BUG at fs/jfs/jfs_txnmgr.c:931 assert(mp->nohomeok > 0) ------------[ cut here ]------------ kernel BUG at fs/jfs/jfs_txnmgr.c:931! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 111 Comm: jfsCommit Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:txUnlock+0xdaf/0xdf0 fs/jfs/jfs_txnmgr.c:931 Code: e4 fd 90 0f 0b e8 81 d2 7c fe 48 c7 c7 20 23 c4 8b 48 c7 c6 19 1f c4 8b ba a3 03 00 00 48 c7 c1 20 30 c4 8b e8 72 c4 e4 fd 90 <0f> 0b e8 5a d2 7c fe 48 c7 c7 20 23 c4 8b 48 c7 c6 19 1f c4 8b ba RSP: 0018:ffffc90002d57bc8 EFLAGS: 00010246 RAX: 0000000000000037 RBX: 0000000000001000 RCX: 4dadeb04ecbd7800 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc900028ca120 R08: ffffc90002d578e7 R09: 1ffff920005aaf1c R10: dffffc0000000000 R11: fffff520005aaf1d R12: dffffc0000000000 R13: 1ffff11008bf9c91 R14: ffff888045fce488 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888125c12000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007faff3f156c0 CR3: 000000000df36000 CR4: 0000000000350ef0 Call Trace: txLazyCommit fs/jfs/jfs_txnmgr.c:2682 [inline] jfs_lazycommit+0x584/0xa90 fs/jfs/jfs_txnmgr.c:2733 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x439/0x7d0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:txUnlock+0xdaf/0xdf0 fs/jfs/jfs_txnmgr.c:931 Code: e4 fd 90 0f 0b e8 81 d2 7c fe 48 c7 c7 20 23 c4 8b 48 c7 c6 19 1f c4 8b ba a3 03 00 00 48 c7 c1 20 30 c4 8b e8 72 c4 e4 fd 90 <0f> 0b e8 5a d2 7c fe 48 c7 c7 20 23 c4 8b 48 c7 c6 19 1f c4 8b ba RSP: 0018:ffffc90002d57bc8 EFLAGS: 00010246 RAX: 0000000000000037 RBX: 0000000000001000 RCX: 4dadeb04ecbd7800 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc900028ca120 R08: ffffc90002d578e7 R09: 1ffff920005aaf1c R10: dffffc0000000000 R11: fffff520005aaf1d R12: dffffc0000000000 R13: 1ffff11008bf9c91 R14: ffff888045fce488 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888125c12000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffbebb6ff8 CR3: 000000005745d000 CR4: 0000000000350ef0