BUG at fs/jfs/jfs_txnmgr.c:662 assert(last)
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kernel BUG at fs/jfs/jfs_txnmgr.c:662!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 6543 Comm: syz.3.104 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
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 [  151.791247][ T6543] Code: e9 6a f8 ff ff e8 d7 07 81 fe 48 c7 c7 a0 4a 24 8b 48 c7 c6 99 46 24 8b ba 96 02 00 00 48 c7 c1 a0 4b 24 8b e8 d8 96 e9 fd 90 <0f> 0b e8 b0 07 81 fe 48 c7 c7 60 4c 24 8b e8 c4 96 e9 fd 48 c7 c7
RSP: 0018:ffffc9000ceee920 EFLAGS: 00010246
RAX: 000000000000002b RBX: 0000000000000000 RCX: 34b61bd4ea8f0700
RDX: ffffc9000f001000 RSI: 0000000000015102 RDI: 0000000000015103
RBP: ffffc9000ceeea48 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff520019ddcc9 R12: 1ffff9200069d200
R13: ffffc900034e9000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f7ae0f956c0(0000) GS:ffff888126ef6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001fc8 CR3: 0000000023806000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 diWrite+0x444/0x1f40 fs/jfs/jfs_imap.c:654
 txCommit+0x852/0x5430 fs/jfs/jfs_txnmgr.c:1256
 jfs_commit_inode+0x2ef/0x530 fs/jfs/inode.c:114
 extAlloc+0xc3b/0xfb0 fs/jfs/jfs_extent.c:177
 jfs_get_block+0x346/0xab0 fs/jfs/inode.c:254
 get_more_blocks fs/direct-io.c:648 [inline]
 do_direct_IO fs/direct-io.c:936 [inline]
 __blockdev_direct_IO+0x157c/0x31f0 fs/direct-io.c:1243
 blockdev_direct_IO include/linux/fs.h:3511 [inline]
 jfs_direct_IO+0x11b/0x220 fs/jfs/inode.c:339
 generic_file_direct_write+0x1dc/0x3e0 mm/filemap.c:4188
 __generic_file_write_iter+0x120/0x240 mm/filemap.c:4357
 generic_file_write_iter+0x118/0x550 mm/filemap.c:4397
 iter_file_splice_write+0x97a/0x10f0 fs/splice.c:738
 do_splice_from fs/splice.c:938 [inline]
 direct_splice_actor+0x104/0x160 fs/splice.c:1161
 splice_direct_to_actor+0x5b3/0xcd0 fs/splice.c:1105
 do_splice_direct_actor fs/splice.c:1204 [inline]
 do_splice_direct+0x187/0x270 fs/splice.c:1230
 do_sendfile+0x4ec/0x7f0 fs/read_write.c:1370
 __do_sys_sendfile64 fs/read_write.c:1431 [inline]
 __se_sys_sendfile64+0x13e/0x190 fs/read_write.c:1417
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7ae2d4f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007f7ae0f95038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f7ae2fa6090 RCX: 00007f7ae2d4f749
RDX: 0000000000000000 RSI: 000000000000000a RDI: 0000000000000008
RBP: 00007f7ae2dd3f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7ae2fa6128 R14: 00007f7ae2fa6090 R15: 00007fffdcc0c948
 </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 d7 07 81 fe 48 c7 c7 a0 4a 24 8b 48 c7 c6 99 46 24 8b ba 96 02 00 00 48 c7 c1 a0 4b 24 8b e8 d8 96 e9 fd 90 <0f> 0b e8 b0 07 81 fe 48 c7 c7 60 4c 24 8b e8 c4 96 e9 fd 48 c7 c7
RSP: 0018:ffffc9000ceee920 EFLAGS: 00010246
RAX: 000000000000002b RBX: 0000000000000000 RCX: 34b61bd4ea8f0700
RDX: ffffc9000f001000 RSI: 0000000000015102 RDI: 0000000000015103
RBP: ffffc9000ceeea48 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff520019ddcc9 R12: 1ffff9200069d200
R13: ffffc900034e9000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f7ae0f956c0(0000) GS:ffff888126ef6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f43b516d000 CR3: 0000000023806000 CR4: 00000000003526f0