list_add corruption. next is NULL. ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:26! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 93 Comm: jfsCommit Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 624000c5 (nZCv daIF +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : __list_add_valid+0xdc/0x110 lib/list_debug.c:25 lr : __list_add_valid+0xdc/0x110 lib/list_debug.c:25 sp : ffff8000204e7bd0 x29: ffff8000204e7bd0 x28: dfff800000000000 x27: 0000000080000000 x26: 0000000000000000 x25: 0000000000000000 x24: ffff0000d466b3f0 x23: ffff80001fe39230 x22: 1ffff00003fc7246 x21: ffff80001fe39220 x20: ffff0000d466b400 x19: 0000000000000000 x18: ffff800011b7bf60 x17: 0000000000000000 x16: ffff8000082ef028 x15: 0000000000000000 x14: 0000000000000001 x13: 1ffff0000409cee0 x12: 0000000000ff0100 x11: ff00800008311710 x10: 0000000000000000 x9 : a515b0301a93c200 x8 : a515b0301a93c200 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000204e7698 x4 : ffff8000152e4cc0 x3 : ffff80000a88a6b0 x2 : ffff00019f555d10 x1 : 0000000100000001 x0 : 0000000000000022 Call trace: __list_add_valid+0xdc/0x110 lib/list_debug.c:25 __list_add include/linux/list.h:69 [inline] list_add include/linux/list.h:88 [inline] diUpdatePMap+0x4e8/0xb8c fs/jfs/jfs_imap.c:2831 txUpdateMap+0x5e4/0x794 fs/jfs/jfs_txnmgr.c:2357 txLazyCommit fs/jfs/jfs_txnmgr.c:2665 [inline] jfs_lazycommit+0x354/0x908 fs/jfs/jfs_txnmgr.c:2733 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850 Code: d4210000 f003bc80 91180000 95c1a482 (d4210000) ---[ end trace 0000000000000000 ]---