BUG at fs/jfs/jfs_dmap.c:3036 assert(bitno < 32)
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kernel BUG at fs/jfs/jfs_dmap.c:3036!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 6505 Comm: syz.2.61 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: cc fd 90 0f 0b e8 32 48 6a fe 48 c7 c7 60 25 0b 8c 48 c7 c6 a0 22 0b 8c ba dc 0b 00 00 48 c7 c1 a0 2d 0b 8c e8 a3 62 cc 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:ffffc900055766e8 EFLAGS: 00010246
RAX: 0000000000000030 RBX: 0000000000000000 RCX: 3252dd5f95b03700
RDX: ffffc900097a1000 RSI: 0000000000003ed3 RDI: 0000000000003ed4
RBP: 00000000ffffffff R08: ffff8881210247d3 R09: 1ffff110242048fa
R10: dffffc0000000000 R11: ffffed10242048fb R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000020
FS:  00007ff0a8bd26c0(0000) GS:ffff88818de5d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000560fa51ac000 CR3: 000000016f66e000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 dbAllocDmapLev+0x16b/0x3c0
 dbAllocCtl+0x14a/0x9c0
 dbAllocAG+0xc2b/0xff0
 dbAlloc+0x5ab/0xba0
 xtSplitUp+0x4ca/0x1fc0
 xtInsert+0x452/0xf20
 extAlloc+0xad9/0x1020
 jfs_get_block+0x358/0xad0
 __blockdev_direct_IO+0x15d7/0x32f0
 jfs_direct_IO+0x119/0x220
 generic_file_direct_write+0x1db/0x3e0
 __generic_file_write_iter+0x11d/0x230
 generic_file_write_iter+0x14a/0x680
 iter_file_splice_write+0x9a1/0x10f0
 direct_splice_actor+0x101/0x160
 splice_direct_to_actor+0x53a/0xc70
 do_splice_direct+0x1ef/0x310
 do_sendfile+0x535/0x7d0
 __se_sys_sendfile64+0x144/0x1a0
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff0a7d9c799
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:00007ff0a8bd2028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007ff0a8015fa0 RCX: 00007ff0a7d9c799
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000004
RBP: 00007ff0a7e32c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff0a8016038 R14: 00007ff0a8015fa0 R15: 00007ffce51859a8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dbFindBits+0x19e/0x1a0
Code: cc fd 90 0f 0b e8 32 48 6a fe 48 c7 c7 60 25 0b 8c 48 c7 c6 a0 22 0b 8c ba dc 0b 00 00 48 c7 c1 a0 2d 0b 8c e8 a3 62 cc 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:ffffc900055766e8 EFLAGS: 00010246
RAX: 0000000000000030 RBX: 0000000000000000 RCX: 3252dd5f95b03700
RDX: ffffc900097a1000 RSI: 0000000000003ed3 RDI: 0000000000003ed4
RBP: 00000000ffffffff R08: ffff8881210247d3 R09: 1ffff110242048fa
R10: dffffc0000000000 R11: ffffed10242048fb R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000020
FS:  00007ff0a8bd26c0(0000) GS:ffff88818de5d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000012000 CR3: 000000016f66e000 CR4: 00000000000006f0
