BUG at fs/jfs/jfs_txnmgr.c:662 assert(last)
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kernel BUG at fs/jfs/jfs_txnmgr.c:662!
Internal error: Oops - BUG: 00000000f2000800 [#1]  SMP
Modules linked in:
CPU: 0 UID: 0 PID: 7663 Comm: syz.1.172 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : txLock+0x1604/0x17a8 fs/jfs/jfs_txnmgr.c:662
lr : txLock+0x1604/0x17a8 fs/jfs/jfs_txnmgr.c:662
sp : ffff8000a30774a0
x29: ffff8000a30774c0 x28: 1ffff000136c4800 x27: 0000000000000048
x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000003
x23: ffff80009b624000 x22: ffff80009b624000 x21: 0000000000000001
x20: ffff80009b6240d8 x19: dfff800000000000 x18: 00000000ffffffff
x17: ffff800093303000 x16: ffff800082debf80 x15: 0000000000000001
x14: 1ffff0001460ee10 x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000080000 x10: 0000000000012549 x9 : 44a648677e86e200
x8 : 44a648677e86e200 x7 : ffff800080565240 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000807d6930
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 000000000000002b
Call trace:
 txLock+0x1604/0x17a8 fs/jfs/jfs_txnmgr.c:662 (P)
 dtSplitRoot+0x2c0/0x12f4 fs/jfs/jfs_dtree.c:1927
 dtSplitUp fs/jfs/jfs_dtree.c:993 [inline]
 dtInsert+0xba0/0x49c0 fs/jfs/jfs_dtree.c:871
 jfs_mkdir+0x5a4/0x8b4 fs/jfs/namei.c:270
 vfs_mkdir+0x284/0x424 fs/namei.c:4453
 do_mkdirat+0x1f8/0x4c8 fs/namei.c:4486
 __do_sys_mkdirat fs/namei.c:4503 [inline]
 __se_sys_mkdirat fs/namei.c:4501 [inline]
 __arm64_sys_mkdirat+0x8c/0xa4 fs/namei.c:4501
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:746
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
Code: b004b063 91138063 528052c2 9792de64 (d4210000) 
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