BUG: Bad page state in process jfsCommit  pfn:7d9c7
page:ffffea0001f671c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1c pfn:0x7d9c7
flags: 0xfff0800000820d(locked|referenced|uptodate|workingset|private|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff0800000820d dead000000000100 dead000000000122 0000000000000000
raw: 000000000000001c ffff88801afddba0 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 11222, tgid 11221 (syz.7.1458), ts 337317611555, free_ts 337060217993
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x1c1/0x200 mm/page_alloc.c:1581
 prep_new_page mm/page_alloc.c:1588 [inline]
 get_page_from_freelist+0x1951/0x19e0 mm/page_alloc.c:3220
 __alloc_pages+0x1f0/0x460 mm/page_alloc.c:4500
 folio_alloc+0x1e/0x30 mm/mempolicy.c:2289
 filemap_alloc_folio+0xdf/0x490 mm/filemap.c:1004
 do_read_cache_folio+0x364/0x7d0 mm/filemap.c:3768
 do_read_cache_page+0x32/0x250 mm/filemap.c:3870
 read_mapping_page include/linux/pagemap.h:892 [inline]
 __get_metapage+0x31a/0xfa0 fs/jfs/jfs_metapage.c:620
 diRead+0x6d3/0xb90 fs/jfs/jfs_imap.c:367
 jfs_iget+0x90/0x440 fs/jfs/inode.c:35
 jfs_fill_super+0x712/0xad0 fs/jfs/super.c:580
 mount_bdev+0x221/0x2d0 fs/super.c:1643
 legacy_get_tree+0xea/0x180 fs/fs_context.c:662
 vfs_get_tree+0x8c/0x280 fs/super.c:1764
 do_new_mount+0x24b/0xa40 fs/namespace.c:3386
 do_mount fs/namespace.c:3726 [inline]
 __do_sys_mount fs/namespace.c:3935 [inline]
 __se_sys_mount+0x2e7/0x3d0 fs/namespace.c:3912
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1181 [inline]
 free_unref_page_prepare+0x7b2/0x8c0 mm/page_alloc.c:2365
 free_unref_page+0x32/0x2e0 mm/page_alloc.c:2458
 vfree+0x1a6/0x320 mm/vmalloc.c:2868
 delayed_vfree_work+0x55/0x80 mm/vmalloc.c:2788
 process_one_work kernel/workqueue.c:2653 [inline]
 process_scheduled_works+0xa5d/0x15d0 kernel/workqueue.c:2730
 worker_thread+0xa55/0xfc0 kernel/workqueue.c:2811
 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
Modules linked in:
CPU: 1 PID: 112 Comm: jfsCommit Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106
 bad_page+0x14b/0x170 mm/page_alloc.c:539
 free_page_is_bad mm/page_alloc.c:988 [inline]
 free_pages_prepare mm/page_alloc.c:1173 [inline]
 free_unref_page_prepare+0x85f/0x8c0 mm/page_alloc.c:2365
 free_unref_page+0x32/0x2e0 mm/page_alloc.c:2458
 txUnlock+0x27e/0xcb0 fs/jfs/jfs_txnmgr.c:933
 txLazyCommit fs/jfs/jfs_txnmgr.c:2683 [inline]
 jfs_lazycommit+0x56e/0xa70 fs/jfs/jfs_txnmgr.c:2733
 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:ffffea0001f671c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1c pfn:0x7d9c7
flags: 0xfff0800000820d(locked|referenced|uptodate|workingset|private|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff0800000820d dead000000000100 dead000000000122 0000000000000000
raw: 000000000000001c ffff88801afddba0 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 11222, tgid 11221 (syz.7.1458), ts 337317611555, free_ts 337060217993
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x1c1/0x200 mm/page_alloc.c:1581
 prep_new_page mm/page_alloc.c:1588 [inline]
 get_page_from_freelist+0x1951/0x19e0 mm/page_alloc.c:3220
 __alloc_pages+0x1f0/0x460 mm/page_alloc.c:4500
 folio_alloc+0x1e/0x30 mm/mempolicy.c:2289
