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
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:529 assert(tblk->next == 0)
------------[ cut here ]------------
kernel BUG at fs/jfs/jfs_txnmgr.c:529!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5338 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 04/01/2014
RIP: 0010:txEnd+0x51f/0x530 fs/jfs/jfs_txnmgr.c:529
Code: e9 cc fe ff ff e8 f1 b1 6f fe 48 c7 c7 e0 a7 c5 8b 48 c7 c6 d9 a3 c5 8b ba 11 02 00 00 48 c7 c1 20 a8 c5 8b e8 82 c5 d4 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:ffffc9000e5373a0 EFLAGS: 00010246
RAX: 0000000000000036 RBX: ffff888041d04800 RCX: f256372571f8da00
RDX: ffffc90020802000 RSI: 00000000000fffff RDI: 0000000000100000
RBP: ffffc9000139afe2 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1c3ae40 R12: 1ffff92000273601
R13: dffffc0000000000 R14: ffffc9000139b008 R15: 000000000000003d
FS:  00007fa53b2116c0(0000) GS:ffff88808cfff000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5bb637df80 CR3: 000000001fce9000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 jfs_truncate_nolock+0x2b6/0x340 fs/jfs/inode.c:399
 jfs_truncate fs/jfs/inode.c:420 [inline]
 jfs_write_failed+0x119/0x190 fs/jfs/inode.c:295
 jfs_direct_IO+0x1f4/0x220 fs/jfs/inode.c:350
 generic_file_direct_write+0x1db/0x3e0 mm/filemap.c:4248
 __generic_file_write_iter+0x11d/0x230 mm/filemap.c:4417
 generic_file_write_iter+0x14a/0x680 mm/filemap.c:4457
 iter_file_splice_write+0x99b/0x1100 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+0x53a/0xc70 fs/splice.c:1105
 do_splice_direct_actor fs/splice.c:1204 [inline]
 do_splice_direct+0x195/0x290 fs/splice.c:1230
 do_sendfile+0x535/0x7c0 fs/read_write.c:1370
 __do_sys_sendfile64 fs/read_write.c:1431 [inline]
 __se_sys_sendfile64+0x144/0x1a0 fs/read_write.c:1417
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa53a39acb9
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:00007fa53b211028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fa53a615fa0 RCX: 00007fa53a39acb9
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007fa53a408bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe85 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa53a616038 R14: 00007fa53a615fa0 R15: 00007ffe63c13c38
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:txEnd+0x51f/0x530 fs/jfs/jfs_txnmgr.c:529
Code: e9 cc fe ff ff e8 f1 b1 6f fe 48 c7 c7 e0 a7 c5 8b 48 c7 c6 d9 a3 c5 8b ba 11 02 00 00 48 c7 c1 20 a8 c5 8b e8 82 c5 d4 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:ffffc9000e5373a0 EFLAGS: 00010246
RAX: 0000000000000036 RBX: ffff888041d04800 RCX: f256372571f8da00
RDX: ffffc90020802000 RSI: 00000000000fffff RDI: 0000000000100000
RBP: ffffc9000139afe2 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1c3ae40 R12: 1ffff92000273601
R13: dffffc0000000000 R14: ffffc9000139b008 R15: 000000000000003d
FS:  00007fa53b2116c0(0000) GS:ffff88808cfff000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5bb637df80 CR3: 000000001fce9000 CR4: 0000000000352ef0