loop4: 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!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4468 Comm: syz.4.22 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : txLock+0x1714/0x18ac fs/jfs/jfs_txnmgr.c:662
lr : txLock+0x1714/0x18ac fs/jfs/jfs_txnmgr.c:662
sp : ffff8000215076e0
x29: ffff800021507710 x28: 0000000000000048 x27: 0000000000008001
x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000005
x23: ffff80002024a000 x22: ffff80002024a000 x21: dfff800000000000
x20: ffff80002024a168 x19: 1ffff00004049400 x18: 1fffe00033e6db7e
x17: ffff8000153bd000 x16: ffff800011bb65f8 x15: 0000000040000000
x14: 0000000000000001 x13: 1ffff000042a0e44 x12: 0000000000080000
x11: 000000000002c9a4 x10: ffff80002630c000 x9 : 20abb3a99d829d00
x8 : 20abb3a99d829d00 x7 : ffff80000825ab20 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : ffff80000a92ec3c
x2 : ffff00019f36dd10 x1 : 0000000100000000 x0 : 000000000000002b
Call trace:
 txLock+0x1714/0x18ac fs/jfs/jfs_txnmgr.c:662
 diWrite+0x354/0x1268 fs/jfs/jfs_imap.c:654
 txCommit+0x608/0x3d34 fs/jfs/jfs_txnmgr.c:1256
 jfs_mkdir+0x730/0x8fc fs/jfs/namei.c:290
 vfs_mkdir+0x314/0x4d8 fs/namei.c:4157
 do_mkdirat+0x1b8/0x3ec fs/namei.c:4182
 __do_sys_mkdirat fs/namei.c:4197 [inline]
 __se_sys_mkdirat fs/namei.c:4195 [inline]
 __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4195
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Code: 90043cc3 910a0063 528052c2 979c89b7 (d4210000) 
---[ end trace 0000000000000000 ]---