BUG at fs/jfs/jfs_dmap.c:3123 assert(bitno < 32)
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kernel BUG at fs/jfs/jfs_dmap.c:3123!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5331 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: c7 fd 90 0f 0b e8 e2 38 65 fe 48 c7 c7 20 cf 0b 8c 48 c7 c6 60 cc 0b 8c ba 33 0c 00 00 48 c7 c1 60 d7 0b 8c e8 73 12 c7 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:ffffc90006627370 EFLAGS: 00010246
RAX: 0000000000000030 RBX: 0000000000000000 RCX: e1725bd939165200
RDX: ffffc90020802000 RSI: 0000000000002039 RDI: 000000000000203a
RBP: 00000000ffffffff R08: ffffc900066270e7 R09: 1ffff92000cc4e1c
R10: dffffc0000000000 R11: fffff52000cc4e1d R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000020
FS:  00007f7abd3be6c0(0000) GS:ffff88808c87f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd614524e3a CR3: 0000000037e6f000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 dbAllocDmapLev+0x16b/0x3c0 fs/jfs/jfs_dmap.c:2072
 dbAllocCtl+0x14a/0x9c0 fs/jfs/jfs_dmap.c:1912
 dbAllocAG+0x1e6/0xf80 fs/jfs/jfs_dmap.c:1440
 dbAlloc+0x5ab/0xba0 fs/jfs/jfs_dmap.c:964
 dtSplitUp fs/jfs/jfs_dtree.c:979 [inline]
 dtInsert+0xb27/0x5cd0 fs/jfs/jfs_dtree.c:868
 jfs_rename+0x89d/0x1860 fs/jfs/namei.c:1226
 vfs_rename+0xa96/0xeb0 fs/namei.c:6054
 filename_renameat2+0x539/0x9c0 fs/namei.c:6172
 __do_sys_rename fs/namei.c:6216 [inline]
 __se_sys_rename+0x55/0x2c0 fs/namei.c:6212
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7abc59ce59
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:00007f7abd3bdfe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f7abc816090 RCX: 00007f7abc59ce59
RDX: 0000000000000000 RSI: 0000200000001900 RDI: 0000200000000140
RBP: 00007f7abc632d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7abc816128 R14: 00007f7abc816090 R15: 00007ffe9726c108
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dbFindBits+0x19e/0x1a0 fs/jfs/jfs_dmap.c:3123
Code: c7 fd 90 0f 0b e8 e2 38 65 fe 48 c7 c7 20 cf 0b 8c 48 c7 c6 60 cc 0b 8c ba 33 0c 00 00 48 c7 c1 60 d7 0b 8c e8 73 12 c7 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:ffffc90006627370 EFLAGS: 00010246
RAX: 0000000000000030 RBX: 0000000000000000 RCX: e1725bd939165200
RDX: ffffc90020802000 RSI: 0000000000002039 RDI: 000000000000203a
RBP: 00000000ffffffff R08: ffffc900066270e7 R09: 1ffff92000cc4e1c
R10: dffffc0000000000 R11: fffff52000cc4e1d R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000020
FS:  00007f7abd3be6c0(0000) GS:ffff88808c87f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7abd39cfe8 CR3: 0000000037e6f000 CR4: 0000000000352ef0