BUG at fs/jfs/jfs_txnmgr.c:663 assert(last)
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kernel BUG at fs/jfs/jfs_txnmgr.c:663!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 14863 Comm: syz.4.2198 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:txLock+0x1bdb/0x1d10
Code: e9 c5 f7 ff ff e8 05 f8 55 fe 48 c7 c7 60 f7 4d 8c 48 c7 c6 59 f3 4d 8c ba 97 02 00 00 48 c7 c1 80 f8 4d 8c e8 96 00 b6 fd 90 <0f> 0b e8 de f7 55 fe 48 c7 c7 40 f9 4d 8c e8 82 00 b6 fd 48 c7 c7
RSP: 0018:ffffc900044a7200 EFLAGS: 00010246
RAX: 000000000000002b RBX: 0000000000000000 RCX: 8757dd354cf7e600
RDX: ffffc9002881e000 RSI: 000000000000d5bc RDI: 000000000000d5bd
RBP: ffffc900044a7330 R08: ffff88823c624713 R09: 1ffff110478c48e2
R10: dffffc0000000000 R11: ffffed10478c48e3 R12: 0000000000000000
R13: ffffc90002aca000 R14: 0000000000000000 R15: 1ffff92000559400
FS:  00007f0eba8da6c0(0000) GS:ffff8882a8cda000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000010000 CR3: 00000001695b0000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 diWrite+0x444/0x1f60
 txCommit+0x83a/0x54a0
 jfs_commit_inode+0x2ef/0x530
 extAlloc+0xc82/0x1010
 jfs_get_block+0x351/0xad0
 __block_write_begin_int+0x6c2/0x1900
 block_write_begin+0x8d/0x120
 jfs_write_begin+0x35/0x80
 generic_perform_write+0x2d5/0x8f0
 generic_file_write_iter+0xae/0x330
 vfs_write+0x612/0xba0
 ksys_write+0x150/0x270
 do_syscall_64+0x166/0x520
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0eb999e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f0eba8da028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0eb9c25fa0 RCX: 00007f0eb999e159
RDX: 0000000000032600 RSI: 0000200000000100 RDI: 0000000000000006
RBP: 00007f0eb9a3506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0eb9c26038 R14: 00007f0eb9c25fa0 R15: 00007ffe4efd7268
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:txLock+0x1bdb/0x1d10
Code: e9 c5 f7 ff ff e8 05 f8 55 fe 48 c7 c7 60 f7 4d 8c 48 c7 c6 59 f3 4d 8c ba 97 02 00 00 48 c7 c1 80 f8 4d 8c e8 96 00 b6 fd 90 <0f> 0b e8 de f7 55 fe 48 c7 c7 40 f9 4d 8c e8 82 00 b6 fd 48 c7 c7
RSP: 0018:ffffc900044a7200 EFLAGS: 00010246
RAX: 000000000000002b RBX: 0000000000000000 RCX: 8757dd354cf7e600
RDX: ffffc9002881e000 RSI: 000000000000d5bc RDI: 000000000000d5bd
RBP: ffffc900044a7330 R08: ffff88823c624713 R09: 1ffff110478c48e2
R10: dffffc0000000000 R11: ffffed10478c48e3 R12: 0000000000000000
R13: ffffc90002aca000 R14: 0000000000000000 R15: 1ffff92000559400
FS:  00007f0eba8da6c0(0000) GS:ffff8882a8cda000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000010000 CR3: 00000001695b0000 CR4: 00000000000006f0
