BUG: Bad page state in process jfsCommit  pfn:10e6ff
page:0000000067c46b8a refcount:0 mapcount:0 mapping:0000000000000000 index:0x1c pfn:0x10e6ff
flags: 0x5ffc00000002005(locked|uptodate|private|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000002005 dead000000000100 dead000000000122 0000000000000000
raw: 000000000000001c ffff0000d1fc79b0 00000000ffffffff 0000000000000000
page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set
Modules linked in:
CPU: 1 PID: 248 Comm: jfsCommit Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026
Call trace:
 dump_backtrace+0x0/0x458 arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 bad_page+0x188/0x1a8 mm/page_alloc.c:652
 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199
 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+0x738/0xa84 mm/page_alloc.c:3317
 free_unref_page+0x78/0x1f8 mm/page_alloc.c:3396
 __put_single_page mm/swap.c:98 [inline]
 __put_page+0xf8/0x130 mm/swap.c:129
 put_page include/linux/mm.h:1258 [inline]
 _metapage_homeok+0x138/0x27c fs/jfs/jfs_metapage.h:119
 txUnlock+0x220/0xb78 fs/jfs/jfs_txnmgr.c:933
 txLazyCommit fs/jfs/jfs_txnmgr.c:2717 [inline]
 jfs_lazycommit+0x44c/0x9b0 fs/jfs/jfs_txnmgr.c:2767
 kthread+0x374/0x454 kernel/kthread.c:334
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:856
page:0000000067c46b8a refcount:0 mapcount:0 mapping:0000000000000000 index:0x1c pfn:0x10e6ff
flags: 0x5ffc00000002005(locked|uptodate|private|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000002005 dead000000000100 dead000000000122 0000000000000000
raw: 000000000000001c ffff0000d1fc79b0 00000000ffffffff 0000000000000000
page dumped because: VM_BUG_ON_PAGE(((unsigned int) page_ref_count(page) + 127u <= 127u))
------------[ cut here ]------------
kernel BUG at include/linux/mm.h:1224!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 248 Comm: jfsCommit Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : get_page include/linux/mm.h:1224 [inline]
pc : put_metapage+0x280/0x2d4 fs/jfs/jfs_metapage.c:722
lr : get_page include/linux/mm.h:1224 [inline]
lr : put_metapage+0x280/0x2d4 fs/jfs/jfs_metapage.c:722
sp : ffff80001f097bc0
x29: ffff80001f097bc0 x28: ffff80001b03ac78 x27: 1fffe0001a3f8f3b
x26: 1fffe0001a3f8f48 x25: dfff800000000000 x24: 000000000000007f
x23: fffffc000339bff4 x22: fffffc000339bfc0 x21: ffff0000d1fc79d8
x20: ffff0000d1fc7a40 x19: ffff0000d1fc79b0 x18: 1fffe000341f4796
x17: 1fffe000341f4796 x16: ffff80001125a830 x15: ffff80001433ed40
x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000000 x9 : 3a882ddc820ae900
x8 : 3a882ddc820ae900 x7 : 0000000000000000 x6 : ffff800008247e40
x5 : 0000000000000000 x4 : 000000000000000c x3 : 0000000000000030
x2 : 0000000000000008 x1 : 0000000000000000 x0 : ffff700003e12f24
Call trace:
 get_page include/linux/mm.h:1224 [inline]
 put_metapage+0x280/0x2d4 fs/jfs/jfs_metapage.c:722
 txUnlock+0x398/0xb78 fs/jfs/jfs_txnmgr.c:948
 txLazyCommit fs/jfs/jfs_txnmgr.c:2717 [inline]
 jfs_lazycommit+0x44c/0x9b0 fs/jfs/jfs_txnmgr.c:2767
 kthread+0x374/0x454 kernel/kthread.c:334
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:856
Code: 9003f981 912f8021 aa1603e0 97bd6f47 (d4210000) 
---[ end trace 2795819e89ef2d99 ]---