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: 5342 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: ae fd 90 0f 0b e8 62 99 4f fe 48 c7 c7 60 75 6e 8c 48 c7 c6 a0 72 6e 8c ba 33 0c 00 00 48 c7 c1 a0 7d 6e 8c e8 63 56 ae 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:ffffc9000f9a74f0 EFLAGS: 00010246
RAX: 0000000000000030 RBX: 0000000000000000 RCX: 8ac23f87b7fb8e00
RDX: ffffc90020001000 RSI: 0000000000000725 RDI: 0000000000000726
RBP: 00000000ffffffff R08: ffffc9000f9a7267 R09: 1ffff92001f34e4c
R10: dffffc0000000000 R11: fffff52001f34e4d R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000020
FS:  00007fab0b8296c0(0000) GS:ffff88808ac41000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efcd01fd000 CR3: 0000000014034000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 dbAllocNear+0x23f/0x3c0 fs/jfs/jfs_dmap.c:1330
 dbAlloc+0x937/0xba0 fs/jfs/jfs_dmap.c:919
 ea_get+0x998/0x1300 fs/jfs/xattr.c:516
 __jfs_setxattr+0x5d5/0x1190 fs/jfs/xattr.c:727
 __jfs_xattr_set+0xda/0x170 fs/jfs/xattr.c:941
 __vfs_setxattr+0x442/0x480 fs/xattr.c:223
 __vfs_setxattr_noperm+0x12a/0x660 fs/xattr.c:257
 vfs_setxattr+0x163/0x360 fs/xattr.c:344
 do_setxattr fs/xattr.c:662 [inline]
 filename_setxattr+0x296/0x630 fs/xattr.c:690
 path_setxattrat+0x408/0x450 fs/xattr.c:734
 __do_sys_setxattr fs/xattr.c:768 [inline]
 __se_sys_setxattr fs/xattr.c:764 [inline]
 __x64_sys_setxattr+0xbc/0xe0 fs/xattr.c:764
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fab0a99f559
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:00007fab0b828fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007fab0ac26090 RCX: 00007fab0a99f559
RDX: 00002000000013c0 RSI: 0000200000000140 RDI: 0000200000000100
RBP: 00007fab0aa36b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000700 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fab0ac26128 R14: 00007fab0ac26090 R15: 00007ffff0ff9ad8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dbFindBits+0x19e/0x1a0 fs/jfs/jfs_dmap.c:3123
Code: ae fd 90 0f 0b e8 62 99 4f fe 48 c7 c7 60 75 6e 8c 48 c7 c6 a0 72 6e 8c ba 33 0c 00 00 48 c7 c1 a0 7d 6e 8c e8 63 56 ae 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:ffffc9000f9a74f0 EFLAGS: 00010246
RAX: 0000000000000030 RBX: 0000000000000000 RCX: 8ac23f87b7fb8e00
RDX: ffffc90020001000 RSI: 0000000000000725 RDI: 0000000000000726
RBP: 00000000ffffffff R08: ffffc9000f9a7267 R09: 1ffff92001f34e4c
R10: dffffc0000000000 R11: fffff52001f34e4d R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000020
FS:  00007fab0b8296c0(0000) GS:ffff88808ac41000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055de9d7dcec0 CR3: 0000000014034000 CR4: 0000000000352ef0