loop0: detected capacity change from 0 to 32768
BUG at fs/jfs/jfs_txnmgr.c:662 assert(last)
------------[ cut here ]------------
kernel BUG at fs/jfs/jfs_txnmgr.c:662!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5345 Comm: syz.0.0 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:txLock+0x1b92/0x1cc0 fs/jfs/jfs_txnmgr.c:662
Code: e9 6a f8 ff ff e8 1e 9d 6f fe 48 c7 c7 20 f9 ca 8b 48 c7 c6 19 f5 ca 8b ba 96 02 00 00 48 c7 c1 40 fa ca 8b e8 cf 9d d4 fd 90 <0f> 0b e8 f7 9c 6f fe 48 c7 c7 00 fb ca 8b e8 bb 9d d4 fd 48 c7 c7
RSP: 0018:ffffc9000ddbf740 EFLAGS: 00010246
RAX: 000000000000002b RBX: 0000000000000000 RCX: f1df6b8c7ee76000
RDX: ffffc90020a02000 RSI: 0000000000002643 RDI: 0000000000002644
RBP: ffffc9000ddbf868 R08: ffffc9000ddbf4c7 R09: 1ffff92001bb7e98
R10: dffffc0000000000 R11: fffff52001bb7e99 R12: 1ffff920002a5200
R13: ffffc90001529000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fca799a56c0(0000) GS:ffff88808cf1d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fca799a3fa8 CR3: 00000000331c9000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 diWrite+0x444/0x1f40 fs/jfs/jfs_imap.c:654
 txCommit+0x869/0x5410 fs/jfs/jfs_txnmgr.c:1256
 jfs_mkdir+0x8e9/0xb00 fs/jfs/namei.c:290
 vfs_mkdir+0x511/0x5b0 fs/namei.c:5139
 do_mkdirat+0x27d/0x4b0 fs/namei.c:5173
 __do_sys_mkdirat fs/namei.c:5195 [inline]
 __se_sys_mkdirat fs/namei.c:5193 [inline]
 __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:5193
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fca78b99b97
Code: 00 66 90 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 db f7 ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 b8 02 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fca799a4e58 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007fca799a4ee0 RCX: 00007fca78b99b97
RDX: 00000000000001ff RSI: 00002000000000c0 RDI: 00000000ffffff9c
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00002000000000c0
R13: 00007fca799a4ea0 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:txLock+0x1b92/0x1cc0 fs/jfs/jfs_txnmgr.c:662
Code: e9 6a f8 ff ff e8 1e 9d 6f fe 48 c7 c7 20 f9 ca 8b 48 c7 c6 19 f5 ca 8b ba 96 02 00 00 48 c7 c1 40 fa ca 8b e8 cf 9d d4 fd 90 <0f> 0b e8 f7 9c 6f fe 48 c7 c7 00 fb ca 8b e8 bb 9d d4 fd 48 c7 c7
RSP: 0018:ffffc9000ddbf740 EFLAGS: 00010246
RAX: 000000000000002b RBX: 0000000000000000 RCX: f1df6b8c7ee76000
RDX: ffffc90020a02000 RSI: 0000000000002643 RDI: 0000000000002644
RBP: ffffc9000ddbf868 R08: ffffc9000ddbf4c7 R09: 1ffff92001bb7e98
R10: dffffc0000000000 R11: fffff52001bb7e99 R12: 1ffff920002a5200
R13: ffffc90001529000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fca799a56c0(0000) GS:ffff88808cf1d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fca799a3fa8 CR3: 00000000331c9000 CR4: 0000000000352ef0