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] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 5873 Comm: syz.2.333 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : txLock+0x1694/0x1828 fs/jfs/jfs_txnmgr.c:662
lr : txLock+0x1694/0x1828 fs/jfs/jfs_txnmgr.c:662
sp : ffff800021937060
x29: ffff800021937090 x28: 1ffff00004013400 x27: 0000000000000048
x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000003
x23: ffff80002009a000 x22: ffff80002009a000 x21: 0000000000000002
x20: ffff80002009a0d8 x19: dfff800000000000 x18: 0000000000000000
x17: 0000000000000000 x16: ffff8000082d92bc x15: 0000000000000002
x14: 0000000000000001 x13: 1ffff00004326d74 x12: 0000000000080000
x11: 0000000000019711 x10: ffff8000276fa000 x9 : d4d15b826c9e6a00
x8 : d4d15b826c9e6a00 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff800021936b38 x4 : ffff800015304cc0 x3 : ffff80000a890350
x2 : ffff00019f531d10 x1 : 0000000100000000 x0 : 000000000000002b
Call trace:
 txLock+0x1694/0x1828 fs/jfs/jfs_txnmgr.c:662
 diWrite+0x350/0x11e4 fs/jfs/jfs_imap.c:654
 txCommit+0x5e0/0x3bf8 fs/jfs/jfs_txnmgr.c:1256
 jfs_commit_inode+0x274/0x498 fs/jfs/inode.c:114
 extAlloc+0xa14/0xdb8 fs/jfs/jfs_extent.c:172
 jfs_get_block+0x2c4/0x8c0 fs/jfs/inode.c:254
 __block_write_begin_int+0x350/0x1388 fs/buffer.c:1991
 __block_write_begin fs/buffer.c:2041 [inline]
 block_write_begin+0x98/0x11c fs/buffer.c:2102
 jfs_write_begin+0x44/0x88 fs/jfs/inode.c:310
 generic_perform_write+0x234/0x4f4 mm/filemap.c:3862
 __generic_file_write_iter+0x130/0x250 mm/filemap.c:3960
 generic_file_write_iter+0xb4/0x2b0 mm/filemap.c:3989
 call_write_iter include/linux/fs.h:2265 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x3ec/0x7f0 fs/read_write.c:584
 ksys_write+0x12c/0x224 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:646
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x130 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: d0043243 913c0063 528052c2 959c9ae7 (d4210000) 
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