netlink: 40 bytes leftover after parsing attributes in process `syz.0.0'.
netlink: 8 bytes leftover after parsing attributes in process `syz.0.0'.
loop0: detected capacity change from 0 to 32768
loop0: detected capacity change from 32768 to 32767
BUG at fs/jfs/jfs_dmap.c:3070 assert(n < 4)
------------[ cut here ]------------
kernel BUG at fs/jfs/jfs_dmap.c:3070!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5334 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:dbFindLeaf+0x519/0x520 fs/jfs/jfs_dmap.c:3070
Code: e9 4e ff ff ff e8 17 94 5e fe 48 c7 c7 a0 59 2c 8c 48 c7 c6 e0 56 2c 8c ba fe 0b 00 00 48 c7 c1 c0 64 2c 8c e8 b8 2e bf fd 90 <0f> 0b 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000f66f598 EFLAGS: 00010246
RAX: 000000000000002b RBX: 00000000ffffffff RCX: af1f03950d52c500
RDX: ffffc9000ecc1000 RSI: 0000000000001d9a RDI: 0000000000001d9b
RBP: 0000000008ffff09 R08: ffffc9000f66f327 R09: 1ffff92001ecde64
R10: dffffc0000000000 R11: fffff52001ecde65 R12: 0000000000000000
R13: 0000000000000009 R14: 000000000000000c R15: 0000000000000155
FS:  00007f558fa016c0(0000) GS:ffff88808c53f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f55849ff000 CR3: 0000000011dce000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 dbAllocDmapLev+0x60/0x3b0 fs/jfs/jfs_dmap.c:2056
 dbAllocCtl+0x145/0x990 fs/jfs/jfs_dmap.c:1912
 dbAllocAG+0x1f4/0xf80 fs/jfs/jfs_dmap.c:1440
 dbAlloc+0x5ab/0xba0 fs/jfs/jfs_dmap.c:964
 dtSplitUp fs/jfs/jfs_dtree.c:979 [inline]
 dtInsert+0xb31/0x5cb0 fs/jfs/jfs_dtree.c:868
 jfs_create+0x730/0xae0 fs/jfs/namei.c:138
 vfs_create+0x2c4/0x450 fs/namei.c:4202
 filename_mknodat+0x3e8/0x660 fs/namei.c:5185
 __do_sys_mknod fs/namei.c:5222 [inline]
 __se_sys_mknod+0x3a/0x150 fs/namei.c:5219
 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: 0033:0x7f558eb9e019
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:00007f558fa00fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000085
RAX: ffffffffffffffda RBX: 00007f558ee25fa0 RCX: 00007f558eb9e019
RDX: 0000000000000701 RSI: 0000000000000000 RDI: 0000200000000000
RBP: 00007f558ec3500c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f558ee26038 R14: 00007f558ee25fa0 R15: 00007ffc7c9f1408
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dbFindLeaf+0x519/0x520 fs/jfs/jfs_dmap.c:3070
Code: e9 4e ff ff ff e8 17 94 5e fe 48 c7 c7 a0 59 2c 8c 48 c7 c6 e0 56 2c 8c ba fe 0b 00 00 48 c7 c1 c0 64 2c 8c e8 b8 2e bf fd 90 <0f> 0b 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000f66f598 EFLAGS: 00010246
RAX: 000000000000002b RBX: 00000000ffffffff RCX: af1f03950d52c500
RDX: ffffc9000ecc1000 RSI: 0000000000001d9a RDI: 0000000000001d9b
RBP: 0000000008ffff09 R08: ffffc9000f66f327 R09: 1ffff92001ecde64
R10: dffffc0000000000 R11: fffff52001ecde65 R12: 0000000000000000
R13: 0000000000000009 R14: 000000000000000c R15: 0000000000000155
FS:  00007f558fa016c0(0000) GS:ffff88808c53f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f558f9dfff8 CR3: 0000000011dce000 CR4: 0000000000352ef0