loop2: detected capacity change from 0 to 32768
BUG at fs/jfs/jfs_dmap.c:708 assert(nblocks > 0)
------------[ cut here ]------------
kernel BUG at fs/jfs/jfs_dmap.c:708!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 4492 Comm: syz-executor.2 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
RIP: 0010:dbAlloc+0xc7d/0xc90 fs/jfs/jfs_dmap.c:708
Code: 26 07 0f 0b e8 b4 6f 89 fe 48 c7 c7 80 96 cd 8a 48 c7 c6 40 a4 cd 8a ba c4 02 00 00 48 c7 c1 c0 96 cd 8a 31 c0 e8 bf ff 26 07 <0f> 0b e8 ec f7 28 07 66 2e 0f 1f 84 00 00 00 00 00 66 90 55 41 57
RSP: 0018:ffffc9000b547440 EFLAGS: 00010246
RAX: 0000000000000030 RBX: ffff8880758cde10 RCX: cdd0eb991bd5ab00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc9000b547550 R08: ffffffff816aa79d R09: ffffed10173667f1
R10: ffffed10173667f1 R11: 1ffff110173667f0 R12: 0000000003000003
R13: 0000000000000000 R14: 0000000000000000 R15: 1ffff920016a8e94
FS:  00007f7c7b0c5700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efc372e5000 CR3: 000000007f112000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ea_get+0x916/0x1290 fs/jfs/xattr.c:514
 __jfs_getxattr+0xc4/0x400 fs/jfs/xattr.c:807
 jfs_get_acl+0x70/0x140 fs/jfs/acl.c:38
 get_acl+0x157/0x260 fs/posix_acl.c:152
 check_acl+0x35/0x150 fs/namei.c:306
 acl_permission_check fs/namei.c:351 [inline]
 generic_permission+0x388/0x4e0 fs/namei.c:404
 do_inode_permission fs/namei.c:465 [inline]
 inode_permission+0xa1/0x450 fs/namei.c:525
 may_open+0x2a4/0x400 fs/namei.c:3185
 do_open fs/namei.c:3555 [inline]
 path_openat+0x24a2/0x2df0 fs/namei.c:3691
 do_filp_open+0x264/0x4f0 fs/namei.c:3718
 do_sys_openat2+0x124/0x4e0 fs/open.c:1310
 do_sys_open fs/open.c:1326 [inline]
 __do_sys_creat fs/open.c:1402 [inline]
 __se_sys_creat fs/open.c:1396 [inline]
 __x64_sys_creat+0x11f/0x160 fs/open.c:1396
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f7c79e8b5a9
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7c7b0c5168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007f7c79fabf80 RCX: 00007f7c79e8b5a9
RDX: 0000000000000000 RSI: 0000000000000022 RDI: 00000000200001c0
RBP: 00007f7c79ee6580 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffde021fc6f R14: 00007f7c7b0c5300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dbAlloc+0xc7d/0xc90 fs/jfs/jfs_dmap.c:708
Code: 26 07 0f 0b e8 b4 6f 89 fe 48 c7 c7 80 96 cd 8a 48 c7 c6 40 a4 cd 8a ba c4 02 00 00 48 c7 c1 c0 96 cd 8a 31 c0 e8 bf ff 26 07 <0f> 0b e8 ec f7 28 07 66 2e 0f 1f 84 00 00 00 00 00 66 90 55 41 57
RSP: 0018:ffffc9000b547440 EFLAGS: 00010246
RAX: 0000000000000030 RBX: ffff8880758cde10 RCX: cdd0eb991bd5ab00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc9000b547550 R08: ffffffff816aa79d R09: ffffed10173667f1
R10: ffffed10173667f1 R11: 1ffff110173667f0 R12: 0000000003000003
R13: 0000000000000000 R14: 0000000000000000 R15: 1ffff920016a8e94
FS:  00007f7c7b0c5700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c022ba4fc8 CR3: 000000007f112000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400