BUG at fs/jfs/jfs_txnmgr.c:663 assert(last)
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kernel BUG at fs/jfs/jfs_txnmgr.c:663!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 6998 Comm: syz.2.149 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:txLock+0x1bdb/0x1d10 fs/jfs/jfs_txnmgr.c:663
Code: e9 c5 f7 ff ff e8 25 53 6b fe 48 c7 c7 e0 99 6b 8b 48 c7 c6 d9 95 6b 8b ba 97 02 00 00 48 c7 c1 00 9b 6b 8b e8 b6 d7 cd fd 90 <0f> 0b e8 fe 52 6b fe 48 c7 c7 c0 9b 6b 8b e8 a2 d7 cd fd 48 c7 c7
RSP: 0000:ffffc9000800f560 EFLAGS: 00010246
RAX: 000000000000002b RBX: 0000000000000000 RCX: eac0df71dafe2600
RDX: ffffc90011254000 RSI: 0000000000002959 RDI: 000000000000295a
RBP: ffffc9000800f6a0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52001001e5d R12: 0000000000000000
R13: ffffc90003442000 R14: 0000000000000000 R15: 1ffff92000688400
FS:  00007fad679456c0(0000) GS:ffff888126391000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6447e87000 CR3: 0000000058b4a000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 dtSplitRoot+0x38d/0x1900 fs/jfs/jfs_dtree.c:1924
 dtSplitUp fs/jfs/jfs_dtree.c:990 [inline]
 dtInsert+0xedd/0x5cb0 fs/jfs/jfs_dtree.c:868
 jfs_mkdir+0x76b/0xb00 fs/jfs/namei.c:271
 vfs_mkdir+0x402/0x620 fs/namei.c:5272
 filename_mkdirat+0x289/0x520 fs/namei.c:5305
 __do_sys_mkdirat fs/namei.c:5326 [inline]
 __se_sys_mkdirat+0x35/0x150 fs/namei.c:5323
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fad6970bcc7
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:00007fad67944e58 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007fad67944ee0 RCX: 00007fad6970bcc7
RDX: 00000000000001ff RSI: 0000200000000800 RDI: 00000000ffffff9c
RBP: 0000200000000080 R08: 0000200000000140 R09: 0000000000000000
R10: 0000200000000080 R11: 0000000000000246 R12: 0000200000000800
R13: 00007fad67944ea0 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:txLock+0x1bdb/0x1d10 fs/jfs/jfs_txnmgr.c:663
Code: e9 c5 f7 ff ff e8 25 53 6b fe 48 c7 c7 e0 99 6b 8b 48 c7 c6 d9 95 6b 8b ba 97 02 00 00 48 c7 c1 00 9b 6b 8b e8 b6 d7 cd fd 90 <0f> 0b e8 fe 52 6b fe 48 c7 c7 c0 9b 6b 8b e8 a2 d7 cd fd 48 c7 c7
RSP: 0000:ffffc9000800f560 EFLAGS: 00010246
RAX: 000000000000002b RBX: 0000000000000000 RCX: eac0df71dafe2600
RDX: ffffc90011254000 RSI: 0000000000002959 RDI: 000000000000295a
RBP: ffffc9000800f6a0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52001001e5d R12: 0000000000000000
R13: ffffc90003442000 R14: 0000000000000000 R15: 1ffff92000688400
FS:  00007fad679456c0(0000) GS:ffff888126391000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6447ee4000 CR3: 0000000058b4a000 CR4: 00000000003526f0