BUG at fs/jfs/jfs_txnmgr.c:933 assert(mp->nohomeok > 0) ------------[ cut here ]------------ kernel BUG at fs/jfs/jfs_txnmgr.c:933! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 108 Comm: jfsCommit Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:txUnlock+0xda1/0xdf0 fs/jfs/jfs_txnmgr.c:933 Code: c3 fd 90 0f 0b e8 ef 53 61 fe 48 c7 c7 a0 17 0c 8c 48 c7 c6 99 13 0c 8c ba a5 03 00 00 48 c7 c1 a0 24 0c 8c e8 e0 46 c3 fd 90 <0f> 0b e8 c8 53 61 fe 48 c7 c7 a0 17 0c 8c 48 c7 c6 99 13 0c 8c ba RSP: 0018:ffffc90001387c48 EFLAGS: 00010246 RAX: 0000000000000037 RBX: 0000000000001000 RCX: fc724befcc8abe00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc900010161b0 R08: ffffc900013879c7 R09: 1ffff92000270f38 R10: dffffc0000000000 R11: fffff52000270f39 R12: dffffc0000000000 R13: 1ffff11000061989 R14: ffff88800030cc48 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88808c888000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f831a91d218 CR3: 00000000125af000 CR4: 0000000000352ef0 Call Trace: txLazyCommit fs/jfs/jfs_txnmgr.c:2684 [inline] jfs_lazycommit+0x582/0xaa0 fs/jfs/jfs_txnmgr.c:2735 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: ---[ end trace 0000000000000000 ]---