c 24 48 c7 c6 80 02 c6 8a e8 fc 1d cb fe <0f> 0b 48 89 ee 48 81 e6 ff 0f 00 00 31 ff e8 89 03 90 fe 48 89 2c
RSP: 0018:ffffc900026c7cf0 EFLAGS: 00010246
RAX: 064dd99151e5da00 RBX: ffff88803129f4d8 RCX: 064dd99151e5da00
RDX: 0000000000000000 RSI: ffffffff8adee180 RDI: ffffffff8adee140
RBP: 000000000000007f R08: ffffffff8e200f6f R09: 1ffffffff1c401ed
R10: dffffc0000000000 R11: fffffbfff1c401ee R12: ffff88803129f500
R13: ffffea0000aa6574 R14: 1ffff11006253ea0 R15: 1ffff11006253ead
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005611180f8008 CR3: 000000007e907000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400