 filemap_alloc_folio+0xdf/0x490 mm/filemap.c:1004
 do_read_cache_folio+0x364/0x7d0 mm/filemap.c:3768
 do_read_cache_page+0x32/0x250 mm/filemap.c:3870
 read_mapping_page include/linux/pagemap.h:892 [inline]
 __get_metapage+0x31a/0xfa0 fs/jfs/jfs_metapage.c:620
 diRead+0x6d3/0xb90 fs/jfs/jfs_imap.c:367
 jfs_iget+0x90/0x440 fs/jfs/inode.c:35
 jfs_fill_super+0x712/0xad0 fs/jfs/super.c:580
 mount_bdev+0x221/0x2d0 fs/super.c:1643
 legacy_get_tree+0xea/0x180 fs/fs_context.c:662
 vfs_get_tree+0x8c/0x280 fs/super.c:1764
 do_new_mount+0x24b/0xa40 fs/namespace.c:3386
 do_mount fs/namespace.c:3726 [inline]
 __do_sys_mount fs/namespace.c:3935 [inline]
 __se_sys_mount+0x2e7/0x3d0 fs/namespace.c:3912
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1181 [inline]
 free_unref_page_prepare+0x7b2/0x8c0 mm/page_alloc.c:2365
 free_unref_page+0x32/0x2e0 mm/page_alloc.c:2458
 vfree+0x1a6/0x320 mm/vmalloc.c:2868
 delayed_vfree_work+0x55/0x80 mm/vmalloc.c:2788
 process_one_work kernel/workqueue.c:2653 [inline]
 process_scheduled_works+0xa5d/0x15d0 kernel/workqueue.c:2730
 worker_thread+0xa55/0xfc0 kernel/workqueue.c:2811
 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
------------[ cut here ]------------
kernel BUG at include/linux/mm.h:1458!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 112 Comm: jfsCommit Tainted: G    B              syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:folio_get include/linux/mm.h:1458 [inline]
RIP: 0010:get_page include/linux/mm.h:1464 [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 78 d9 fe e9 25 ff ff ff e8 5d 3c 81 fe 48 8b 3c 24 48 c7 c6 80 07 04 8b e8 7d aa c1 fe <0f> 0b 4c 8b 2c 24 4c 89 ee 48 81 e6 ff 0f 00 00 31 ff e8 76 40 81
RSP: 0018:ffffc90002cd7cc0 EFLAGS: 00010246
RAX: 008ad6291f2caf00 RBX: ffff88801afddba0 RCX: 008ad6291f2caf00
RDX: 0000000000000000 RSI: ffffffff8b1c8980 RDI: ffffffff8b1c8940
RBP: 000000000000007f R08: ffffffff8e8b02af R09: 1ffffffff1d16055
R10: dffffc0000000000 R11: fffffbfff1d16056 R12: ffff88801afddbc8
R13: ffffea0001f671f4 R14: 1ffff110035fbb79 R15: 1ffff110035fbb86
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557b8eba28 CR3: 000000000cf32000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 txUnlock+0x427/0xcb0 fs/jfs/jfs_txnmgr.c:948
 txLazyCommit fs/jfs/jfs_txnmgr.c:2683 [inline]
 jfs_lazycommit+0x56e/0xa70 fs/jfs/jfs_txnmgr.c:2733
 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:1458 [inline]
RIP: 0010:get_page include/linux/mm.h:1464 [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 78 d9 fe e9 25 ff ff ff e8 5d 3c 81 fe 48 8b 3c 24 48 c7 c6 80 07 04 8b e8 7d aa c1 fe <0f> 0b 4c 8b 2c 24 4c 89 ee 48 81 e6 ff 0f 00 00 31 ff e8 76 40 81
RSP: 0018:ffffc90002cd7cc0 EFLAGS: 00010246
RAX: 008ad6291f2caf00 RBX: ffff88801afddba0 RCX: 008ad6291f2caf00
RDX: 0000000000000000 RSI: ffffffff8b1c8980 RDI: ffffffff8b1c8940
RBP: 000000000000007f R08: ffffffff8e8b02af R09: 1ffffffff1d16055
R10: dffffc0000000000 R11: fffffbfff1d16056 R12: ffff88801afddbc8
R13: ffffea0001f671f4 R14: 1ffff110035fbb79 R15: 1ffff110035fbb86
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557b8eba28 CR3: 00000000308dd000 CR4: 00000000003506f0