ERROR: (device loop0): dbAllocBits: leaf page corrupt
ERROR: (device loop0): dbAllocBits: leaf page corrupt
ERROR: (device loop0): dbAllocBits: leaf page corrupt
ERROR: (device loop0): dbAllocBits: leaf page corrupt
ERROR: (device loop0): dbAllocBits: leaf page corrupt
ERROR: (device loop0): dbAllocBits: leaf page corrupt
------------[ cut here ]------------
WARNING: kernel/printk/printk_ringbuffer.c:1278 at get_data+0x48a/0x840 kernel/printk/printk_ringbuffer.c:1278, CPU#0: syz.0.17/6476
Modules linked in:
CPU: 0 UID: 0 PID: 6476 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:get_data+0x48a/0x840 kernel/printk/printk_ringbuffer.c:1278
Code: 83 c4 f8 48 b8 00 00 00 00 00 fc ff df 41 0f b6 04 07 84 c0 0f 85 ee 01 00 00 44 89 65 00 49 83 c5 08 eb 13 e8 f7 45 1f 00 90 <0f> 0b 90 eb 05 e8 ec 45 1f 00 45 31 ed 4c 89 e8 48 83 c4 28 5b 41
RSP: 0018:ffffc90002fd70c0 EFLAGS: 00010293
RAX: ffffffff81a238a9 RBX: 00003fffffffffff RCX: ffff88802c690000
RDX: 0000000000000000 RSI: 00003fffffffffff RDI: 0000000000000000
RBP: 0000000000000012 R08: 0000000000000ecf R09: 00000021c4b376a4
R10: 00000021c4b376a4 R11: 0000194c62000036 R12: 0000000000000012
R13: 0000000000000000 R14: ffffc90002fd7208 R15: 1ffffffff1bca6c2
FS:  00007f3735ade6c0(0000) GS:ffff888125ec5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563a47229ed8 CR3: 00000000255d2000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 copy_data kernel/printk/printk_ringbuffer.c:1857 [inline]
 prb_read kernel/printk/printk_ringbuffer.c:1966 [inline]
 _prb_read_valid+0x672/0xa90 kernel/printk/printk_ringbuffer.c:2143
 prb_read_valid+0x3c/0x60 kernel/printk/printk_ringbuffer.c:2215
 printk_get_next_message+0x15c/0x7b0 kernel/printk/printk.c:2978
 console_emit_next_record kernel/printk/printk.c:3062 [inline]
 console_flush_one_record kernel/printk/printk.c:3194 [inline]
 console_flush_all+0x4cc/0xb10 kernel/printk/printk.c:3268
 __console_flush_and_unlock kernel/printk/printk.c:3298 [inline]
 console_unlock+0xbb/0x190 kernel/printk/printk.c:3338
 vprintk_emit+0x4c5/0x590 kernel/printk/printk.c:2423
 _printk+0xcf/0x120 kernel/printk/printk.c:2448
 jfs_error+0x11b/0x2c0 fs/jfs/super.c:93
 dbAllocBits+0x4d1/0xa60 fs/jfs/jfs_dmap.c:2215
 dbAllocDmap fs/jfs/jfs_dmap.c:2034 [inline]
 dbAllocDmapLev+0x1bf/0x3c0 fs/jfs/jfs_dmap.c:1988
 dbAllocCtl+0x14a/0x9c0 fs/jfs/jfs_dmap.c:1825
 dbAllocAG+0x1e6/0xff0 fs/jfs/jfs_dmap.c:1353
 dbDiscardAG+0x2df/0x900 fs/jfs/jfs_dmap.c:1608
 jfs_ioc_trim+0x429/0x690 fs/jfs/jfs_discard.c:106
 jfs_ioctl+0x2b5/0x3d0 fs/jfs/ioctl.c:131
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 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: 0033:0x7f3734b8efc9
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:00007f3735ade038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f3734de6090 RCX: 00007f3734b8efc9
RDX: 0000200000000680 RSI: 00000000c0185879 RDI: 0000000000000005
RBP: 00007f3734c11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3734de6128 R14: 00007f3734de6090 R15: 00007ffdec05bb48
 </TASK>