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 PTI
CPU: 1 UID: 0 PID: 8973 Comm: syz.5.324 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:dbFindBits+0x19e/0x1a0
Code: c8 fd 90 0f 0b e8 02 d9 66 fe 48 c7 c7 60 b6 0b 8c 48 c7 c6 a0 b3 0b 8c ba 33 0c 00 00 48 c7 c1 a0 be 0b 8c e8 b3 c6 c8 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:ffffc90005aff330 EFLAGS: 00010246
RAX: 0000000000000030 RBX: 0000000000000000 RCX: ce67dbe94b427e00
RDX: ffffc90007892000 RSI: 0000000000034645 RDI: 0000000000034646
RBP: 00000000ffffffff R08: ffffc90005aff0a7 R09: 1ffff92000b5fe14
R10: dffffc0000000000 R11: fffff52000b5fe15 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000020
FS:  00007f81cb7936c0(0000) GS:ffff8882a9290000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558b5c1b1000 CR3: 0000000012472000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 dbAllocNear+0x244/0x3d0
 dbAlloc+0x936/0xba0
 extAlloc+0x57d/0x1020
 jfs_get_block+0x358/0xad0
 __block_write_begin_int+0x6c6/0x1910
 block_write_begin+0x8d/0x120
 jfs_write_begin+0x35/0x80
 generic_perform_write+0x2e2/0x8f0
 generic_file_write_iter+0x14a/0x680
 vfs_write+0x61d/0xb90
 __x64_sys_pwrite64+0x199/0x230
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f81ca99cdd9
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:00007f81cb793028 EFLAGS: 00000246 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007f81cac16090 RCX: 00007f81ca99cdd9
RDX: 0000000000000001 RSI: 0000200000000540 RDI: 0000000000000007
RBP: 00007f81caa32d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000008080c61 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f81cac16128 R14: 00007f81cac16090 R15: 00007ffc9a5ad5b8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dbFindBits+0x19e/0x1a0
Code: c8 fd 90 0f 0b e8 02 d9 66 fe 48 c7 c7 60 b6 0b 8c 48 c7 c6 a0 b3 0b 8c ba 33 0c 00 00 48 c7 c1 a0 be 0b 8c e8 b3 c6 c8 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:ffffc90005aff330 EFLAGS: 00010246
RAX: 0000000000000030 RBX: 0000000000000000 RCX: ce67dbe94b427e00
RDX: ffffc90007892000 RSI: 0000000000034645 RDI: 0000000000034646
RBP: 00000000ffffffff R08: ffffc90005aff0a7 R09: 1ffff92000b5fe14
R10: dffffc0000000000 R11: fffff52000b5fe15 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000020
FS:  00007f81cb7936c0(0000) GS:ffff8882a9290000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555798e9ce48 CR3: 0000000012472000 CR4: 00000000000006f0
