loop0: detected capacity change from 0 to 32768
ERROR: (device loop0): dbAdjCtl: the maximum free buddy is not the old root
ERROR: (device loop0): remounting filesystem as read-only
ERROR: (device loop0): xtSearch: xt_getpage: xtree page corrupt
ERROR: (device loop0): remounting filesystem as read-only
xtLookup: xtSearch returned -5
ERROR: (device loop0): xtSearch: xt_getpage: xtree page corrupt
ERROR: (device loop0): xtTruncate: xt_getpage: xtree page corrupt
BUG at fs/jfs/jfs_txnmgr.c:528 assert(tblk->next == 0)
------------[ cut here ]------------
kernel BUG at fs/jfs/jfs_txnmgr.c:528!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5329 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:txEnd+0x51f/0x530 fs/jfs/jfs_txnmgr.c:528
Code: e9 cc fe ff ff e8 d1 b1 79 fe 48 c7 c7 60 94 84 8b 48 c7 c6 59 90 84 8b ba 10 02 00 00 48 c7 c1 a0 94 84 8b e8 42 b6 e2 fd 90 <0f> 0b 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90
RSP: 0018:ffffc9000d40f3a0 EFLAGS: 00010246
RAX: 0000000000000036 RBX: ffff888052840800 RCX: a04e02dbc465a200
RDX: ffffc9000dfea000 RSI: 00000000000fffff RDI: 0000000000100000
RBP: ffffc900013fa102 R08: ffff88801fe24293 R09: 1ffff11003fc4852
R10: dffffc0000000000 R11: ffffed1003fc4853 R12: 1ffff9200027f425
R13: dffffc0000000000 R14: ffffc900013fa128 R15: 0000000000000003
FS:  00007f0b04deb6c0(0000) GS:ffff88808d967000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000001d8000 CR3: 000000004291a000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 jfs_truncate_nolock+0x2b6/0x340 fs/jfs/inode.c:393
 jfs_truncate fs/jfs/inode.c:414 [inline]
 jfs_write_failed+0x119/0x190 fs/jfs/inode.c:289
 jfs_direct_IO+0x1f4/0x220 fs/jfs/inode.c:344
 generic_file_direct_write+0x1db/0x3e0 mm/filemap.c:4109
 __generic_file_write_iter+0x11d/0x230 mm/filemap.c:4278
 generic_file_write_iter+0x117/0x550 mm/filemap.c:4318
 iter_file_splice_write+0x975/0x10e0 fs/splice.c:738
 do_splice_from fs/splice.c:938 [inline]
 direct_splice_actor+0x101/0x160 fs/splice.c:1161
 splice_direct_to_actor+0x5a5/0xcc0 fs/splice.c:1105
 do_splice_direct_actor fs/splice.c:1204 [inline]
 do_splice_direct+0x181/0x270 fs/splice.c:1230
 do_sendfile+0x4da/0x7e0 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/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0b03f8eec9
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:00007f0b04deb038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f0b041e5fa0 RCX: 00007f0b03f8eec9
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000007
RBP: 00007f0b04011f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0b041e6038 R14: 00007f0b041e5fa0 R15: 00007fff7f69a3d8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:txEnd+0x51f/0x530 fs/jfs/jfs_txnmgr.c:528
Code: e9 cc fe ff ff e8 d1 b1 79 fe 48 c7 c7 60 94 84 8b 48 c7 c6 59 90 84 8b ba 10 02 00 00 48 c7 c1 a0 94 84 8b e8 42 b6 e2 fd 90 <0f> 0b 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90
RSP: 0018:ffffc9000d40f3a0 EFLAGS: 00010246
RAX: 0000000000000036 RBX: ffff888052840800 RCX: a04e02dbc465a200
RDX: ffffc9000dfea000 RSI: 00000000000fffff RDI: 0000000000100000
RBP: ffffc900013fa102 R08: ffff88801fe24293 R09: 1ffff11003fc4852
R10: dffffc0000000000 R11: ffffed1003fc4853 R12: 1ffff9200027f425
R13: dffffc0000000000 R14: ffffc900013fa128 R15: 0000000000000003
FS:  00007f0b04deb6c0(0000) GS:ffff88808d967000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000001d8000 CR3: 000000004291a000 CR4: 0000000000352ef0