BUG at fs/jfs/jfs_dmap.c:3036 assert(bitno < 32)
------------[ cut here ]------------
kernel BUG at fs/jfs/jfs_dmap.c:3036!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 41 Comm: kworker/u10:2 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
Workqueue: writeback wb_workfn (flush-7:4)
RIP: 0010:dbFindBits+0x19e/0x1a0
Code: ce fd 90 0f 0b e8 82 4f 6c fe 48 c7 c7 20 50 0b 8c 48 c7 c6 60 4d 0b 8c ba dc 0b 00 00 48 c7 c1 60 58 0b 8c e8 03 76 ce 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:ffffc90000b16bb0 EFLAGS: 00010246
RAX: 0000000000000030 RBX: 0000000000000000 RCX: 24d62f6cf0cccc00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 00000000ffffffff R08: ffffc90000b16927 R09: 1ffff92000162d24
R10: dffffc0000000000 R11: fffff52000162d25 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000020
FS:  0000000000000000(0000) GS:ffff8882a9462000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555851a3a28 CR3: 000000011e506000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 dbAllocNear+0x244/0x3d0
 dbAlloc+0x936/0xba0
 extAlloc+0x57d/0x1020
 jfs_get_block+0x358/0xad0
 mpage_writepages+0x856/0x1c90
 do_writepages+0x32e/0x550
 __writeback_single_inode+0x133/0x11a0
 writeback_sb_inodes+0x992/0x1a20
 wb_writeback+0x456/0xb70
 wb_workfn+0x414/0xf50
 process_scheduled_works+0xb6e/0x18c0
 worker_thread+0xa53/0xfc0
 kthread+0x388/0x470
 ret_from_fork+0x51e/0xb90
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dbFindBits+0x19e/0x1a0
Code: ce fd 90 0f 0b e8 82 4f 6c fe 48 c7 c7 20 50 0b 8c 48 c7 c6 60 4d 0b 8c ba dc 0b 00 00 48 c7 c1 60 58 0b 8c e8 03 76 ce 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:ffffc90000b16bb0 EFLAGS: 00010246
RAX: 0000000000000030 RBX: 0000000000000000 RCX: 24d62f6cf0cccc00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 00000000ffffffff R08: ffffc90000b16927 R09: 1ffff92000162d24
R10: dffffc0000000000 R11: fffff52000162d25 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000020
FS:  0000000000000000(0000) GS:ffff8882a9462000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efd83fff000 CR3: 000000011e506000 CR4: 00000000000006f0
