loop0: detected capacity change from 0 to 32768

 ... Log Wrap ... Log Wrap ... Log Wrap ...

blkno = 0, nblocks = 40
ERROR: (device loop0): dbFree: block to be freed is outside the map

BUG at fs/jfs/jfs_dmap.c:3123 assert(bitno < 32)
------------[ cut here ]------------
kernel BUG at fs/jfs/jfs_dmap.c:3123!
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 04/01/2014
RIP: 0010:dbFindBits+0x19e/0x1a0 fs/jfs/jfs_dmap.c:3123
Code: c0 fd 90 0f 0b e8 d2 0a 5f fe 48 c7 c7 60 54 0c 8c 48 c7 c6 a0 51 0c 8c ba 33 0c 00 00 48 c7 c1 a0 5c 0c 8c e8 a3 48 c0 fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41
RSP: 0018:ffffc90003e1f590 EFLAGS: 00010246
RAX: 0000000000000030 RBX: 0000000000000000 RCX: 1ea32e0f1ea55e00
RDX: ffffc9000f415000 RSI: 00000000000006a7 RDI: 00000000000006a8
RBP: 00000000ffffffff R08: ffffc90003e1f307 R09: 1ffff920007c3e60
R10: dffffc0000000000 R11: fffff520007c3e61 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000020
FS:  00007f45f83de6c0(0000) GS:ffff88808c815000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f45ec3ff000 CR3: 0000000042f90000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 dbAllocNear+0x23f/0x3c0 fs/jfs/jfs_dmap.c:1330
 dbAlloc+0x937/0xba0 fs/jfs/jfs_dmap.c:919
 ea_get+0x998/0x1300 fs/jfs/xattr.c:516
 __jfs_setxattr+0x5d5/0x1190 fs/jfs/xattr.c:727
 __jfs_set_acl fs/jfs/acl.c:83 [inline]
 jfs_set_acl+0x2c3/0x460 fs/jfs/acl.c:110
 set_posix_acl fs/posix_acl.c:955 [inline]
 vfs_set_acl+0x8a0/0xb50 fs/posix_acl.c:1134
 do_set_acl+0xf5/0x190 fs/posix_acl.c:1279
 do_setxattr fs/xattr.c:659 [inline]
 filename_setxattr+0x305/0x630 fs/xattr.c:690
 path_setxattrat+0x408/0x450 fs/xattr.c:734
 __do_sys_setxattr fs/xattr.c:768 [inline]
 __se_sys_setxattr fs/xattr.c:764 [inline]
 __x64_sys_setxattr+0xbc/0xe0 fs/xattr.c:764
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f45f759ce59
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:00007f45f83ddfe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007f45f7815fa0 RCX: 00007f45f759ce59
RDX: 00002000000003c0 RSI: 0000200000000080 RDI: 0000200000002a00
RBP: 00007f45f7632e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000024 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f45f7816038 R14: 00007f45f7815fa0 R15: 00007ffc4f3d7648
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dbFindBits+0x19e/0x1a0 fs/jfs/jfs_dmap.c:3123
Code: c0 fd 90 0f 0b e8 d2 0a 5f fe 48 c7 c7 60 54 0c 8c 48 c7 c6 a0 51 0c 8c ba 33 0c 00 00 48 c7 c1 a0 5c 0c 8c e8 a3 48 c0 fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41
RSP: 0018:ffffc90003e1f590 EFLAGS: 00010246
RAX: 0000000000000030 RBX: 0000000000000000 RCX: 1ea32e0f1ea55e00
RDX: ffffc9000f415000 RSI: 00000000000006a7 RDI: 00000000000006a8
RBP: 00000000ffffffff R08: ffffc90003e1f307 R09: 1ffff920007c3e60
R10: dffffc0000000000 R11: fffff520007c3e61 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000020
FS:  00007f45f83de6c0(0000) GS:ffff88808c815000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f45ec3ff000 CR3: 0000000042f90000 CR4: 0000000000352ef0