loop0: detected capacity change from 0 to 32768
read_mapping_page failed!
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: 7499 Comm: syz.0.357 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:txLock+0x1b79/0x1cb0 fs/jfs/jfs_txnmgr.c:662
Code: e9 6a f8 ff ff e8 47 87 75 fe 48 c7 c7 e0 93 a5 8b 48 c7 c6 d9 8f a5 8b ba 96 02 00 00 48 c7 c1 00 95 a5 8b e8 c8 21 dc fd 90 <0f> 0b e8 20 87 75 fe 48 c7 c7 c0 95 a5 8b e8 b4 21 dc fd 48 c7 c7
RSP: 0018:ffffc90004fa7540 EFLAGS: 00010246
RAX: 000000000000002b RBX: 0000000000000000 RCX: 5fb6657ed801d700
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc90004fa7678 R08: ffffc90004fa72c7 R09: 1ffff920009f4e58
R10: dffffc0000000000 R11: fffff520009f4e59 R12: 1ffff92000531400
R13: ffffc9000298a000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fd39efbd6c0(0000) GS:ffff888125e1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000b43000 CR3: 00000000534ad000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 dtSplitRoot+0x36f/0x16c0 fs/jfs/jfs_dtree.c:1927
 dtSplitUp fs/jfs/jfs_dtree.c:993 [inline]
 dtInsert+0xef8/0x5f40 fs/jfs/jfs_dtree.c:871
 jfs_mkdir+0x6ec/0xa70 fs/jfs/namei.c:270
 vfs_mkdir+0x512/0x5b0 fs/namei.c:5139
 do_mkdirat+0x276/0x4b0 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+0xec/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd39e18de97
Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 02 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd39efbce68 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007fd39efbcef0 RCX: 00007fd39e18de97
RDX: 00000000000001ff RSI: 0000200000000280 RDI: 00000000ffffff9c
RBP: 0000200000000040 R08: 00002000000007c0 R09: 0000000000000000
R10: 0000200000000040 R11: 0000000000000246 R12: 0000200000000280
R13: 00007fd39efbceb0 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:txLock+0x1b79/0x1cb0 fs/jfs/jfs_txnmgr.c:662
Code: e9 6a f8 ff ff e8 47 87 75 fe 48 c7 c7 e0 93 a5 8b 48 c7 c6 d9 8f a5 8b ba 96 02 00 00 48 c7 c1 00 95 a5 8b e8 c8 21 dc fd 90 <0f> 0b e8 20 87 75 fe 48 c7 c7 c0 95 a5 8b e8 b4 21 dc fd 48 c7 c7
RSP: 0018:ffffc90004fa7540 EFLAGS: 00010246
RAX: 000000000000002b RBX: 0000000000000000 RCX: 5fb6657ed801d700
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc90004fa7678 R08: ffffc90004fa72c7 R09: 1ffff920009f4e58
R10: dffffc0000000000 R11: fffff520009f4e59 R12: 1ffff92000531400
R13: ffffc9000298a000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fd39efbd6c0(0000) GS:ffff888125f1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c326e4b CR3: 00000000534ad000 CR4: 0000000000350ef0